Enviar pesquisa
Carregar
An Overview On Box Girder Bridges
•
2 gostaram
•
339 visualizações
IRJET Journal
Seguir
https://irjet.net/archives/V4/i1/IRJET-V4I188.pdf
Leia menos
Leia mais
Engenharia
Denunciar
Compartilhar
Denunciar
Compartilhar
1 de 3
Baixar agora
Baixar para ler offline
Recomendados
IRJET- Analysis and Design of Segmental Box Girder Bridge
IRJET- Analysis and Design of Segmental Box Girder Bridge
IRJET Journal
multistorey building design by sap and autocad
multistorey building design by sap and autocad
Razes Dhakal
Module 1 Behaviour of RC beams in Shear and Torsion
Module 1 Behaviour of RC beams in Shear and Torsion
VVIETCIVIL
Shear, bond bearing,camber & deflection in prestressed concrete
Shear, bond bearing,camber & deflection in prestressed concrete
MAHFUZUR RAHMAN
Balanced Cantilever Bridge
Balanced Cantilever Bridge
Jeelkumar Patel
Prestressed Concrete Structures
Prestressed Concrete Structures
ABHISHEK SHARMA
Study of Bridge Bearings
Study of Bridge Bearings
AyushHajare
Bridge construction (RC girder bridges)
Bridge construction (RC girder bridges)
Mohamed Yassin
Recomendados
IRJET- Analysis and Design of Segmental Box Girder Bridge
IRJET- Analysis and Design of Segmental Box Girder Bridge
IRJET Journal
multistorey building design by sap and autocad
multistorey building design by sap and autocad
Razes Dhakal
Module 1 Behaviour of RC beams in Shear and Torsion
Module 1 Behaviour of RC beams in Shear and Torsion
VVIETCIVIL
Shear, bond bearing,camber & deflection in prestressed concrete
Shear, bond bearing,camber & deflection in prestressed concrete
MAHFUZUR RAHMAN
Balanced Cantilever Bridge
Balanced Cantilever Bridge
Jeelkumar Patel
Prestressed Concrete Structures
Prestressed Concrete Structures
ABHISHEK SHARMA
Study of Bridge Bearings
Study of Bridge Bearings
AyushHajare
Bridge construction (RC girder bridges)
Bridge construction (RC girder bridges)
Mohamed Yassin
Prestressed concrete structures and its applications By Mukesh Singh Ghuraiya
Prestressed concrete structures and its applications By Mukesh Singh Ghuraiya
Mukesh Singh Ghuraiya
Limit state, working stress, ultimate load method - Detailed Concept
Limit state, working stress, ultimate load method - Detailed Concept
Civil Insider
Roller - Compacted Concrete (RCC)
Roller - Compacted Concrete (RCC)
SSudhaVelan
Ch7 Box Girder Bridges (Steel Bridges تصميم الكباري المعدنية & Prof. Dr. Metw...
Ch7 Box Girder Bridges (Steel Bridges تصميم الكباري المعدنية & Prof. Dr. Metw...
Hossam Shafiq II
Fundamentals of-psc-bridge
Fundamentals of-psc-bridge
University of Tikrit
Structural Design of Bridges
Structural Design of Bridges
AIT Solutions
PRESTRESSED CONCRETE
PRESTRESSED CONCRETE
ghildiyal8811
Yield line theory
Yield line theory
Vikas Mehta
Design of t beam bridge using wsm(2)
Design of t beam bridge using wsm(2)
Ankit Singh
Prestressed concrete continuous beam
Prestressed concrete continuous beam
PraveenKumar Shanmugam
BALANCED CANTILEVER BRIDGE
BALANCED CANTILEVER BRIDGE
srinivas cnu
Losses in prestressed concrete
Losses in prestressed concrete
Shubham Singh [NITK]
Reinforced slab bridge design(AASHTO allowable stress design method)
Reinforced slab bridge design(AASHTO allowable stress design method)
Shekh Muhsen Uddin Ahmed
Reinforced slab
Reinforced slab
Nik M Farid
Prestressed construction
Prestressed construction
Vishvendu pandey
Prestresses concrete
Prestresses concrete
jaiveer singh
Prestressed concrete
Prestressed concrete
Rajat Nainwal
Stiffness method of structural analysis
Stiffness method of structural analysis
Karan Patel
Shear Wall
Shear Wall
Rutvik Sabhaya
Design of compression members
Design of compression members
Sabna Thilakan
Bridge Bearings – A Review
Bridge Bearings – A Review
IRJET Journal
International Refereed Journal of Engineering and Science (IRJES)
International Refereed Journal of Engineering and Science (IRJES)
irjes
Mais conteúdo relacionado
Mais procurados
Prestressed concrete structures and its applications By Mukesh Singh Ghuraiya
Prestressed concrete structures and its applications By Mukesh Singh Ghuraiya
Mukesh Singh Ghuraiya
Limit state, working stress, ultimate load method - Detailed Concept
Limit state, working stress, ultimate load method - Detailed Concept
Civil Insider
Roller - Compacted Concrete (RCC)
Roller - Compacted Concrete (RCC)
SSudhaVelan
Ch7 Box Girder Bridges (Steel Bridges تصميم الكباري المعدنية & Prof. Dr. Metw...
Ch7 Box Girder Bridges (Steel Bridges تصميم الكباري المعدنية & Prof. Dr. Metw...
Hossam Shafiq II
Fundamentals of-psc-bridge
Fundamentals of-psc-bridge
University of Tikrit
Structural Design of Bridges
Structural Design of Bridges
AIT Solutions
PRESTRESSED CONCRETE
PRESTRESSED CONCRETE
ghildiyal8811
Yield line theory
Yield line theory
Vikas Mehta
Design of t beam bridge using wsm(2)
Design of t beam bridge using wsm(2)
Ankit Singh
Prestressed concrete continuous beam
Prestressed concrete continuous beam
PraveenKumar Shanmugam
BALANCED CANTILEVER BRIDGE
BALANCED CANTILEVER BRIDGE
srinivas cnu
Losses in prestressed concrete
Losses in prestressed concrete
Shubham Singh [NITK]
Reinforced slab bridge design(AASHTO allowable stress design method)
Reinforced slab bridge design(AASHTO allowable stress design method)
Shekh Muhsen Uddin Ahmed
Reinforced slab
Reinforced slab
Nik M Farid
Prestressed construction
Prestressed construction
Vishvendu pandey
Prestresses concrete
Prestresses concrete
jaiveer singh
Prestressed concrete
Prestressed concrete
Rajat Nainwal
Stiffness method of structural analysis
Stiffness method of structural analysis
Karan Patel
Shear Wall
Shear Wall
Rutvik Sabhaya
Design of compression members
Design of compression members
Sabna Thilakan
Mais procurados
(20)
Prestressed concrete structures and its applications By Mukesh Singh Ghuraiya
Prestressed concrete structures and its applications By Mukesh Singh Ghuraiya
Limit state, working stress, ultimate load method - Detailed Concept
Limit state, working stress, ultimate load method - Detailed Concept
Roller - Compacted Concrete (RCC)
Roller - Compacted Concrete (RCC)
Ch7 Box Girder Bridges (Steel Bridges تصميم الكباري المعدنية & Prof. Dr. Metw...
Ch7 Box Girder Bridges (Steel Bridges تصميم الكباري المعدنية & Prof. Dr. Metw...
Fundamentals of-psc-bridge
Fundamentals of-psc-bridge
Structural Design of Bridges
Structural Design of Bridges
PRESTRESSED CONCRETE
PRESTRESSED CONCRETE
Yield line theory
Yield line theory
Design of t beam bridge using wsm(2)
Design of t beam bridge using wsm(2)
Prestressed concrete continuous beam
Prestressed concrete continuous beam
BALANCED CANTILEVER BRIDGE
BALANCED CANTILEVER BRIDGE
Losses in prestressed concrete
Losses in prestressed concrete
Reinforced slab bridge design(AASHTO allowable stress design method)
Reinforced slab bridge design(AASHTO allowable stress design method)
Reinforced slab
Reinforced slab
Prestressed construction
Prestressed construction
Prestresses concrete
Prestresses concrete
Prestressed concrete
Prestressed concrete
Stiffness method of structural analysis
Stiffness method of structural analysis
Shear Wall
Shear Wall
Design of compression members
Design of compression members
Semelhante a An Overview On Box Girder Bridges
Bridge Bearings – A Review
Bridge Bearings – A Review
IRJET Journal
International Refereed Journal of Engineering and Science (IRJES)
International Refereed Journal of Engineering and Science (IRJES)
irjes
F244049
F244049
irjes
Dynamic analysis of steel tube structure with bracing systems
Dynamic analysis of steel tube structure with bracing systems
eSAT Journals
Ppt
Ppt
jagadish108
STRESS RIBBON BRIDGE
STRESS RIBBON BRIDGE
Shivananda Roy
Influence line diagram for model arch bridge
Influence line diagram for model arch bridge
kunalsahu9883
Ferrocement beams and columns with x shaped shear reinforcement and stirrups
Ferrocement beams and columns with x shaped shear reinforcement and stirrups
IAEME Publication
Radial gates psc ancho
Radial gates psc ancho
Bhanu Prasad
Prestressing Concept, Materilas and Prestressing System
Prestressing Concept, Materilas and Prestressing System
Latif Hyder Wadho
PSC Lecture PPT.pdf
PSC Lecture PPT.pdf
abhinavbharat9
IRJET- Behaviour of Castellated Beam with Coupled Stiffener
IRJET- Behaviour of Castellated Beam with Coupled Stiffener
IRJET Journal
IRJET- Comparing the Load Pattern on Box Concrete Gridder with Consideration ...
IRJET- Comparing the Load Pattern on Box Concrete Gridder with Consideration ...
IRJET Journal
Project report on beams
Project report on beams
UET peshawar
Arch System
Arch System
Archistudent Portal
Arches - Form Active Structure System
Arches - Form Active Structure System
Archistudent Portal
2 column
2 column
P Ramana
CTP.ppt
CTP.ppt
arun t
H05224754
H05224754
IOSR-JEN
Acm Unit 1
Acm Unit 1
Aaqib Iqbal
Semelhante a An Overview On Box Girder Bridges
(20)
Bridge Bearings – A Review
Bridge Bearings – A Review
International Refereed Journal of Engineering and Science (IRJES)
International Refereed Journal of Engineering and Science (IRJES)
F244049
F244049
Dynamic analysis of steel tube structure with bracing systems
Dynamic analysis of steel tube structure with bracing systems
Ppt
Ppt
STRESS RIBBON BRIDGE
STRESS RIBBON BRIDGE
Influence line diagram for model arch bridge
Influence line diagram for model arch bridge
Ferrocement beams and columns with x shaped shear reinforcement and stirrups
Ferrocement beams and columns with x shaped shear reinforcement and stirrups
Radial gates psc ancho
Radial gates psc ancho
Prestressing Concept, Materilas and Prestressing System
Prestressing Concept, Materilas and Prestressing System
PSC Lecture PPT.pdf
PSC Lecture PPT.pdf
IRJET- Behaviour of Castellated Beam with Coupled Stiffener
IRJET- Behaviour of Castellated Beam with Coupled Stiffener
IRJET- Comparing the Load Pattern on Box Concrete Gridder with Consideration ...
IRJET- Comparing the Load Pattern on Box Concrete Gridder with Consideration ...
Project report on beams
Project report on beams
Arch System
Arch System
Arches - Form Active Structure System
Arches - Form Active Structure System
2 column
2 column
CTP.ppt
CTP.ppt
H05224754
H05224754
Acm Unit 1
Acm Unit 1
Mais de IRJET Journal
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
IRJET Journal
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
IRJET Journal
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
IRJET Journal
Effect of Camber and Angles of Attack on Airfoil Characteristics
Effect of Camber and Angles of Attack on Airfoil Characteristics
IRJET Journal
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
IRJET Journal
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
IRJET Journal
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
IRJET Journal
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
IRJET Journal
A REVIEW ON MACHINE LEARNING IN ADAS
A REVIEW ON MACHINE LEARNING IN ADAS
IRJET Journal
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
IRJET Journal
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
IRJET Journal
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
IRJET Journal
Survey Paper on Cloud-Based Secured Healthcare System
Survey Paper on Cloud-Based Secured Healthcare System
IRJET Journal
Review on studies and research on widening of existing concrete bridges
Review on studies and research on widening of existing concrete bridges
IRJET Journal
React based fullstack edtech web application
React based fullstack edtech web application
IRJET Journal
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
IRJET Journal
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
IRJET Journal
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
IRJET Journal
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
IRJET Journal
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
IRJET Journal
Mais de IRJET Journal
(20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTURE
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...
Effect of Camber and Angles of Attack on Airfoil Characteristics
Effect of Camber and Angles of Attack on Airfoil Characteristics
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...
A REVIEW ON MACHINE LEARNING IN ADAS
A REVIEW ON MACHINE LEARNING IN ADAS
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
P.E.B. Framed Structure Design and Analysis Using STAAD Pro
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...
Survey Paper on Cloud-Based Secured Healthcare System
Survey Paper on Cloud-Based Secured Healthcare System
Review on studies and research on widening of existing concrete bridges
Review on studies and research on widening of existing concrete bridges
React based fullstack edtech web application
React based fullstack edtech web application
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
Multistoried and Multi Bay Steel Building Frame by using Seismic Design
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...
Último
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
ranjana rawat
(ANJALI) Dange Chowk Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANJALI) Dange Chowk Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
ranjana rawat
Processing & Properties of Floor and Wall Tiles.pptx
Processing & Properties of Floor and Wall Tiles.pptx
pranjaldaimarysona
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
ranjana rawat
IMPLICATIONS OF THE ABOVE HOLISTIC UNDERSTANDING OF HARMONY ON PROFESSIONAL E...
IMPLICATIONS OF THE ABOVE HOLISTIC UNDERSTANDING OF HARMONY ON PROFESSIONAL E...
RajaP95
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
ssuser5c9d4b1
the ladakh protest in leh ladakh 2024 sonam wangchuk.pptx
the ladakh protest in leh ladakh 2024 sonam wangchuk.pptx
humanexperienceaaa
Introduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptx
upamatechverse
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
RajkumarAkumalla
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
RajaP95
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
ranjana rawat
Roadmap to Membership of RICS - Pathways and Routes
Roadmap to Membership of RICS - Pathways and Routes
M Maged Hegazy, LLM, MBA, CCP, P3O
9953056974 Call Girls In South Ex, Escorts (Delhi) NCR.pdf
9953056974 Call Girls In South Ex, Escorts (Delhi) NCR.pdf
9953056974 Low Rate Call Girls In Saket, Delhi NCR
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
slot gacor bisa pakai pulsa
SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )
Tsuyoshi Horigome
MANUFACTURING PROCESS-II UNIT-5 NC MACHINE TOOLS
MANUFACTURING PROCESS-II UNIT-5 NC MACHINE TOOLS
SIVASHANKAR N
Microscopic Analysis of Ceramic Materials.pptx
Microscopic Analysis of Ceramic Materials.pptx
purnimasatapathy1234
Extrusion Processes and Their Limitations
Extrusion Processes and Their Limitations
120cr0395
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
ranjana rawat
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur High Profile
Último
(20)
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(SHREYA) Chakan Call Girls Just Call 7001035870 [ Cash on Delivery ] Pune Esc...
(ANJALI) Dange Chowk Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANJALI) Dange Chowk Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
Processing & Properties of Floor and Wall Tiles.pptx
Processing & Properties of Floor and Wall Tiles.pptx
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(ANVI) Koregaon Park Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
IMPLICATIONS OF THE ABOVE HOLISTIC UNDERSTANDING OF HARMONY ON PROFESSIONAL E...
IMPLICATIONS OF THE ABOVE HOLISTIC UNDERSTANDING OF HARMONY ON PROFESSIONAL E...
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
247267395-1-Symmetric-and-distributed-shared-memory-architectures-ppt (1).ppt
the ladakh protest in leh ladakh 2024 sonam wangchuk.pptx
the ladakh protest in leh ladakh 2024 sonam wangchuk.pptx
Introduction to Multiple Access Protocol.pptx
Introduction to Multiple Access Protocol.pptx
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARDNESS, FRACTURE TOUGHNESS AND STRENGTH OF CERAMICS
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
HARMONY IN THE NATURE AND EXISTENCE - Unit-IV
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
High Profile Call Girls Nagpur Isha Call 7001035870 Meet With Nagpur Escorts
Roadmap to Membership of RICS - Pathways and Routes
Roadmap to Membership of RICS - Pathways and Routes
9953056974 Call Girls In South Ex, Escorts (Delhi) NCR.pdf
9953056974 Call Girls In South Ex, Escorts (Delhi) NCR.pdf
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
DJARUM4D - SLOT GACOR ONLINE | SLOT DEMO ONLINE
SPICE PARK APR2024 ( 6,793 SPICE Models )
SPICE PARK APR2024 ( 6,793 SPICE Models )
MANUFACTURING PROCESS-II UNIT-5 NC MACHINE TOOLS
MANUFACTURING PROCESS-II UNIT-5 NC MACHINE TOOLS
Microscopic Analysis of Ceramic Materials.pptx
Microscopic Analysis of Ceramic Materials.pptx
Extrusion Processes and Their Limitations
Extrusion Processes and Their Limitations
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
(PRIYA) Rajgurunagar Call Girls Just Call 7001035870 [ Cash on Delivery ] Pun...
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
Call Girls in Nagpur Suman Call 7001035870 Meet With Nagpur Escorts
An Overview On Box Girder Bridges
1.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan-2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 522 AN OVERVIEW ON BOX GIRDER BRIDGES Savio John1, Reshma Prasad.2 1PG Student, Department of Civil Engineering, FISAT, Angamaly, India 2Assistant Professor, Department of Civil Engineering, FISAT, Angamaly, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - Bridge construction nowadays has achieved a worldwide level of importance. The efficient dispersal of congested traffic, economic considerations, and aesthetic desirability have increased the popularity of box girder bridges these days in modern highway systems, including urban interchanges. Box girders are prominently used in freeway and bridge systems due to its structural efficiency, serviceability, better stability, pleasing aesthetics and economy of construction. The box girders are efficient form of construction for bridges because it minimizes weight, while maximizing flexural stiffnes and capacity. Box girder have high torsional stiffness and strength, compared with an equivalent member of open cross section. Althoughsignificant research has been underway on advanced analysis for many years to better understand the behaviour of all types of box- girder bridges, the results of these various research works are scattered and unevaluated. Hence, a transparent understanding of more recent work on straight and curved box-girder bridges is highly desired. The main objective isgive a clear vision about non composite straight and curved box girder bridges. This study would enable bridge engineers to better understand the behaviour of box girders with different variations in parameters such as curvature and shape. Key Words: Box girder, Bridge, Stiffness 1 INTRODUCTION A box girder consists of two web plates which are joined by a common flange at top and bottom. Box girders can be classified in so many ways according to their method of construction, use, and shapes. There are three box girder configurations commonly used in practice. Box girders can be constructed as single cell, multiple cell ormulticell.Itmay be monolithically constructed with the deck (closed box girder), or the deck can be separately constructed afterwards (open box girder). The box girder normally comprises of either pre-stressedconcrete,structural steel,or reinforced concrete. According to shape, box girders may be classified as rectangular, trapezoidal and circular. A box girder is particularly well suited for use in curved bridge systems because of its high torsional rigidity. High torsional rigidity allows box girders to effectively resist the torsional deformations encountered incurvedthin-walledbeams. Box girder webs may be vertical or inclined, which reduces the width of the bottom flange. In bridges with light curvature, the curvature effects on bending, shear and torsional shear stresses can be ignored if they are within permissible range. Treating horizontally curved bridges as straight ones with certain limitations is one of the methods to simplify the analysis and design procedure. But, presently higher level investigations are possible due to availability of high capacity computational systems. It is required to examine these bridges using finite element analysis with different radius of curvatures configurations. Box girder structures use a combination of primary mild steel reinforcement and high strength post-tensioning steel tendons to resist tension and shear forces. Flexure reinforcement is provided in the top and bottom flanges of the box girder as necessary (bottom flange at midspan in areas of positive moment and top flange over supports in areas of negative moment). However, because of the design span lengths, mild steel reinforcement does not have sufficient strength to resist all of the tension forces. To reduce these tensile stresses to acceptable levels, prestressing of the concrete is introduced through post- tensioning. Galvanized metal and polyethylene ducts are placed in the forms at the desired location of the tendons. When the concrete has cured to an acceptablestrengthlevel, the tendons are installed in the ducts, tensioned, and then grouted. The top flanges or decks of precast or cast-in-place segmental boxes are often transversely post-tensioned. The multi-strand tendons are grouted after stressing. The tendons anchor in block-outs in the edges of top slab cantilever wings. These block-outs are then filled with concrete and covered with a trafficbarrier.Forprecastunits, the top flange tendons are generally tensioned and grouted in the casting yard. Wide bridges may have parallel twin boxes transversely post-tensioned. When this is the case, only about one-half of the transverse post-tensioning is stressed before shipment. The remainder of the post- tensioning is placed through ducts in adjacent box girders and the closure strip and stressed across the entire width of the bridge. Special “confinement” reinforcement is also required at the anchorage locations to prevent cracking due to the large transfer of force to the surrounding concrete. Stirrups in the web are provided to resist standard beam action shear. For curved girder applications, torsional shear reinforcement is sometimes required. This reinforcement is provided in the form of additional stirrups. The secondary (temperature and shrinkage) reinforcing steel is oriented longitudinally in the deck and webs and flanges in the box girder. The primary and secondary
2.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan-2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 523 reinforcing steel for the deck portion of the girder is same as that for a standard concrete deck. 2 DISTINCTIVE FEATURES A box girder has high torsional stiffness and strength, compared with an equivalent member of open cross section due to its distribution of longitudinal flexural stresses across the section remains more or less identical. The increase in flange width of box girder makes it possible to use large span/depth ratios. This is an advantage if constructiondepth is limited. Also it can lead to more slender structures which are mainly considered more aesthetical. The space enclosed within in the girder may be used for the passage of services such as gas pipes, cables, water mains etc. Maintenance of a box girder can be easier, because the interior space can be made directly accessible. Boxgirders are generallyaesthetic. The shape of the box girder can vary a lot. This makes them easier to design for aerodynamic shapes, which is an advantage especially for long span bridges. 3 GENERAL BEHAVIOUR OF CURVED BOX GIRDER The curved beam theory was developed by Saint-Venant (1843). Vlasov (1965) developed the thin-walled beam theory which marked the birth of all research efforts published to date on the analysis and design of straight and curved box-girder bridges. The recentstudiesonstraightand curved box girder bridges are dealt with analytical formulations to better understand the complex behaviour of box girders. 3.1 Bending Effects The bending load will cause the section to deflect rigidly (longitudinal bending) and deform (bending distortion).The box girders have large span to depth ratio and due to that transverse load causes significant bending stresses in the girder. The bending distortion occurs when transverse loads are applied to the open box. 3.2 Torsional Effects The torsional load causes the section to rotate rigidly (Mixed torsion) and deform the section (Torsional distortion). In curved boxgirderbridges,thetransverseloads acting on the girdercausestwistingaboutitslongitudinalaxis because of the bridgecurvature.Uniformtorsionoccursifthe rate of change of the angle of twist is constant along the girder and warping is constant and unrestrained. If there is a variation of torque or if warpingispreventedoralteredalong the girder, longitudinaltorsionalwarpingstressesdevelop.In general there are two types of torsion that act on cross- sections. Shear flow around the cross-sectiondevelopsSaint- Venant torsion, while the other one is warping due to bending deformation in the cross-section. Box girders are usually dominated by St. Venant torsion because the closed cross section has a high torsional stiffness. 4 LITERATURE REVIEW Variousliteraturereviewed onboxgirdersispresentedin this section. A number of works have been carried on optimization of box girder by varyingdifferentparameters.A review of literatures is summarized in brief by various scholars and researchers on box girder. There areseveralliteraturestudiesonstraightandcurved box girder bridges dealing with systematic formulations to have a clear understanding the behaviour of these complex structural systems. Some experimental studies are undertaken by a few authors to investigate the accuracy of existing elastic analysis methods such as finite element method, finite strip method and so on. W.Y.Li et al. (1998) employed three examples of box- girder bridges of various geometrical shapestoillustratethe accuracy and versatility of the finite strip method.Thiswork points out that compared to the finite element method, this method yields substantial savings in both time and effort, since only a few number of unknownsaregenerallyrequired in the analysis. Khaled et al. (2003) conducted a parametric study on multi cell box girder bridgesusingfinite elementmethod and the bridges are subjected to AASHTO truck loadinganddead load. In this study, a parametric study of multiple steel box girder bridge was conducted byanexperimentallycalibrated finite-element model and the shear distribution characteristics under dead load and AASHTO live loadings are determined. Based on the results obtained from this study it was found that the presenceofsolidenddiaphragms at the abutment supports coupled with a minimum of three bracing systems, equally spaced along the span with a maximum spacing of 7.5 m, and significantly enhances the transverse shear distribution. Another conclusion from this study is that stiffer cross bracings can significantly improve the transverse shear distribution and reduce lifting upward at the abutments. Ayman et al. (2004) conducted a detailed investigation of warping related stress of composite steel concrete box girder bridges of different radius of curvature and span length. This paper points out that there can be a large subset of bridges where the warping effect is small enough which may be ignored in structural calculations.Thisisparticularly useful to designers, because warping calculations are complicated and time-consuming. Gupta et al. (2010) conducted a parametric study on behaviour of box girder bridges under different depthofthe cross section.Three dimensional 4-noded shell elements have been employed for discretization of domain and to
3.
International Research Journal
of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan-2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 524 analyse the complex behaviour of different box-girders. The linear analysis has been carried out for the Dead Load (Self Weight) and Live Load of Indian Road Congress Class 70R loading. The paper presents study onvariousparameters for deflection, longitudinal and transverse bendingstressesand shear lag for the cross-sections considered. The Finite element computational model are validated by comparing few obtained results with the published paper. Analysis of box girder bridges with four noded shell elements and its effectiveness is mentioned. From the journal it was concluded that increase in depth of box girder rsults in reduced deflection. Similarly with increase in depth the bending stress distribution also decreases. Shi-Jun Zhou (2010) this paper considered the interaction of the bending and shear-lag deformation of a box girder and established a finite-elementmethod.Ashear- lag-induced stiffness matrix was defined and the stiffness matrices considering the effect of the shear lag was formulated. At each node of the beamelement,twoshear-lag degrees of freedom are used as boundary conditions for the box girders. The proposed formulations is then applied to analyse the effects of the shear lag on the deflection, the internal forces, and the shear-lag coefficients in the simply supported, cantilever and continuous box girders under concentrated and uniformly distributed loads. The results obtained using the proposed procedure was in good agreement with using different methods such as the analytical method, the finite-stringer method, thefiniteshell element method through variational principle, and the model tests. The proposed method is dependable and more effective for the analysis of the shear lag in the actual box- girder structures. Nikolaos Pnevmatikos & Vassilis Sentzas (2012) this paper focuses on the seismic response of the curved and post-tensioned concrete box girder bridges. It investigates influence of curvature and its response of a bridge subjected to earthquake. Parametric analysis of different radius of curvature is analyzed and the internal forces, torsion moment, axial and shear along the bridgearefoundout.Two types of connections are carried out for investigation, the monolithic connection and deck connection with bents and abutments with bearing. The response spectrum seismic analysis was performed. Diagrams relating the curvature with the torsion moment have been obtained from the results of analysis. These diagrams can be used by engineers for preliminary design of such kind of bridges. 5 SUMMARY AND CONCLUSION A concise review of different literaturespresentedshows that that there are a number of published work on study of box girder bridges with different variations in parameters such as shape, span, depth, material used, method of construction, cell configuration, curvature and so on. Due to rapid advancementofcomputersanddevelopmentofvarious analytical methods, complex model of curved beams have become easy to analyze and hence engineers have started to adopt the curved beams into use. Results based on curvature are scattered and unevaluated, hence there is a future scope of research on thisarea. Seismic and dynamic analysis canbe considered in future studies REFERENCES [1] Ayman M Okeli ,Sherif Ei Tawil “Warping Stress In Curved Box Girder Bridge : Case Study” Journal Of Bridge Engineering- Volume 3 (2004) [2] Gupta P K , K K Singh , A Mishra “ Parametric Study Of Behaviour Of Box Girder Bridge Using Finite Element Method” Asian Journal Of Civil Engineering (2010) [3] Kaoru Hasebe, Seizo Usuki, and Yasushi Horie “Shear Lag Analysis And Effective Width Of Curved Girder Bridges” Journal of Engineering Mechanics, ASCE ,Vol.11 ,pg 66-78, January, (1985) [4] Khaled Sennah , John B Kennady “ Design For Shear In Curved Box Girder Bridge” JournalOf Bridge Engineering (2003) [5] Li .W .Y , Tham L.G, Cheung Y.K “Curved Box Girder Bridge” Journal Of Structural Engineering (1988) [6] Nikolaos Pnevmatikos and Vassilis Sentzas, " Preliminary Estimation of Torsion of Curved Bridges Subjected to Earthquake Loading " Journal of Civil Engineering and Architecture, ISSN 1934-7359, USA, Volume 6, No. 11, pp. 1530–1535, Nov (2012) [7] Sachidanandan and D Ebenezer “Analysis of Folded Plate Box Girder Bridges Using Ansys”International Journal of Technology in Computer Science & Engineering,Vol 2, pp 165- 174, June (2015) [8] Sherif Ei Thawil , Ayman M Okeli “BehaviourAndDesign of Curved Composite Box GirderBridges”Departmentof civil and environmental engineering University of central florida (2002). [9] Shi-juzhou “Finite Beam Element ConsideringShearLag Effect In Box Girder” Journal Of Engineering Mechanics (2010)
Baixar agora