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支撑框架结构在水平荷载下的简化计算

发表时间:2013-07-31  浏览量:968  下载量:490
全部作者: 王海波,罗炳贵
作者单位: 中南大学土木工程学院
摘 要: 提出考虑支撑框架中柱的弯曲变形和支撑对抗弯刚度影响的计算方法,推导其刚度矩阵,并结合D值法对支撑框架的刚度矩阵进行修正。分析不同高宽比、梁柱线刚度比等参数的影响。结果表明:当支撑框架总高度较低时,不能忽略柱的弯曲变形及支撑对结构位移的影响,而当支撑框架总高度较高时,支撑框架中柱的弯曲变形及支撑对结构的水平位移影响很小,可忽略不计;在支撑钢管混凝土框架中,可不考虑梁柱线刚度比的变化对支撑框架部分水平位移的影响。
关 键 词: 混凝土与钢筋混凝土结构;支撑框架;钢管混凝土;水平荷载
Title: Implicit precise simplified calculation of the braced frame structure under horizontal loads
Author: WANG Haibo, LUO Binggui
Organization: School of Civil Engineering, Central South University
Abstract: In this paper, the rigidity matrix of the braced steel frame was deduced by considering the flexural deformation of the pillar and the bending rigidity of the brace. It was applied into the bracing concrete-filled rectangular steel tubular frame by revising it through amendatory contraflexure point method. Analysis was made for the influence of such parameters as width-length ratio and ratio of beam rigidity. Calculation results showed that when the total height of the braced frame was lower, the influence of column’s bending deformation and brace’s stiffness on the structural displacement could not be ignored, while the total height of the braced frame was higher, the influence was very small and could be neglected. In the concrete filled steel tube braced frame, it could take no account of the influence of change of beam-column linear stiffness ratio on the horizontal displacement of braced frame.
Key words: concrete and reinforced concrete structure; braced frame; concrete filled steel tube; horizontal loads
发表期数: 2013年7月第14期
引用格式: 王海波,罗炳贵. 支撑框架结构在水平荷载下的简化计算[J]. 中国科技论文在线精品论文,2013,6(14):1318-1324.
 
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