既有重载铁路隧道底鼓原因及处置措施  

Base Heaving Cause and Its Treatment Measures for Existing Heavy Haul Railway Tunnel

作　　者：李尧[1] 付兵先[2] 张千里[2] 马伟斌[2] LI Yao FU Bingxian ZHANG Qianli MA Weibin(China Academy of Railway Sciences, Beijing 100081, China Railway Engineering Research China Academy of Railway Sciences, Beijing 100081,China)

机构地区：[1]中国铁道科学研究院,北京100081 [2]中国铁道科学研究院铁道建筑研究所,北京100081

出　　处：《铁道建筑》2016年第12期53-56,共4页Railway Engineering

基　　金：国家自然科学基金高铁联合基金(U1434211);中国铁道科学研究院科研基金(2015YJ039);铁道科学技术研究发展中心科研项目(J2014G004)

摘　　要：针对一既有重载铁路单线隧道运营期内出现的底鼓问题,通过现场探测并结合隧道底鼓监测数据,分析隧道产生底鼓的原因。借助有限元软件Ansys建立了荷载-结构模型,对隧道底鼓开裂进行了数值分析,在此基础上,提出了该隧道基底的整治方案——基底换底方案,并对换底方案中的线路架空以及隧底翻修进行了有关检算。According to the base heaving of one existing single-line tunnel in heavy haul railway during the operation period,the paper analyzed the causes of tunnel base heaving by using the field tests and monitoring data of tunnel base heaving.A load-structure model was established with finite element software Ansys,the numerical analysis of base heaving crack in tunnel was conducted,the treatment scheme of tunnel basement,which was base replacement scheme,was proposed on this basis,and the overhead line and tunnel base renovation in base replacement schemes were checked and calculated.

关 键 词：重载铁路 隧道底鼓 成因分析 架空线路 换底方案 

分 类 号：U457.2[建筑科学—桥梁与隧道工程]