现浇与预制装配式混凝土框架节点抗震性能试验-《建筑科学与工程学报》

文章信息/Info

Title:: Experiment on Seismic Performance of Cast-in-situ andPrefabricated Concrete Frame Structure Joints

Author(s):: WU Cong-xiao， ZHOU Yun， LAI Wei-shan， ZHANG Yu-feng， DENG Xue-song; School of Civil Engineering， Guangzhou University

Keywords:: prefabricated concrete frame; castinsitu concrete frame; beamcolumn joint; experimental study; seismic performance

摘要:: 为研究预制装配式混凝土框架结构连接节点的抗震性能，探讨其与现浇混凝土框架结构节点之间的性能差异，设计并制作了2组预制装配式混凝土框架节点试件和1组现浇混凝土框架节点试件，通过试验研究试件的滞回特性、承载能力、位移延性、强度退化和耗能能力等抗震性能及其破坏特征。结果表明：通过合理的设计，预制装配式混凝土框架节点的滞回耗能性能与现浇混凝土框架节点相当，其承载力和初始刚度基本等同于现浇混凝土结构节点，但其承载力退化速度快于现浇混凝土框架节点，屈服后预制构件累积损伤程度较现浇构件严重；预制装配式混凝土框架节点在轴压比较大时，节点破坏较为严重，耗能更多。

Abstract:: In order to study the seismic performance of the prefabricated concrete frame structure joints, and to investigate the difference with the cast-in-situ concrete frame joint, two prefabricated frame joint specimens and one cast-in-situ frame joint specimen were designed and manufactured. The seismic performance such as hysteretic behavior, bearing capacity, displacement ductility, strength degradation, energy dissipation capacity, and failure pattern of specimens were studied through test. The results show that the energy dissipation performance of the prefabricated frame joints is similar with that of the cast-in-situ frame joint if design is reasonable, and its’ bearing capacity and initial stiffness are same as the cast-in-situ frame joint, but the degradation speed of bearing capacity is faster. Cumulative damage degree after yielding is worse serious than that of the cast-in-situ one. The damage and energy dissipation of the prefabricated concrete frame joints will be enhanced with the increasing of compression ratio.