岩溶区公路隧道土建结构DERU检测评估技术研究

Study on DERU Testing and Evaluation Technology for Civil Structures of Highway Tunnels in Karst Areas

岩溶区营运公路隧道土建结构的检查与维护工作对于保障隧道安全运营具有重要意义。通过调研统计广西中西部5条高速公路岩溶区隧道案例的病害特征,分析了隧道养护工作的需求,并基于DERU法构建了公路隧道土建结构检测评估体系。该评估体系以衬砌、路面、排水系统作为隧道构件评估指标,以D、E、R、U值来计算隧道结构技术状况指标值。在此基础上开发了一套适用的检测系统,并结合实际工程案例进行了应用。

The inspection and maintenance of the civil structure of operating highway tunnels in karst areas is of great significance for ensuring the safe operation of tunnels.By conducting investigation and statistical research on the defect characteristics of a group of tunnel cases in karst areas of Guangxi,and analyzing the needs of tunnel maintenance work,a highway tunnel civil structure inspection and evaluation system was constructed based on the DERU method.The lining,pavement,and drainage system are regarded as evaluation indicators for tunnel compo⁃nents,and the technical condition index values of tunnel structures are calculated by using D,E,R,and U values.On this basis,a suitable detection system was developed and applied in conjunction with practical engineering cases.