[1]马人乐,林国铎,陈俊岭,等.水平分布柱间支撑对多高层钢框架抗连续倒塌性能的影响[J].东南大学学报(自然科学版),2009,39(6):1200-1205.[doi:10.3969/j.issn.1001-0505.2009.06.022]
 Ma Renle,Lin Guoduo,Chen Junling,et al.Effects of horizontal column-and-braces on progressive collapse resistance of multi-story and high-rise steel frame[J].Journal of Southeast University (Natural Science Edition),2009,39(6):1200-1205.[doi:10.3969/j.issn.1001-0505.2009.06.022]
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水平分布柱间支撑对多高层钢框架抗连续倒塌性能的影响()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第6期
页码:
1200-1205
栏目:
土木工程
出版日期:
2009-11-20

文章信息/Info

Title:
Effects of horizontal column-and-braces on progressive collapse resistance of multi-story and high-rise steel frame
作者:
马人乐 林国铎 陈俊岭 何敏娟
同济大学建筑工程系,上海 200092
Author(s):
Ma Renle Lin Guoduo Chen Junling He Minjuan
Department of Building Engineering, Tongji University, Shanghai 200092, China
关键词:
连续性倒塌 杆件移除 动力非线性分析 LS-DYNA软件 支撑
Keywords:
progressive collapse member removal dynamic nonlinear analysis LS-DYNA software braces
分类号:
TU393
DOI:
10.3969/j.issn.1001-0505.2009.06.022
摘要:
通过LS-DYNA动力非线性分析,研究了水平支撑对多高层钢框架结构抗连续倒塌性能的影响.以一幢10层钢框架结构为原型,分别对纯框架和二层布置水平支撑2种结构方案进行了分析.采用备用荷载路径法,即在结构稳定状态下突然移除底层1根或相邻2根承重柱,分析结构在移除底层柱后的动力响应.分析结果表明,水平支撑能显著减小破坏部位的竖向位移,使同层各柱轴力分配趋于均匀化,从而提高结构的抗连续倒塌能力.根据有限元计算结果并考虑到经济因素的影响,多高层钢框架底层柱子轴压比在常规荷载作用下应控制在0.3~0.4之间.
Abstract:
The effects of horizontal column-and-braces on progressive collapse resistance of steel frames were investigated using dynamic nonlinear simulation by LS-DYNA software. Two structure schemes have been considered: namely, unbraced frames and frames with braces in second floor. The study was conducted on a 10-story prototype buildings by applying the alternate path method. In this methodology, one or two bottom columns were removed instantaneously from analysis models and the ability of the models to successfully absorb member loss was investigated. The simulation results show that horizontal braces can improve the progressive collapse resistance of steel frames, evidently reducing the vertical displacement on failure spot and uniforming the axial force on all columns. Considering both simulation results and economy,it is suggested that axial load ratio of lower load-bearing columns should generally be controlled within 0.3 and 0.4.

参考文献/References:

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相似文献/References:

[1]张雷,李泓昊.钢框架结构抗连续性倒塌性能试验研究[J].东南大学学报(自然科学版),2018,48(4):687.[doi:10.3969/j.issn.1001-0505.2018.04.014]
 Zhang Lei,Li Honghao.Experimental study on progressive collapse resistance of steel framed structures[J].Journal of Southeast University (Natural Science Edition),2018,48(6):687.[doi:10.3969/j.issn.1001-0505.2018.04.014]

备注/Memo

备注/Memo:
作者简介: 马人乐(1951—),男,硕士,教授,博士生导师,marenle@tongji.edu.cn.
基金项目: 国家自然科学基金资助项目(50708070).
引文格式: 马人乐,林国铎,陈俊岭,等.水平分布柱间支撑对多高层钢框架抗连续倒塌性能的影响[J].东南大学学报:自然科学版,2009,39(6):1200-1205. [doi:10.3969/j.issn.1001-0505.2009.06.022]
更新日期/Last Update: 2009-11-20