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边坡预应力锚索加固技术已经得到广泛应用,但对锚索的预应力变化规律还缺乏系统深入的研究,特别是边坡锚固后,锚索预应力的损失情况还缺乏系统全面的认识。本文通过对工程边坡锚索预应力变化的系统监测和资料分析,探讨了边坡锚索预应力的锁定损失及锁定后预应力的变化规律,分析了雨季对锚索预应力变化的影响,同时还分析了二次张拉对提高锚索预应力及减少锚索预应力下降的速率的作用,揭示了边坡锚索预应力变化的基本规律。
The technology of slope prestressed anchor cable reinforcement has been widely used, but there is no systematic and thorough research on the variation of prestressing force of anchor cable. Especially, the loss of prestressed anchor cable also lacks a systematic and comprehensive understanding after the slope is anchored. In this paper, through systematic monitoring and data analysis of the prestressing changes of the slope, this paper discusses the locking loss of the prestressed anchor cable and the changing law of the post-locking prestress, analyzes the influence of the rainy season on the prestressing force of the anchor cable, At the same time, the effect of secondary tensioning on increasing the prestressing force of the prestressed cable and reducing the rate of prestressing of the prestressed cable is also analyzed. The basic law of the prestressing force of the prestressed cable on the slope is also revealed.