Abstract: Taking the prefabricated construction section of the Hunnan New Development Area utility tunnel construction in Shenyang， China as research background， the numerical simulations of structural deformation and stress distribution of single precast rectangle box culvert at different burial depths were carried out through the general finite element analysis software ABAQUS. In order to modeling the actual stress of the precast rectangle box culvert as accurately as possible， the reinforcement was carried out according to the actual engineering application. This model simulated the different buried depths by changing the load of roof and side wall， where a uniform pressure was loaded on the roof and the lateral pressure varied linearly was loaded on the side wall. Finally this paper analyzed the structural deformation and stress distribution of precast rectangle box culvert at different buried depths， pointing out the existing structural safety problems and potential failure modes， to provide a theoretical reference for the design and construction of utility tunnel engineering.

Key words: precast rectangle box culvert, roof, side wall, structural deformation, concentration of stress