新建隧道軟土地基加固方案研究
趙樂之1，喬 磊2，喬 寧3
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(1 北京市市政工程設(shè)計研究總院,北京 100082；2 城市建設(shè)研究院，北京 100120；3 煙建集團(tuán)第六建筑安裝分公司，煙臺264003)[摘要]近年來，隨著我國鐵路、公路及市政建設(shè)事業(yè)的高速發(fā)展，城市化進(jìn)程逐步加快，城市地下道路建設(shè)如火如荼地進(jìn)行。由于地質(zhì)條件的限制及地下空間的綜合開發(fā)利用，在地下工程中不可避免地遇到軟土地基，導(dǎo)致基礎(chǔ)底部承載力強(qiáng)度不足，嚴(yán)重威脅地下工程的安全。鑒于軟土地基會對新建地下道路造成不利影響，同時也增加了地下工程的施工難度。本文結(jié)合某城市地下道路工程設(shè)計實例，著重對比分析軟土地基加固方案的優(yōu)劣，探討軟土地基注漿加固時所需注意事項，對其它城市地下道路在軟土地基上的施工具有一定的指導(dǎo)意義。[關(guān)鍵詞] 軟基處理;施工方案;注漿加固;監(jiān)控量測中圖分類號：U451 文獻(xiàn)標(biāo)識碼：A 文章編號：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
