The China southwest region features mountainous terrain and significant undulations.Several existing high-speed rail lines encounter varying degrees of arching on soft rock foundations in tunnel and deep cutting sections,resulting in uneven tracks and posing a severe safety risk to high-speed rail operations.Exploiting the opportunity of Chengdu-Chongqing high-speed railway's renovation for quality improment,we implemented"subgrade excavation"and"pile-slab structure reconstruction for ballastless tracks"to address two typical subgrade defects on the Chengdu-Chongqing high-speed railway,yielding positive treatment outcomes.The successful resolution of arching defects on the Chengdu-Chongqing high-speed railway's subgrade has gained invaluable expertise,offering technical guidance for subsequent defect rectifications.
关键词
高速铁路/无砟轨道/病害整治/基底上拱/基床暗挖/桩板结构
Key words
high-speed railway/ballastless track/disease remediation/base arch/foundation bed digging/pile plate structure
维普
万方数据