含斜柱RC框架结构抗震能力计算分析  

Calculation and Analysis of Seismic Capacity of RC Frame Structure with Inclined Columns

作　　者：贾磊 韦俊 卢俊龙[2] 张瑞豪 吴义 JIA Lei;WEI Jun;LU Junlong;ZHANG Ruihao;WU Yi(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou Jiangsu 215009China;School of Civil Engineering and Architecture,Xi'an University of Technology,Xi'an Shaanxi 710048 China;Logistics Management Office,Soochow University,Suzhou Jiangsu 215000China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215009 [2]西安理工大学土木建筑工程学院,陕西西安710048 [3]苏州大学后勤管理处,江苏苏州215000

出　　处：《江苏建筑》2024年第3期32-38,共7页Jiangsu Construction

摘　　要：为研究含斜柱RC框架结构的抗震能力,采用ABAQUS有限元软件,建立一榀含斜柱RC框架的数值模型,在框架顶部施加单调递增的水平荷载进行Pushover分析,得到该框架的荷载-位移曲线、刚度退化曲线、结构主拉应力以及等效塑性应变的计算结果,分析了加载过程中框架的破坏模式、屈服机制、承载力及抗侧刚度变化。结果表明:单调水平荷载作用下框架中两个柱脚区首先发生破坏,推覆相对侧脚部区为剪切破坏,推覆方向一侧脚部区为受压破坏。加载初期弹性阶段框架刚度退化较快,到达屈服阶段之后刚度退化缓慢,易损区位于左立柱脚部区,破坏时刚度退化为初始刚度的1/14.3,框架的抗推覆能力较强,具有较好的延性。研究结果能够为含斜柱框架的抗震设计提供依据。In order to study the seismic capacity of RC frame structure with inclined columns,ABAQUS finite element software was used to establish a numerical model of a RC frame with inclined columns.The monotonically increasing horizontal load was applied on the top of the frame to carry out Pushover analysis.The load-displacement curve,stiffness degradation curve,main tensile stress and equivalent plastic strain of the frame were obtained.The failure mode,yield mechanism,bearing capacity and lateral stiffness change of the frame during loading were analyzed.The results show that the foot regions of two columns in the frame are destroyed firstly under monotonic horizontal load,and shear failure occurs in the foot region of push-pull relative side,and compression failure occurs in the foot region of push-pull direction.In the early elastic stage,the stiffness degradation of the frame is fast,and the stiffness degradation is slow after reaching the yield stage.The vulnerable area is located at the foot of the left column,and the stiffness degradation is 1/14.3 of the initial stiffness.The frame has strong anti-pushing ability and good ductility.The research results can provide a basis for seismic design of frame with inclined columns.

关 键 词：含斜柱框架 钢筋混凝土 变形能力 单调加载 推覆分析 

分 类 号：TU352.11[建筑科学—结构工程]