轻轨U形梁支座静载及疲劳特性研究
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摘要
利用设计的静载及疲劳试验系统,以某型橡胶抗震盆式支座为试验对象进行50万次疲劳加载循环试验及静载试验,对支座在不同疲劳加载循环次数下的竖向压缩变形、盆环径向变形、支座摩擦系数、支座竖向刚度等特征参数以及试验系统各部分温度进行测试,以确定支座的静载特性及疲劳特性。试验测试结果表明,该型抗震支座在经历50万次疲劳加载循环后各项特征参数均满足规范要求,且具有良好的静载力学特性及疲劳特性。试验过程中系统运行正常,未见异常升温及噪声异响。
By using a test system designed for static load and fatigue load experiments,the characteristic parameters of a certain type of pot rubber bearing,such as vertical compression deformation,circular and radial deformation of the pot,friction factor of bearing,vertical rigidity,as well as the temperature of every part of the system are tested under different cycle-index of fatigue load.Based on the tests,static load properties and fatigue properties of this type of seismic bearing are studied.After 500,000 times of fatigue load cycles,the tests show that these properties of the bearing can meet the requirements of the standards,and that this type of bearing has some advantages in static mechanical property as well as fatigue property.In the experiment process,this system operated normally and no abnormal temperature rise was detected,nor the abnormal sound.
By using a test system designed for static load and fatigue load experiments,the characteristic parameters of a certain type of pot rubber bearing,such as vertical compression deformation,circular and radial deformation of the pot,friction factor of bearing,vertical rigidity,as well as the temperature of every part of the system are tested under different cycle-index of fatigue load.Based on the tests,static load properties and fatigue properties of this type of seismic bearing are studied.After 500,000 times of fatigue load cycles,the tests show that these properties of the bearing can meet the requirements of the standards,and that this type of bearing has some advantages in static mechanical property as well as fatigue property.In the experiment process,this system operated normally and no abnormal temperature rise was detected,nor the abnormal sound.
引文
[1]江宜城,叶志雄,聂肃非,等.方形铅芯橡胶支座力学性能试验研究及隔震桥梁地震响应分析[J].公路交通科技,2007,24(10):94-98.
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[5]袁涌,朱昆,熊世树,等.高阻尼橡胶隔震支座的力学性能及隔震效果研究[J].工程抗震与加固改造,2008,30(3):18-23.
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[7]林佳,刘文光,等.橡胶隔震支座疲劳试验研究[J].广州大学学报(自然科学版),2005,4(3):258-260.
[8]黄跃平,周明华,胥明.影响我国公路桥梁板式橡胶支座质量的因素及应对措施[J].中国橡胶2006,22(18):37-40.
[9]陈云信.铅芯橡胶支座的研究现状与展望[J].现代机械,2005(6):82-83,87.
[10]江海波,廖蜀樵.铅芯橡胶支座隔震效果分析[J].学术专论,2005(3):35-38.
[2]徐慧莹,步启军,韩强.铅芯橡胶支座桥梁隔震试验研究现状及展望[J].路基工程,2007,(1):3-5.
[3]范立础,袁万城.桥梁橡胶支座减、隔震性能研究[J].同济大学学报(自然科学版),1989,17(4):447-454.
[4]赵士良.铅芯橡胶支座在桥梁隔震中的应用研究[J].山东交通科技,2006(3):27-28.
[5]袁涌,朱昆,熊世树,等.高阻尼橡胶隔震支座的力学性能及隔震效果研究[J].工程抗震与加固改造,2008,30(3):18-23.
[6]李亮.铅芯橡胶支座对连续箱梁结构抗震性能的影响[J].工程与建设,2008(3):65-67.
[7]林佳,刘文光,等.橡胶隔震支座疲劳试验研究[J].广州大学学报(自然科学版),2005,4(3):258-260.
[8]黄跃平,周明华,胥明.影响我国公路桥梁板式橡胶支座质量的因素及应对措施[J].中国橡胶2006,22(18):37-40.
[9]陈云信.铅芯橡胶支座的研究现状与展望[J].现代机械,2005(6):82-83,87.
[10]江海波,廖蜀樵.铅芯橡胶支座隔震效果分析[J].学术专论,2005(3):35-38.
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