Research on distribution of shear stress and length of anchorage end of prestressed cable

HONG Hai-chun; HU Yi-fu; LIU Zhi-ming; CAI Yao-jun

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Research on distribution of shear stress and length of anchorage end of prestressed cable

更新时间：2026-06-25

- Research on distribution of shear stress and length of anchorage end of prestressed cable
- Vol. 27, Issue S1, (2006)
- 作者机构：
  
  1. 河海大学岩土工程研究所,南京,210098
  2. 中南大学资源与安全工程学院,长沙,410083
  3. 长江勘测规划设计研究院,武汉,430010
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD352+.5
- Online First：15 December 2006，
  
  Published：2006
- 稿件说明：
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HONG Hai-chun, HU Yi-fu, LIU Zhi-ming, et al. Research on distribution of shear stress and length of anchorage end of prestressed cable[J]. 2006, 27(S1).
DOI：

HONG Hai-chun, HU Yi-fu, LIU Zhi-ming, et al. Research on distribution of shear stress and length of anchorage end of prestressed cable[J]. 2006, 27(S1). DOI：

摘要

基于弹性理论，按照半空间体在边界上受法向集中力作用，对预应力锚索锚固段剪应力沿长度方向的分布规律进行模型研究。通过分析实际工程和现场试验中剪应力分布特征，引入与预应力、锚固段长度、岩体强度、胶结材料强度等相关的参数?和与剪应力最大值的位置、锚固段直径等相关的参数?后，可以较好地模拟锚固段的剪应力分布规律。根据锚固段胶结材料的抗压强度?c、内摩擦角?以及参数?与预应力大致成线性反比例关系，可以估算极限承载力。同时，按所述方法计算实际需要的锚固段长度Ls是设计锚固段长度Ld的2tan?倍。最后，实例分析表明，研究成果是合理的。

Abstract

Model research on distribution regularity of shear stress on anchorage end of prestressed cable is carried out according to half space with concentrated force in normal direction on boundary based on the elastic theory. By analyzing the distribution characteristics of shear stress in practical engineering and field experiment

the distribution regularity of shear stress on anchorage end can be modeled with the introduction to parameter ? which is correlated to prestress

length of anchorage end

rock strength

and cementation strength and parameter ? which is correlated to the position of peak shear stress and the diameter of anchorage end. Ultimate bearing capacity can be calculated according to compression strength ?c and internal friction angle ? of cementation material and the approximately linear inverse proportion relation. Meanwhile

the design length of anchorage Ld multiplied by 2tan? makes the practical length of anchorage end Ls which is calculated by the paper’s method. Finally

two cases calculation and analysis show that the research production is reasonable.

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