减震榫与榫形防落梁装置应用于高速铁路简支梁桥的简化计算方法
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摘要
针对应用最为广泛的铁路简支箱梁桥,结合铁路桥梁的抗震设防特点,研发了两种适用于铁路桥梁的新型减隔震装置—减震榫与榫形防落梁。对这两种装置进行长期深入的理论与试验研究,并且将装置在铁路桥上进行少量的工程应用,为装置的大量推广使用奠定了坚实的理论与实践基础。为规范减震榫与榫形防落梁装置的使用,利于装置的推广应用,对两种装置从构造到简化计算方法依次进行详细介绍。首先简要介绍装置的构造、作用机理及力学特性;然后采用非线性反应谱分析方法,对装置应用于铁路简支梁桥抗震设计的简化计算流程及公式进行详述;为加深工程技术人员对简化计算方法的理解与采用,给出了工程算例;由于计算过程涉及到反复迭代计算,为减少计算工作量,开发了计算分析的小程序。
Aiming at the most widely used railway simply supported box beam bridge, new type of seismic isolation devices-steel bar restrainer and steel bar damper are developed according to seismic fortification characteristics of railway bridges. Long-term in-depth theoretical and experimental researches on these two devices have been carried out, and a small amount of engineering applications have been made in the railway bridge, which has laid a solid theoretical and practical foundation for the use of the device. In order to standardize the use and facilitate the popularization and application of the devices. The two devices are described in detail from the structure to the simplified calculation method. The structure, mechanism and mechanical properties of the devices are briefly introduced at first. Then the nonlinear response spectrum analysis method is applied in the seismic design of the railway simply supported bridge. The simplified calculation process and formula are introduced specifically. In order to deepen the understanding and adoption of the simplified calculation method by engineering and technical personnel, engineering examples are provided. Because the calculation process involves repeated iterative calculation, a calculation analysis program is developed to reduce the calculation workload.
Aiming at the most widely used railway simply supported box beam bridge, new type of seismic isolation devices-steel bar restrainer and steel bar damper are developed according to seismic fortification characteristics of railway bridges. Long-term in-depth theoretical and experimental researches on these two devices have been carried out, and a small amount of engineering applications have been made in the railway bridge, which has laid a solid theoretical and practical foundation for the use of the device. In order to standardize the use and facilitate the popularization and application of the devices. The two devices are described in detail from the structure to the simplified calculation method. The structure, mechanism and mechanical properties of the devices are briefly introduced at first. Then the nonlinear response spectrum analysis method is applied in the seismic design of the railway simply supported bridge. The simplified calculation process and formula are introduced specifically. In order to deepen the understanding and adoption of the simplified calculation method by engineering and technical personnel, engineering examples are provided. Because the calculation process involves repeated iterative calculation, a calculation analysis program is developed to reduce the calculation workload.
引文
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[8] 周友权.液体粘滞阻尼器与双曲面球形减隔震支座联合应用研究[J].铁道标准设计,2017,61(6):82-87.
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[12] 李爱丽,高日.减震榫-活动支座应用于高铁桥梁的减震性能研究[J].桥梁建设,2018(1):54-59.
[13] 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.
[14] 孟兮,倪燕平.减震榫设计及试验研究[J].北京交通大学学报,2013(3):103-106.
[15] 孟兮,高日,李承根.减震榫滞回性能理论及试验研究[J].桥梁建设,2015(3):20-25.
[16] 卢皓.罕遇地震作用下高速铁路减隔震简支梁桥合理计算模型的探讨[J].铁道标准设计,2016,60(6):48-54.
[17] 李爱丽,高日,李承根,等.一种新型软钢减震榫的设计与试验研究[J].桥梁建设,2017(1):23-28.
[18] 冯亚成.减震榫在宝兰客专48 m简支梁桥中的设计应用[J].铁道工程学报,2017(12):57-62.
[19] 中华人民共和国住房和建设部.铁路工程抗震设计规范(2009年版):GB 50111—2006[S].北京:中国计划出版社,2009.
[20] 中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.
[2] 周友权.粘滞阻尼器在金水沟特大桥中的应用研究[J].铁道标准设计,2012(2):66-69.
[3] 郭晶.粘滞阻尼器在铁路斜拉桥中的应用及减振性能研究[D].成都:西南交通大学,2012.
[4] 逯久喜,逯宗典,王琦,等.摩擦摆式抗震支座在大跨铁路桥梁中的应用[J].国防交通工程与技术,2012(4):75-77.
[5] 夏修身,赵会东,欧阳辉来.高速铁路桥梁基于摩擦摆支座的减隔震研究[J].工程抗震与加固改造,2014(6):21-26.
[6] 李冰,王少华,邓斌.摩擦摆支座在高速铁路桥梁中的隔震性能研究[J].机械科学与技术,2015(3):339-343.
[7] 赵继栋,张永亮,陈兴冲,等.基于粘滞阻尼器的高墩大跨铁路连续刚构桥减震研究[J].世界地震工程,2016(2):93-99.
[8] 周友权.液体粘滞阻尼器与双曲面球形减隔震支座联合应用研究[J].铁道标准设计,2017,61(6):82-87.
[9] 陈令坤,蒋丽忠,王丽萍,等.高速铁路铅芯橡胶支座桥梁隔震研究[J].华中科技大学学报(自然科学版),2012(1):77-81.
[10] 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(1):81-86.
[11] 孟兮,高日,李承根.铁路简支梁桥中减震榫的设计及其减震性能研究[J].桥梁建设,2014(3):81-86.
[12] 李爱丽,高日.减震榫-活动支座应用于高铁桥梁的减震性能研究[J].桥梁建设,2018(1):54-59.
[13] 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.
[14] 孟兮,倪燕平.减震榫设计及试验研究[J].北京交通大学学报,2013(3):103-106.
[15] 孟兮,高日,李承根.减震榫滞回性能理论及试验研究[J].桥梁建设,2015(3):20-25.
[16] 卢皓.罕遇地震作用下高速铁路减隔震简支梁桥合理计算模型的探讨[J].铁道标准设计,2016,60(6):48-54.
[17] 李爱丽,高日,李承根,等.一种新型软钢减震榫的设计与试验研究[J].桥梁建设,2017(1):23-28.
[18] 冯亚成.减震榫在宝兰客专48 m简支梁桥中的设计应用[J].铁道工程学报,2017(12):57-62.
[19] 中华人民共和国住房和建设部.铁路工程抗震设计规范(2009年版):GB 50111—2006[S].北京:中国计划出版社,2009.
[20] 中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.