In order to optimize the connection structure at the lateral joint of the composite slab connected without gap,a reinforced truss composite slab connected without gap with shear keys at the joint was designed.The finite element software ABAQUS was used to simulate the four-point bending of seven composite slabs,and the load-bearing capacity of ordinary composite slab connected without gap was compared with those with different forms of shear keys.The results show that the load-bearing capacity of the new composite slab connected without gap is better,which is 17%higher than that of the ordinary ones.When the ultimate load is reached,the stress of the inner steel bar is obviously lower than that of the ordinary assembled composite slab.Through comparative analysis on the flexural performance of the composite slabs with different slotted forms,the rational design of the groove splicing joint of the new shear keyway composite slab is determined,which provides theoretical basis for the application of the new type of composite slab in engineering practice.
关键词
混凝土与钢筋混凝土结构/装配式/密拼叠合板/凹槽拼缝连接/ABAQUS
Key words
concrete and reinforced concrete structures/prefabricated/composite slab connected without gap/groove splicing joint/ABAQUS
维普
万方数据