综合监测手段在营运高速公路隧道质量评估中的应用

Application of Comprehensive Monitoring Method in Quality Assessment of Operating Expressway Tunnel

监测是评估在建、营运公路隧道质量的重要方法,然而单一的监测方法只能反映隧道断面某一参数的变化特征,鉴于公路隧道断面大、结构受力的复杂性,采用综合监测方法对全面掌握衬砌的力学特征具有重要意义。以广昆高速公路CLD隧道LK124+510^+522区段为例,对该模衬砌的断面变形、二衬应力应变和衬砌裂缝宽度参数进行监测,以客观有效地评价该隧道的稳定性,为隧道养护工作提供指导。

Monitoring is an important measure to evaluate quality of highway tunnels under construction and operation.However,a single monitoring method can only reflect variation characteristics of a certain parameter of tunnel section.In view of the large section of highway tunnel and complexity of the structural force,it is of great significance to master the mechanical characteristics of lining by carrying out comprehensive monitoring method.Taking CLD Tunnel Section LK124+510.0~522.0 of Guangkun Expressway as an example,the section deformation,stress strain and lining crack width parameters have been monitored to objectively and effectively evaluate the stability of tunnel quality which could provide guidance for tunnel maintenance work.