- 摘 要
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（1 同濟大學土木工程防災國家重點實驗室，上海 200092; 2 同濟大學建筑工程系，上海 200092）
［摘要］提出了一種可應用于輕型支撐鋼框架結構的分段正交扁鋼支撐，其具有占用空間小、用鋼量少及失穩(wěn)方向可控制在墻體平面內從而不損壞墻體等優(yōu)點。采用了靜力法和有限元軟件對其進行穩(wěn)定分析。通過靜力法對簡化支撐模型進行分析，確定了扁鋼的最優(yōu)分段數。利用有限元軟件引入初始缺陷，并考慮靜力法分析所忽略的若干因素，驗證該支撐在實際工程應用中的可行性。同時給出了正交扁鋼相對長度的取值范圍。
［關鍵詞］鋼結構; 支撐; 失穩(wěn)方向; 分析模型; 數值計算; 控制參數
中圖分類號：TU391 文獻標識碼：A 文章編號：1002-848X(2014)07-0075-05
Stability analysis of the segmented orthogonal flat steel brace
Chen Yiyi1,2, Xu Ting2
(1 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; partment of Building Engineering, Tongji University, Shanghai 200092， China)
Abstract: The segmented orthogonal flat steel brace was proposed for the light braced frame structures, which has such merits as less space occupation, less steel consumption and instability direction controlled within the wall plane so as not to damage the wall. Both the static method and finite element software were used to conduct the stability analysis for the brace. By using the static method to analyze the simplified brace models, the optimal segments of the flat steel were determined. By using the finite element software to introduce the initial defects and take several factors neglected in the static method analysis into consideration, the feasibility of the brace applying in practical engineering was checked. Meanwhile, the value range of the flat steel length ratio in the two orthogonal directions was given.
Keywords: steel structure; brace; instability direction; mechanical model; numerical computation; predominant parameter
*國家自然科學基金項目（51038008）。
作者簡介：陳以一，博士，教授，Email: yiyichen@#edu.cn。
參考文獻
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