Abstract:On the basis of existing research, for the structure of open-cut underground roads, the structural reinforcement design is discussed from the aspects of rigid zone, peak clipping, haunch, axial force, structural cavity, etc., and multiple models are established for comparative analysis. The results show that in the design of the underground road structure, the beneficial effect of the haunch on the internal force and reinforcement of the structure should be considered, so as to greatly reduce the amount of steel bars and the cost. When the local road cover is thick, structural cavities should be added to the municipal infrastructure around the structure to save underground space resources and greatly reduce the project cost.