哈尔滨工程大学学报2025，Vol.46Issue(4)：720-726,7.DOI:10.11990/jheu.202303045
高墩大跨连续刚构桥地震损伤及控制措施分析
Study on seismic damage and control measures of the long-span continuous rigid frame bridge with high piers
摘要
Abstract
This study focuses on the seismic performance of a high-pier long-span continuous rigid-frame bridge as the engineering background.Taking into account the influence of the construction process on the internal forces of the completed bridge under permanent loads,the Incremental Dynamic Analysis(IDA)method was employed to investi-gate the effects of prestressed tendon stress variations and dynamic axial forces on the seismic damage of the main girder and piers under earthquake action.Additionally,the control effect of replacing concrete webs with corrugated steel webs on the seismic damage of the continuous rigid-frame bridge was analyzed.Measures such as optimizing the cross-sectional dimensions of the piers,applying local prestressed to the main piers,and installing cross beams be-tween double-column piers were proposed to mitigate the seismic damage of the main piers.The results show that the stress variations in prestressed tendons have a minor effect on the concrete stress of the main girder under seismic ac-tion.When dynamic axial forces are considered,the pier top and bottom crack at peak ground accelerations(PGA)of 0.4g and 0.6g,respectively,with the pier top being more susceptible to damage.Corrugated steel webs can im-prove the seismic capacity of the main girder but reduce the seismic performance of the piers.The proposed meas-ures,including optimizing the cross section of piers,applying local prestress to main piers and setting link beams be-tween the double-column piers could enhance effectively the seismic performance of main piers.关键词
连续刚构桥/增量动力分析/地震损伤/控制措施/抗震性能/峰值地面加速度Key words
continuous rigid frame bridge/incremental dynamic analysis/seismic damage/control measures/seis-mic performance/peak ground accelerations分类
交通运输引用本文复制引用
王军文,刘彦伟,张钊,李春雨,李勇,郭进..高墩大跨连续刚构桥地震损伤及控制措施分析[J].哈尔滨工程大学学报,2025,46(4):720-726,7.基金项目
国家自然科学基金项目(52178493) （52178493）
河北省自然科学基金项目(E2019210215,E2020210017,E2021210096) （E2019210215,E2020210017,E2021210096）
河北省高等学校科学技术研究项目(ZD2019124) （ZD2019124）
河北省科技厅重点研发计划(21375403D,21375402D). （21375403D,21375402D）
