公路隧道火灾后衬砌结构安全评价及修复技术研究
发布时间：2018-11-23 08:12
【摘要】：随着我国经济的快速发展,目前已建成和在建一大批特长公路隧道。在隧道运营过程中,不可避免的会出现一些火灾事故,往往造成重大的人员伤亡和财产损失,其中以油罐车的碰撞起火危害最为严重。国内对火灾后公路隧道衬砌结构安全评价和火灾后对隧道衬砌的快速修复研究方面起步较晚,因此本文以长大公路隧道火灾为研究对象,依托甘肃新七道梁隧道火灾项目,主要针对以下几个方面进行研究:1.对依托工程新七道梁隧道火灾情况进行详细介绍,总结归纳了国内外隧道火灾资料及研究现状、隧道可靠度研究原理。利用ANSYS软件,在PDS模块选出最适宜本论文的可靠度研究方法,即蒙特卡洛法(Monte Carlo);2.利用现场勘测法,通过回弹法、断面检测法、钻芯取样法等对新七道梁隧道进行初步损伤评价;3.选出两个随机参数分九个工况,运用拉丁抽样法对参数抽样2000次,对火灾后公路隧道衬砌的可靠概率和失效概率进行安全评价,之后对各随机参数的抽样过程、分布特性、分布函数、对整体结构可靠度的敏感性、之间的相关性等进行研究,并得出相关结论;4.总结国内外混凝土材料受火后的特性,混凝土最新修复加固方法,针对新七道梁隧道提出三种加固方法,并对其衬砌结构可靠度进行研究,最后给出其它附属设施的维修方案。
[Abstract]:With the rapid development of economy in China, a large number of long highway tunnels have been built and are under construction. In the course of tunnel operation, some fire accidents will inevitably occur, which often cause heavy casualties and property losses, among which the collision of oil tanker fire is the most serious. In China, the safety evaluation of highway tunnel lining after fire and the research of rapid repair of tunnel lining after fire started relatively late, so this paper takes the fire of long highway tunnel as the research object and relies on the fire project of Xinqieliang tunnel in Gansu Province. Mainly focus on the following aspects of research: 1. This paper introduces the fire situation of the new Qiedaoliang tunnel in detail, summarizes the fire data and current research situation of the tunnel at home and abroad, and studies the principle of tunnel reliability. Using ANSYS software, select the most suitable reliability research method in PDS module, that is, Monte Carlo method (Monte Carlo); 2. In this paper, the preliminary damage evaluation of the tunnel is carried out by using the method of site survey, the method of springback, the method of section detection and the method of drilling core sampling. Two random parameters were selected to be divided into nine working conditions. The Latin sampling method was used to sample the parameters 2000 times. The reliability probability and failure probability of highway tunnel lining after fire were evaluated, and then the sampling process and distribution characteristics of each random parameter were analyzed. Distribution function, the sensitivity of the reliability of the whole structure, the correlation between the study, and draw relevant conclusions; 4. This paper summarizes the characteristics of concrete materials at home and abroad after fire, the latest concrete repair and reinforcement methods, puts forward three reinforcement methods for the new seven-track beam tunnel, studies the reliability of the lining structure, and finally gives the maintenance scheme of other ancillary facilities.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U451.4
本文编号：2350882
[Abstract]:With the rapid development of economy in China, a large number of long highway tunnels have been built and are under construction. In the course of tunnel operation, some fire accidents will inevitably occur, which often cause heavy casualties and property losses, among which the collision of oil tanker fire is the most serious. In China, the safety evaluation of highway tunnel lining after fire and the research of rapid repair of tunnel lining after fire started relatively late, so this paper takes the fire of long highway tunnel as the research object and relies on the fire project of Xinqieliang tunnel in Gansu Province. Mainly focus on the following aspects of research: 1. This paper introduces the fire situation of the new Qiedaoliang tunnel in detail, summarizes the fire data and current research situation of the tunnel at home and abroad, and studies the principle of tunnel reliability. Using ANSYS software, select the most suitable reliability research method in PDS module, that is, Monte Carlo method (Monte Carlo); 2. In this paper, the preliminary damage evaluation of the tunnel is carried out by using the method of site survey, the method of springback, the method of section detection and the method of drilling core sampling. Two random parameters were selected to be divided into nine working conditions. The Latin sampling method was used to sample the parameters 2000 times. The reliability probability and failure probability of highway tunnel lining after fire were evaluated, and then the sampling process and distribution characteristics of each random parameter were analyzed. Distribution function, the sensitivity of the reliability of the whole structure, the correlation between the study, and draw relevant conclusions; 4. This paper summarizes the characteristics of concrete materials at home and abroad after fire, the latest concrete repair and reinforcement methods, puts forward three reinforcement methods for the new seven-track beam tunnel, studies the reliability of the lining structure, and finally gives the maintenance scheme of other ancillary facilities.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U451.4
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