无构造柱退层式砖砌体结构振动台试验研究
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摘要
通过模拟地震振动台试验和非线性有限元分析,对一种自建典型民居(无构造柱退层式砖砌体结构)的抗震性能进行研究。结果表明:1此类结构能够承受峰值加速度为0.2g的地震作用;当峰值加速度达到并超过0.3g时,结构严重破坏,甚至倒塌;2结构第1层纵墙退层处的墙体以及第3层楼梯间和窗间墙破坏最为严重,为结构的薄弱部位,应考虑加固;3砌体结构的有限元模拟可采用整体连续模型。计算中通过定义材料的塑性应力-应变关系和损伤因子来模拟构件的非线性,从而实现模型的非线性分析,与试验结果的对比表明该方法的有效性。研究的结构形式在我国村镇广泛存在,因此研究成果适用于不同地区同等结构形式的自建民居抗震性能评价与加固改造。
Based on shaking table test and nonlinear finite element analysis, the dynamic performance of a typical s elf-built dwelling model, brick masonry building without structural column, were studied. The results showed that:1 The typical rural house is able to withstand earthquake action corresponding to peak acceleration 0.2g, but when the peak acceleration is more than 0.3g, the structure will be seriously damaged or even collapse. 2 Two parts of the dwelling are severely damaged, one is the wall with the change of vertical stiffness in the first floor, and the other is the wall of the stairwell and windows in the third floor. They can be regarded as weaknesses of the structure,and reinforcement programs should focus on two parts. 3 The finite element analysis of the masonry structure was implemented by using the continuum model, in which the mechanical properties of brick masonry was approximately simulated by the plastic damage model, and the nonlinear analysis of model was carried out by defining plastic stress-strain relations and damage factor of concrete. And the results of the finite element simulation are consistent with that of test. Because the dwelling studied in this paper is also widely exist in towns of China, the results can also be applied to estimat e the dynamic performance and provide strengthen layout for the same structure in the different regions.
引文
[1]潘明辉,缪升.从云南省大姚县6.2级地震看我国小城镇和村镇房屋存在的抗震问题[J].世界地震工程,2004,20(4):85-89(Pan Minghui,Miao Sheng.The antiseismic problems of the existing buildings in the villages and towns of China from the earthquake of 6.2 magnitude in Dayao county of Yunnan province[J].World Earthquake Engineering,2004,20(4):85-89(in Chinese))
    [2]孟萍.村庄与集镇木结构房屋建筑抗震措施经济分析[D].昆明:昆明理工大学,2006(Meng Ping.The economic analysis of the seismic resistant measures of the buildings with wood framework in villages and small towns[D].Kunming:Kunming University of Scien ce&Technology,2006(in Chinese))
    [3]曹万林,周中一,王卿,等.农村房屋新型隔震与抗震砌体结构振动台试验研究[J].振动与冲击,2011,30(11):209-213(Cao Wanlin,Zhou Zhongyi,Wang Qing,et el.Experimental study on base vibration isolation and antiseismic masonry structure in rural areas by shaking table test[J].Journal of Vibration and Shock,2011,30(11):209-213(in Chinese))
    [4]Dhanasekar M,Haider W.Explicit finite element analysis of lightly reinforced masonry shear walls[J].Computer&Structure,2008,86(1/2):15-26
    [5]黄维平,王连广.人工质量在砖混结构振动台试验中的作用[J].地震工程与工程振动,2001,21(3):99-103(Huang Weiping,Wang Guanglian.Effect of shaking table for masonry structures[J].Earthquake Engineering and Engineering Vibration,2001,21(3):99-103(in Chinese))
    [6]吕西林,周德源.砌体结构墙体模型振动台试验及其动力相似关系[J].工程抗震,1993,9:12-16(Lu Xilin,Zhou Deyuan.Masonry structure wall model shaking table test and relation of dynamic similarity[J].Earthquake Resistant Engineering,1993,9:12-16(in Chinese))
    [7]GB 18306—2001地震动参数区划图[S].北京:中国标准出版社,2001(GB 18306—2001 Seismic ground motion parameter zonation map of China[S].Beijing:Standards Press of China,2001(in Chinese))
    [8]李英民,韩军,刘丽平.ANSYS在砌体结构非线性有限元分析中的应用研究[J].重庆建筑大学学报,2006,28(5):90-97(Li Yingmin,Han Jun,Liu Liping.Application of ANSYS to finite element analysis for nonlinear masonry structures[J].Journal of Chongqing Jianzhu University,2006,28(5):90-97(in Chinese))
    [9]陆新征,叶列平,廖志伟,等.建筑抗震弹塑性分析[M].北京:中国建筑工业出版社,2009
    [10]王玉镯,傅传国.ABAQUS结构工程分析及实例详解[M].北京:中国建筑工业出版社,2010
    [11]Cecchi A,Sab K.Out of plane model for heterogeneous periodic materials:the case of masonry[J].Journal of Mechanics&Solids,2002,21:715-746
    [12]GB 50003—2011砌体结构设计规范[S].北京:中国建筑工业出版社,2011(GB 50003—2011 Code for design of masonry structures[S].Beijing:China Architecture&Building Press,2011(in Chinese))

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