Analysis of factors affected on load losses of high capacity and long rock anchors

ZHANG Fa-ming; Liu Ning; CHEN Zu-yu; ZHAO Wei-bing

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Analysis of factors affected on load losses of high capacity and long rock anchors

更新时间：2026-06-25

- Analysis of factors affected on load losses of high capacity and long rock anchors
- Vol. 24, Issue 2, (2003)
- 作者机构：
  
  1. 河海大学土木工程学院,江苏,南京,210098
  2. 中国水利水电科学研究院,北京,100044
  3. 南京水利科学研究院,江苏,南京,210024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU476
- Online First：19 August 2014，
  
  Published：2003
- 稿件说明：
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ZHANG Fa-ming, Liu Ning, CHEN Zu-yu, et al. Analysis of factors affected on load losses of high capacity and long rock anchors[J]. 2003, 24(2).
DOI：

ZHANG Fa-ming, Liu Ning, CHEN Zu-yu, et al. Analysis of factors affected on load losses of high capacity and long rock anchors[J]. 2003, 24(2). DOI：

摘要

通过对水利水电工程岩体加固中常采用的大吨位预应力长锚索锚固力变化规律的分析，详细讨论了影响预应力锚索锚固力变化的钢材松弛、岩体强度与性质、施工质量、锚索结构与环境变化等因素，得出了不同影响因素对预应力长锚索锚固过程中锚固力损失的影响效应。观察表明，引起锚索锚固力损失的最主要因素是岩体的变形与施工质量。根据岩锚实测资料的统计分析，进一步提出了各影响因素与锚固力损失间相应的经验关系，最后，提出了控制锚固力损失的工程措施，可供相关锚索设计与施工时的参考。

Abstract

Based on studying the performance of widely used prestressed grouted rock anchors in water conservancy and hydropower projects

the factors affected on the anchoring load losses such as steel fiber relaxation

rock mass strength and property

construction quality

anchor structure

environment change in long time was discussed

and the mechanism of load losses with factors was put forward. It was observed that the main reasons of load losses versus time are rock mass deformation and construction quality. According to the monitored data of anchoring load losses with the factors

the relativity of the factors and load losses was build up. Furthermore

some engineering controlling methods were taken out. It is believed that the methods discussed in this paper can be used for construction of anchoring engineering in future.

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