Lock-up装置在连续梁桥中应用的优化研究

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英文篇名：Optimization Research on the Application of Lock-up Device in Continuous Beam Bridge 中文刊名：现代交通技术 英文刊名：Modern Transportation Technology 作者：胡国民 ; 王聪 英文作者：Hu Guomin ; Wang Cong ; Ningbo Highway Design Co. ; Ltd. 中文关键词：桥梁工程 ; Lock-up装置 ; 时程分析 ; 桥梁抗震 ; 锁止速度 英文关键词：bridge engineering ; Lock-up device ; time history analysis ; anti-seismic bridges ; locking speed 出版日期：2015-02-26 机构：宁波公路市政设计有限公司; 年：2015 期：01 出版单位：现代交通技术

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.

引文

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