连续梁桥纵桥向缆索限位装置参数分析  

Parameter Analysis on Longitudinal Cable Restrainer for Continuous Bridge

作　　者：罗征[1] 李建中[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《石家庄铁道大学学报（自然科学版）》2010年第2期74-80,共7页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：国家自然科学基金(90815007)

摘　　要：目前国内所采用的缆索限位装置一般是作为构造措施,没有经过计算和设计,在地震作用下限位装置很难起到真正的防落梁效果。通过非线性时程方法对缆索限位装置进行了参数研究分析了不同周期比、限位装置刚度与缆索的松弛量对两联连续梁桥响应的影响,结果表明,连续梁桥采用缆索限位装置模式能有效的减小连续梁与过渡墩的相对位移反应。Domestic cable restrainer prevention system without design is usually adopted as construction measures, which can＇ t ascertain the effect of unseating prevention system. Cable restrainer prevention system for the continuous girder bridges is compared by nonlinear time-history method. Different period ratio, restrainer stiffness and relaxation of two continuous-beam bridge are considered for the modes of unseating prevention system. The results shows that continuous beam bridge with cable restrainers model can effectively reduce relative displacement between girder and pier for the continuous bridges .

关 键 词：连续梁 缆索位装置 落梁 参数分析 

分 类 号：U448[建筑科学—桥梁与隧道工程]