黄土地铁隧道盾构施工地表沉降机理与控制措施研究

发布时间：2018-05-22 07:08

本文选题：施工环境 + 数值计算　；参考：《石家庄铁道大学》2015年硕士论文

【摘要】：本文以西安地铁一号线TJSG-9标为背景,,针对本项目区间沿线管线密布,建筑物林立,区间穿越国家重点保护文物——西安古城墙及护城河等重要建筑物,对沉降控制要求非常高等不利因素,且标段内的西安特殊的湿陷性黄土地层在施工过程中沉降控制难度大等复杂情况。重研究土压平衡盾构机在西安的典型湿陷性黄土地层中施工时,隧道埋深、地层条件、盾构机掘进参数的设定、施工措施等因素对地面沉降的出现、发展规律的影响,以及采取相应的措施后对地面沉降变化规律。采用理论计算、数值分析建立模型对护城河老桥和西安古城墙的沉降做出预测和分析,再通过实际施工过程中参数设定和值采集,最后总结沉降规律和施工经验,为类似地层中沉降机理和控制措施提供参考和借鉴。
[Abstract]:Based on the background of the TJSG-9 standard of the Xi'an Metro Line 1 line, this paper, in view of the close distribution of pipelines along the line of the project, the building forest, and the interval crossing the key cultural relics of the state, such as the ancient city wall and the moat of Xi'an, has very high unfavorable factors for the settlement control, and the special collapsible loess strata in the Xi'an section are applied in the section. In the construction of the typical collapsible loess strata in Xi'an, the depth of the tunnel, the formation conditions, the setting of the tunneling parameters, the construction measures and other factors on the appearance of ground subsidence, the development of the rules and the corresponding measures to the ground subsidence are studied. By theoretical calculation and numerical analysis, the model is used to predict and analyze the settlement of the old bridge and the ancient city wall of Xi'an, and then through the parameters setting and value collection in the actual construction process, the settlement law and construction experience are summed up, and the settlement mechanism and control measures in the similar strata are provided for reference and reference.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.43;U231.3

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