Analytical Solution of Mechanical Response in Large Diameter Ring Structure Considering Shear Effect

The adjacent engineering construction will cause the underground structure not only the bending deformation but also the shear deformation. Focusing on the shear deformation after the deflection of the circumferential section, ring structure is assumed to be homogeneous isotropic elastic, and a series of analytical solutions of bending stress, shear stress, shear force, axial force, and bending moment of the ring structure under the concentrated load are derived. The analytical solution of the ring structure is verified by the monitored data of the engineering case that the pile foundation pressed the tunnel structure. Taking the Chunfeng Tunnel as an example for parameter analysis shows that the ring structure has a significant shear effect under the action of concentrated load. The shear force increment of the ring structure is greater when it is closer to the load point. The analytical solution in this paper can provide a theoretical basis for the calculation and performance evaluation of ring structures such as tunnels.