Finite Element Analysis of Unsymmetrical Pressure Treatment of Shallow-Buried Tunnel with Half-road and Half-tunnel

Abstract

Abstract Taking the Sajin tunnel project of T26 contract section of Du (Yun) An (Shun) Highway as an example, this paper analyzes the difficult problem of unsymmetrical pressure construction of the tunnel. This paper puts forward a systematic treatment scheme of setting anti slide pile as the main part, and compares and verifies the calculation model established by Midas SoilWorks software. The calculation results show that this method can effectively reduce the bending moment and deformation at the left arch waist of the tunnel. The minimum safety factor of the initial support structure of the tunnel is 1.36, which greatly reduces the construction risk. At the same time, the quality control of the treatment process of the project is analyzed, and the corresponding treatment suggestions are put forward, which can provide reference for similar highway tunnel engineering design and construction.