空间轻钢框架结构的抗震性能分析方法探讨

英文篇名：Aseismic Performance Research of Light Steel Frames
中文刊名：振动、测试与诊断
英文刊名：Journal of Vibration ; Measurement & Diagnosis
作者：吴迪 ; 罗奇峰 ; 罗永峰
英文作者：Wu Di 1 Luo Qifeng1 Luo Yongfeng2(1 Research Institute of Structure Engineer and Disaster Reduction ; Tongji University Shanghai ; 200092 ; China)(2 Department of Building Engineering ; Tongji University Shanghai ; 200092 ; China)
中文关键词：轻钢结构 ; 空间分析 ; 弹塑性分析 ; 时程分析 ; 单元刚度方程
英文关键词：light steel frame spatial analysis elasto-plastic analysis time history analysis elemental stiffness equation
出版日期：2007-06-15
机构：同济大学结构工程与防灾研究所,同济大学结构工程与防灾研究所,同济大学建工系上海200092,上海200092,上海200092
年：2007
期：02
出版单位：振动、测试与诊断

摘要

根据空间轻钢结构的特点,提出了考虑约束扭转的三维简化塑性铰梁柱单元模型的方法。根据杆层模型和所提出的简化塑性铰模型非线性刚度方程,推导了空间轻钢结构的振动方程,编制了三维空间轻钢结构材料非线性动力计算程序。通过计算结果与ANSYS分析结果进行比较,验证了该方法的正确性。根据分析结果提出了改善非对称空间轻钢结构抗震性能的建议。
A simplified plastic hinge model considering warping effects on the three-dimensional beam-column element is proposed based on the characters of light steel frames.The vibration equation of light steel frames is based on the member-story model and the proposed simplified plastic hinge model.A computer program considering the material nonlinearity is developed to numerically solve the vibration equation of light steel frames.Compared with the numerical results computed by ANSYS,the numerical results obtained by the program developed in this paper are more accurate and reliable.Some valuable suggestions are put forward on how to improve the seismic resistance of unsymmetrical light steel frames according to the results.

引文

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