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The Analysis of Anchoring Characteristics of Rock Slope Based on the Nonlinear Twin-Shear Criterion Subjected to Seismic Loads

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Abstract

The modified pseudo-dynamic method is introduced in the paper at first, then geometric model of anchoring characteristics of rock slope considering nonlinear twin-shear criterion subjected to seismic loads is established. Finally some correlated influential parameters on the anchoring characteristics of rock slope are analyzed, the conclusions are drawn that the minimum total anchoring force f increases as the increase of bolt inclination angle \(\alpha\), unit weight \(\gamma\) and horizontal seismic acceleration coefficient kh; And minimum total anchoring force f decreases as the increase of internal friction angle \(\phi\), vertical seismic acceleration coefficient \(k_{\text{v}}\), the geometric parameters mi and GSI and uniaxial compression strength \(\sigma_{c}\); when internal friction angle \(\theta\) is in certain range (\(\theta \le 18.1^{ \circ }\)), the value of total anchoring force becomes smaller as the value of \(\theta\) and \(\phi\) increases, the slope becomes safer. These conclusions can bring great theoretical value to analyze anchoring characteristics of rock slope.

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Acknowledgements

This work is supported by the first batch of Natural Science Foundation of SiChuan Provincial Department of Education (No. 17ZA0270); Talent Introduction Projection in 2016 in SiChuan University of Science and Engineering (No. 2016RCL19); The open foundation item in key laboratory about nondestructive testing and engineering calculation in university in 2016 (No. 2016QYJ02); science and technology project of safety production in SiChuan province (aj20170601105926).

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  1. School of Civil Engineering, Nanyang Institute of Technology, Nanyang, China

    X. B. Gu

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Gu, X.B. The Analysis of Anchoring Characteristics of Rock Slope Based on the Nonlinear Twin-Shear Criterion Subjected to Seismic Loads. Geotech Geol Eng 38, 6343–6352 (2020). https://doi.org/10.1007/s10706-020-01439-7

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