铁道科学与工程学报2025，Vol.22Issue(7)：2859-2871,13.DOI:10.19713/j.cnki.43-1423/u.T20241523
含UCSD消能减震装置的高速铁路轨道-桥梁系统震后功能恢复函数
Post-earthquake functionality recovery function of high-speed railway track-bridge system with UCSD energy dissipation devices
摘要
Abstract
Quantifying the post-earthquake recovery function is the basis for achieving the seismic resilience of engineering structures.High speed railway is a lifeline project.However,the researches on high-speed railway track-bridge systems are scarce,which can limite the development of seismic resilience technology for this system.Based on the existing post-earthquake recovery model of bridges,the widely used high-speed railway CRTS II track-bridge system was selected to establish the refined seismic analysis numerical model.Based on the tests conducted by the research group on bridge piers,energy dissipation devices,and shaking table tests of track-bridge systems,a systematic experimental verification was carried out.The effects of track structure components such as CA mortar layer,sliding layer,fasteners,shear groove,shear rebar,and the energy dissipation devices on the post-earthquake functionality recovery model(PEFRM)were considered and analyzed.A calculation model and key variable parameter indicators for post-earthquake recovery function of high-speed railway track-bridge system was proposed.This research conducted numerical analyses on a typical 4-pier 5-span high-speed railway track-bridge system.The results are drawn as follows.(1)The sliding layer of the track structure has a significant impact on the post-earthquake recovery capacity of the system,even after the installation of energy dissipation devices.(2)The proposed energy dissipation devices can reduce the post-earthquake damages of the system,and significantly reduce the post-earthquake decision and repair time.(3)The damage of the piers is slightly amplified due to the proposed energy dissipation devices,and significantly decrease the damages of bearings and the risk of falling girder.The proposed PEFRM can consider the effects of track structure and energy dissipation devices,and post-earthquake functionality recovery ability of the system is comprehensively and reasonably calculated.Although the energy dissipation devices may reduce the post-earthquake functional recovery function of piers,they have improved the recovery function of high-speed railway track-bridge systems and the improvements are associated with the arrangements.The model and results serve for the seismic resilience assessment and design of high-speed railway track-bridge systems in China.关键词
轨道桥梁系统/震后功能恢复模型/高速铁路/消能减震装置/抗震韧性Key words
track-bridge system/post-earthquake recovery model/high-speed railway/energy dissipation devices/seismic resilience分类
交通工程引用本文复制引用
江力强,刘小志,蒋丽忠,庞林,卢皓,李侠..含UCSD消能减震装置的高速铁路轨道-桥梁系统震后功能恢复函数[J].铁道科学与工程学报,2025,22(7):2859-2871,13.基金项目
国家重点研发计划资助项目(2022YFC3004304) （2022YFC3004304）
国家自然科学基金资助项目(52378209) （52378209）
湖南省科技计划湖湘青年英才项目(2023RC3057) （2023RC3057）
湖南省科技人才资助计划小荷科技人才专项资金资助项目(2023TJ-X66) （2023TJ-X66）
