A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Testing and Design of Shear Capacity of Hollowcore Slabs with Structural Topping
Abstract Structural toppings on precast hollowcore slabs are cast on-site to enhance - for various reasons - the structural performance of the floor by means of a composite structure. In the evaluation of shear capacity of hollowcores with the standards EN1168 and EN1992, the depth of the composite cross section is accounted for. However, there is lack of experimental evidence on the influence of structural toppings on the shear capacity. Hence, experimental tests for both shear-tension and flexural-shear were conducted to validate the design formulas from EN1992 and EN1168. The hollowcore slabs with high pre-stressing level are 260 mm in depth and topped with a structural topping of 0 cm, 5 cm, and 10 cm. The analyses show that the recalculated shear-tension capacity ranges between 92% and 107% of the test result, while the test results had a coefficient of variation between 2.8%–5.9%. The recalculated flexural-shear capacity ranges between 91% and 105% of the test result, while the test results had a coefficient of variation between 1,1%–4.9%. It is concluded that the experimental tests on 260 mm hollow core slabs with structural toppings confirm a good and safe outcome of the design formulas of the shear capacities given in the standards EN1168 and EN1992.
Testing and Design of Shear Capacity of Hollowcore Slabs with Structural Topping
Abstract Structural toppings on precast hollowcore slabs are cast on-site to enhance - for various reasons - the structural performance of the floor by means of a composite structure. In the evaluation of shear capacity of hollowcores with the standards EN1168 and EN1992, the depth of the composite cross section is accounted for. However, there is lack of experimental evidence on the influence of structural toppings on the shear capacity. Hence, experimental tests for both shear-tension and flexural-shear were conducted to validate the design formulas from EN1992 and EN1168. The hollowcore slabs with high pre-stressing level are 260 mm in depth and topped with a structural topping of 0 cm, 5 cm, and 10 cm. The analyses show that the recalculated shear-tension capacity ranges between 92% and 107% of the test result, while the test results had a coefficient of variation between 2.8%–5.9%. The recalculated flexural-shear capacity ranges between 91% and 105% of the test result, while the test results had a coefficient of variation between 1,1%–4.9%. It is concluded that the experimental tests on 260 mm hollow core slabs with structural toppings confirm a good and safe outcome of the design formulas of the shear capacities given in the standards EN1168 and EN1992.
Testing and Design of Shear Capacity of Hollowcore Slabs with Structural Topping
Klein-Holte, Ronald (author) / Jansze, Wim (author)
2017-08-06
8 pages
Article/Chapter (Book)
Electronic Resource
English
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