基于蒙皮效应的冷弯薄壁型钢住宅结构动力响应分析  

DYNAMIC RESPONSE ANALYSIS OF COLD-FORMED THIN-WALLED STEEL HOUSING BASED ON DIAPHRAGM EFFECT

作　　者：王来[1,2] 陈尧[2] 李芮[2] 

机构地区：[1]山东省土木工程防灾减灾重点实验室,山东青岛266590 [2]山东科技大学土木建筑学院,山东青岛266590

出　　处：《工业建筑》2013年第11期117-120,147,共5页Industrial Construction

基　　金：国家自然科学基金面上项目(51178259);青岛市建设科技资助项目(jk2011-2);山东省‘泰山学者’建设工程专项经费资助项目

摘　　要：结合实际工程建立5组两层冷弯薄壁型钢住宅结构有限元模型,通过大型有限元软件ANSYS分别对5组结构进行模态求解,研究结构在开洞及有围护墙板时对其固有频率的影响。输入8度地震波进行结构动力响应分析,得到结构瞬态位移曲线,计算5组结构在8度多遇地震作用下各弹性层间位移角。研究表明:开洞使结构的整体抗侧刚度降低,在没有墙面板时,冷弯薄壁纯钢骨架在8度多遇地震作用下不能满足第一水准设防目标;墙面板能起到很好的蒙皮效应,可以有效提高结构整体刚度,控制结构位移;OSB板作为墙面板时具有很好的抗震性能,可为农村冷弯薄壁型钢房屋结构设计提供参考。Five groups of FE models for two-story of cold-formed thin-walled steel housing were built by combining 0 with the practical projects. The large finite element software ANSYS, it was used to analysed 5 groups of structure models, and also study the openning and retaining wall effects on the natural frequency of the whole structure. The 8 degrees seismic waves were input to analyse time history, and the transient displacement curve was got, elastic angular displacement between the layers under the action of 8 degrees common earthquake was calculated. Research showed that the openning reduced the whole lateral stiffness of the structure, the cold-formed thin-walled steel frame without wallboard could not meet the first level fortification goal under the effect of 8 degrees common earthquake. Wallboard had a good skin effect to the whole structure, which could effectively improve the integral rigidity and control displacement of structure. OSB board as wallboard had a good seismic behavior, which provided the reference for the design of rural cold-formed thin-walled steel building structure.

关 键 词：冷弯薄壁型钢住宅 动力响应 位移角 设防目标 蒙皮效应 抗震性能 

分 类 号：TU392.1[建筑科学—结构工程]