摘要
针对我国西南复杂艰险山区高速铁路建设与运营中路基、桥梁和隧道出现导致列车运行速度减慢的病害(慢行病害),依托南昆、沪昆、西成高铁3条复杂艰险山区高速铁路运营期间监测与补充勘察资料,分析不同慢行病害的危害方式与变形破坏特征,研究高速铁路慢行病害产生的原因,提出治理方案.研究得出结论:地层岩性、地形地貌、构造应力环境、气候降雨、岩体结构条件等多重因素造成复杂艰险山区高速铁路出现路基基底上拱、斜坡桥梁位移、隧道基底上拱、隧道混凝土腐蚀等慢行病害,针对不同慢行病害提出多种治理方案.研究成果可为复杂艰险山区高速铁路工程建设、运营维护提供借鉴.
Abstract
Targeting various slow traffic defects often found in earthworks,bridges,and tunnels during the construction and operation of HSRs in challenging mountain areas in southwestern China,this paper looks at the hazard modes and the deformation and failure characteristics of different slow traffic defects,based on the monitoring and supplementary survey data collected during the operation of three HSRs in challenging mountain areas:Yunnan-Guangxi Railway(Nanning-Kunming HSR),Shanghai-Kunming HSR,and Xi'an-Chengdu HSR.Additionally,the causes of HSR slow traffic defects are examined in this paper,and treatment solutions were proposed.The research findings indicate that several factors,including formation lithology,topography,landform,tectonic stress environment,climate and rainfall,and rock structure conditions,lead to the occurrence of various slow traffic defects such as earthworks base upwarp,displacement of bridges on slopes,tunnel base upwarp,and tunnel concrete corrosion.Different treatment solutions are proposed to address specific slow traffic defects.The research results provide a reference for the operation and maintenance of HSRs in challenging mountain areas.
维普
万方数据