基于静力试验的柱端铰型受控摇摆钢筋混凝土框架地震响应数值分析  

NUMERICAL ANALYSIS OF SEISMIC RESPONSE OF CONTROLLED ROCKING REINFORCED CONCRETE FRAME WITH COLUMN-ENDHINGE JOINTS BASED ON STATIC TEST

作　　者：杨睿[1] 鲁亮[1] 谢广然 YANG Rui;LU Liang;XIE Guang-ran(Department of Disaster Mitigation for Structures,Tongji University,Shanghai 200092,China;Guangzhou Airport Construction Investment Group Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]同济大学结构防灾减灾工程系,上海200092 [2]广州机场建设投资集团有限公司,广州510000

出　　处：《工程力学》2024年第S01期258-265,共8页Engineering Mechanics

基　　金：国家自然科学基金项目(51678453)。

摘　　要：柱端铰型受控摇摆钢筋混凝土框架(CR-RCFC)是一种新型的可恢复功能结构,通过摇摆节点的构造来“弱化”结构整体抗侧刚度,从而达到减小地震响应的目的。CR-RCFC结构在振动台试验中呈现了在中震和大震作用下“主体构件免损伤,耗能构件易更换”的韧性抗震效果。振动台试验后进行低周反复静载试验得到拆除阻尼器后的CR-RCFC结构柱铰节点弯矩-转角滞回曲线和转动刚度等抗震性能参数。利用静力试验得到的结构抗震性能参数进行结构地震响应数值模拟,将数值模拟结果与振动台试验结果进行对比分析。对比分析结果表明:通过静力试验数据可以精确得到CR-RCFC结构节点抗震性能参数,根据该抗震性能参数进行的数值模拟结果与振动台试验结果吻合较好。The controlled rocking reinforced concrete frame with column-end-hinge joints(CR-RCFC)is a new type of function-recoverable structure.Through the construction of rocking joints,the overall lateral stiffness of the structure is weakened to achieve the effect of reducing seismic response.In the shaking table test,the CR-RCFC structure exhibited seismic resilience that"the main components are damage-free and the energy-dissipating devices are easy to replace"under the action of moderate and large earthquakes.After the shaking table test,a low-frequency cyclic loading test was carried out to obtain the mechanic parameters of the column-end-hinge joint of CR-RCFC structure without dampers.The moment-rotation hysteresis curve,the rotational stiffness and the mechanic parameters were obtained by the test and were used for numerical simulation of structural seismic responses.The numerical simulation results and the shaking table test results are compared and analyzed.The comparative results show that the mechanic parameters of CR-RCFC structural joint can be accurately obtained through the static test,and the numerical simulation results based on these parameters are in good agreement with the shaking table test results.

关 键 词：柱端铰 受控摇摆钢筋混凝土框架 低周反复试验 节点力学模型 数值模拟 

分 类 号：TU375.4[建筑科学—结构工程] TU311.3