Effect of Residual Deformation and Reinforcement on Double Column Bridge in Mined-out Area

Abstract

The residual deformation poses tremendous challenges to the safety of the newly built buildings and bridges in coal mined-out areas. In this paper, the residual deformation is predicted at the very beginning, followed by the investigation of the damages on the bridge piles due to the deformation. Multiple retrofitting and strengthening schemes are then proposed, including linking the piles with straining beams and increasing the cross sectional area of the cap beam. After that the optimized scheme is determined through FEM simulation.