王小元, 施晓文, 胡继华. 2017: 某核电厂边坡锚索预应力损失影响因素及对策分析. 工程地质学报, 25(s1): 261-265. DOI: 10.13544/j.cnki.jeg.2017.s1.042
    引用本文: 王小元, 施晓文, 胡继华. 2017: 某核电厂边坡锚索预应力损失影响因素及对策分析. 工程地质学报, 25(s1): 261-265. DOI: 10.13544/j.cnki.jeg.2017.s1.042
    WANG Xiaoyuan, SHI Xiaowen, HU Jihua. 2017: ANALYSIS ON INFLUENCING FACTORS AND COUNTERMEASURES OF PRE-STRESS LOSS OF ANCHOR CABLE IN SLOPES AT ONE NUCLEAR POWER PLANT. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 261-265. DOI: 10.13544/j.cnki.jeg.2017.s1.042
    Citation: WANG Xiaoyuan, SHI Xiaowen, HU Jihua. 2017: ANALYSIS ON INFLUENCING FACTORS AND COUNTERMEASURES OF PRE-STRESS LOSS OF ANCHOR CABLE IN SLOPES AT ONE NUCLEAR POWER PLANT. JOURNAL OF ENGINEERING GEOLOGY, 25(s1): 261-265. DOI: 10.13544/j.cnki.jeg.2017.s1.042

    某核电厂边坡锚索预应力损失影响因素及对策分析

    ANALYSIS ON INFLUENCING FACTORS AND COUNTERMEASURES OF PRE-STRESS LOSS OF ANCHOR CABLE IN SLOPES AT ONE NUCLEAR POWER PLANT

    • 摘要: 预应力锚索的预应力损失是造成锚索失效的关键问题。锚索预应力损失是不可避免的,但是可以采取措施保证锚索有效预应力。本文利用锚索监测数据、边坡变形监测等资料,得出其锚索预应力变化规律,分析锚索预应力变化的影响因素及其影响程度。研究表明,锚索预应力损失最快的阶段发生在锚索张拉后的十几天内;可以采取优化措施以保证锚索初始的有效预应力;已产生变形的坡体进行锚索加固,其预应力快速降低段持续的时间较长。

       

      Abstract: Anchor cable failure is mainly caused by pre-stressed anchor cable's pre-stressing loss. Prestress loss is ineluctability, but it could be taken measures to ensure the effect of the anchor cable prestress. This paper analyzed the rule of pre-stress changing, the factors that make the anchor cable's pre-stress changing and also the impact on the pre-stress changing by means of anchor cable's monitoring data and slope deformation monitoring data. The results show that the fastest stage of pre-stress loss occurred in a period of time after anchor cable tension; optimization measures can be used to ensure the initial effective pre-stress; the period of pre-stress quickly reduce continuous long time in slope reinforcement with anchor acble.

       

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