公路隧道初步设计毕业设计.doc

柳林镇公路隧道初步设计
摘要
交通是国家基础建设的重要的设施,在国民经济中占有十分重要的地位。近年来随着我国社会经济快速发展,使得人们对交通设施建设的标准也越来越来高,在道路的修建中也越来越来重视行车的舒适性和环保,同时也要求提高其抵抗灾害的能力。针对交通需求的高涨,解决好路面交通的规划和修建,是目前急需研究的课题之一。而隧道是交通线上重要的组成部分,它被广泛地应用于公路、铁路、矿山、水利、市政和国防等方面。随着现代化高速公路的发展,它在公路工程中的作用和地位日益重要。它对优化道路线形、缩短公路里程有重大影响,同时对促进周遍地区环境保护,景观美化,当地经济发展及国防建设也具有深远影响。
根据设计任务书所提供的资料,按照规范上的要求,确定隧道的几何线形和结构构造。柳林镇公路隧道长度为1725m,单面坡隧道,坡度为-%。隧道洞门采用翼墙式洞门,材料选用M10水泥砂浆砌片石。并以结构力学与岩体力学为基础,结合工程实践进行隧道衬砌结构设计计算。隧道衬砌采用复合式衬砌,隧道初期支护采用锚喷支护,二次衬砌采用模筑混凝土或模筑钢筋混凝土,衬砌断面采用三心圆曲墙式衬砌,仰拱厚度与拱墙厚度相等。为确保运营安全,以《公路隧道通风照明设计规范》(JTJ -1999)为依据,进行隧道通风设计计算并采用利用系数法进行照明验算。通风方式采用1120射流风机,按9组布置两侧对称布置,从洞口213m开始布置,间距为168m。隧道照明划分为入口段、过渡段、中间段、和出口段五个部分,并采用水泥混凝土路面进行照明设计。
关键词:隧道、衬砌、通风、照明、结构计算
Preliminary Design of Liu Lin Zhen Tunnel
Abstract
Transportation is one of the important of national infrastructure facilities, occupies an important position in national recent years, along with our country social economy rapid development, makes the standards for the construction of transport infrastructure is ing more and more high,On the building of the road is also more and more to pay attention to fort and environmental protection, but also improve its ability to resist disasters view of the high traffic demand, to solve the road traffic planning and construction, now is an urgent need to study the tunnel is an important part of traffic line, it is widely used in highway, railway, mining,To optimize the road alignment, shorten the highway mileage has significant impact;At the same time to promote the neighboring areas of environmental protection, landscaping, local economic development and national defense construction also has profound influence.
According to the information provided by the design specification, in accordance with the specification requirements, determine the geometry and structure of the town highway tunnel length is 1725 m, the single side slope and tunnel slope of %.The tunnel wall David, David used to M10 ce