{"title":"Stochastic Seismic Responses of High-Speed Train–Bridge Systems with Ground Motion Correlation","authors":"Chunyan Ma, Dong-Ho Choi","doi":"10.1007/s13296-025-00936-w","DOIUrl":null,"url":null,"abstract":"<div><p>The increasing reliance on bridges in high-speed railway systems and the growing risk of earthquakes necessitate advanced seismic analyses of train–bridge interactions. This study addresses the dynamic behavior of a high-speed train and long-span cable-stayed bridge system under seismic ground motions, with a focus on the correlation effects among ground motion components in diverse directions. The analysis incorporates track irregularities, rigid wheel–rail contact, and a coupled equation of motion solved using the time integration method. Results reveal that correlated ground motions significantly influence the system’s stochastic responses, including estimated maximum accelerations of bridge spans and towers, wheel–rail contact forces, and offload factors. These findings underscore the importance of accounting for correlation effects in seismic assessments to ensure the safety and reliability of high-speed train operations on bridges during earthquakes.</p></div>","PeriodicalId":596,"journal":{"name":"International Journal of Steel Structures","volume":"25 1","pages":"315 - 326"},"PeriodicalIF":1.1000,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Steel Structures","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s13296-025-00936-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The increasing reliance on bridges in high-speed railway systems and the growing risk of earthquakes necessitate advanced seismic analyses of train–bridge interactions. This study addresses the dynamic behavior of a high-speed train and long-span cable-stayed bridge system under seismic ground motions, with a focus on the correlation effects among ground motion components in diverse directions. The analysis incorporates track irregularities, rigid wheel–rail contact, and a coupled equation of motion solved using the time integration method. Results reveal that correlated ground motions significantly influence the system’s stochastic responses, including estimated maximum accelerations of bridge spans and towers, wheel–rail contact forces, and offload factors. These findings underscore the importance of accounting for correlation effects in seismic assessments to ensure the safety and reliability of high-speed train operations on bridges during earthquakes.
期刊介绍:
The International Journal of Steel Structures provides an international forum for a broad classification of technical papers in steel structural research and its applications. The journal aims to reach not only researchers, but also practicing engineers. Coverage encompasses such topics as stability, fatigue, non-linear behavior, dynamics, reliability, fire, design codes, computer-aided analysis and design, optimization, expert systems, connections, fabrications, maintenance, bridges, off-shore structures, jetties, stadiums, transmission towers, marine vessels, storage tanks, pressure vessels, aerospace, and pipelines and more.