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胶结式预应力锚索锚固段荷载传递特性研究
引用本文:何思明,田金昌,周建庭.胶结式预应力锚索锚固段荷载传递特性研究[J].岩石力学与工程学报,2006,25(1):117-121.
作者姓名:何思明  田金昌  周建庭
作者单位:1. 中国科学院,成都山地灾害与环境研究所,四川,成都,610041
2. 西藏自治区交通厅项目中心,西藏,拉萨,850000
3. 重庆交通学院,重庆,400074
基金项目:教育部科学技术研究项目;中国科学院知识创新工程项目
摘    要:在边坡工程中大量使用胶结式预应力锚索,但对其作用机制方面研究还很少,特别是关于锚固段的荷载传递特性还存在很多模糊认识。为此,以胶结预应力锚索锚固段与围岩体界面特性、锚固段极限黏结强度以及侧阻力分布规律为基础,给出预应力锚索锚固段合理长度的计算方法,研究岩体特性、灌浆材料特性、束体材料以及三者之间相对刚度等因素对预应力锚索锚固段荷载传递特性的影响等机制问题,为合理进行预应力锚索设计提供了依据。

关 键 词:边坡工程  预应力锚索  锚固段长度  黏结强度  侧阻力分布
文章编号:1000-6915(2006)01-0117-05
收稿时间:2004-10-18
修稿时间:2004-10-182004-12-16

STUDY ON LOAD TRANSFER OF BOND PRESTRESSED ANCHOR ROPE
HE Si-ming,TIAN Jin-chang,ZHOU Jian-ting.STUDY ON LOAD TRANSFER OF BOND PRESTRESSED ANCHOR ROPE[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(1):117-121.
Authors:HE Si-ming  TIAN Jin-chang  ZHOU Jian-ting
Affiliation:1. Institute of Mountainous Hazards and Environment , Chinese Academy of Sciences, Chengdu , Sichuan 610041, China; 2. Project Center of Communications Department of Tibet, Lhasa, Tibet 850000, China; 3. Chongqing Jiaotong University, Chongqing 400074, China
Abstract:The bond prestressed anchor ropes have been used in slope engineering, however, the mechanism of load transfer of bond section is not clearly seen. In this paper, the behavior of bond prestressed anchor rope is investigated based on the shear stress-slip relation of interfacebetween bond body and surrounding rock and shear lag model. Both the length and shear distribution of bond body are determined. Through a case of study, the validity of proposed method is verified by comparing the predicted results with existing experimental data.
Keywords:slope engineering  prestressed anchor rope  length of bond body  bond strength  side resistance distribution
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