液体粘滞阻尼器在梁桥抗震中的应用
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摘要
以某公路桥主桥三跨预应力混凝土悬臂梁为工程背景,利用有限元软件Midas/civil建立空间有限元模型.采用非线性时程分析方法计算设置粘滞阻尼器前后顺桥向节点位移、墩底弯矩、墩顶剪力的变化,从而评价粘滞阻尼器对提升桥梁抗震性能的作用.结果表明,合理设置液体粘滞阻尼器可以有效地减小桥梁位移和墩顶剪力,改善桥梁的抗震性能.
To a main road bridge three spans prestressed concrete cantilever beam as the engineering background,using the finite element software Midas / civil space finite element model is established. Set is obtained by using the nonlinear time history analysis method before and after the viscous dampers along the bridge to the node displacement and the change of the pier bottom bending and pier top shear force,so as to evaluate viscous dampers to improve seismic performance of bridges. The results show that the reasonable setting of fluid viscous damper can effectively reduce the bridge displacement and shear force loaded on top,to improve the seismic performance of the bridge.
To a main road bridge three spans prestressed concrete cantilever beam as the engineering background,using the finite element software Midas / civil space finite element model is established. Set is obtained by using the nonlinear time history analysis method before and after the viscous dampers along the bridge to the node displacement and the change of the pier bottom bending and pier top shear force,so as to evaluate viscous dampers to improve seismic performance of bridges. The results show that the reasonable setting of fluid viscous damper can effectively reduce the bridge displacement and shear force loaded on top,to improve the seismic performance of the bridge.
引文
[1]陈永祁.桥梁工程液体黏滞阻尼器设计与施工[M].北京:中国铁道出版社,2012.
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[3]周云.粘滞阻尼减震结构设计[M].武汉:武汉理工大学出版社,2006.
[4]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[5]苏晓芸.基于MIDAS设置阻尼器的刚框架地震时程分析[J].河北工程大学学报(自然科学版),2013,(2):28-32.
[6]许文俊,王会利,苗峰.粘滞阻尼器在连续梁桥抗震设计中的应用[J].山东交通学院学报,2011,(3):48-52.
[7]宋子威,蔡小培.粘滞性阻尼器在高速铁路长联大跨连续梁中的应用[J].清华大学学报(自然科学版),2012,(8):1102-1105.
[2]滕军.结构振动控制的理论、技术和方法[M].北京:科学出版社,2009.
[3]周云.粘滞阻尼减震结构设计[M].武汉:武汉理工大学出版社,2006.
[4]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[5]苏晓芸.基于MIDAS设置阻尼器的刚框架地震时程分析[J].河北工程大学学报(自然科学版),2013,(2):28-32.
[6]许文俊,王会利,苗峰.粘滞阻尼器在连续梁桥抗震设计中的应用[J].山东交通学院学报,2011,(3):48-52.
[7]宋子威,蔡小培.粘滞性阻尼器在高速铁路长联大跨连续梁中的应用[J].清华大学学报(自然科学版),2012,(8):1102-1105.
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