[1]陆金钰,舒赣平,包永成.基于柔度法单元的钢框架结构连续倒塌分析[J].东南大学学报(自然科学版),2015,45(4):763-768.[doi:10.3969/j.issn.1001-0505.2015.04.026]
 Lu Jinyu,Shu Ganping,Bao Yongcheng.Progressive collapse analysis of steel frame structures using flexibility-based element[J].Journal of Southeast University (Natural Science Edition),2015,45(4):763-768.[doi:10.3969/j.issn.1001-0505.2015.04.026]
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基于柔度法单元的钢框架结构连续倒塌分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第4期
页码:
763-768
栏目:
土木工程
出版日期:
2015-07-20

文章信息/Info

Title:
Progressive collapse analysis of steel frame structures using flexibility-based element
作者:
陆金钰12舒赣平12包永成1
1东南大学混凝土与预应力混凝土结构教育部重点实验室, 南京210096; 2东南大学国家预应力工程技术研究中心, 南京210096
Author(s):
Lu Jinyu12 Shu Ganping12 Bao Yongcheng1
1Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
2National Prestress Engineering Research Center, Southeast University, Nanjing 210096, China
关键词:
柔度法 OpenSees 连续倒塌 钢框架结构 抽柱法
Keywords:
flexibility method OpenSees progressive collapse steel frame structure removing column method
分类号:
TU391;TU312.3
DOI:
10.3969/j.issn.1001-0505.2015.04.026
摘要:
基于柔度法理论,运用OpenSees软件对钢框架结构的连续倒塌进行了全过程模拟分析,并采用柔度法单元对梁柱构件进行四段式划分,以实现对构件断裂的模拟.采用抽柱法,给出了结构连续倒塌的动力计算流程.以2个6层平面钢框架为数值算例,分析了结构失效点位移时程、构件塑性铰与断裂顺序,发现失效柱两侧的梁端部首先出现塑性铰,梁端断裂是框架发生整体倒塌的主要原因.最后通过与ABAQUS壳元分析结果及钢框架倒塌试验结果对比,验证了该方法的可行性与正确性,可在实际工程中应用.
Abstract:
Based on the flexibility method, whole process simulation for the progressive collapse of steel frame structures was conducted using OpenSees. Flexibility-based element was adopted to divide beam and column into four parts to achieve the fracture simulation of member. Based on the removing column method, the analysis procedure of structural progressive collapse was proposed. Two 6-storey steel frame examples were given to analyze the time history of failed nodal displacement and the sequence of members’ plastic hinges and fractures. It is indicated that plastic hinges first appear in the ends of beams near the failed column. Member fracture in the beam ends is the main cause of collapse of the whole frame. The proposed method is verified by the results from ABAQUS software package and experiments. It can be applied to practical engineering in future.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-12-16.
作者简介: 陆金钰(1981—),男,博士,副教授,davidjingyu@gmail.com.
基金项目: 国家自然科学基金资助项目(51178098,51208263)、东南大学优秀青年教师教学科研资助计划资助项目(2242014R30005).
引用本文: 陆金钰,舒赣平,包永成.基于柔度法单元的钢框架结构连续倒塌分析[J].东南大学学报:自然科学版,2015,45(4):763-768. [doi:10.3969/j.issn.1001-0505.2015.04.026]
更新日期/Last Update: 2015-07-20