摘要
哈尔滨地铁一段长859 m的区间线路,利用既有人防隧道单侧扩挖改造。采用荷载—结构分析法研究既有人防隧道结构破除对既有结构内力的影响,考虑冬季施工地层与结构之间的相互作用,进一步应用地层—结构分析法以研究径向注浆效果、跳槽法施工工效。最后详细介绍了既有隧道单侧扩挖改建工艺,可为类似工程提供参考。
An 859-m long metro in Harbin was excavated and renovated through a one-side cut of an existed civil air defense tunnel. A load-structure analysis w as conducted to study the effect of the destroyed existed tunnel on the internal structural force,w ith consideration of the interaction betw een the foundation and the structure during the winter construction period. Furthermore,the analysis of foundation-structure was applied to assess the effect of radial grouting and job-hopping construction. Finally,the excavation and renovation technology of subway through a one-side cut of an existed tunnel w as introduced in detail.
出处
《铁道建筑》
北大核心
2014年第10期27-31,共5页
Railway Engineering
关键词
高寒地区
隧道扩挖
受力分析
Frigid region
T unnel expansive excavation
Stress Analysis
