石砌文物墙体的抗震性能及加固技术研究
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摘要
石砌体结构是国内外重要文物常用的结构材料之一,对石砌墙体抗震加固成为保护这类文物的重要途径。石砌体结构是由石块和砂浆两种性质截然不同的材料砌筑而成的,由于二者之间粘结力的薄弱,严重影响了石砌体结构的抗震性能。为此建立了3种模型,分别为普通石砌体墙,铁皮方格网加固石砌体墙和铁皮斜格网加固石砌体墙。通过有限元软件ANSYS对3种模型进行数值模拟分析,探讨了加固方案的可行性,并在此基础上进行试验研究。通过对比可知,普通石砌体墙的抗震性能比较差,铁皮网加固后的石砌体墙的耗能能力、延性、整体性等抗震指标都有一定程度的提高,铁皮网加固石砌体是一种施工方便、可行的方法。
Stone masonry is one of the most important structura l material in historical structures of our country and other countries,and its se ismic retrofitting is particularly important method to protecting historical str uctures.Stone masonry structure is made of stone and mortar,which characterist ics is completely different.The seismic performance of stone structure is serio usly affected by the weak adhesive force of stone and mortar.Three models is bu ild for it,which are the ordinary rubble masonry wall,iron sheet square grid r einforcement of rubble masonry wall and iron sheet diagonal grid reinforcement o f rubble masonry wall separately.Three models is simulated by Pseudo-static an alysis through the finite element software ANSYS to discuss about the feasibilit y of this method,research was done by the experiments on the basis of finite el ement analysis.By contrast,we could see that the seismic performance of ordina ry rubble masonry wall is worse.The seismic performance(such as the energy dis sipation capacity,ductility,integrity,etc.) of iron sheet grid reinforcement of rubble masonry wall has some certain improved.And iron sheet grid reinforcem ent of rubble masonry is a convenient,economic,and effective method.
Stone masonry is one of the most important structura l material in historical structures of our country and other countries,and its se ismic retrofitting is particularly important method to protecting historical str uctures.Stone masonry structure is made of stone and mortar,which characterist ics is completely different.The seismic performance of stone structure is serio usly affected by the weak adhesive force of stone and mortar.Three models is bu ild for it,which are the ordinary rubble masonry wall,iron sheet square grid r einforcement of rubble masonry wall and iron sheet diagonal grid reinforcement o f rubble masonry wall separately.Three models is simulated by Pseudo-static an alysis through the finite element software ANSYS to discuss about the feasibilit y of this method,research was done by the experiments on the basis of finite el ement analysis.By contrast,we could see that the seismic performance of ordina ry rubble masonry wall is worse.The seismic performance(such as the energy dis sipation capacity,ductility,integrity,etc.) of iron sheet grid reinforcement of rubble masonry wall has some certain improved.And iron sheet grid reinforcem ent of rubble masonry is a convenient,economic,and effective method.
引文
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[3]施养杭.新型抗震灌浆加固材料的技术研究[J].基建优化,2004,25(2):47-50.
[4]陈宙.农村干砌石结构房屋的抗震加固研讨[J].工程抗震,1998,(4):44-47.
[5]宋彧,原国华,周乐伟.斜拉筋加固砌体结构抗震性能试验研究[J].建筑技术,2009,40(1):42-44.
[6]杜永峰,寇佳亮,杨静成,等.纤维砂浆加固多孔砖砌体墙片抗震性能试验研究[J].兰州理工大学学报,2009,35(3):107-110.
[7]GB50010-2011,混凝土结构设计规范[S].
[8]陆春阳,何崇禹.混凝土结构及砌体结构[M].重庆:重庆大学出版社,1998.
[9]刘建生,安学军,苏跃.石砌体的本构关系[J].建筑结构,1995,25(10):28-33.
[10]小飒工作室.最新经典ANSYS及Workbench教程[M].北京:电子工业出版社,2004.
[11]沈聚敏,周锡元,高小旺,等.抗震工程学[M].北京:中国建筑工业出版社,2000.
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