Defects Inspection and Cause Analysis of Six Tunnels in Chongqing

Abstract

This paper presents defects inspection and cause analysis of six road tunnels in Chongqing based on information of construction, operation and maintenance, defects property and related factors. The unfavorable factors including ground disturbance and load nearby, complex structure form, construction deformation that threaten the safety of tunnel structure and operation are thoroughly analyzed. Based on the discussion and analysis recommendation and suggestion on measures of urban tunnel maintenance and management are carried out. Experience gained is helpful for future urban road tunnel maintenance and management.