低屈服点钢阻尼器在高速铁路简支梁桥中的应用研究
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摘要
高速铁路简支梁桥应用低屈服点钢阻尼器,可以大幅度提高结构的抗震性能。选择三种墩高的典型高速铁路简支梁桥为研究对象,进行了罕遇地震下设置减震榫时的非线性时程反应分析及不设置减震榫时的线性时程反应分析。研究结果表明,减震榫有优异的减震性能,应用该装置可以大幅提高桥梁的抗震性能,解决了我国高速铁路桥梁刚度大,配筋率低,难以出现塑性铰的技术难题。
The application of low yield point steel damper can largely improve the anti-seismic performance of the simply supported bridge on high speed railway.To testify this point,the paper chose three typical simply supported bridges of different piers' heights as the objects of study and analyzed respectively,in rarely-occurred earthquakes,its nonlinear and linear time history responses with and without steel tenon absorber.The results show that tenon absorber has remarkable anti-seismic performance;therefore the application of this device can largely improve the earthquake resistance behavior of bridges and solve the technical difficulties that exist in the HSR bridges of China,like high stiffness,low reinforcement ratio and rare occurrence of plastic hinge.
The application of low yield point steel damper can largely improve the anti-seismic performance of the simply supported bridge on high speed railway.To testify this point,the paper chose three typical simply supported bridges of different piers' heights as the objects of study and analyzed respectively,in rarely-occurred earthquakes,its nonlinear and linear time history responses with and without steel tenon absorber.The results show that tenon absorber has remarkable anti-seismic performance;therefore the application of this device can largely improve the earthquake resistance behavior of bridges and solve the technical difficulties that exist in the HSR bridges of China,like high stiffness,low reinforcement ratio and rare occurrence of plastic hinge.
引文
[1]中华人民共和国铁道部.GB50111—2009铁路工程抗震设计规范[S].北京:中国计划出版社,2009.
[2]李承根,高日.高速铁路桥梁减震技术研究[J].中国工程科学,2009(11):81-86.
[3]陈浩,高日,李承根,等.减震榫减震性能试验研究[J].低温建筑技术,2010(10):28-30.
[4]王威,吕西林,徐崇恩.低屈服点钢在结构振动与控制中的应用研究[J].结构工程师,2007(6):83-88.
[5]中国铁道建筑总公司.高烈度地震区桥梁采用减隔震技术的设计和应用研究[R].北京:中国铁道建筑总公司,2010.
[6]姜鹏,喻其炳,李川,等.高架桥支座安装双端质量减振元件的轨道减振性能分析[J].铁道建筑,2012(8):18-21.
[2]李承根,高日.高速铁路桥梁减震技术研究[J].中国工程科学,2009(11):81-86.
[3]陈浩,高日,李承根,等.减震榫减震性能试验研究[J].低温建筑技术,2010(10):28-30.
[4]王威,吕西林,徐崇恩.低屈服点钢在结构振动与控制中的应用研究[J].结构工程师,2007(6):83-88.
[5]中国铁道建筑总公司.高烈度地震区桥梁采用减隔震技术的设计和应用研究[R].北京:中国铁道建筑总公司,2010.
[6]姜鹏,喻其炳,李川,等.高架桥支座安装双端质量减振元件的轨道减振性能分析[J].铁道建筑,2012(8):18-21.