地震动作用下单层砌体结构倒塌模拟
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摘要
地震发生时建筑物的倒塌是造成人员伤亡的最直接原因。在地震救援时,救援人员对废墟形式的准确了解能够有效地提高救援效率。倒塌废墟形成规律的研究方法多种多样,利用数值方法模拟建筑物倒塌也是一种值得尝试的方法。利用数值方法进行结构倒塌模拟时可以通过程序开发分析,也可以直接使用显示动力分析软件分析。不管使用何种数值方法,结构构件的材料特性和断裂处理都直接影响着计算结果的准确度。本文基于显式动力分析软件LS-DYNA,使用winfrith材料模型和基于裂缝宽度相关的失效准则,进行了单层砌体振动台试验模型的倒塌模拟分析,并与试验结果进行了对比。结果表明,此方法较为可靠,可进行砌体结构的倒塌模拟。
In an earthquake,the collapse of buildings is the most direct cause of casualties. In a seismic rescue,the exact realization of the ruin formation can improve the rescue effectively. Research methods of collapse ruins formations are varied,but the numerical method is also worth being attempted. The collapse simulation of structures with the numerical method can be implemented with application program developments,it can also be directly implemented with explicit dynamic software. No matter which kind of numerical method is used,both the material property of structure members and the fracture processing method directly affect the accuracy of the calculation result. In the paper,the collapse simulation of a single-story masonry test model is achieved with dynamic software LS-DYNA,using Winfrith material model and failure criterion based on the crack width. The comparison between test and calculation results shows that the method is reliable and can be used for the collapse simulation of masonry.
引文
[1]胡晓斌,钱稼茹.结构连续倒塌分析与设计方法综述[J].建筑结构,2006,36(s1):79-83.HU Xiaobin,QIAN Jiaru.Overview of analysis and design approaches for progressive collapse of structures[J].Building Structure,2006,36(s1):79-83.(in Chinese)
    [2]陆新征,江见鲸.世界贸易中心飞机撞击后倒塌过程的仿真分析[J].土木工程学报,2001,34(6):8-10.LU Xinzheng,JIANG Jianjing.Dynamic finite element simulation for the collapse of world trade center[J].China Civil Engineering Journal,2001,34(6):8-10.(in Chinese)
    [3]刘海卿,倪镇国,欧进萍.强震作用下砌体结构倒塌过程仿真分析[J].地震工程与工程振动,2008,28(5):38-42.LIU Haiqing,NI Zhenguo,OU Jinping.Simulation analysis of the collapse response of masonry structures subjected to strong ground motion[J].Earthquake Engineering and Engineering Dynamics,2008,28(5):38-42.(in Chinese)
    [4]姚新强.规则平面西藏单层砌体打包带加固抗震试验与有限元模拟分析[D].哈尔滨:中国地震局工程力学研究所,2011.YAO Xinqiang.Polypropylene band sstrengthening seismic test on tibet single masonry of regular plane and finite element simulation analysis[D].Harbin:Insitute of Engineering Mechanics,China Earthquake Administration,2011.(in Chinese)
    [5]LOU Yafei,SUN Baitao,ZHANG Xuan.The masonry crack propagation simulation based on LS-DYNA[C]∥2014 3rdInternational Conference on Advanced Structure,Materials and Engineering.Wuhan:Trans Tech Publications Ltd,2014:105-110.
    [6]唐岱新.现代砌体结构[M].北京:高等教育出版社,2002:19-39.TANG Daixin.Modern masonry structure[M].Beijing:Higher Education Press,2002:19-39.(in Chinese)
    [7]刘桂秋.砌体结构基本受力性能的研究[D].长沙:湖南大学,2005.LIU Guiqiu.The research on the basic mechanical behavior of masonry structure[D].Changsha:Hunan University,2005.(in Chinese)
    [8]GB50005-2003木结构设计规范[S].北京:中国建筑工业出版社,2003.GB50005-2003 Code for Design of Timber Structures[S].Beijing:Building Industry Press of China,2003.(in Chinese)
    [9]Comite Euro-International Du Beton.CEB-FIP Model Code 1990[S].London:Thomas Telford Services Ltd,1993:34-37.
    [10]Hilsdorf H K,Brameshuber W.Code-type formulation of fracture mechanics concepts for concrete[J].International Journal of Fracture,1991,51:61-72.
    [11]徐有明.木材学[M].北京:中国林业出版社,2006:100-119.XU Youming.Xylology[M].Beijing:Forestry Press of China,2006:100-119.(in Chinese)
    [12]LS-DYNA Keywords user’s manual volumeⅡ(version971)[Z].Livermore Software Technology Corporation(LSTC),2007.
    [13]GB50003-2011砌体结构设计规范[S].北京:中国建筑工业出版社,2011.GB50003-2011 Code for Design of Masonry Structures[S].Beijing:Building Industry Press of China,2011.(in chinese)

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