混凝土异形柱框架角柱突然失效模拟试验研究  

EXPERIMENTAL RESEARCH ON SUDDEN FAILURE OF ONE CORNER COLUMN OF RC SPECIAL-SHAPED COLUMNS FRAME

作　　者：戎贤[1,2] 仉庆文[1,2] 赵玉婷[1,2] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《工业建筑》2015年第9期64-67,共4页Industrial Construction

基　　金：国家自然科学基金项目(51178304)

摘　　要：按照GB 50011—2010《建筑抗震设计规范》设计了一个1/3缩尺的两层3×2跨异形柱框架结构模型,并对其角柱进行了突然失效试验,以模拟异形柱在偶然荷载作用下突然失效这一动态过程,研究结构的动力反应、荷载传递路径及受力机制。研究结果表明:角柱失效后,与失效柱相连的跨度较小的框架梁其远端截面为最危险截面;由梁板形成的悬挑受力机制共同抵抗由失效柱在失效前所承担的荷载,结构整体仍处于弹性变形阶段。According to Code for Seismic Design of Building （GB 50011--2010） , it was designed a 1/3 scale, two- layer and 3 ×2 large-span special-shaped column frame model. A sudden collapse experiment for its corner column was carried out to simulate the sudden failure dynamic process of special-shaped columns under accidental load. Through studying the dynamic response, load transfer path and stress mechanism of the structure, the results could be got that after the failure of the corner column, for the shorter frame beam connected with the failed column,its far-end section was the most dangerous section. The overhang stress mechanism formed by the beam and floorslab resisted the load carried by the failed column before it failed, hence the whole structure was still in the elastic deformation range.

关 键 词：异形柱框架 连续倒塌 构件拆除 关键构件 受力机制 

分 类 号：TU398.9[建筑科学—结构工程]