Stick–slip behaviour of mortar–rock interface under high loading rate

Author:

Wang Haitao1ORCID,Sun Haoyu2ORCID,He Yong3ORCID,Su Peng2ORCID

Affiliation:

1. Professor, Dalian Jiaotong University, Dalian, China (corresponding author: )

2. MESc candidate, Dalian Jiaotong University, Dalian, China

3. Research Fellow, Dalian Jiaotong University, Dalian, China

Abstract

A modified push-out method was used to explore the bond characteristics of the mortar–rock interface in an anchor system at different loading rates. Under a high loading rate (≥ 1·12 × 10−4 s−1), stick–slip behaviour, which is usually used to describe the mechanism of earthquakes, was observed at the mortar–rock interface for the first time in this experimental research. The test results showed that the load–displacement curve under a high loading rate included four stages: elastic deformation, interface softening, residual friction and stick–slip oscillation. A micro-mechanical model of bond–slip at the mortar–rock interface was also developed. A series derivation revealed the relationships among the dilatancy stress of the mortar–rock interface, the loading rate and the stress drop of stick–slip. The mechanism of stick–slip behaviour at the mortar–rock interface was theoretically established. The modified visco-elastoplastic constitutive model established to describe the stick–slip characteristics of a mortar–rock interface was verified with experimental results using Abaqus software.

Publisher

Thomas Telford Ltd.

Subject

Earth and Planetary Sciences (miscellaneous),Geotechnical Engineering and Engineering Geology

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Numerical Analysis for Shear Behavior of Binary Interfaces under Different Bonded Conditions;Applied Sciences;2024-04-26

2. Bond Property between Rebars and Basalt Fiber–Reinforced Concrete after Exposure to High Temperatures;Journal of Materials in Civil Engineering;2023-10

3. Editorial;Proceedings of the Institution of Civil Engineers - Geotechnical Engineering;2021-02

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