新建隧道软土地基加固方案研究
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(1 北京市市政工程设计研究总院,北京 100082；2 城市建设研究院，北京 100120；3 烟建集团第六建筑安装分公司，烟台264003)[摘要]近年来，随着我国铁路、公路及市政建设事业的高速发展，城市化进程逐步加快，城市地下道路建设如火如荼地进行。由于地质条件的限制及地下空间的综合开发利用，在地下工程中不可避免地遇到软土地基，导致基础底部承载力强度不足，严重威胁地下工程的安全。鉴于软土地基会对新建地下道路造成不利影响，同时也增加了地下工程的施工难度。本文结合某城市地下道路工程设计实例，着重对比分析软土地基加固方案的优劣，探讨软土地基注浆加固时所需注意事项，对其它城市地下道路在软土地基上的施工具有一定的指导意义。[关键词] 软基处理;施工方案;注浆加固;监控量测中图分类号：U451 文献标识码：A 文章编号：1002-848X(2013)S1-0938-04Study on reinforcement schemes of soft soil foundation in new tunnel's constructionZhao Lezhi1,Qiao Lei2,Qiao Ning3(1 Beijing General Municipal Engineering Design & Research Institute, Beijing 10008,China; 2 Urban Construction Design & Research Institute, Beijing 100120,China; 3 Yanjian Group Sixth Construction and Installation Branch Company, Yantai 264003, China)Abstract: In recent years, construction of urban tunnel is developed vigorously with the high-speed development of railways, highways and municipal construction and the acceleration of current urbanization process in China. Due to the influence of geological conditions and comprehensive exploitation and application of underground space, soft soil foundation is an inevitable problem in underground construction, which will result in shortages of the bearing capacity of foundation bottom and severe threats of the safety of underground engineering. As soft soil foundation has disadvantageous influences on new underground roads and increases the difficulty of the construction of underground engineering, reinforcement schemes of soft soil foundation are comparatively analyzed and points for attention of grouting reinforcements of soft soil foundation are discussed in this paper, combining with an example of the design of urban underground road engineering, which are important to the construction of future underground engineering with soft soil foundation.Keywords: soft soil foundation; construction scheme; grouting reinforcement; monitoring measurement
