科技创新与应用2025，Vol.15Issue(8)：11-16,20,7.DOI:10.19981/j.CN23-1581/G3.2025.08.003
长联大跨桥梁多缝变形协同体系研究
摘要
Abstract
With the widespread application of high-speed railway seamless track technology,problems such as the additional rail force caused by the longitudinal expansion of the beam body under the action of temperature of the long continuous large-span bridge have become increasingly prominent.In addition,the rail expansion adjuster has poor cooperative deformation performance and complex detection methods,which has become a weak part of the high-speed railway line.Aiming at this characteristic,based on the multi-seam deformation collaborative working system,this paper establishes an integrated finite element model of beam and rail that can effectively reduce the longitudinal expansion force of rail and dissipate the expansion displacement of main beams.Compared with the beam and track analysis model of conventional railway bridges,the feasibility of the system is verified,the influence laws of the longitudinal resistance of the line,bearing friction coefficient and longitudinal spring stiffness on the collaborative system are summarized,and the structural form of the large-span bridge is optimized.关键词
多缝变形/伸缩/相互作用/协同体系/大跨桥梁Key words
multi-seam deformation/expansion/interaction/collaborative system/large-span bridge分类
交通运输引用本文复制引用
柳晨阳,许三平,饶少臣..长联大跨桥梁多缝变形协同体系研究[J].科技创新与应用,2025,15(8):11-16,20,7.基金项目
中国铁建股份有限公司科技研发计划项目(2023-B12) （2023-B12）
