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（中國建筑標(biāo)準(zhǔn)設(shè)計研究院， 北京 100048）
［摘要］基于有限元方法對一種新型低層冷彎薄壁鋼結(jié)構(gòu)住宅體系進(jìn)行了分析。分析包括三個層面：鋼龍骨、組合墻體和整體模型。在鋼龍骨模型中，分析不同的綴板間距對鋼龍骨的豎向承載力以及側(cè)向剛度的影響；在墻體模型中，分析了墻體面層材料和龍骨之間的相互作用（蒙皮效應(yīng)）以及可能的破壞模式，并從中提取組合墻體的側(cè)向剛度以及設(shè)計方法；通過組合墻體模型的結(jié)果建立一典型住宅整體模型，分析整體結(jié)構(gòu)在地震作用下的反應(yīng)以及相應(yīng)的安全余度。結(jié)果表明，低層冷彎薄壁型鋼結(jié)構(gòu)具有較好的整體性能，能夠滿足設(shè)防烈度8度（0.20g）的承載力和變形要求，且安全儲備充足。
［關(guān)鍵詞］冷彎薄壁型鋼; 有限元分析; 組合墻體; 蒙皮效應(yīng); 整體性能分析
中圖分類號： TU351 文獻(xiàn)標(biāo)識碼： A文章編號： 1002-848X(2016)S2-0370-06
Integral behavior analysis of a new cold-formed thin-walled steel framing
system of low-rise residential buildings
Lu Lei， Lei Yuande， Yu Yinquan
(China Institute of Building Standard Design and Research, Beijing 100048, China)
Abstract: Based on the finite element analysis method, a new type of cold-formed thin-walled steel frame system of low-rise residential building was modeled and studied. The study conclude three levels: steel joist, composite wall and the structure system. In the steel joist model, the influence of different batten plate spacing on vertical bearing capacity and stiffness of the steel joist. In the composite wall model, the study focused on the combination of the wall panel and steel joists (skin effect) and the potential failure mode, then the stiffness of the composite wall and design method was obtained. Based on the composite wall level, a whole structure system model was established. The structure response under seismic action was studied, and also the structure safety redundancy. The result shows that: the new cold-formed thin-walled steel framing system of low-rise residential buildings has a good integral performance, while it can meet the requirement of bearing capacity and deformation and has enough safety reserve.
Keywords: cold-formed thin-walled steel; finite element analysis method; composite wall; skin effect; integral performance analysis
作者簡介： 盧雷，碩士，高級工程師，Email:leiyd07@163.com。
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