采用铁皮网加固片石砌体的抗震性能有限元分析
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摘要
石砌体结构是由石块和砂浆2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种模型进行伪静力模拟分析,分别得出各自的滞回曲线、骨架曲线等抗震性能指标.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、经济可行的方法.
Stone masonry structure is made of stone and mortar,whose characteristics are completely diverse.The seismic performance of stone structure is seriously affected by the weak adhesive force of stone and mortar.Three models are built for it,including the ordinary rubble masonry wall,iron-sheet square-grid reinforced rubble masonry wall and iron-sheet diagonal-grid reinforced rubble masonry wall.Three models are simulated by Pseudo-static analysis through the finite element software ANSYS.Some seismic characteristics are obtained respectively such as hysteresis curves and skeleton curves.By contrast,we could see that ordinary rubble masonry wall is poor in the seismic performance.The seismic performance(such as the energy dissipation capacity,ductility,integrity,etc.) of iron-sheet grid-reinforced rubble masonry wall has been improved to some degree.The latter is a convenient,economic,and effective method.
Stone masonry structure is made of stone and mortar,whose characteristics are completely diverse.The seismic performance of stone structure is seriously affected by the weak adhesive force of stone and mortar.Three models are built for it,including the ordinary rubble masonry wall,iron-sheet square-grid reinforced rubble masonry wall and iron-sheet diagonal-grid reinforced rubble masonry wall.Three models are simulated by Pseudo-static analysis through the finite element software ANSYS.Some seismic characteristics are obtained respectively such as hysteresis curves and skeleton curves.By contrast,we could see that ordinary rubble masonry wall is poor in the seismic performance.The seismic performance(such as the energy dissipation capacity,ductility,integrity,etc.) of iron-sheet grid-reinforced rubble masonry wall has been improved to some degree.The latter is a convenient,economic,and effective method.
引文
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[2]周云,郭永恒,葛学礼,等.我国石结构房屋抗震性能研究进展[J].工程抗震与加固改造,2006,28(4):105-110.
[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,1998,10(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]康永庆.石材工程施工技术[M].沈阳:辽宁科学技术出版社,1997.
[8]王茂龙,刘明,朱浮声,等.有限元法在砌体结构分析中的应用[J].沈阳建筑大学学报(自然科学版),2006,22(1):40-44.
[9]Gambarota L,Lagorarsino S.Damage Models for the SeismicRespose of Brick Masonry Shear Walls.Part I:the MortarJoint Model and Its Applications[J].Earthquake Engineeringand Structural Dynamics,1997(26):423-438.
[10]GB50003-2001,砌体结构设计规范[S].
[11]GB50010-2002,混凝土结构设计规范[S].
[12]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.
[13]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.
[14]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.
[15]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.
[16]李慧,刘进,杜永峰.添加耗能装置的大底板多塔楼基础隔震建筑抗震性能研究[J].甘肃科学学报,2010,22(3):117-121.
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