Abstract：To study the impact of irregular construction on the boundary conditions of the hollow core slab, two types of loading conditions (including point loads and line loads) and three asymmetric boundary conditions, namely (a) simple support of two opposite sides, (b) simple support of three sides and (c) simple support of two opposite sides with one lateral side constrained, were designed, so that the field tests were carried out on concrete hollow slabs. Furthermore, three-dimensional nonlinear simulations were performed using the Abaqus software to observe and analyze the whole development process of cracks in detail. The test results show that under the boundary condition (a), the specimen fails in the mode of mid-span bending and cracking; under the boundary conditions of (b) and (c), the failure mode shall be affected by the asymmetrical boundary, and the failure mode of the hollow slab beam appears mainly to be the spatial failure under the combined actions of bending, shear and torsion; under the boundary conditions (b) and (c), the mid-span failure bending moment may increase by approximately 13% and 12% respectively, and the ductility loss shall be nearly 96% when the ductility is measured by the mid-span deflection at failure.
马海英 赖明辉 夏烨 石雪飞. 非对称边界下空心板承载力试验与仿真研究[J]. 土木工程学报, 2022, 55(5): 67-72.
Ma Haiying Lai Minghui Xia Ye Shi Xuefei. Experimental and simulation study on bearing capacity of concrete hollow slabs under asymmetric boundary conditions. 土木工程学报, 2022, 55(5): 67-72.
