Study on shear resistance of lightweight steel and lightweight concrete precast wall
In order to meet the development requirements of prefabricated low-rise residential structures,a prefabricated lightweight steel and lightweight concrete structure was developed,which is mainly provided with shear capacity by lightweight steel and lightweight concrete precast wall.The effects of unilateral formwork and assembled wall on the shear bearing capacity,stiffness and energy dissipation capacity of lightweight steel and lightweight concrete precast wall were studied by quasi-static test of three lightweight steel and lightweight concrete precast walls.The results show that the bearing shear capacity of precast wall with unilateral formwork is not much different from that of precast wall without unilateral formwork,and the initial stiffness and stiffness degradation trend are basically the same.The shear bearing capacity of the prefabricated wall is basically the same as that of the unilateral prefabricated wall,and the initial stiffness and stiffness degradation trend are basically the same.Based on the failure characteristics of lightweight steel and lightweight concrete precast wall specimens,a grid equivalent diagonal strut model of prefabricated lightweight steel and lightweight concrete precast wall was proposed,and a formula for calculating the shear bearing capacity of lightweight steel and lightweight concrete prefabricated wall was established.
prefabricated lightweight steel and lightweight concrete structureprefabricated low-rise residential structuresprecast wallshear bearing capacitygrid equivalent diagonal strut model