弃土场对桥梁下部结构安全性的影响分析

Analysis of the influence of soil dump on the safety of bridge substructure

弃土场固结和变形常引起桥梁桩基负摩阻力和剪切力。当桩基随弃土场滑移时,桥梁可能会出现偏移和挤压。指出对于建设在弃土场的桥梁,应采取分级卸载弃土和桩周土进行注浆加固的措施,以消除弃土场变形对桥梁安全影响。

The consolidation and deformation of the spoil ground often cause the negative frictional resistance and shearing force of the bridge pile foundation. When the pile foundation slips with the spoil, the bridge may be deflected and squeezed. For the bridges constructed in the spoil ground, the measures of graded unloading of spoil and grouting reinforcement around the pile are adopted to eliminate the impact of spoil ground deformation on the safety of the bridge.