钢管混凝土拱桥拱台设计浅析

本文以某钢管混凝土拱桥的拱台为背景，介绍拱台基底承载力和偏心距验算、稳定性验算的基本方法。拱桥由于拱台存在水平力作用，使得拱桥基础的稳定性验算成为基础设计中的重要环节，本桥在设计时出现拱台抗滑动稳定性不满足规范要求，通过在拱台台底设置突榫，利用突榫前在基底压力作用下土体水平方向的承载力，提高拱台的抗滑动性能，通过有限元仿真分析，使设计方法得到有效验证，并提出了相应的构造措施，确保桥梁的使用安全。

On Concrete Filled Steel Tubular Arch Bridge Design

The article on the basic of the study on the arch abutment of a concrete filled steel tubular arch bridge, introduces the bearing capacity of arched basement and stability checking methods. Arch bridges due to horizontal force arch, makes arch bridge based on stability checking become one of the important links of foundation design. There was an arch bridge design platform anti-sliding stability that did not meet regulatory requirements. By setting the outburst at the end of arch abutment mortise, to use mortise in the basement before bursting pressure bearing capacity of soil under the action of horizontal to improve anti- sliding performance of arch. By finite elements simulation analysis, this article presents relevant issues and countermeasures for arch bridge basement design.