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对微型桩群与锚索地梁加固堆积层滑坡的加固效果和桩群的受力特征进行了原位监测试验研究。试验过程中采集了桩侧土压力、桩身弯曲应力、锚索预应力以及坡体深孔位移,分析了微型桩的受力、桩侧土压力的分布特征,并根据锚索预应力的长期损失规律和典型位置的时间—位移曲线,评价了加固效果。试验结果表明,轻型支挡综合处治措施完工后,预应力损失量及坡体变形速率呈收敛态势;桩群内部各排桩侧土压力值的增减存在一致性,体现出微型桩群的整体抗滑机制。监测结论对于类似边坡工程加固方案设计具有参考意义。
The in-situ monitoring test on the reinforcement effect of the pile group and the anchored cable-girder reinforcement stratum landslide and the stress characteristics of the pile group are carried out. During the test, the earth pressure on pile side, the bending stress of pile, the prestressing force of anchor cable and the displacement of deep hole in slope were collected. The distribution characteristics of the stress of micro-piles and earth pressure on piles were analyzed. According to the long- The law of loss and the time-displacement curve of the typical location, and evaluated the reinforcement effect. The experimental results show that the prestressed loss and slope deformation rate are in a convergence state after the completion of the light support and comprehensive treatment measures. The increase and decrease of the earth pressure on the lateral sides of the pile group are consistent, Anti-slip mechanism. The conclusion of monitoring is of reference significance for the design of similar slope engineering reinforcement scheme.