高速铁路隧道结构动力累积损伤机理与控制方法研究

项目名称： 高速铁路隧道结构动力累积损伤机理与控制方法研究

项目编号： No.51278121

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 王祥秋

作者单位： 佛山科学技术学院

项目金额： 76万元

中文摘要： 针对我国高速铁路隧道设计与运营安全存在的关键技术问题开展研究。通过高速铁路隧道动力响应现场测试以及整体道床-衬砌结构-隧道围岩动力相互作用相似材料模型试验，应用小波分析方法与智能声波检测技术获取高速列车振动荷载特性以及高速铁路隧道衬砌结构累积损伤特征。基于混凝土弹塑性损伤理论，引入混凝土材料拉、压动力损伤变量，构建可综合考虑隧道初始损伤与高速列车振动荷载长期作用下的隧道衬砌结构二次损伤动力本构模型；并基于Miner非线性累积损伤理论，推导高速铁路隧道衬砌结构动力累积损伤演化方程。基于Ansys数值分析软件开发高速铁路隧道衬砌结构动力损伤程序模块，研究探讨高速铁路隧道衬砌结构动力累积损伤机理，提出高速铁路隧道衬砌结构动力累积损伤控制理论与方法，从而为完善高速铁路隧道结构设计理论与方法，提高高速铁路隧道长期运营安全提供重要的理论与实验研究基础。

中文关键词： 高速铁路隧道；累积损伤；现场测试；模型实验；数值模拟

英文摘要： This project aims to study on the key technical problems on the design and operating safety of high-speed railway's tunnel. Through the field test of dynamic response of high-speed railway tunnel and the similar material's test to simulate the dynamic interaction among the monolithic track bed, tunnel's lining and surrounding rock of tunnel. Applying wavelet transforming methods and intelligent acoustic detection technologies to obtain the high-speed train vibrating characteristics and the cumulative damage characteristics of lining structure of high- speed railway's tunnel. Based on the elastoplastic damage constitutive models of concrete, and introducing dynamic damage variable of material's tensile and compressive properties, to establish a dynamic damage constitutive model that it can simulate the initial damage duo to the tunnel's construction and the secondary damage induced by the vibration of high -speed train on the lining structure of tunnel;And based on the Miner non-linear theory of cumulative damage, the accumulated damage evoluting equation will be derived out for the lining structure of high -speed railway's tunnel. On the basis of Ansys software,the dynamic damage program module of numerical analysis will be developped out for the lining structure of tunnel. And then, the mechanism of dynamic cu

英文关键词： tunnel of high-speed railway；cumulative damage；field test；model test；numerical simulation