影响大吨位预应力长锚索锚固力损失的因素分析

›› 2003, Vol. 24 ›› Issue (2): 194-197.

影响大吨位预应力长锚索锚固力损失的因素分析

张发明^1，2, 刘宁¹, 陈祖煜² , 赵维炳³

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

收稿日期:2002-02-26 出版日期:2003-02-10 发布日期:2014-08-19
作者简介:张发明，男，1963年生，博士后，副教授，岩土工程专业，主要从事边坡稳定分析及锚固理论研究。

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

ZHANG Fa-ming^1,2, Liu Ning¹, CHEN Zu-yu², ZHAO Wei-bing³

（1. College of Civil Engineering, Hohai University, Nanjing 210098, China; 2. China Institute of Water Resources and Hydropower Research, Beijing 100044, China; 3. Nanjing Hydraulic Research Institute, Nanjing 210024, China

Received:2002-02-26 Online:2003-02-10 Published:2014-08-19

摘要/Abstract

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。

关键词: 预应力锚索, 锚固力损失, 影响因素, 控制措施

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.

Key words: prestressed rock cable bolting, anchoring load losses, factors, controlling methods

中图分类号:

TU 476

张发明 , 刘宁 , 陈祖煜 , 赵维炳 . 影响大吨位预应力长锚索锚固力损失的因素分析[J]. , 2003, 24(2): 194-197.

ZHANG Fa-ming , Liu Ning , CHEN Zu-yu , ZHAO Wei-bing . Analysis of factors affected on load losses of high capacity and long rock anchors[J]. , 2003, 24(2): 194-197.

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