铁道标准设计2024，Vol.68Issue(6)：86-93,8.DOI:10.13238/j.issn.1004-2954.202210310005
波纹板加固技术在铁路病害涵洞中的应用研究
Study on the Application of Corrugated Plate Reinforcement Technology in Railway Diseased Culverts
摘要
Abstract
Culvert is an important part of railway,and it is also the most neglected railway equipment in daily maintenance.The deterioration and mechanical performance of culvert structure directly affect the safety and stability of the line.Aiming at the problems of insufficient bearing capacity,excessive settlement,dislocation and durability reduction of heavy haul railway culverts under the condition of speed-up reconstruction,this paper conducts the mechanism analysis of culvert reinforcement with assembled corrugated plate,the performance analysis and sensitivity analysis of culvert reinforcement with key parameters of corrugated plate and the practical engineering application technology of culvert reinforcement with corrugated plate based on the methods of finite element analysis,test detection and engineering application.The results show that the overall stiffness of the culvert structure is significantly improved,the stress and deformation of the culvert roof are significantly reduced,and the reinforcement effect is better after using corrugated plate reinforcement technology.Under the same size condition and compared with the rectangular and triangular corrugated plate structures,the maximum vertical displacement and maximum stress value of the roof span can be reduced by 20％or more after the culvert is reinforced by the circular arc corrugated plate,and the circular arc corrugated plate has better reinforcement effect.Under the combined load of the main force,with the increase of the wave height and wave distance of the corrugated plate,the Mises stress of the corrugated plate decreases gradually,and the Mises stress is inversely proportional to the span of the culvert.The field test results of 16 culverts show that the stress and deformation of culverts with different spans and frame culverts are significantly reduced after corrugated plate reinforcement,and the mid-span deflection and dynamic strain are reduced by more than 40％compared with those before reinforcement.Corrugated plate technology has a good reinforcement effect in the culverts of heavy haul railway.关键词
铁路涵洞/病害涵洞/波纹板/加固技术/数值模拟/工程应用Key words
railway culvert/diseased culvert/corrugated plate/reinforcement technology/numerical simulation/engineering application分类
交通工程引用本文复制引用
陈树礼,崔春锴,杜明康,刘永前,许宏伟..波纹板加固技术在铁路病害涵洞中的应用研究[J].铁道标准设计,2024,68(6):86-93,8.基金项目
国家重点研发计划重点专项(2016YFC0802202-3) （2016YFC0802202-3）
河北省重点研发计划项目(20375410D) （20375410D）
