矩形-八边形组合螺旋箍筋柱抗震性能分析  

Analysis of the seismic performance of columns with continuous rectangular and octagon hoops

作　　者：陈盛扬 徐浩[2] 周建龙[2] 薛伟辰[1] CHEN Shengyang;XU Hao;ZHOU Jianlong;XUE Weichen(College of Civil Engineering,Tongji University,Shanghai 200092,China;East China Architectural Design and Research Institute,Shanghai 200011,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]华东建筑设计研究院有限公司,上海200011

出　　处：《哈尔滨工程大学学报》2023年第6期1043-1050,共8页Journal of Harbin Engineering University

基　　金：国家重点研发计划(2018YFC0705800)。

摘　　要：为研究矩形-八边形组合螺旋箍筋混凝土柱的抗震性能,本文对其(RCC1、RCC4)以及手工绑扎矩形箍筋柱(RCC2、RCC5)、井字形箍筋(RCC3、RCC6)柱开展了0.2、0.8轴压比下足尺低周反复荷载试验研究。结果表明:3种不同箍筋形式的混凝土柱在0.2和0.8轴压比下分别以大偏心压弯破坏、小偏心压弯破坏为标志;在0.2和0.8轴压比下的滞回曲线均较为饱满且在相同轴压比下的耗能基本一致。0.2轴压比下,RCC1的承载力分别比RCC2、RCC3的承载力高2.5%和3.7%,RCC1的位移延性分别比RCC2、RCC3的位移延性高4.6%和2.3%;0.8轴压比下,RCC4的承载力分别比RCC5、RCC6的承载力高4.6%和6.65%,RCC4的位移延性分别比RCC5、RCC6的位移延性高9.5%和4.2%。Full-scale low-cycle reversed loading tests were conducted on RCC1 and RCC4,manually tied rectangular reinforced columns(RCC2,RCC5),and cross-shaped reinforced columns(RCC3,RCC6)under 0.2 and 0.8 axial compression ratios to study the seismic performance of continuous rectangular and octagon hoop concrete columns.The results showed that the concrete columns with three different types of reinforcement loops were characterized by large eccentric compression bending failure and small eccentric compression bending failure under 0.2 and 0.8 axial compression ratios,respectively.The hysteresis curves at 0.2 and 0.8 axial compression ratios were relatively full,and the energy dissipation was basically the same under the same axial compression ratio.Under 0.2 axial compression ratio,the bearing capacity of RCC1 was 2.5%and 3.7%higher than those of RCC2 and RCC3,respectively,and the displacement ductility of RCC1 was 4.6%and 2.3%higher than those of RCC2 and RCC3,respectively.Under 0.8 axial compression ratio,the bearing capacity of RCC4 was 4.6%and 6.65%higher than those of RCC5 and RCC6,respectively,and the displacement ductility of RCC4 was 9.5%and 4.2%higher than those of RCC5 and RCC6,respectively.

关 键 词：矩形-八边形组合螺旋箍筋 自动成型 低周反复荷载试验 抗震性能 滞回曲线 承载力 延性 轴压比 

分 类 号：TU375.2[建筑科学—结构工程]