邢汾高速公路隧道施工力学行为分析及监控量测技术研究

发布时间：2018-05-14 10:23

本文选题：高速公路隧道 + 施工力学行为　；参考：《石家庄铁道大学》2015年硕士论文

【摘要】：进入21世纪以来,我国高速公路隧道的建设与运营管理出现了一些新的特点,如大跨度大断面隧道建设数量的不断增长、大型凿岩机械的实际应用、对洁净施工环境的重视以及对网络信息智能技术的初步应用等。伴随着这些新特点的相继涌现,相应的出现了一些需要解决的技术难题。尽管我国隧道科技工作者与施工管理人员在这些技术问题的研究与解决方面做出了积极的贡献并取得了一定的研究成果,但在实际当中仍存在影响隧道安全快速建设与安全快捷运营的特殊或瓶颈问题亟待解决。目前,河北省高速公路建设主战场已经进入山区,隧道所占比例特别是大跨度大断面三车道高速公路隧道明显增加,研究三车道大断面高速公路隧道施工力学行为及监控量测技术,对于保证隧道施工安全,加快高速公路建设有着重要意义。论文以邢汾高速公路隧道为研究背景,采用数值分析与现场试验相结合的手段,分别开展了不同围岩级别、不同施工方法、不同覆盖层厚度的隧道施工力学行为,分析了隧道施工过程中围岩和支护结构受力和变形规律,并开展了地质素描、地表沉降、拱顶下沉、净空收敛、钢架应力、锚杆轴力和松动圈的现场监控量测。通过理论分析和现场测试,为及时调整设计和施工参数提供技术支持,也为保证隧道施工安全和施工质量提供技术保障。
[Abstract]:Since the beginning of the 21st century, some new features have emerged in the construction and operation management of expressway tunnels in China, such as the increasing number of large-span and large-section tunnels and the practical application of large-scale drilling machinery. The importance of clean construction environment and the preliminary application of intelligent network information technology. With the emergence of these new features, there are some technical problems to be solved. Although our tunnel science and technology workers and construction managers have made positive contributions to the research and solution of these technical problems and have achieved some research results, However, in practice, there are still some special or bottleneck problems affecting the safe and fast construction and operation of tunnels. At present, the main battlefield of highway construction in Hebei Province has entered the mountainous areas, and the proportion of tunnels, especially the large span, large cross-section, three-lane highway tunnels, has increased significantly. It is of great significance to study the mechanical behavior and monitoring and measuring technology of three-lane and large-section highway tunnel construction to ensure the tunnel construction safety and speed up the expressway construction. Based on the research background of Xingfen Expressway Tunnel, this paper uses the method of numerical analysis and field test to carry out the mechanical behavior of tunnel construction with different surrounding rock classes, different construction methods and different overburden thickness. The law of stress and deformation of surrounding rock and supporting structure in the course of tunnel construction is analyzed, and field monitoring and measurement of geological sketch, ground subsidence, dome subsidence, clearance convergence, steel frame stress, bolt axial force and loosening ring are carried out. Through theoretical analysis and field test, technical support is provided for timely adjustment of design and construction parameters, as well as technical guarantee for tunnel construction safety and construction quality.
【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】：U456.3

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