油气管道越江盾构隧道结构设计参数优化分析
发布时间：2018-08-24 14:05
【摘要】：随着高速铁路、高速公路、城市地铁以及各种市政工程和地下管廊的修建,出现了大量的地下空间工程,而辅助工作井成为连接上述地下工程的地面与地下空间所必须的通道,其结构的安全与稳定是设计和施工中所关注的问题。对于油气管道,为了归纳和分析其盾构法施工时各项的结构设计参数,结合广东省天然气管网一期工程西江泥水盾构隧道和二期管道工程南坦海越江泥水盾构隧道的工程特点,首先对西江盾构隧道管片结构进行安全性分析,并在此基础上对南坦海盾构隧道工作竖井及其围护结构以及江底段泥水盾构隧道管片衬砌所承受的地层压力进行现场测试,并通过对监测结果的分析提出输气管道盾构隧道工作竖井围护结构和越江段盾构管片的优化设计参数,为今后类似油气管道越江盾构隧道的结构设计提供指导。本文主要的研究内容与成果如下:(1)结合西江盾构隧道特点评价了管片的安全性,并在南坦海盾构隧道的工作竖井和围护结构、江底段盾构隧道管片衬砌进行现场测试,监测它们受到的地层压力,获得了工作竖井围护结构地下连续墙和内层衬砌以及江底段盾构隧道管片所承受的地层压力的分布状况。(2)使用ANSYS软件进行有限元分析,根据现场监测结果,按照结构与荷载模式计算得到始发井地下连续墙变形和内力分布特点。(3)根据数值计算所得内力,按照破损阶段设计法对工作井围护结构的地下连续墙、内层衬砌和江底段盾构隧道管片结构的安全性进行分析与评价。(4)依据计算结果及工程实测数据的分析,给出了油气管道盾构隧道工作井围护结构中地下连续墙、内层衬砌及江底段盾构隧道管片的优化设计参数。
[Abstract]:With the construction of high-speed railways, highways, urban subways and various municipal projects and underground pipe corridors, a large number of underground space projects have emerged, and auxiliary working wells have become the necessary passage to connect the ground and underground spaces of the above mentioned underground projects. The safety and stability of its structure is a concern in design and construction. For the oil and gas pipeline, in order to summarize and analyze the structural design parameters of each item during the shield construction, combined with the engineering characteristics of Xijiang mud water shield tunnel in the first phase of Guangdong natural gas pipeline network and Nantan Haiyue River mud water shield tunnel in the second phase pipeline project, First of all, the safety analysis of the segment structure of Xijiang shield tunnel is carried out, and on this basis, the working shaft and its enclosure structure of the shield tunnel in Nantanhai, and the formation pressure of the segment lining of the mud shield tunnel in the bottom section of the river are tested on the spot. Through the analysis of the monitoring results, the optimal design parameters of the working shaft enclosure structure of shield tunnel and the shield segment of cross river section of gas transmission pipeline are put forward, which will provide guidance for the structural design of similar oil and gas pipeline tunnel crossing river shield tunnel in the future. The main contents and achievements of this paper are as follows: (1) the safety of segment is evaluated in combination with the characteristics of Xijiang shield tunnel, and field tests are carried out in the working shaft and enclosure structure of the shield tunnel in Nantanhai, and in the lining of shield tunnel segment in the bottom section of the river. Monitoring the formation pressure they are subjected to, the distribution of the underground continuous wall and inner lining of the working shaft enclosure and the shield tunnel segment in the bottom section of the river are obtained. (2) the finite element analysis is carried out by using ANSYS software. According to the field monitoring results, the deformation and internal force distribution characteristics of underground continuous wall of primary well are calculated according to the structure and load mode. (3) according to the numerical calculation of internal force, the underground continuous wall of working well enclosure structure is designed according to the method of damage stage design. The safety of shield tunnel segment structure in inner lining and river bottom section is analyzed and evaluated. (4) according to the calculation results and the analysis of engineering measured data, the underground continuous wall in the working well protection structure of shield tunnel in oil and gas pipeline is given. Optimization design parameters of shield tunnel segment in inner lining and river bottom section.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE973;U455.43
本文编号：2201052
[Abstract]:With the construction of high-speed railways, highways, urban subways and various municipal projects and underground pipe corridors, a large number of underground space projects have emerged, and auxiliary working wells have become the necessary passage to connect the ground and underground spaces of the above mentioned underground projects. The safety and stability of its structure is a concern in design and construction. For the oil and gas pipeline, in order to summarize and analyze the structural design parameters of each item during the shield construction, combined with the engineering characteristics of Xijiang mud water shield tunnel in the first phase of Guangdong natural gas pipeline network and Nantan Haiyue River mud water shield tunnel in the second phase pipeline project, First of all, the safety analysis of the segment structure of Xijiang shield tunnel is carried out, and on this basis, the working shaft and its enclosure structure of the shield tunnel in Nantanhai, and the formation pressure of the segment lining of the mud shield tunnel in the bottom section of the river are tested on the spot. Through the analysis of the monitoring results, the optimal design parameters of the working shaft enclosure structure of shield tunnel and the shield segment of cross river section of gas transmission pipeline are put forward, which will provide guidance for the structural design of similar oil and gas pipeline tunnel crossing river shield tunnel in the future. The main contents and achievements of this paper are as follows: (1) the safety of segment is evaluated in combination with the characteristics of Xijiang shield tunnel, and field tests are carried out in the working shaft and enclosure structure of the shield tunnel in Nantanhai, and in the lining of shield tunnel segment in the bottom section of the river. Monitoring the formation pressure they are subjected to, the distribution of the underground continuous wall and inner lining of the working shaft enclosure and the shield tunnel segment in the bottom section of the river are obtained. (2) the finite element analysis is carried out by using ANSYS software. According to the field monitoring results, the deformation and internal force distribution characteristics of underground continuous wall of primary well are calculated according to the structure and load mode. (3) according to the numerical calculation of internal force, the underground continuous wall of working well enclosure structure is designed according to the method of damage stage design. The safety of shield tunnel segment structure in inner lining and river bottom section is analyzed and evaluated. (4) according to the calculation results and the analysis of engineering measured data, the underground continuous wall in the working well protection structure of shield tunnel in oil and gas pipeline is given. Optimization design parameters of shield tunnel segment in inner lining and river bottom section.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE973;U455.43
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