边坡下推力对边坡桥梁桩基土压力分布规律的影响研究

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中图分类号：TP391.92；TQ178 文献标志码：A

文章编号：1001-5922（2025）06-0155-05

Research on the influence of slope downward thrust on the distribution law of earth pressure in slope bridge pile foundations

YANG Lijie1，OU Jiancong1，ZHU Shanying1，ZHOU Shufen2 （1. Guangxi Communications Design Group Co.，Ltd.，Nanning 530029，China； 2. Nanchang Institute of Technology，Nanchang 330099，China）

Abstract：To study the influence law of the downward thrust of the slope on the pile foundation of the slope bridge， this paper relies on a certain bridge project in the mountainous area of southwest China. Through indoor model tests， the influence of the downward thrust of the slope on the pile foundation of the bridge is systematically studied. The interaction mechanism between the bridge foundation and the anti-slide pile is revealed from the perspectives of earth pressure，bending moment and deformation. The results of data simulation experiments show that：（1）The lower thrust of the slope is mainly borne by the leftmost bridge pile foundation. When the load is transmitted to the rightmost side，the soil pressure of the pile foundation will produce a more obvious' attenuation effect'.（2）The earth pressure of bridge pile foundation and anti-slide pile is almost 0 kPa near the sliding surface， and the bending moment has a maximum value near the sliding surface.（3）The maximum horizontal displacement occurs at the top of the bridge pile foundation，and the horizontal displacement of the anti-slide pile is small.（4）The effect of an⁃ ti-slide pile on improving the stress and deformation of bridge pile foundation is limited. The research results can provide scientific basis and technical support for the design and construction of slope bridge engineering.

Key words：slope；bridge pile foundation；model test；numerical calculation

近年来，随着城市化进程的加快和交通基础设施的快速发展，边坡桥梁工程作为城市交通建设的重要组成部分，受到了广泛关注[1-3]。（剩余5323字）