公路隧道结构破损原因及加固效果分析

发布时间：2018-03-19 21:10

  本文选题：公路隧道　切入点：结构破损　出处：《贵州大学》2015年硕士论文　论文类型：学位论文

【摘要】：本论文依托贵州省科学技术基金项目《公路隧道结构破损修复加固研究》,阐述了当前我国在公路隧道结构破损修复加固方面的理论研究以及实践现状,公路隧道结构破损的特征、分类、检查方法,公路隧道结构破损的原因分析(外力、材质劣化、设计缺陷等),常见的公路隧道结构破损修复加固方法(注浆加固、防护网、喷射混凝土、锚杆加固、排水止水、套拱、增设仰拱、更换衬砌)等。本论文采用荷载结构法,应用有限元软件进行数值模拟分析。基于荷载结构计算模式,隧道衬砌结构破损模型主要有三种:衬砌厚度不足、衬砌背后脱空、材质劣化。本文仅针对公路隧道二次衬砌结构材质全局劣化这一结构模型进行模拟分析,对Ⅳ级、Ⅴ级围岩地质条件下深埋隧道二次衬砌,分别按其材质劣化0%(即无劣化)、20%、40%、60%、80%五种情况计算其内力,并结合相关规范进行安全性分析。
[Abstract]:Based on Guizhou Provincial Science and Technology Foundation project "Research on the repair and reinforcement of Highway Tunnel structure", this paper expounds the current theoretical research and practical situation of highway tunnel structure damage repair and reinforcement in China. The characteristics, classification, inspection methods of highway tunnel structure damage, the cause analysis of highway tunnel structure damage (external force, material deterioration, design defect, etc.), common road tunnel structure damage repair and reinforcement method (grouting reinforcement, protective net, etc.). Shotcrete, Anchor reinforcement, drainage sealing, Arch jacking, adding inverted Arch, replacing lining, etc. In this paper, the method of load structure and finite element software are used for numerical simulation and analysis. Based on the calculation model of load structure, There are three kinds of structural damage models of tunnel lining: the thickness of lining is insufficient, the lining is empty behind and the material is deteriorated. This paper only simulates and analyzes the global deterioration of the secondary lining structure material of highway tunnel, and evaluates the 鈪，

本文编号：1636015