Three-dimensional analytical model for the pull-out response of anchor-mortar-concrete anchorage system based on interfacial bond failure

Wang, Yan-Jie; Wu, Zhimin; Zheng, Jianjun; Zhou, Xiangming

doi:10.1016/j.engstruct.2018.11.024

Cited by 19 publications

(3 citation statements)

References 41 publications

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“…Wu et al [8][9][10][11], Ren et al [12], Martín et al [13], Yan et al [14,15], Cao et al [16] and Chen et al [17] analyzed the pullout bearing capacity and force evolution characteristics of fully grouted bolts using a tri-linear bond-slip model. Lu et al [18,19] and Wu et al [20,21] analyzed the mechanical response of fully grouted bolts during the whole pullout process by adopting an improved tri-linear bond-slip model. Chang et al [22,23] and Ma et al [24] numerically realized the tri-linear bond-slip model of the anchoring interface and studied the pullout bearing capacity and force characteristics of fully grouted bolts.…”

Section: Introductionmentioning

confidence: 99%

Effects of Shear Characteristics of Anchoring Interface on Bearing Performance of Fully Grouted Bolts Based on Variable Controlling Method

Du,

Zhang,

Feng

et al. 2024

Buildings

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The shear strength parameter of an anchoring interface is one of the key parameters affecting the design of bolt support. To better realize the design of bolt support, the pullout model of fully grouted bolts was established by FLAC3D numerical software. The commonly used tri-linear bond-slip model of the anchoring interface was selected. The variable controlling method was used to investigate the effects of the shear strength parameters of the anchoring interface on the bearing performance of fully grouted bolts. The results show that, with the increase in the displacement at the peak shear stress, the bearing capacity and the energy absorption of fully grouted bolts decrease and the ability of the fully grouted anchoring system to resist external loads weakens. Meanwhile, the deformation capacity of fully grouted bolts increases, and the durability of the fully grouted anchoring system is enhanced. With the increase in the residual shear stress and the displacement at the residual shear stress, the bearing capacity and deformation capacity of fully grouted bolts both increase, and the energy absorption also increases. Increasing the post-peak bearing properties of the anchoring interface can help improve the bearing performance of fully grouted bolts and enhance the ability of the fully grouted bolts to resist failure. The results may provide guidance for support design and performance enhancement of fully grouted bolts.

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Section: Introductionmentioning

confidence: 99%

Effects of Shear Characteristics of Anchoring Interface on Bearing Performance of Fully Grouted Bolts Based on Variable Controlling Method

Du,

Zhang,

Feng

et al. 2024

Buildings

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“…e key for determining the anchorage length is to obtain the shear stress at the interface of the anchorage structure. erefore, it is of great importance to accurately determine the shear stress distribution at the interface for the prediction of the ultimate bearing capacity of the grouted rockbolt [4]. In the current code for the design of anchorage structure (BS 8081:2015), it is still assumed that the interface shear stress is uniformly distributed, although both theory and experiment show that the distribution of the interface shear stress is nonlinear.…”

Section: Introductionmentioning

confidence: 99%

“…On the basis of considering the free and slip factors, Ma et al [12] proposed the closed solution of the shear stress distribution for the bolt-grout interface. Wang et al [4] proposed a three-dimensional analysis model based on the trilinear bond-slip model for the pull-out response of grouted bolts to describe the bond failure of the bolt-grout interface and derived the closed expressions of the interface shear stress at different pull-out stages. In addition, the distributions of the interface shear stress under different anchorage lengths were analyzed.…”

Section: Introductionmentioning

confidence: 99%

The Mechanism of Interface Dilatancy of Cement Mortar Rockbolts

Zhan

Wang

et al. 2020

Advances in Civil Engineering

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In this paper, the mechanism of the interface dilatancy of cement mortar rockbolts is studied based on the phenomenon of splitting failure of samples with a high sand content in the grouting material in laboratory tests. A conceptual model of the interface layer is used to explain the dilatancy mechanism of the interface. Based on the thick-walled cylinder theory, the causes of splitting failure of the samples are analyzed. By using the numerical simulation method, the influences of different dilatancy angles of the interface layer on the interface shear stress and the radial stress are analyzed. The results show that the sand content of the grouting material has a substantial effect on the bearing capacity of the rockbolt. The higher the sand content in the grouting material is, the more obvious the interface dilatancy will be, and the greater the radial stress generated by dilatancy will be, which will produce a higher bearing capacity of the anchorage system. Under the same load, the maximum shear stress of the interface layer increases with increasing dilatancy angle. Similarly, the larger the dilatancy angle of the interface layer is, the greater the radial stress caused by dilatancy will be. Away from the interface layer, the radial stress decays rapidly. The influence range of the radial stress caused by dilatancy is mainly in the interface layer and the rock nearby.

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Studying the Bond Performance of Fully Grouted Rock Bolts Based on the Variable Controlling

Chen

Zhang

2023

SpringerBriefs in Applied Sciences and Technology

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Three-dimensional analytical model for the pull-out response of anchor-mortar-concrete anchorage system based on interfacial bond failure

Cited by 19 publications

References 41 publications

Effects of Shear Characteristics of Anchoring Interface on Bearing Performance of Fully Grouted Bolts Based on Variable Controlling Method

Effects of Shear Characteristics of Anchoring Interface on Bearing Performance of Fully Grouted Bolts Based on Variable Controlling Method

The Mechanism of Interface Dilatancy of Cement Mortar Rockbolts

Studying the Bond Performance of Fully Grouted Rock Bolts Based on the Variable Controlling

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