Lock-up装置在连续梁桥中应用的优化研究  

Optimization Research on the Application of Lock-up Device in Continuous Beam Bridge

作　　者：胡国民 王聪 

机构地区：[1]宁波公路市政设计有限公司,浙江宁波315100

出　　处：《现代交通技术》2015年第1期22-25,共4页Modern Transportation Technology

摘　　要：以某5跨连续梁桥为工程背景,对Lock-up装置的工作性能和机理进行了分析。采用非线性时程分析方法,对地震中Lock-up装置锁止速度和Lock-up装置的位置对桥梁减震的影响进行了分析,得到了Lock-up的最优锁止速度和该桥的最优减震方案。结果表明:对于多跨连续梁桥,Lock-up装置可以很好地提高桥梁的整体抗震性能;从经济和减震效果看并不是越多的Lock-up装置越好。Taking a 5 span continuous girder bridge as engineering backgroundg,work performance and mechanism of Lock-up device are analyzed.Using the nonlinear time history analysis method,locking speed of Lock-up device and damping effects of Lock-up device layout on continuous beam bridge in the earthquake are analyzed,and optimal damping scheme for the bridge are provide.The results show that the overall seismic performance of multi span continuous beam bridge is improvd by Lock-up device,while from the economic and the damping effect,the using of Lock-up device is not the more the better.

关 键 词：桥梁工程 LOCK-UP装置 时程分析 桥梁抗震 锁止速度 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]