【作者】 夏述光；

【导师】 张开银； 陈光新；

【作者基本信息】 武汉理工大学 ， 船舶与海洋工程， 2003， 硕士

【摘要】 我国高速公路经过近二十年的建设，现已形成相当规模，并逐步由平原地区向山区发展。山区高速公路的建设由于设计要求和地形限制，不可避免地要求修筑隧道工程。对于那些布线困难的短地段，采用联拱隧道形式，是一种解决工程问题的有效手段，现已在许多高速公路上修建了联拱隧道。在联拱隧道的建筑中，对施工工艺的研究，已越来越受到设计、施工和科研单位的关注。 联拱隧道有其自身特点，由于隧道短，埋深浅、围岩差，施工中容易引起塌方。特别是高速公路隧道工程往往采用新奥法施工，其应用在我国仅仅二十来年的时间，人们对新奥法的认识，处于探索与实践中。且隧道结构一般按类比法设计，出于安全考虑，设计上一般采用降低围岩类别，使用复杂的施工工艺来提高施工的安全性，这样无形中增加了工程投资费用且延长了施工工期。因此，如何使用合理的施工方法，安全而又经济地修建联拱隧道，受到了工程技术人员的普遍重视。同时，研究隧道信息化施工的要求日益显现出来。 本文以襄十高速公路联拱隧道建设工程为依托，对隧道的施工方法与工艺进行了阐述和分析。在介绍高速公路隧道区域地质情况及联拱隧道设计的基础上，对联拱隧道的施工方案从理论上进行了计算分析。采用平面弹性有限元理论，运用2D-σ土木工程FEM分析系统，对隧道施工过程进行模拟计算，主要分析了隧道施工过程中围岩的应力分布、围岩变形状况和支护与衬砌的受力、变形情况。然后，根据隧道施工的各个工序进行模拟分析，并结合对围岩周边位移、地表下沉、围岩与喷层压力、围岩体内部位移、锚杆轴力、支护及衬砌强度进行的量测与监控，对量测结果作出了科学分析，从而对隧道围岩的稳定性和支护结构的安全性做出了综合评判。将计算结果与施工方案进行对比分析，为隧道施工提供了科学依据，对现场施工方案的优化起到了重要的作用。同时，并对联拱隧道的防排水技术措施作了分析，提出了合理的建议。 武汉理工大学硕士学位论文 根据本课题的研究，提出了一些结论与建议，保证了隧道施工的安全性和结构稳定性。这些工作不仅为襄十高速公路联拱隧道的顺利建成起到了重要的指导作用，还将对同类联拱隧道的建设具有一定的借鉴作用，提高了联拱隧道的施工水平。更多还原

【Abstract】 Highway in our country has being built for near 20 years, which has certainly come into being scales and even has the t development endency from plain to mountain areas. And the building of highway in a mountainous area is hard to avoid constructing’ tunnel projects because of the demand of design and the limitation of terrain. For short tunnel diffilut to lay wire, it was a kind of effective means to adopt the form of unite arch tunnel. And now unite arch tunnels have been constructed in many highways. The study of construction technics has drew more and more attention of the design, construction and scientific research unit.Unite arch tunnel has its own characteristics which include short tunnel, fleet bury depth and bad surrounding rocks arouses landslide easily in construction. Especially New Austrian Tunneling Method(NATM) construction has sometimes been adopted in highway tunnel project, which has been applied only 20 years in our country, and people are probing into and practicing it. Furthermore tunnel structure commonly is designed by analogy method. On design, often, normally in view of safe consideration, adopt the method that reduction surrounds rock classification and uses fussy construction technology. So as soon as coming, engineering investment is certainly increased and construction project time is prolonged. Therefore how to use reasonable construction method and construct safely and economicly unite arch tunnel gets the universal solicitude of engineering technician. Meanwhile the demand of tunnel information construction research is increasingly emerging.This paper sets forth and analyzes the construction method and technics of uniting arch tunnel by introducing Xiang-shi highway unite arch tunnel project. On the base of introduction of highway tunnel areal geology condition and unite tunnel design, the programme of unite arch tunnel construction is theoretically calculated and analyzed. The tunnel construction course was simulatly calculated by adopting plane elasticity theory and exercising 2D- 6 the FEM analysis system of civil engineering,which mainly analyses the condition of surroundings, deformed condition and the stress distribution condition of rock protect with lining build get force condition and deformed condition. And then according to every process of tunnel construction, simulated analysis is carried out. By combining with monitoring and instrumentation of surround rock periphery displacement and the face of land to sink, surround rock with spray laminating force, surround rock body internal displacement, anchor rod axle force and protect and lining build strength, we have carried out scientific analysis and synthesis judgement of the stability of tunnel wall rock and the security of timbering structure. The parallel ananlysis between calculate results and construction project which offers scientific basis and the optimization of the programme of construction on-the-spot takes important roles. Meanwhile, it analyses waterproof and drainage technic of unite arch tunnel and puts forward reasonable suggestions.According to the research of this program, I have put forward some conclusion and suggestion which ensures tunnel constructional security and structural stability. This result not only has established important guidance role for smoothly accomplishing Xiang-shi highway unite arch tunnel, but will still has certain reference to similar unite arch tunnel construction and will improve the construction level of arch tunnel.更多还原