地震作用下西部地区连续梁桥的落梁研究  

Study on girder falling of continuous beam bridges under earthquake in western region

作　　者：张勇[1] 刘昌清 顾庆 

机构地区：[1]中交第二公路勘察设计研究院有限公司 [2]荆州市恒通公路桥梁有限责任公司 [3]荆州市交通基本建设工程质量监督站

出　　处：《山西建筑》2010年第16期281-282,共2页Shanxi Architecture

摘　　要：以西部地区某连续梁桥为例,分析了E1,E2两个设计水准地震作用下连梁装置的抗震性能。研究发现,通过在连续梁梁端设置连梁装置,可以显著降低梁端相对位移,有效减小结构关键截面的地震内力,建议在高烈度区采用连梁装置,以提高连续梁桥的抗震性能。Based on a continuous beam bridge in western region,seismic performance of unseating prevention devices was studied under seismic level E1 and E2.It was found relative displacement and seismic force of key section of structure could be effectively reduced by installing unseating prevention devices.It was suggested the unseating prevention devices should be used in the highly seismic region to improve seismic performance of continuous beam bridges.

关 键 词：连续梁桥 落梁 连梁装置 抗震性能 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]