西安市南门与环城南路隧道基坑工程施工组织与设计研究

发布时间：2018-04-27 03:33

本文选题：基坑工程 + 施工方案　；参考：《长安大学》2014年硕士论文

【摘要】：论文以南门与环城南路基坑施工实例为依托，对基坑开挖过程中的施工组织、地下管线保护、交通疏导和基坑支护、降水、监测等方面进行详细地研究，解决主城区基坑施工难度大、对周围环境及交通影响大等问题。通过对现场地质勘察和周围环境调查表明：南门与环城南路交通综合治理工程沿线主要以人工填土、黄土及粉质粘土为主，整体地下水位较浅，对基坑的施工影响比较大；工程所处区域道路网发达，交通量大，且区域内地下管线较为复杂，场地范围内有雨水、给水电信、天然气等各种管线，，这些都是本基坑工程施工的重要影响因素。综合考虑现场工程地质、水位地质情况，及区域内地下管线、交通量因素，提出两套基坑施工方案，经过方案对比分析，确定一套合理的基坑施工方案，即灌注桩加内支撑的支护形式施工方案，并对此方案作出较为详细的施工组织分析。对工程区域的水文地质及周围环境综合分析，通过计算，提出了一套合理的基坑降水施工方案。在基坑工程施工过程中，对地表沉降、水平位移、地下水位及支撑轴力等方面进行监控量测，用现场实测的结果弥补理论分析过程中存在的不足，并把监测结果反馈给设计、指导施工，同时验证设计施工的合理性。考虑区域内交通状况及地下管线的影响，分别提出了合理的交通组织措施和地下管线保护方案，以保证基坑工程施工的安全性、合理性及有效性。
[Abstract]:Based on the construction examples of the foundation pit in Nanmen and Huancheng South Road, the paper makes a detailed study on the construction organization, underground pipeline protection, traffic diversion and foundation pit support, precipitation and monitoring during the excavation process of the foundation pit. It is difficult to construct foundation pit in main urban area and has great influence on surrounding environment and traffic. Through field geological investigation and surrounding environment investigation, it is shown that: the road between Nanmen and Huancheng South Road is mainly filled with artificial soil, loess and silty clay are main, the whole groundwater level is shallow, and the influence on foundation pit construction is great; The road network of the project is developed, the traffic volume is large, and the underground pipeline in the area is more complicated. There are Rain Water, water supply telecommunication, natural gas and other pipelines in the field. These are the important factors influencing the construction of this foundation pit project. Considering the field engineering geology, water level geology, underground pipeline and traffic volume in the area, two sets of foundation pit construction schemes are put forward, and a set of reasonable foundation pit construction plan is determined through comparative analysis of the plans. That is, the construction scheme of cast-in-place pile with internal support, and the detailed analysis of the construction organization. Based on the comprehensive analysis of hydrogeology and surrounding environment in engineering area, a set of reasonable foundation pit dewatering construction scheme is put forward by calculation. In the process of foundation pit construction, the ground subsidence, horizontal displacement, underground water level and supporting axial force are monitored and measured, and the field measured results are used to make up for the deficiencies in the theoretical analysis process, and the monitoring results are fed back to the design. Guide construction and verify the rationality of design and construction. Considering the traffic situation in the area and the influence of underground pipeline, reasonable traffic organization measures and underground pipeline protection scheme are put forward to ensure the safety, rationality and effectiveness of foundation pit construction.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455

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