Abstract:

Wushaoling tunnel goes through the northeast high mountainous area of Qilian mountain, where the elevation rises to 2900～3600 meters above sea level. The concrete for the tunnel is under the environment of open air without moistdry alternations, longterm humid conditions and frost thawing deteriorating conditions. The concrete used should be freeze proof, leakage proof, split proof, deterioration proof and should have good rebar protection capability. The concrete is different from common concrete in respect of technical indexes and service life. The article expounds the essential of the structural design and construction of the durable concrete lining on basis of construction of Wushaoling tunnel.

Key words:  , superlong tunnellining structuredurabilitydesign and construction