浅埋大断面土质隧道下穿既有构造物沉降控制标准与措施研究
发布时间：2018-12-25 09:51
【摘要】：我国经济技术的高速发展为现代公路隧道的建设提供了优越的条件，隧道工程的质量和速度在短短几年内得到了很大的提高，我国不论在隧道数量，建设规模还是发展速度上都是世界之最，其间隧道的发展呈现出从短到长，从小到大，从单一功能到多用途的模式转化，对于山区高速公路隧道而言，由于地质条件的多样性和地形的限制，隧道的形式和工程重点问题也随之不同，一系列新型的、独特的隧道形式频频出现，其中下穿已有结构物的实例不断出现，这即给工程设计和施工人员提出了新的挑战，又给予了他们绝好的研究和实践基础，已有的研究涵盖了隧道发展领域的方方面面，成果丰硕，但正是由于这种多样性和复杂性，，使得研究仍然不能很好的解决实际中隧道工程所出现的多种问题，仍然需要后人继续不遗余力的开拓创新，刻苦钻研。 本文依托山西王城高速西河口隧道工程，针对其三车道大断面，隧道埋藏深度小，围岩条件差，穿越国家一级保护文物明长城的特点。运用ANSYS软件模拟实际施工过程，研究浅埋大断面土质隧道穿越已有结构物明长城的安全性问题，重点分析长城在隧道施工过程中所受到的影响，通过理论研究给出保证长城结构安全的控制标准初值，随后按照施工影响率将控制标准初值进行分配，最终形成具有科学性和操作性的控制标准，并结合已有的现场量测数据分析沉降对长城结构变形及受力条件的影响规律,并对施工采用的处置措施和效果进行评价，给出能够保证浅埋大断面隧道自身和所穿越建筑物安全的工程措施和判断标准。
[Abstract]:The rapid development of economy and technology in our country has provided superior conditions for the construction of modern highway tunnel. The quality and speed of tunnel engineering have been greatly improved in just a few years, regardless of the number of tunnels in our country. The construction scale and the speed of development are the most in the world, during which the tunnel development presents a transformation from short to long, from small to large, from a single function to a multi-purpose mode. Due to the diversity of geological conditions and the limitation of topography, the form of tunnel and the key problems of engineering are different. A series of new and unique tunnel forms appear frequently, among which the examples of existing structures under the tunnel continue to appear. This brings new challenges to engineering design and construction personnel, and gives them an excellent foundation for research and practice. The existing research covers all aspects of tunnel development and is fruitful, but precisely because of this diversity and complexity. So the research still can not solve many kinds of problems which appear in the actual tunnel engineering, still need the future generations to continue to spare no effort to open up and innovate, study assiduously. Based on the project of Shanxi Wangcheng Expressway West Estuary Tunnel, this paper aims at the characteristics of its three-lane large section, small buried depth, poor surrounding rock condition and passing through the national first-class protected cultural relic, the Great Wall. By using ANSYS software to simulate the actual construction process, this paper studies the safety of shallow buried large section soil tunnel passing through the existing structure, the Great Wall, and emphatically analyzes the influence of the Great Wall during the tunnel construction. Through theoretical research, the control standard initial value of the Great Wall structure is given, and then the initial value of control standard is distributed according to the construction influence rate. Finally, a scientific and operational control standard is formed. The influence of settlement on the deformation and stress condition of the Great Wall structure is analyzed with the existing field measurement data, and the disposal measures and effect of the construction are evaluated. The engineering measures and judgment criteria are given to ensure the safety of the shallow large section tunnel itself and the buildings passed through.
【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】：U455.4
本文编号：2391017
[Abstract]:The rapid development of economy and technology in our country has provided superior conditions for the construction of modern highway tunnel. The quality and speed of tunnel engineering have been greatly improved in just a few years, regardless of the number of tunnels in our country. The construction scale and the speed of development are the most in the world, during which the tunnel development presents a transformation from short to long, from small to large, from a single function to a multi-purpose mode. Due to the diversity of geological conditions and the limitation of topography, the form of tunnel and the key problems of engineering are different. A series of new and unique tunnel forms appear frequently, among which the examples of existing structures under the tunnel continue to appear. This brings new challenges to engineering design and construction personnel, and gives them an excellent foundation for research and practice. The existing research covers all aspects of tunnel development and is fruitful, but precisely because of this diversity and complexity. So the research still can not solve many kinds of problems which appear in the actual tunnel engineering, still need the future generations to continue to spare no effort to open up and innovate, study assiduously. Based on the project of Shanxi Wangcheng Expressway West Estuary Tunnel, this paper aims at the characteristics of its three-lane large section, small buried depth, poor surrounding rock condition and passing through the national first-class protected cultural relic, the Great Wall. By using ANSYS software to simulate the actual construction process, this paper studies the safety of shallow buried large section soil tunnel passing through the existing structure, the Great Wall, and emphatically analyzes the influence of the Great Wall during the tunnel construction. Through theoretical research, the control standard initial value of the Great Wall structure is given, and then the initial value of control standard is distributed according to the construction influence rate. Finally, a scientific and operational control standard is formed. The influence of settlement on the deformation and stress condition of the Great Wall structure is analyzed with the existing field measurement data, and the disposal measures and effect of the construction are evaluated. The engineering measures and judgment criteria are given to ensure the safety of the shallow large section tunnel itself and the buildings passed through.
【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】：U455.4
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