王宝, 吕高乐, 盖文, 易领兵, 吕新春. 2018: 高水位软土地区地下连续墙与内支撑联合支护体系关键影响因素分析研究. 工程地质学报, 26(s1): 362-369. DOI: 10.13544/j.cnki.jeg.2018264
    引用本文: 王宝, 吕高乐, 盖文, 易领兵, 吕新春. 2018: 高水位软土地区地下连续墙与内支撑联合支护体系关键影响因素分析研究. 工程地质学报, 26(s1): 362-369. DOI: 10.13544/j.cnki.jeg.2018264
    WANG Bao, LÜ Gaole, GE Wen, YI Lingbing, LÜ Xinchun. 2018: ANALYSIS OF KEY FACTORS AFFECTING THE COMBINED SUPPORT SYSTEM OF DIAPHRAGM WALL AND INNER SUPPORT IN HIGH WATER LEVEL SOFT SOIL AREA. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 362-369. DOI: 10.13544/j.cnki.jeg.2018264
    Citation: WANG Bao, LÜ Gaole, GE Wen, YI Lingbing, LÜ Xinchun. 2018: ANALYSIS OF KEY FACTORS AFFECTING THE COMBINED SUPPORT SYSTEM OF DIAPHRAGM WALL AND INNER SUPPORT IN HIGH WATER LEVEL SOFT SOIL AREA. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 362-369. DOI: 10.13544/j.cnki.jeg.2018264

    高水位软土地区地下连续墙与内支撑联合支护体系关键影响因素分析研究

    ANALYSIS OF KEY FACTORS AFFECTING THE COMBINED SUPPORT SYSTEM OF DIAPHRAGM WALL AND INNER SUPPORT IN HIGH WATER LEVEL SOFT SOIL AREA

    • 摘要: 天津某地铁深基坑位于市中心,周边分布有住宅小区、在建高层住宅、学校、研究所等,该基坑深度约17.72m。该基坑开挖面积大,基坑深度深,地下水位高,土层以粉质黏土等软土为主。该基坑围护结构采用地下连续墙与内支撑联合支护型式。本文通过控制变量法研究了地下连续墙嵌固深度不同时地下连续墙自身受力变形特征及周边地表沉降规律。研究得出地下连续墙及周边地表沉降变形规律,以此确定围护结构最优支护方案。研究成果可以为类似基坑方案设计提供参考。

       

      Abstract: A deep foundation pit of a subway in Tianjin is located in the center of the city. There are residential quarters, high-rise residential buildings, schools, research institutes and so on. The foundation pit is about 17.72m deep. The excavation area is large. The depth of foundation pit is deep. The groundwater level is high, and the soil layer is mainly composed of soft clay, such as silty clay. The foundation pit enclosure structure adopts the joint support type of underground continuous wall and inner support. In this paper, the characteristics of the stress and deformation of the continuous wall of underground continuous wall and the law of the surrounding ground settlement are studied by the control variable method. The law of settlement and deformation of underground continuous wall and surrounding surface is obtained, so as to determine the optimal supporting scheme of retaining structure. The research results can provide reference for similar foundation pit design.

       

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