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双斜撑冷弯薄壁型钢框架结构计算模型及分析

发表时间:2013-01-31  浏览量:1509  下载量:646
全部作者: 李磊磊,陈世鸣
作者单位: 福建世茂新里程投资发展有限公司工程管理部;同济大学土木工程学院
摘 要: 基于某双斜撑冷弯薄壁型钢框架结构体系,分析了结构中双斜撑节点的特性,提出了节点简化计算模型。采用有限元分析方法和SAP2000软件,针对梁、柱与斜撑构件不同的连接情况,建立了4种有限元分析模型。通过对结构整体模型进行分析,获得了结构在风荷载及地震作用下的位移和内力特性,比较了4种不同模型的差别。计算结果表明:双斜撑明显增加了结构的抗侧移刚度,对结构的抗侧移能力及抗震性能提高较大,单纯改变梁、柱和斜撑构件之间的刚接、铰接等连接情况对结构侧向刚度贡献和整体性能影响不大。
关 键 词: 工程结构;双斜撑;冷弯薄壁型钢;框架结构;有限元分析;构件连接
Title: Calculation model and analysis of thin-walled cold-formed steel framed structure with double bracing
Author: LI Leilei, CHEN Shiming
Organization: Project Management Department, Fujian Shimao Xinlicheng Development Co., Ltd.; School of Civil Engineering, TongjiUniversity
Abstract: Based on one thin-walled cold-formed steel structure with double slant bracing, the characteristics of node of the double slant bracing was analyzed, and simplified node calculation model was proposed. Regarding different ways of connection of beams, columns and slant bracings, four finite element analysis models were constructed using finite element analysis method and SAP2000 software. Through analyzing the whole structure of the model, the displacement and internal force of the structure under the load of wind and earthquake was obtained, and comparisons were made among the four models. The results showed that double slant bracing significantly increased the anti-lateral displacement stiffness, improved the anti-lateral displacement and earthquake resistant ability of the structure. Changing the ways of connection among beam, column and slant bracings did not improve the anti-lateral displacement stiffness and other ability.
Key words: engineering structure; double slant bracing; thin-walled cold-formed steel; frame structure; finite element analysis; component connection
发表期数: 2013年1月第2期
引用格式: 李磊磊,陈世鸣. 双斜撑冷弯薄壁型钢框架结构计算模型及分析[J]. 中国科技论文在线精品论文,2013,6(2):135-146.
 
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