桥下回填不仅将引发桥梁墩柱发生侧向位移,也会导致墩柱产生附加内力,对运营期桥梁的安全使用将产生极为不利的影响。该文旨在分析相关不利因素,针对具体工程,对回填荷载所引发桥梁墩柱结构的受力问题与工作性状进行力学分析,并提出确保既有墩柱结构安全的回填工程施工技术对策和工艺要求。 Under-bridge backfill will not only cause lateral displacement of bridge pier, but also lead to additional internal forces of pier, which will have a very adverse impact on the safe use of bridge during operation. This paper aims to analyze the related unfavorable factors, and according to the specific engineering, mechanics analysis on the stress of bridge pier structure caused by the backfill load and the working characters is made, and the construction technology countermeasures and technology of the backfill engineering to ensure the safety of existing pier columns are proposed Claim.