Abstract：The highway tunnel is rapidly growth in China recently, at the same time the emergence of tunnel diseases and defects, including lining cracks and leakage problems are very prominent, there are similar problems in a lot of tunnel. In this paper, according with the project,the stress distribution laws with different position lining crack were analyzed and studied.Discussed the effects of cracks on the safety of tunnel structure. The conclusions are as follows: (1) The tunnel structure become multi hinge ring structure when the concrete tunnel lining contains through cracks, the ability of axial bearing is no obvious change in the structure fracture, but can not continue to bear the moment| (2) The results show that the fracture structure somewhere and not continue to bear the moment when the whole stress distribution will change, in other local will have a greater bending moment, thereby inducing new cracking| (3) The existence of cracks by the stress and deformation of tunnel surrounding rock mass has great influence, the existence of cracks changed the existing tunnel mechanics distribution. In the process of tunnel operation, it is necessary to strengthen the monitoring and control the development of cracks when cracks are found.
余晶. 公路隧道衬砌裂缝对结构受力分布影响规律研究[J]. 土木工程学报, 2017, 50(S1): 70-75.
Yu Jing. Study on the influence of stress distribution law by lining crack in highway tunnel. 土木工程学报, 2017, 50(S1): 70-75.
