新型石膏混凝土复合外墙板的恢复力模型研究  

Restoring Force Model of New Type Gypsum-Concrete Composite Exterior Wallboard

作　　者：姜南[1,2] 梁壮 Jiang Nan;Liang Zhuang(School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coast Civil Structure Safety of Ministry of Education(Tianjin Univeristy),Tianjin 300072,China)

机构地区：[1]天津大学建筑工程学院,天津300072 [2]滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072

出　　处：《天津大学学报（自然科学与工程技术版）》2018年第9期977-987,共11页Journal of Tianjin University：Science and Technology

基　　金：国家自然科学基金资助项目(51478312)~~

摘　　要：以一组新型石膏混凝土复合外墙板在低周反复水平荷载作用下的抗震性能试验为基础,推导了在整个受力过程中不同极限状态下该墙板的顶点位移公式,构建了新型石膏混凝土复合外墙板的骨架曲线模型.通过选择合理的参数组合形式,提出了一种双参数地震损伤模型.利用该双参数地震损伤模型,考虑捏缩效应以及在卸载顶点处的侧向荷载骤降现象,提出了相应的滞回规则.最终得到基于损伤的恢复力模型,并进行了数值分析.研究表明,本文提出的恢复力模型与试验曲线较为吻合,为结构非线性分析提供了依据.Based on the seismic experiments on a group of new-type gypsum-concrete composite exterior wallboard under low cyclic horizontal loading,the analytical formulae of top displacement at different stages of the entire loading process were derived,and the skeleton curve model of the new-type gypsum-concrete composite exterior wallboard was established.A new two-parameter seismic damage model was proposed by a reasonable combination of parameters.Using the proposed two-parameter seismic damage model and considering the pinch effect and lateral load drop at the unloading point,the corresponding hysteresis rule was proposed.Finally,the restoring force model based on damage was obtained and numerically analyzed.The results show that the restoring force model and experimental curve are in good agreement,providing the theoretical basis for nonlinear analysis.

关 键 词：新型石膏混凝土复合外墙板 地震损伤模型 恢复力模型 

分 类 号：TU375.2[建筑科学—结构工程]