钢框架-预制混凝土抗侧力墙恢复力模型研究

发布时间：2018-06-24 23:59

本文选题：钢框架 + 抗侧力墙　；参考：《工业建筑》2016年12期

【摘要】：为研究钢框架-预制混凝土抗侧力墙结构体系("SPW体系")的受力性能,对两榀足尺单跨单层钢框架-预制混凝土抗侧力墙试件进行水平低周反复加载试验,分析钢框架-预制混凝土抗侧力墙试件延性、破坏机理及滞回性能。试验表明:加载前期,抗侧力墙体作为结构第一道防线承担主要水平荷载,随着墙体逐步退出工作,钢框架承担主要水平荷载成为结构第二道防线。根据试件荷载-位移滞回曲线,分析得到钢框架-预制混凝土抗侧力墙试件三折线型骨架曲线计算式,通过分析试验数据,建立了"SPW体系"初始抗侧刚度计算式,提出加载刚度及卸载刚度退化规律,建立钢框架-预制混凝土抗侧力墙试件恢复力模型,可为该结构体系弹塑性分析提供依据。
[Abstract]:In order to study the mechanical behavior of steel frame-precast concrete lateral force wall system (SPW system), two full-span single-story steel frame-precast concrete lateral force wall specimens were subjected to horizontal low-cycle repeated loading tests. The ductility, failure mechanism and hysteretic behavior of steel frame-precast concrete wall specimens are analyzed. The test results show that in the early stage of loading, the anti-lateral force wall acts as the main horizontal load of the first line of defense of the structure, and with the gradual withdrawal of the wall, the steel frame takes on the main horizontal load as the second line of defense line of the structure. According to the load-displacement hysteretic curve of the specimen, the calculation formula of three-fold linear skeleton curve of steel frame-precast concrete lateral force wall specimen is obtained. By analyzing the test data, the calculation formula of initial lateral stiffness of "SPW system" is established. The degradation law of loading stiffness and unloading stiffness is put forward, and the restoring force model of steel frame-precast concrete lateral force wall specimen is established, which can provide the basis for the elastoplastic analysis of the structure system.
【作者单位】：长安大学建筑工程学院;长安大学基建处;
【基金】：国家自然科学基金项目(51208058) 陕西省自然科学基金项目(2014JM7294) 陕西省协同创新计划项目(2015XT-38) 中央高校基本科研业务费-高级技术项目(2013G2281016)
【分类号】：TU398.9

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