平板橡胶支座压剪共同作用时全过程分析
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摘要
为研究平板橡胶支座在大跨度桥梁结构中的工作性能,采用ANSYS有限元软件,建立4种平板橡胶支座模型,在压剪共同作用下,对平板橡胶支座的受力过程进行分析。分析中考虑大跨结构中产生的水平剪力对平板橡胶支座受力的影响,通过增加螺栓提高平板橡胶支座的水平刚度。分析表明:在大跨度桥梁结构中,平板橡胶支座受到较大水平剪力时的变形很大,最大应力出现在第1层钢板内;通过增加螺栓可有效地减小橡胶支座产生的水平位移,提高其水平承载力。
To study the working performance of rubber plate bearing used in long span bridge structure,4 types of models for the bearing were established by the finite element software ANSYS and the whole process of force conditions of the bearing subjected to the joint action of compression and shear was analyzed.In the analysis,the influence of the horizontal shear produced in the long span structure on the force conditions of the bearing was taken into account and the horizontal rigidity of the bearing was improved by adding of bolts.The results of the analysis show that for the long span bridge structure,the deformation of the rubber plate bearing is great when it is subjected to great horizontal shear and the maximum stress will appear in the first layer of the steel plate.The adding of bolts can effectively reduce the horizontal displacement of the bearing and can improve the horizontal load bearing capacity of the bearing.
To study the working performance of rubber plate bearing used in long span bridge structure,4 types of models for the bearing were established by the finite element software ANSYS and the whole process of force conditions of the bearing subjected to the joint action of compression and shear was analyzed.In the analysis,the influence of the horizontal shear produced in the long span structure on the force conditions of the bearing was taken into account and the horizontal rigidity of the bearing was improved by adding of bolts.The results of the analysis show that for the long span bridge structure,the deformation of the rubber plate bearing is great when it is subjected to great horizontal shear and the maximum stress will appear in the first layer of the steel plate.The adding of bolts can effectively reduce the horizontal displacement of the bearing and can improve the horizontal load bearing capacity of the bearing.
引文
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[8]王秀丽,玛索菲亚.大跨网壳结构板式橡胶支座抗刚度分析[J].甘肃科学学报,2009,21(3):131-135.(WNAG Xiu-li,MA Sophia.Stiffness Analysis of RubberPlate-Support on Large-Span Latticed Shell Structure[J].Journal of Gansu Sciences,2009,21(3):131-135.in Chi-nese)
[9]魏红一,许歆,胡世德.圆板式橡胶支座的性能评价[J].公路,2005,(2):48-49.(WEI Hong-yi,XU Xin,HU Shi-de.Evaluation of Perform-ance of Circular Plate-Type Rubber Bearings[J].Highway,2005,(2):48-49.in Chinese)
[10]郑明军,王文静,陈政南,等.橡胶Mooney-Rivlin模型力学性能常数的确定[J].橡胶工业,2003,50(8):462-465.(ZHENG Ming-jun,WANG Wen-jing,CHEN Zheng-nan,etal.Determination of Constants for Mechanical Behavior ofMooney-Rivlin Model for Rubber[J].2003,50(8):462-465.in Chinese)
[2]周明华,葛宝翔.公路桥梁橡胶支座的使用寿命与应用对策[J].土木工程学报,2005,38(6):92-96.(ZHOU Ming-hua,GE Bao-xiang.On the Service Lifetime ofRubber Bearing and Countermeasures of Application for High-way Bridges[J].China Civil Engineering Journal,2005,38(6):92-96.in Chinese)
[3]程桂胜.桥梁天然橡胶支座老化特性的预测[J].世界桥梁,2010,(1):63-65.(CHENG Gui-sheng.Prediction of Aging Characteristics inNatural Rubber Bearings Used in Bridges[J].Translated.World Bridges,2010,(1):63-65.in Chinese)
[4]黄跃平,周明华,胥明.影响板式橡胶支座耐久性的因素与对策[J].现代交通技术,2006,3(4):15-19.(HUANG Yue-ping,ZHOU Ming-hua,XU Ming.InfluenceFactors and Countermeasure for Plate Type Elastomeric PadBearings Durability of Highway Bridges[J].Modern Trans-portation Technology,2006,3(4):15-19.in Chinese)
[5]刘岳兵,王少华,王宏谋,等.基于ANSYS分析的盆式橡胶支座结构及性能研究[J].铁道建筑,2009,(10):1-3.(LIU Yue-bing,WANG Shao-hua,WANG Hong-mou,et al.Research of Structure and Performance of Pot Rubber BearingsBased on ANSYS Analysis[J].Railway Construction,2009,(10):1-3.in Chinese)
[6]王秀丽,何子奇.空间结构板式橡胶支座抗震性能研究(硕士学位论文)[D].兰州:兰州理工大学,2010.(WNAG Xiu-li,HE Zi-qi.Seismic Research of Rubber Plate-Support on Spatial Structure(Master Dissertation)[D].Lan-zhou:Lanzhou University of Technology,2010.in Chinese)
[7]王秀丽,李志利.螺栓对板式橡胶支座抗震性能影响分析[J].甘肃科学学报,2011,23(1):87-90.(WNAG Xiu-li,LI Zhi-li.The Effect of Bolts on the Aseis-matic Performance of Laminated Rubber Bearing[J].Journalof Gansu Sciences,2011,23(1):87-90.in Chinese)
[8]王秀丽,玛索菲亚.大跨网壳结构板式橡胶支座抗刚度分析[J].甘肃科学学报,2009,21(3):131-135.(WNAG Xiu-li,MA Sophia.Stiffness Analysis of RubberPlate-Support on Large-Span Latticed Shell Structure[J].Journal of Gansu Sciences,2009,21(3):131-135.in Chi-nese)
[9]魏红一,许歆,胡世德.圆板式橡胶支座的性能评价[J].公路,2005,(2):48-49.(WEI Hong-yi,XU Xin,HU Shi-de.Evaluation of Perform-ance of Circular Plate-Type Rubber Bearings[J].Highway,2005,(2):48-49.in Chinese)
[10]郑明军,王文静,陈政南,等.橡胶Mooney-Rivlin模型力学性能常数的确定[J].橡胶工业,2003,50(8):462-465.(ZHENG Ming-jun,WANG Wen-jing,CHEN Zheng-nan,etal.Determination of Constants for Mechanical Behavior ofMooney-Rivlin Model for Rubber[J].2003,50(8):462-465.in Chinese)
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