速度锁定器理论模型及铁路桥梁抗震适用性分析-《高速铁路技术》

文章信息/Info

Title:: Theoretical Model of Lock-up Device and Applicability Analysis of Seismic Design of Railway Bridge

作者:: 秦煜; 杨超华; 吴多; 肖金辉; 王威娜; 1. 重庆交通大学, 重庆 400074;
2. 中铁二院工程集团有限责任公司, 成都 610031;
3. 长安大学, 西安 710064

Author(s):: QIN Yu; YANG Chaohua; WU Duo; XIAO Jinhui; WANG Weina; 1. Chongqing Jiaotong University, Chongqing 400074, China;
2. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China;
3. Chang’an University, Xi’an 710064, China

Keywords:: lock-up device|working principle|mechanical model|rigid connecting rod|Maxwell model

摘要:: 为更好开展速度锁定器桥梁抗震设计，本文针对速度锁定器产品众多且原理性能各异的现状，通过分析其理论模型和数值模拟方法，对其进行分类并讨论其工作机理，研究速度锁定器的铁路桥梁抗震适用范围、对结构的影响和应用方式等。研究结果表明：（1）速度锁定器可分为胶泥弹簧、机械控制流量阀门、胶泥小孔限流、硅油小孔限流等四类；（2）速度锁定器的本质是仅与速度相关且不耗能的临时锁，固结多个构件使之共同承力，可采用刚性连杆或Maxwell模型进行数值模拟；（3）速度锁定器不适用于需要耗能以减小震害的桥梁；（4）速度锁定器临时锁定构件增大了整体刚度，导致输入全桥的总地震效应增大。

Abstract:: In view of the current situation that lock-up device products are numerous and the mechanics and performance are different, in order to serve seismic design better, by analyzing the theoretical model and numerical simulation, this thesis classifies the lock-up devices and discusses their working mechanism and study the range of seismic application of lock-up device in railway bridge, affect to the structure and application way. The results of the study show that:lock-up device can be divided into four types:glue-mud spring, mechanical control flow valve, pore limiting of flow of glue-mud and limited flow of silicon oil. The nature of lock-up device is that it is only related to speed and it could seem as a temporary lock that doesn’t consume the energy, solidifying multiple components of bridge together to bear the external load, could be numerical simulated by using rigid connecting rod or Maxwell model. The lock-up device is not suitable for seismic bridge that needs consuming the energy. The temporary locking component of lock-up device increases the overall stiffness and in this way the total seismic effect input into the total bridge increases.

备注/Memo:: 作者简介：秦煜（1983-），男，高级工程师，工学博士（后）。基金项目：国家自然科学基金项目（51408083，51508064）；重庆市社会事业与民生保障科技创新专项（cstc2016shmszx30014）；重庆市前沿与应用基础研究计划项目（cstc2016jcyjA0128）；宁夏自治区高等学校科研项目优秀青年基金（NGY2017005）引文格式：秦煜, 杨超华, 吴多, 等. 速度锁定器理论模型及铁路桥梁抗震适用性分析[J]. 高速铁路技术,2018,9(2):5-8.QIN Yu, YANG Chaohua, WU Duo, et al. Theoretical Model of Lock-up Device and Applicability Analysis of Seismic Design of Railway Bridge[J]. High Speed Railway Technology, 2018, 9(2):5-8.