钢丝网水泥砂浆加固土坯砌体抗震性能研究
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摘要
针对土坯砌体结构纵横墙连接性能差,地震中抗震性能表现拙劣的特点,提出采用钢丝网水泥砂浆加固的方法。采用ANSYS有限元分析软件,运用砌体等效体积单元方法,分别建立了素土坯结构和加固结构的有限元分析模型并进行时程分析。探讨了钢丝网水泥砂浆加固方法对结构自振周期、侧向刚度以及地震作用下结构应力水平和开裂破坏特征的影响。研究表明,采用钢丝网水泥砂浆加固方法能有效地提高结构刚度,减小了结构在地震作用下的位移响应;加固土坯砌体结构在小震作用下仅出现轻微损坏,中震作用下结构的延性和整体性得到改善,提高了土坯房屋的抗震性能。本文研究表明,钢丝网水泥砂浆加固是一种经济有效的方法。
In view of the adobe masonry structure wall poor performance of connection and seismic,ferro-cement mortar strengthening method is presented in this paper. By ANSYS finite element analysis software and masonry equivalent volume element method,adobe and reinforced structure finite element analysis models are established respectively,and time history analysis is carried out. The influence of strengthening methods on the structural natural vibration period,lateral stiffness,structural stress level and crack characteristics is discussed. Studies show that strengthening with ferrocement mortar method can effectively improve the structure stiffness and reduce the displacement response under seismic action; reinforced structures appear only minor damage in moderate.Structural ductility,integrity and seismic performance improve significantly. Ferro-cement mortar strengthening is an economic and effective method.
In view of the adobe masonry structure wall poor performance of connection and seismic,ferro-cement mortar strengthening method is presented in this paper. By ANSYS finite element analysis software and masonry equivalent volume element method,adobe and reinforced structure finite element analysis models are established respectively,and time history analysis is carried out. The influence of strengthening methods on the structural natural vibration period,lateral stiffness,structural stress level and crack characteristics is discussed. Studies show that strengthening with ferrocement mortar method can effectively improve the structure stiffness and reduce the displacement response under seismic action; reinforced structures appear only minor damage in moderate.Structural ductility,integrity and seismic performance improve significantly. Ferro-cement mortar strengthening is an economic and effective method.
引文
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[2]毕磊,颜卫亨,王先平.5·12汶川地震后陕西太白县建筑震害调查分析[J].工程抗震与加固改造,2009,31(4):105~110Bi Lei,Yan Wei-heng,Wang Xian-ping.After 5·12Wenchuan Earthquake Damage Investigation in Shaanxi Taibai[J].Earthquake Resistant Engineering and Retrofitting,2009,31(4):105~110(in Chinese)
[3]王亚勇,葛学礼,袁金西.新疆巴楚M6.8地震房屋震害及经验总结[J].地震工程与工程振动,2003,23(2):172~175Wang Ya-yong,Ge Xue-li,Yuan Jin-xi.Xinjiang Bachu M6.8 Earthquake and Experience Summary of Damage to Housing[J].Earthquake Engineering and Engineering Vibration,2003,23(2):172~175(in Chinese)
[4]黄海燕,叶燎原,缪升,等.云南地区村镇建筑的抗震设防对策研究[J].工程抗震与加固改造,2008,(S1)Huang Hai-yan,Ye Liao-yuan,Miao Sheng,et al.Research on Yunnan Province Town Buildings Earthquake-proof Countermeasures[J].Earthquake Engineering and Retrofitting,2008(S1)(in Chinese)
[5]阿肯江·托呼提,亓国庆,等.新疆南疆地区传统土坯房屋震害及抗震技术措施[J].工业建筑,2008,(21):189~193Akenjiang Tuohuti,Qi Guo-qing,et al.The Traditional Adobe Building Damage and Seismic Technology Initiatives in Southern Xinjiang[J]Industrial Construction,2008,(21):189~193(in Chinese)
[6]Anthoine A.Derivation of the In-plane Elastic Characteristics of Masonry Through Homogenization Theory[J].International Journal of Solids and Structures,1995,32(2):137~163
[7]刘振宇,叶燎原,潘文.等效体积单元(RVE)在砌体有限元分析中的应用[J].工程力学,2003,20(2):31~35Liu Zhen-yu,Ye Liao-yuan,Pan Wen.Application of Representative Volume Element in the Finite Element Analysis of Masonry Structures[J].Engineering Mechanics,2003,20(2):31~35(in Chinese)
[8]Wu C,Hao H.Derivation of 3D Masonry Properties Using Numerical Homogenization Technique[J].International Journal for Numerical Methods in Engineering,2006,66(11):1717~1737
[9]姜忻良,王亭,李茂鋆.加固的历史风貌建筑墙体试验及结构抗震分析[J].工程抗震与加固改造,2012,34(2):22~27Jiang Xin-liang,Wang Ting,Li Mao-yun.Experiment on Reinforced Walls and Anti-seismic Analysis of Historical Character Buildings[J].Earthquake Resistant Engineering and Retrofitting,2012,34(2):22~27(in Chinese)
[10]梁城宇,车轶.基于RVE方法的喷射混凝土加固多层砌体结构抗震性能分析[J].工程抗震与加固改造,2012,33(6):12~17Liang Cheng-yu,Che Yi.Based on the RVE Method of Sprayed Concrete Reinforcement Multi-story Masonry Structure Seismic Performance Analysis[J].Earthquake Resistant Engineering and Retrofitting,2012,33(6):12~17(in Chinese)
[11]李英民,韩军,刘立平.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):90~96Li Ying-min,Han Jun,Liu Li-ping.Application of ANSYS to Finite Element Analysis for Nonlinear Masonry Structures[J].Journal of Chongqing Jianzhu University,2006,28(5):90~96(in Chinese)
[12]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005Jiang Jian-jing,Lu Xin-zheng,Ye Lie-ping.Finite Element Analysis of Concrete Structures[M].Beijing:Tsinghua University Press,2005(in Chinese)
[13]卡米力·外力.木柱,梁—土坯组合墙体抗侧承载力试验研究[D].乌鲁木齐:新疆大学,2012Waili Kamili.Experimental Study on Lateral Bearing Capacity of Composite Adobe Wall with Timber Frame[D].Urumqi:Xinjiang University,2012(in Chinese)
[14]白峻昶,靳金平.时程分析用地震波选取的探讨[J].山西建筑,2007,33(3):62~63Bai Jun-chang,Jin Jin-ping.Seismic Waves Selection in Time History Analysis[J]Shanxi Architecture,2007,33(3):62~63(in Chinese)
[15]孙军杰,徐舜华,王兰民,等.基于有限元法的土坯民房地震响应分析研究[J].防灾减灾工程学报,2010,30(1):64~70Sun Jun-jie,Xu Shun-hua,Wang Lan-min.Adobe Houses Response Analysis Based on the Finite Element Method[J]Journal of Disaster Prevention and Mitigation Engineering,2010,30(1):64~70(in Chinese)
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