| 考虑二阶效应的高层钢结构框架—支撑体系简捷分析 |
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| 引用本文： | 郑廷银 赵惠麟 等. 考虑二阶效应的高层钢结构框架—支撑体系简捷分析[J]. 南京建筑工程学院学报, 2002, 0(3): 1-7,18 |
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| 作者姓名： | 郑廷银 赵惠麟 等 |
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| 作者单位： | [1]南京工业大学土木工程学院，江苏南京210009 [2]东南大学土木工程学院，江苏南京210096 |
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| 基金项目： | 江苏省建设厅资助项目 (JS2 0 0 12 0 ) |
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| 摘 要： | 为了探讨高层钢结构中框架－支撑体系二阶分析的简捷算法，本文从简化结构分析模型入手，通过刚度等效原则，将支撑和框架的二阶效应分别等效为各自的负刚度，将支撑斜杆的抗剪作用等效为楼盖处的弹簧，并通过合成法将框架－支撑体系等效为剪切型等效柱与弯曲型等效柱的并联模型，从而可按一阶分析方法建立结构的刚度方程并求解。该法可避免常规二阶分析的反复迭代，计算速度快，所用时机少，文末通过数值算例检验了该模型的适用性和可靠性。
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| 关 键 词： | 二阶效应 高层钢结构 框架－支撑体系 负刚度 |
A Simple Model of Braced Steel Frames in High-rise Building Considering Second Order Effects |
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| ZHENG Ting yin ,WANG Zi jun ,ZHAO Hui ling. A Simple Model of Braced Steel Frames in High-rise Building Considering Second Order Effects[J]. Journal of Nanjing Architectural and Civil Engineering Institute(Natural Science), 2002, 0(3): 1-7,18 |
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| Authors: | ZHENG Ting yin WANG Zi jun ZHAO Hui ling |
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| Affiliation: | ZHENG Ting yin 1,WANG Zi jun 1,ZHAO Hui ling 2 |
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| Abstract: | To study the simplied approach for second order analysis of braced steel frames in high rise buidings,according to stiffness equivalent principle the second order effect of structures is made equivalent to negative stiffness,shear resistant effect of braces to a spring on floor,and braced frame system is made equivalent to a parallel model of bending equivalent column and shear equivalent column with compound method.Using the model iteration can be avoided,calculation can be accelerated,and time can be saved.The reliability and feasibility of the method is inspected by sample calculation. |
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| Keywords: | braced steel frame second order effect simple model negative stiffness |
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