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不等线刚度比、非对称荷载作用下框架结构的稳定
引用本文:闫冬冬,蔺鹏臻. 不等线刚度比、非对称荷载作用下框架结构的稳定[J]. 水利与建筑工程学报, 2011, 9(4): 138-141
作者姓名:闫冬冬  蔺鹏臻
作者单位:1. 铁道第三勘察设计院集团有限公司,天津,300142
2. 甘肃省道路桥梁与地下工程重点实验室,甘肃兰州,730070
摘    要:工程中大多框架结构都具有非等梁柱刚度比且处于非对称荷载的作用下。利用矩阵位移法推导了不等梁柱线刚度比、非对称荷载作用下框架结构适应性稳定方程、讨论了结构的临界荷载和长度因数的变化规律,并给出了将框架结构离散为杆系结构的条件。补充了文献[1]对非对称荷载和刚度考虑的不足。

关 键 词:不等梁柱线刚度比  非对称荷载  框架结构  稳定

Stability of Frame Structures under Different Line Stiffness Ratio and Asymmetric Loads
YAN Dong-dong,LIN Peng-zhen. Stability of Frame Structures under Different Line Stiffness Ratio and Asymmetric Loads[J]. Journal of Water Resources Architectural Engineering, 2011, 9(4): 138-141
Authors:YAN Dong-dong  LIN Peng-zhen
Affiliation:YAN Dong-dong1,LIN Peng-zhen2(1.Railway Third Survey and Design Institute Group Co.,Ltd.,Tianjin 300142,China,2.Key Laboratory of Road Bridge and Underground Engineering of Gansu Province,Lanzhou,Gansu 730070,China)
Abstract:The most frame structures in engineerings have different line stiffness ratio and are effected by asymmetric loads.Here the adaptability stability equation of frame structures is deduced under the different line stiffness ratio and asymmetric loads,the change rule of the critical load and length factor is discussed,and the conditions of conversion between frame structure and rod structure are given.
Keywords:different line stiffness ratio  asymmetric loads  frame structure  stability  
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