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Journal of Mountain Science

, Volume 16, Issue 7, pp 1715–1730 | Cite as

A novel radial cable for restraining tensile failure in steep fill—rock interfaces

  • Da Huang
  • Pei-ji Li
  • Duo-feng CenEmail author
Article
  • 19 Downloads

Abstract

It is quite common for fill slopes such as embankments and airport foundations to be constructed in mountainous areas. Steep fill—rock interfaces in such areas undergo tensile failure owing to differences in the stiffness values and tensile strengths of the soil and hard rock. In this study, a new anchor system, termed “radial cable,” is proposed to increase the pullout capacity of cables in the fill; this in turn helps control tensile deformation in the fill slope along the interface. In a radial cable, the steel ropes of a conventional cable are equally and symmetrically separated into three sub-cables (a central sub-cable and two branch sub-cables) with a radial distribution starting from the position of the interface. Moreover, each of the sub-cables is fixed in the fill using short U-shaped rigid rods along the cable length and a rigid baffle at its end to further increase pullout resistance. Experimental and numerical uplift tests were conducted to analyze the pullout capacity and anchoring behavior of the radial cables in soil to study the effect of branching. The reinforcement effect of the radial cables was also examined using a case study.

Keywords

Fill slope Fill—rock interface Tensile failure Radial cable Pullout capacity 

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Notes

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 41672300 and 41807279).

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Civil and Transportation EngineeringHebei University of TechnologyTianjinChina

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