摘要
以连续梁桥为例,对铅芯橡胶支座和液体粘滞阻尼器共同使用的情况进行了分析,研究了二者合理组合方式及其对桥梁抗震性能的影响。分析发现:合理共用两种减隔震装置,比单独使用其中一种减隔震装置,可进一步提高桥梁的抗震性能;然而,如果两种减隔震装置设置不当,则有可能增大桥梁构件的地震响应;结合静力设计,将两种减隔震装置分设不同位置时,即将液体粘滞阻尼器设置在边墩处,将铅芯橡胶支座设置在其余墩处,可较大限度地提高桥梁的抗震性能。
With continuous beam bridge as an example,coupling analysis of lead rubber bearing and liquid viscous damper is carried out to obtain the reasonable combination type of the two and the affect of bridge seismic performance.The results show that bridge seismic performance could be further promoted by reasonably using the two seismic isolation devices together,comparing to individually using either of them;however,seismic response of bridge components might be increased if the combination of two seismic isolation devices is unsuitable;considering static design,bridge seismic performance could be dramatically promoted by arraying two seismic isolation devices in different places,that is,liquid viscous damper is set on the top of side piers and lead rubber bearing is set on the top of other piers.
出处
《工程抗震与加固改造》
北大核心
2012年第6期69-73,79,共6页
Earthquake Resistant Engineering and Retrofitting
关键词
连续梁桥
抗震性能
减隔震装置
铅芯橡胶支座
液体粘滞阻尼器
continuous beam bridge
seismic performance
seismic isolation devices
lead rubber bearing
liquid viscous damper
