Shear capacity of slabs and slab strips loaded close to the support

Shear Capacity of Slabs and Slab Strips Loaded Close to the Support Eva Lantsoght

Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],S9T6 at failure

Introduction Project description (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Highways in the Netherlands

Introduction Project description (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Concrete bridges

Experiments Test setup Size: 5m x 2,5m x 0,3m Continuous support, Line supports Load: vary a/d and position along width

Shear span to depth ratio Introduction (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],Valley of shear failure (Kani 1964)

Shear span to depth ratio Introduction (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],EN 1992-1-1:2005 Figure 6.4

Shear span to depth ratio Introduction (3) ,[object Object],[object Object],[object Object],[object Object]

Shear span to depth ratio Introduction (4) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Shear span to depth ratio Results ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],26% 2.5 S3/S4 – S5/S6 23% 2.0 BX2 – BX3 41% 1.5 BL2 – BL3 64% 1.0 BM2 – BM3 98% 0.5 BS2 – BS3 Average increase b (m) Specimens

Size of loading plate Introduction (1) AASHTO loading truck Tire contact area: 510mm x 250mm EN 1991-2 load model 1 400mm x 400mm

Size of loading plate Introduction (2) 45 ° load spreading 45 ° load spreading – French practice Influence size of loading plate on shear capacity?

Size of loading plate Previous research ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Size of loading plate Test results (1) ,[object Object],[object Object],[object Object],41.5% 2.5 S1 – S2 25.2% 2.0 BX1 – BX3 0.7% 1.5 BL1 – BL3 0.5% 1.0 BM1 – BM3 10.1% 0.5 BS1 – BS3 Average increase b (m) Specimens

Overall width and Effective width Previous research ,[object Object],[object Object],[object Object],[object Object],[object Object]

Overall width and Effective width Test results (1)

Overall width and Effective width Test results (2) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Overall width and Effective width Test results (3) Comparison cracking pattern BS2T1 and S9T1

Comparison to Code Methods Codes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Comparison to Code Methods Results (1)

Comparison to Code Methods Results (2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],S4T2 Dominant shear crack

Comparison to Code Methods Results (3) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Comparison to Code Methods Recommendation ,[object Object],[object Object],[object Object],[object Object],[object Object]

Conclusions (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Conclusions (2) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Contact: Eva Lantsoght [email_address] +31(0)152787449

Shear capacity of slabs and slab strips loaded close to the support

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Shear capacity of slabs and slab strips loaded close to the support