岩体性质对锚索预应力损失影响的灰色关联度分析

发布时间：2018-05-04 02:07

本文选题：预应力损失 + 灰色理论　；参考：《地下空间与工程学报》2015年S2期

【摘要】：锚索预应力损失问题关系到锚固工程的自身安全和耐久性,是锚固技术的关键问题之一。因此采用合理的降低预应力损失的工程措施,尽量减少预应力损失,遏制锚固性能的减弱或失败,避免给工程带来极大的危害,保障人民生命财产的安全,是预应力锚索工程的设计与施工必须考虑的问题。本文结合现有文献对锚索预应力损失的研究成果,对锚索桩板墙锚索预应力的锁定损失、填土对锚索预应力的影响、锁定后预应力的变化规律以及暴雨对预应力的影响进行了较详细的分析;通过理论计算确定了预应力损失的主要因素;运用灰色理论模型对锚索桩板墙锁定后前期预应力变化及后期预应力损失进行了趋势性分析预测。
[Abstract]:The problem of cable prestress loss is one of the key problems in anchoring technology, which is related to the safety and durability of anchoring engineering. Therefore, adopting reasonable engineering measures to reduce the loss of prestress, to reduce the loss of prestress as much as possible, to curb the weakening or failure of anchoring performance, to avoid great harm to the project, and to ensure the safety of people's life and property. It is a problem that must be considered in the design and construction of prestressed Anchorage cable engineering. In this paper, based on the research results of the existing literature on the prestressing loss of anchor cable, the locking loss of anchor cable prestress of anchor cable pile and slab wall, and the influence of soil filling on anchor cable prestress are discussed in this paper. The variation law of prestress after locking and the influence of rainstorm on prestress are analyzed in detail, and the main factors of prestress loss are determined by theoretical calculation. Based on the grey theory model, the trend analysis and prediction of the pre-stress change and the post-prestress loss after the locking of anchor cable pile and slab wall are carried out.
【作者单位】：中国市政工程西南设计研究总院;中铁西北科学研究院有限公司;西南交通大学;
【分类号】：TU45

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