高温下叠层橡胶支座的热力学分析
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摘要
利用ANSYS有限元软件对高温下圆形和矩形叠层橡胶支座的热应力进行了分析,通过对不同温度下叠层橡胶支座位移和应力的对比,获得了叠层橡胶支座位移和热应力的分布规律。分析结果表明,圆形叠层橡胶支座随着温度的提高,位移和热应力增大且成环形分布,由于温度荷载与内聚力同时作用,最大等效应力明显增大出现在中间部位;矩形叠层橡胶支座边缘受热不均匀导致边缘部位位移和等效应力不同,而在内部受热逐渐均匀,位移和等效应力相同。
The thermal stress of laminated rubber bear under high temperature is analyzed by finite element analysis software ANSYS,by comparing the displacement and thermal stress of circle and rectangle laminated rubber bearing under different temperature,it is obtained variable rule of thermal stress and is gotted the distributing circumstance of the displacement and thermal stress.Analyse results showed that,with the increasing of the temperature,the displacement and thermal stress of circle laminated rubber bearing,which is be ring distribution,is be enlarge,as is acting on the temperature and cohesion force,the max equivalent stress is significant increases and appear the intermediate section;the marginal area of rectangle laminated rubber bearing is heating non-uniform lead to the different of displacement and equivalent stress and the inside is heating uniform lead to the equality.
The thermal stress of laminated rubber bear under high temperature is analyzed by finite element analysis software ANSYS,by comparing the displacement and thermal stress of circle and rectangle laminated rubber bearing under different temperature,it is obtained variable rule of thermal stress and is gotted the distributing circumstance of the displacement and thermal stress.Analyse results showed that,with the increasing of the temperature,the displacement and thermal stress of circle laminated rubber bearing,which is be ring distribution,is be enlarge,as is acting on the temperature and cohesion force,the max equivalent stress is significant increases and appear the intermediate section;the marginal area of rectangle laminated rubber bearing is heating non-uniform lead to the different of displacement and equivalent stress and the inside is heating uniform lead to the equality.
引文
[1]周锡元,阎维明,杨润林.建筑结构的隔震、减振和振动控制[J].建筑结构学报,2002,23(2).
[2]CECS 126∶2001叠层橡胶支座隔震技术规程[S].
[3]党育,杜永锋,李慧.基础隔震结构设计及施工指南[M].北京:中国水利水电出版社和知识产权出版社,2007.
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[5]李慧,邓学晶,等.寒区叠层橡胶隔震支座的拟静力试验研究[J].低温建筑技术,2003(4):33-35.
[6]孔祥谦.有限单元法在传热学中的应用[M].北京:科学出版社,1998.
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[8]张朝晖,范群波,等.ANSYS8.0热分析教程与实例解析[M].北京:中国铁道出版社,2005.
[9]江宜城,聂肃非,等.多铅芯橡胶隔震支座非线性力学性能试验研究及其显示有限元分析[J].工程力学,2008,25(7):11-17.
[10]日本建筑学会.隔震结构设计[M].刘文光,译.北京:地震出版社,2006.
[2]CECS 126∶2001叠层橡胶支座隔震技术规程[S].
[3]党育,杜永锋,李慧.基础隔震结构设计及施工指南[M].北京:中国水利水电出版社和知识产权出版社,2007.
[4]李慧,杜永锋,等.叠层橡胶隔震支座的低温往复试验及等效阻尼比推算[J].兰州理工大学学报,2006,32(5):116-119.
[5]李慧,邓学晶,等.寒区叠层橡胶隔震支座的拟静力试验研究[J].低温建筑技术,2003(4):33-35.
[6]孔祥谦.有限单元法在传热学中的应用[M].北京:科学出版社,1998.
[7]郑永乾,杨有福,韩林海.用ANSYS分析钢—混凝土组合柱的温度场[J].工业建筑,2006,36(8):74-77.
[8]张朝晖,范群波,等.ANSYS8.0热分析教程与实例解析[M].北京:中国铁道出版社,2005.
[9]江宜城,聂肃非,等.多铅芯橡胶隔震支座非线性力学性能试验研究及其显示有限元分析[J].工程力学,2008,25(7):11-17.
[10]日本建筑学会.隔震结构设计[M].刘文光,译.北京:地震出版社,2006.
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