既有交通隧道衬砌裂损快速修补组合结构受力机理研究

项目名称： 既有交通隧道衬砌裂损快速修补组合结构受力机理研究

项目编号： No.51478392

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 龚伦

作者单位： 西南交通大学

项目金额： 83万元

中文摘要： 针对交通隧道大多是复合式衬砌结构的特点，在充分利用裂损衬砌残余能力的基础上，采用调查研究、工程类比、系统性室内实验、数值模拟及现场测试等方法，研究能对既有交通隧道裂损衬砌实现快速修补的组合结构，主要开展组合结构及其锚固件的受力机理和性能研究。把握组合结构的组合板、锚固件受力特性；选用满足相应力学性能和耐久性要求的高性能材料（如高分子、FRP、特种玻璃、轻质合金、镀锌钢板等）；确定组合结构的布置形式（环向条带式、纵横向网格式等）、组合板和高强短锚尺寸、锚固件布置和快速锚固方式等。使高性能组合板与裂损衬砌在锚固件作用下快速、长期有效连接，充分发挥组合结构各构件的性能优势，改善裂损衬砌的受力状态，提高修补后裂损衬砌的承载能力。通过研究形成多种能实现快速修补既有交通隧道衬砌裂损的组合结构，将研究成果在普速铁路隧道、公路隧道的病害整治工程中大量应用，并在高速铁路隧道的衬砌裂损修补中进行推广。

中文关键词： 既有交通隧道；衬砌裂损；快速修补；组合结构；受力机理

英文摘要： Most of the transportation tunnels are composite lining structure, based on investigation, project comparison, systematic indoor experiment, numerical simulation and site test, with the help of residue load competent, research on fast repair assembly structure for existing transportation tunnel is done. The study focuses on mechanical mechanism and performance of the assembly structure. Mechanical characteristic of assembly board, anchoring unit is studied. Preferably the new material that to be able to ensure the reliability and durability of the composite structure is selected, such as FRP, special glass, light alloy and galvanized steel sheet etc.. Meanwhile, the arrangement (hoop strip shape, verticle-transverse net shape), dimensions of assembly board and high intensity short anchor, the arrangement and rapid anchoring of anchor are established. With these functions, high intensity assembly board and lining cracking could be fast and effectively connected for a long period of time, thus mechanical advantages of the assembly structure could be fully used, and the mechanical statement of lining cracking could be changed and load competent is strengthened. The rapid repair assembly structure could be widely used in railway tunnel and road tunnel repair projects, furthermore, it could be promoted in the high speed railway tunnel.

英文关键词： Existed Transportation Tunnel;Lining Cracking;rapid repair;Assembly Structure;Mechanical Mechanism