关键词: 装配式, 预应力, 混凝土, 节点, 拟静力

Abstract: Under the guidance of China＇s construction industrialization policy,how to improve the assembly performance of prefabricated component joints is a common concern of the construction industry.Based on the quasi-static seismic test of a three story single span prefabricated prestressed concrete frame,the crack and damage of each joint in the ultimate failure state of the test frame are understood,and the crack resistance degree of each joint is calculated and analyzed.According to the load(displacement)-shear angle hysteretic curve,the deformation characteristics and shear transfer mechanism of the joint core area are discussed,and the nonlinear simulation is carried out by using the ANSYS finite element software. The research results show that the failure of prefabricated prestressed concrete frame occurs at the beam end,while the core zone of the joint does not occur under the condition of bidirectional stress.The whole structure has good ductility,and the core area of joints has strong anti-crack and anti-deformation ability,which meets the seismic design requirements of“strong joints and weak members”.

Key words:  assembly, prestressed, concrete, node, quasi static