Freezing Damage to Tunnels in Cold Regions and Weights of Influencing Factors

Concrete materials are widely used in tunnel engineering. In China, the cold regions have gradually become main area for highway and railway construction. Affected by high altitude, low temperature, turbulent wind, other conditions, freezing damage, such as icing, occurs concrete materials, which seriously affects quality operational safety of tunnels regions. Therefore, it is necessary to carry out a quantitative analysis various factors affecting damage protect tunnels. This paper summarizes phenomena divides them into three types: water seepage hanging ice type lining interface foundation accumulation damage. Based on qualitative evaluation each factor, affiliation factor was divided. Then, influence weight obtained through analytic hierarchy process, then ranked. study helpful selection anti-freezing measures