黄土隧道初期支护性能分析  

Analysis of initial support properties for loess tunnel

作　　者：霍润科[1,2] 王艳波[1] 宋战平[1,2] 于钦源 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]西安建筑科技大学结构工程与抗震教育部重点实验室,西安710055 [3]中铁十三局集团有限公司,长春130033

出　　处：《岩土力学》2009年第S2期287-290,共4页Rock and Soil Mechanics

基　　金：陕西省自然科学基础研究计划项目(No.2009JM7005);陕西省重点学科建设专项资金资助;西安建筑科技大学基础研究项目(No.JC0607);人才科技基金项目(No.RC0708)

摘　　要：以定西隧道为背景,利用有限元软件进行模拟。通过监控量测获得典型断面围岩的变化规律,并将数值模拟和现场量测结果进行对比分析,得到隧道在开挖扰动后初期支护的受力状态,给出隧道初期支护的优化参数,研究将对该类地区黄土隧道的初期支护提供建议和方法。Taking the Dingxi tunnel as the background,deformation rules of its typical cross-section's surrounding loess are studied by using the finite-element software;meanwhile,by field monitoring;then the results of numerical simulation are compared with field measurement in order to get the state of stress which brought to the optimal parameters of initial support after excavation.Based on the above,some advices and techniques for initial support in the similar region,are put forward.

关 键 词：黄土隧道 初期支护 有限元分析 

分 类 号：U452.12[建筑科学—桥梁与隧道工程]