基于SASW法的隧道衬砌状态评估研究  

Study on Evaluation of Tunnel Lining Condition Based on SASW Method

作　　者：苏国锋 于鹏程 熊洪强 金洲 SU Guofeng;YU Pengcheng;XIONG Hongqiang;JIN Zhou(Southwest Jiaotong University Research Institute(Chengdu)Co.Ltd.,Chengdu Sichuan 610031,China;Beijing-Shenyang Railway Passenger Dedicated Line(Liaoning)Co.Ltd.,Shenyang Liaoning 110006,China)

机构地区：[1]成都西南交大研究院有限公司,四川成都610031 [2]京沈铁路客运专线辽宁有限责任公司,辽宁沈阳110006

出　　处：《铁道建筑技术》2022年第5期6-8,19,共4页Railway Construction Technology

基　　金：四川省科技计划项目(2018GZ0043);中国铁路沈阳局集团有限公司科技研究开发计划项目(2020G08)。

摘　　要：为了安全地建造和运营地下结构,必须定期评估结构的健康状态来进行养护维修。探索性地运用表面波法SASW(Spectral Analysis of Surface Wave Method)频散理论评估隧道衬砌状态,通过室外混凝土衬砌模型多工况试验和隧道整体模型SASW测试,基于Windows tfs的SASW法通过数据收集、数据整合处理及解译,提取不同试验工况下混凝土衬砌不同深度层的剪切波速度和强度变化情况,从而实现SASW法对隧道衬砌状态的评估研究。结果表明:SASW法可较准确获取衬砌厚度以及内部裂缝、衬砌强度变化导致的衬砌劣化等缺陷,该方法用于评估衬砌健康状态具有可靠性,可为隧道养护维修提供参考。In order to safely construct and operate underground structures,the health conditions of the structures must be regularly assessed.In this paper,using the dispersion theory of Spectral Analysis of Surface Wave Method,through the outdoor concrete lining model multi-condition test and the tunnel overall model SASW test,based on the Windows tfs’data collection,data analysis and processing method to extract the different depth of concrete lining layer under different conditions of shear wave velocity and strength changes,thus to achieve the SASW method to evaluate the state of the tunnel lining.The results show that SASW method can accurately obtain the lining thickness and defects such as internal cracks and lining deterioration caused by changes in lining strength.This method is effective in evaluating the health state of lining and can provide reference for the maintenance and repair of tunnel.

关 键 词：SASW理论 隧道衬砌 结构完整性评估 无损检测 

分 类 号：U456.3[建筑科学—桥梁与隧道工程]