芦山地震中大跨空间结构主要破坏模式及数值分析

英文篇名：Failure patterns of large span space structures in Lushan earthquake and numerical simulation
中文刊名：土木工程学报
英文刊名：China Civil Engineering Journal
作者：聂桂波 ; 戴君武 ; 张辰啸 ; 支旭东
英文作者：Nie Guibo ; Dai Junwu ; Zhang Chenxiao ; Zhi Xudong ; Institute of Engineering Mechanics ; China Earthquake Administration ; Key Laboratory of Earthquake Engineering and Engineering Vibration ; China Earthquake Administration ; Harbin Institute of Technology
中文关键词：芦山地震 ; 大跨空间结构 ; 地震破坏 ; 数值模拟 ; 地震损伤
英文关键词：Lushan earthquake ; large span space structure ; seismic destruction ; numerical simulation ; seismic damage
出版日期：2015-04-15
机构：中国地震局工程力学研究所;中国地震局地震工程与工程振动重点实验室;哈尔滨工业大学;
年：2015
期：04
出版单位：土木工程学报

摘要

2013年4月20日在四川省雅安市芦山县发生了7.0级地震,地震造成196人死亡和21人失踪,经济损失亦极其巨大。此次地震中一些大跨空间钢结构发生较显著的破坏,这是与以往历次震害最大的不同之处。文中总结了芦山体育馆和芦山中学体育馆这两个大跨空间钢结构在此次地震作用下结构发生破坏的主要部位和典型的破坏模式,并分析造成这些破坏的主要原因。针对芦山县体育馆进行现场实测,并与震害结果进行对比,结果表明,结构发生了较明显的扭转现象。以芦山县中学体育馆为例,通过有限元软件ANSYS对其地震下的破坏机理进行数值模拟,并与实际震害进行对比分析。在此基础上,对大跨空间钢结构的抗震设计和施工提出一些合理的意见和建议。
In the Ms7. 0 Lushan earthquake on April 20 of 2013,196 people were dead,24 people were missing,and at least 11826 people were injured. The economic loss and casualties are big. Some significant large span space steel structures are destructed in this earthquake,which is obviously different from the previous earthquake disasters. Typical damage patterns and positions of Lushan gymnasium and Lushan high school gymnasium are summarized. The structural damage distributions of the two large span space structures are described in detail and possible reasons are roughly summarized. The measurement results of Lushan gymnasium show that obvious torsion occurred in the structure. Taking Lushan high school gymnasium as example,the damage mechanism of the earthquake is simulated by the finite element software ANSYS and the results are compared with the actual structural damage. Furthermore,some comments and suggestions on anti-seismic design and construction of large span space steel structures are proposed.

引文

[1]崔鸿超.日本兵库县南部地震震害综述[J].建筑结构学报,1996,17(1):2-13
    [2]黄炳生.日本神户地震中建筑钢结构的震害及启示[J].建筑结构,2000,30(9):24-25
    [3]刘洪波,谢礼立,邵永松.钢框架结构的震害及其原因[J].世界地震工程,2006,22(4):47-51(Liu Hongbo,Xie Lili,Shao Yongsong.The earthquake damage of steel frame buildings and the causes of brittle facture[J].World Earthquake Engineering,2006,22(4):47-51(in Chinese))
    [4]高文军,唐光武,林坤.钢结构震害及抗震研究[J].公路交通技术,2008(增):66-69(Gao Wenjun,Tang Guangwu,Lin Kun.Earthquake hazard to steel frame and anti-earthquake investigation[J].Technology of Highway and Transport,2008(S):66-69(in Chinese))
    [5]李国强,孙飞飞.关于钢结构抗震存在的问题及建议[J].地震工程与工程振动,2006,26(3):108-114(Li Guoqiang,Sun Feifei.Some problems and suggestions on seismic design of high-rise steel structures[J].Earthquake Engineering and Engineering Vibration,2006,26(3):108-114(in Chinese))
    [6]尹保江,杨沈,肖疆.钢结构震损建筑抗震加固修复技术研究[J].土木工程与管理学报,2011,28(3):83-88(Yin Baojiang,Yang Shen,Xiao Jiang.Study on seismic strengthening of earthquake damaged steel structure[J].Journal of Huazhong University of Science and Technology&Urban Science,2011,28(3):83-88(in Chinese))