Experimental study on static behavior of road tunnel lining

摘要

The proper design method for tunnel lining should be proposed considering mechanical characteristic for the purpose of reducing construction cost and improving safety of tunnel structure. The loading experiment and the analysis, which accounted for the development process of cracks on the basis of the experimental results, were carried out to grasp mechanical characteristic and to examine the structural strength of lining. It was shown that the structural strength was improved by adopting steel fiber reinforced concrete for the lining under the load condition that dominated the effect of bending moment, and that safety of tunnel structure was improved due to preventing the falling of concrete debris under every load condition.