大跨度隧道单—双侧壁导坑法施工力学分析  

Construction Mechanics Analysis of One-Cheek and Two-Cheek pilot Method of Large Span Tunnel

作　　者：汪立新 

机构地区：[1]中铁十九局集团第二工程有限公司,辽宁辽阳111000

出　　处：《西部探矿工程》2007年第10期170-173,共4页West-China Exploration Engineering

摘　　要：结合某大跨度四车道隧道建设,通过单、双侧壁导坑法动态施工过程的弹塑性有限元数值模拟,对隧道Ⅳ级围岩段的围岩-支护结构体屈服接近度、位移和应力特征进行了比较分析,提出了该隧道较优的施工方法。为类似地质条件下的大跨度隧道设计和施工提供了科学依据。Combined a large span four lane tunnel building,characteristics of approach yield degree,displacement and stress of tunnel surrounding rock-support structure body in Ⅳ class surrounding rock plat have been comparative analyses through elasto-plastic finite element numerical modeling of one-cheek and two-cheek pilot method dynamic excavation process.The optimized construction method of tunnel has been put forward in this paper.The study provided science foundation for similar geo-condition large span tunnel design and construction.

关 键 词：大跨度隧道 侧壁导坑法 数值模拟 

分 类 号：U455[建筑科学—桥梁与隧道工程]