[1]李箕宝,李鸿晶,孙广俊.底部框架砌体结构地震损伤模拟分析[J].自然灾害学报,2018,(02):033-42.[doi:10.13577/j.jnd.2018.0204]
 LI Jibao,LI Hongjing,SUN Guangjun.Seismic damage analysis of a multi-story brick building with framed first story during the Wenchuan earthquake[J].,2018,(02):033-42.[doi:10.13577/j.jnd.2018.0204]
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底部框架砌体结构地震损伤模拟分析
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2018年02期
页码:
033-42
栏目:
出版日期:
2019-04-28

文章信息/Info

Title:
Seismic damage analysis of a multi-story brick building with framed first story during the Wenchuan earthquake
作者:
李箕宝 李鸿晶 孙广俊
南京工业大学 土木工程学院, 江苏 南京 211816
Author(s):
LI Jibao LI Hongjing SUN Guangjun
College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China
关键词:
底部框架砌体结构地震损伤有限元分析框架-填充墙相互作用短柱破坏
Keywords:
multi-story masonry building with framed first storyseismic damagefinite element analysisframe and infilled walls interactionshort column failure
分类号:
P315.92;TU375;X93
DOI:
10.13577/j.jnd.2018.0204
摘要:
在强烈地震中,大量的底部框架砌体房屋损伤、破坏甚至倒塌,严重威胁着生命财产的安全。在对汶川地震中一栋典型的底部框架砌体结构房屋现场震害调查的基础上,本文采用有限元法分析了其非线性地震反应行为和损伤演化过程,探讨了底部框架结构的地震破坏机理。研究表明:采用精细化有限元建模方法可以比较可靠地模拟结构地震损伤破坏过程。由于填充墙的约束效应,框架柱的实际计算高度减小而成为短柱,地震作用下框架柱在开窗部位发生脆性剪切破坏,是该结构地震破坏的主要原因。抗震设计时宜考虑框架与填充墙的相互作用效应,避免形成短柱破坏。
Abstract:
Multi-story masonry buildings with framed wall in the first story are generally constructed in practice, and usually damaged seriously or collapsed during severe earthquakes. In this paper, the damage of a six story brick building with framed first story was investigated after the Wenchuan earthquake, and a finite element model was established for simulation of its nonlinear dynamic response and damage evolution process, then the seismic damage mechanism was also discussed. The results show the frame columns in the first story were damaged seriously along heights of the opening windows areas on the wall. The main cause is that the actual calculation height of the concrete columns are diminished and become the short columns due to the constraint effects of the infilled walls, so the shear destructions occurred on corresponding parts of the columns. Therefore, the interaction between the frame and the infilled walls should be considered in seismic design to avoid the failure of short columns.

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备注/Memo

备注/Memo:
收稿日期:2017-10-09;改回日期:2018-01-12。
基金项目:国家自然科学基金项目(51478222)
作者简介:李箕宝(1991-),男,硕士研究生,主要从事工程抗震研究.E-mail:lijibao101@163.com
通讯作者:李鸿晶(1966-),男,教授,博士,主要从事地震工程学研究.E-mail:hjing@njtech.edu.cn
更新日期/Last Update: 1900-01-01