3·11大地震中大空间结构破坏主因及加固对策
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
通过对日本3·11大地震的震后现场调查,发现既有大跨空间结构梁柱连接节点的设计假定与真实情况不符。本次地震造成了这类建筑钢屋架与混凝土柱的连接部位普遍存在不同程度的损坏,在同类建筑中,作为灾民临时避难安置场所的500余座体育馆建筑,存在极大的安全隐患。为了探究这类损伤的原因,建立了某一体育馆的结构整体模型和连接部位的精细化弹塑性模型,并有针对性地提出了在连接处安装橡胶垫的加固方法,通过数值模拟计算和现场实测证明这是一种有效易行的节点连接加固方法。
According to the survey for the Great East Japan Earthquake,the traditional calculation assumption of the beam column connection of large span structures was found that it cannot reflect real situation properly.During the earthquake,around 500 stadium buildings served as temporary refuges in Tohoku area got damage,especially the connections between the steel roofs and the RC columns,which indicated the potential risks in similar buildings. For further investigation of the failure mechanism,the global structure model and local elastoplasticity model for the connection are set up. A retrofit method by using rubber blanket as bearing supporters in the connections is presented and investigated. The numerical simulation and site test results show the validity of the proposed method.
引文
[1]The Japan Building Disaster Prevention Association.Guideline for post-earthquake damage evaluation and rehabilitation technique[S].Japan:the Japan Building Disaster Prevention Association,2001.(in Japanese)
    [2]National Institute for Land and Infrastructure Management,Building Research Institute.Summary of the field survey and research on“the 2011 off the Pacific Coast of Tohoku Earthquake”[R].2011.(in Japanese)
    [3]Koyama T,Iyama J,Yamada S,et al.Damage to steel educational facilities in the 2011 East Japan Earthquake:part 1 outline of the reconnaissance and damage to major structural components[C].15th World Conference on Earthquake Engineering,Lisbon,Portugal,2012.
    [4]Dai J,Qu Z,Zhang C,et al.Preliminary investigation of seismic damage to two steel space structures during the2013 Lushan Earthquake[J].Earthquake Engineering and Engineering Vibration,2013,12:497-500.
    [5]Systèmes D.Computer Program ABAQUS/CAE[M].France,2010.
    [6]Systèmes D.ABAQUS 6.10 Analysis User’s Manual[M].Abaqus 6.10 Documentation,2010.
    [7]Systèmes D.ABAQUS/CAE 6.10 User’s Manual[M].Abaqus 6.10 Documentation,2010.
    [8]Wilson E L.SAP2000:Integrated finite element analysis and design of structures[M].Berkeley:Computers and Structures,1998.
    [9]中华人民共和国建设部.GB 50017—2003钢结构设计规范[S].北京:中国计划出版社,2003.Ministry of Construction of the People’s Republic of China.GB 50017—2003 Code for design of steel structures[S].Beijing:China Planning Press,2003.(in Chinese)

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心