根据混凝土结构中氯离子引起钢筋腐蚀的机理建立了极限状态,并引用国际上先进的设计理念和方法-PRSLD框架,对沿海某地下行车隧道混凝土结构的使用寿命进行了预测分析。在考虑外渗漏作用下,地道混凝土结构的计算寿命低于其设计寿命。这表明在滨海环境作用下,渗漏是引起氯离子侵蚀的主要途径。
Under the coastal environment,the reinforcement corrosion of tunnel massive concrete construction caused by chloride erosion will reduce the service life.In this paper,we introduce the advanced PRSLD framework to establish the ultimate state and predict the service time of the tunnel of Hong Kong-Shenzhen Western Corridor.The results show that Chloride corrosion caused by outside walls leakage will reduce the designed life of the tunnel structure.