不同破坏模式的新型框架节点抗震性能比较  

Comparison of Seismic Performance of New UHTCC Frame Joint With Different Failure Modes

作　　者：苏骏 李芬 SU Jun;LI Fen(School of Civil Engin.,Architecture and Environment,Hubei Univ.of Tech.,Wuhan 430068,China)

机构地区：[1]湖北工业大学土木建筑与环境学院,湖北武汉430068

出　　处：《湖北工业大学学报》2020年第1期52-54,共3页Journal of Hubei University of Technology

基　　金：国家自然科学基金(51579195)。

摘　　要：为了解不同破坏模式下UHTCC新型框架节点的抗震性能差异,对UHTCC新型框架节点进行了低周反复荷载试验,比较分析了不同模式下UHTCC新型框架节点的破坏过程、承载力、骨架曲线和位移延性系数的差异。结果表明,UHTCC框架节点裂缝明显细密且均匀,梁端弯曲破坏时的UHTCC框架节点试件具有更高的抗震延性和耗能性能。实际工程中UHTCC优异的抗剪性能可部分取代梁柱节点核心区水平箍筋的抗剪作用。In order to understand the seismic performance difference of UHTCC new frame nodes under different failure modes.The low-cycle repeated load tests were carried out on the new UHTCC frame joints.The differences in the failure process,bearing capacity,skeleton curve and displacement ductility coefficient of the new UHTCC frame joints under different modes were compared.The results show that the UHTCC frame joint cracks are fine and uniform and the UHTCC frame joint specimens with the beam flexural failure have higher seismic ductility and energy dissipation performance.The excellent shear resistance of UHTCC in actual engineering can partially replace the shearing effect of horizontal stirrups in the core zone of beam-column joints.

关 键 词：破坏模式 UHTCC 框架节点 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程]