八一大桥独柱墩抗倾覆加固方案分析

摘要:

本文以南昌市八一大桥独柱墩抗倾覆加固工程为背景，结合现行规范中的抗倾覆要求，针对现状八一大桥南北立交独柱墩桥梁提出可行的抗倾覆加固设计方案，并对加固方案进行综合比选，考虑多种因素后选取了增设桩基、外包墩柱以及加盖梁的方案。同时本文对曲线桥C线桥第三段进行抗倾覆验算，考虑多种因素并根据计算选取了合适的加固墩位置，最终计算结果表明桥梁抗倾覆加固后满足要求，本文关于加固方案的比选以及桥梁加固墩位置的思考，可为相关桥梁抗倾覆加固设计方案提供参考。

Abstract:

Based on the background of the anti overturning reinforcement project of the single column pier of Bayi Bridge in Nanchang City, combined with the anti overturning requirements in the current specifications, this paper proposes a feasible anti overturning reinforcement design scheme for the existing single column pier bridge of the north-south interchange of Bayi Bridge, and conducts comprehensive comparison and selection of the reinforcement schemes. After considering various factors, the scheme of adding pile foundation, outsourcing pier columns and capping beams is selected. At the same time, this paper carries out anti overturning checking calculation for the third section of C line bridge of curved bridge, considers many factors and selects appropriate reinforcement pier position according to the calculation. The final calculation results show that the bridge meets the requirements after anti overturning reinforcement. The comparison and selection of reinforcement schemes and the consideration of bridge reinforcement pier position in this paper can provide reference for the design scheme of anti overturning reinforcement of related bridges.