顶管电力隧道保护值的分析研究  

Analysis of Protection of Cable Tunnel Constructed by Pipe-jacking Method

作　　者：毛南平 

机构地区：[1]国网宁波供电公司

出　　处：《地下工程与隧道》2015年第4期29-33,58,共5页Underground Engineering and Tunnels

摘　　要：介绍了国内外隧道保护标准,对比轨道交通区间隧道与电力隧道的异同,探究了顸管电力隧道的变形和受力特性。以宁波澄浪电力隧道工程为例,分析顶管隧道接头构造及隧道不同位置的破坏模式,详细计算并分析了隧道不同位置允许位移值与隧道直径和顸管管节长度的关系。这为软土地层中的电力顶管隧道保护标隹的制订提供参考。The paper introduces the tunnel protection standards in China and abroad;compares the differences between rail transit interval tunnel and cable tunnel;and explores deformation and stress characteristics of cable tunnel constructed by pipe jacking method.Taken Ningbo Cheng Lang Cable Tunnel Project as an example,analysis is made to the joint structure of pipe jacked tunnel and tunnel failure mode at different positions.Detailed calculations and analysis are made to the relationships of allowable displacement at tunnel different position with tunnel diameter and with length of pipe jacking segment.It will be a reference for protection of cable tunnel by pipe-jacking method in soft ground.

关 键 词：顶管 电力隧道保护标准 临界位移 附加荷载黏土 变形控制 

分 类 号：U451[建筑科学—桥梁与隧道工程] U458[交通运输工程—道路与铁道工程]