型钢混凝土异形柱框架地震损伤分析  

SEISMIC DAMAGE ANALYSIS ON STEEL REINFORCED CONCRETE FRAMES WITH SPECIAL-SHAPED COLUMNS

作　　者：刘祖强[1,2] 任甭优 薛建阳 周超锋[1] LIU Zu-qiang;REN Beng-you;XUE Jian-yang;ZHOU Chao-feng(School of Civil Engineering,Xi’an University of Architecture&Technology,Xi’an,Shaanxi 710055,China;Key Lab of Structural Engineering and Earthquake Resistance,Ministry of Education(XAUAT),Xi’an,Shaanxi 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,陕西西安710055

出　　处：《工程力学》2021年第1期143-153,共11页Engineering Mechanics

基　　金：国家自然科学基金项目(51308444);陕西省创新人才推进计划项目(2019TD-029,2019KJXX-018);陕西省留学人员科技活动择优资助项目(2019021)。

摘　　要：为实现对型钢混凝土异形柱框架的地震损伤分析,采用加权系数法建立了能够反映构件损伤、楼层损伤和整体框架损伤三者迁移演化的地震损伤模型,并对两榀型钢混凝土异形柱框架进行了地震损伤试验及有限元模拟,获得了梁的弯矩-转角滞回曲线和柱的水平荷载-位移滞回曲线,进而对试件的地震损伤指数进行了计算分析。结果表明,构件、楼层和整体框架的损伤指数变化规律与试件的破坏发展历程较为吻合,说明所建立的型钢混凝土异形柱框架地震损伤模型是合理的。基于试件的破坏状态及地震损伤分析结果,提出了型钢混凝土异形柱框架对应5个性能水平的损伤指数范围,为该类结构的震后损伤评估提供了依据。To realize the seismic damage analysis of steel reinforced concrete(SRC)frames with special-shaped columns,a damage model which can reflect the migration and evolution of the member damage,the floor damage and the whole frame damage was established by using the weighted coefficient method.Seismic damage tests and finite element simulation were carried out on two SRC frames with special-shaped columns.The moment-rotation hysteresis curves of the beams and the horizontal load-displacement hysteresis curves of the columns were obtained.The seismic damage index of specimens was calculated and analyzed.The results show that the change law of the damage index of members,floors and the whole frame were in good agreement with the failure development processes of the specimens,indicating that the seismic damage model of the SRC frame with special-shaped columns is reasonable.Based on the failure states of the specimens and the seismic damage analysis results,the range of the damage index of SRC frames with special-shaped columns corresponding to five performance levels was proposed.It provides the basis for the post-earthquake damage assessment of this type of structure.

关 键 词：型钢混凝土异形柱 框架结构 损伤模型 损伤分析 试验研究 有限元模拟 

分 类 号：TU398.2[建筑科学—结构工程]