Study on the Anti-slip Mechanism of Pile-anchor Composite Support Structure for Rock Slopes
The combination support structure of anti-slip piles and prestressed anchor cables on the slope can effectively improve the stability of cutting slopes due to its good reinforcement effect.Based on a cer-tain highway slope project,a pile-anchor composite support structure is designed,and a stress monitoring system for the support structure is established in this paper.The stress development process of anti-slip piles and prestressed anchor cables are examined,and then the anti-slip mechanism of the pile-anchor composite support structure is summarized.The results show that:①There is a significant time effect in the composite support structure of anti-slip piles and prestressed anchor cables,with internal stress condi-tions gradually stabilizing over time.②Pre-stressed anchor cables play a role before anti-slide piles,making timely support after excavation crucial.③The stability period of the support structure is about 6 months.After the slope reinforcement is completed,dynamic and continuous monitoring work should be strengthened.
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