The Optimization Design Analysis of Loukouni Bridge in the Republic of Congo

Loukouni bridge is a deck type arch bridge with box section which is a part from the second stage of the 1st national road project of the Republic of Congo. This paper focuses on the optimization design analysis of the Loukouni bridge to make it more economical and reliable. The optimization analysis is implemented by ANSYS and contains two parts. One part focuses on the whole shape of the arch and try to optimize the arch axial coefficient. The other part considers the optimization of the size of the box section. The analysis results could provide useful suggestions for the design of Loukouni bridge and related steel arch bridges.