高速铁路隧道下穿既有高速公路路基沉降规律研究  

Study of Surface Settlement Rule and for High-speed Railway Tunnel Undercrossing Roadbed of Existing Highway

作　　者：张安睿[1] 

机构地区：[1]贵州省交通规划勘察设计研究院股份有限公司,贵阳550081

出　　处：《交通科技》2015年第6期62-64,共3页Transportation Science & Technology

摘　　要：依托成都-贵阳高铁大方隧道工程,对高速铁路隧道下穿既有高速公路路堤影响进行研究,通过三维建模计算了路面的沉降分布规律,并采用Peck公式对横向沉降进行拟合分析,二者吻合良好,通过计算得到地层损失率vl为2.8%,沉降槽宽度系数K为0.86。Roadbed of existing highway affected by high-speed railway tunnel was studied based on the project of Dafang tunnel of Chengdu-Guiyang high-speed railway. Road surface settlement rule was gained by 3-D modeling. Transverse surface settlement was good fit of Peck formula. Strata loss rate （v1=2.8%） and width coefficient of settlement tank （K=0.86） were gained by calculation.

关 键 词：高铁隧道 既有高速公路路基 沉降规律 数值模拟 

分 类 号：U459.1[建筑科学—桥梁与隧道工程]