黄土地区高墩深水桥梁地震响应分析  

Seismic Response Analysis of Deep-water Bridges with High Pier in Loess Areas

作　　者：吴琼 李薇 WU Qiong;LI Wei(Shanxi Province Communications Planning Surveying and Designing Institute Co.Ltd.,Taiyuan 030032,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,太原市030032

出　　处：《公路》2025年第1期210-215,共6页Highway

摘　　要：深水桥梁在地震作用下,除了受到地震惯性力作用,还会受到地震动水压力作用,导致桥梁地震动力响应发生改变。以某黄土地区高墩连续刚构深水桥梁为例,对其在不同水深下受到的地震作用时的动力响应进行了分析。结果表明考虑地震诱发的地震动水压力后,桥梁结构在不同水深下最大动力响应相比于无水环境下均有所增加,但并非水位越高其动力响应增长幅度就越大;桥梁动水力计算时,应当考虑在不同水深下桥梁的地震动力响应,以确定最不利动力响应,进而分析其抗震能力。本研究可为深水桥梁抗震分析以及结构设计提供参考。Deep-water bridges,when subjected to seismic forces,experience changes in their dynamic responses not only due to seismic inertial forces but also due to the hydrodynamic pressure induced by earthquake activity.Relying on a high-pier,continuous rigid-frame bridge in a loess region,the dynamic response during earthquakes under various water depths are analyzed.The results show that,considering the water pressure induced by earthquake,the maximum dynamic response of bridge structures under different water depths increases compared with that under no water environment,but the increase of dynamic response does not increase as the water level increases.The seismic dynamic response of the bridge under different water depths should be considered in the dynamic hydraulic calculation to determine the most unfavorable dynamic response and analyze its seismic resistance.This study can provide reference for the seismic assessment and structural design of deep-water bridges.

关 键 词：桥梁工程 黄土地区 高墩连续刚构桥 抗震作用 地震响应分析 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]