针对无桥台斜腿刚架桥与路堤填土相互作用问题,采用Winkler地基,建立二维计算模型来分析土压力对该桥型结构的力学性能的影响规律。在此基础上,进一步建立三维实体模型,对该问题进行弹塑性分析,得到了土压力的大小与分布以及对该桥型应力状态的影响范围,从而为该桥型的设计与计算提供了有重要参考价值的科研依据。 Aiming at the problem of the interaction between the bridge without bridge abutment and the embankment, Winkler foundation is used to establish a two-dimensional model to analyze the influence of earth pressure on the mechanical properties of the bridge structure. On this basis, the three-dimensional solid model is further established, the elasto-plastic analysis of the problem is carried out, the size and distribution of earth pressure and the influence range of the stress state of the bridge are obtained, which provides the design and calculation of the bridge type Important reference value of the scientific basis.