In order to solve the problem of severe damage to prefabricated concrete wall panels under strong seismic action and difficulty in quickly restoring structural function,a flexible connected prefabricated concrete wall panel(FCWP)with buckling-restrained energy dissipater was proposed.Firstly,the concept and working principle of the new type of wall panel were introduced.Secondly,Abaqus finite element software was used to conduct finite element simulation on the energy dissipater and prefabricated concrete wall panel.Finally,the stress mechanism and damage mode of FCWP and traditional rigid connected prefabricated wall panels(RCWP)under low cycle reciprocating loads were compared and analyzed.The results show that during the initial loading of RCWP,horizontal cracks appeared at the bottom of the prefabricated wall panel,and diagonal cracks gradually extended to the upper left of the wall panel.As the loading amplitude increases,the diagonal cracks penetrated through the mid span of the wall panel,causing structural failure.The buckling-restrained energy dissipater in FCWP exhibits excellent energy dissipation capacity,and cracks only appear in the connection parts between the bottom and top of the prefabricated wall panel and the damper,with relatively mild damage.The proposed new flexible connected prefabricated wall panels effectively improve the seismic performance and post-earthquake recovery ability of prefabricated wall panel structures by introducing buckling-restrained energy dissipater into the structure.This new connection provides a new idea and method for the seismic design of prefabricated wall panel structure,which has important engineering application value.
关键词
结构设计/预制混凝土墙板/柔性连接/可更换/防屈曲约束耗能杆/抗震性能
Key words
structural design/prefabricated concrete wall panels/flexible connection/replaceable/buckling-restrained energy dissipater/seismic performance
维普
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