考虑流固耦合的深水大跨波形钢腹板PC连续刚构桥地震响应性能研究  

Seismic Response of PC Continuous Rigid Frame Bridge with Long Span Corrugated Steel Webs Considering Fluid-Structure Coupling

作　　者：马安财 张世海[1] 付清华[1] 孙洪波 武彦芳 高彦滢 MA An-cai;ZHANG Shi-hai;FU Qing-hua;SUN Hong-bo;WU Yan-fang;GAO Yan-ying(Gansu Vocational and Technical Collage ofCommunications,Lanzhou 730207,China;China International Engineering Consulting Corporation,Beijing 100048,China;Pingliang Highway Development Center ofGansu Province,Pingliang 744000,China)

机构地区：[1]甘肃交通职业技术学院,兰州730207 [2]中国国际工程咨询有限公司,北京100048 [3]甘肃省平凉公路事业发展中心,甘肃平凉744000

出　　处：《工程建设与设计》2023年第16期51-53,共3页Construction & Design for Engineering

基　　金：甘肃省教育厅青年博士基金项目(2022QB-210);2022年度甘肃交通职业技术学院院级科研课题(2022Y-01)。

摘　　要：以一座在建大跨度波形钢腹板连续刚构桥为例,采用Morison方程求得附加质量,建立了考虑动水压力作用的桥梁动力分析有限元模型,分析研究了动水压力作用对桥梁地震响应性能的影响。研究表明:动水压力的考虑改变了桥梁结构的动力特性,考虑动水压力作用时,结构动力响应整体增大,因此,在大跨度深水桥梁的地震反应分析中动水压力的影响不可忽略。Taking a long-span continuous rigid frame bridge with corrugated steel webs under construction as an example,the Morison equation is used to calculate the additional mass,and the finite element model for dynamic analysis of the bridge considering the action of hydrodynamic pressure is established.The effect of hydrodynamic pressure on seismic response of bridges is analyzed and studied.The results show that the consideration of hydrodynamic pressure changes the dynamic characteristics of bridge structure.When considering the effect of hydrodynamic pressure,the structural dynamic response increases as a whole.Therefore,the influence of hydrodynamic pressure cannot be ignored in the seismic response analysis oflong-span deep-water Bridges.

关 键 词：波形钢腹板PC连续梁桥 流固耦合 动水压力 地震响应性能 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]