Research Progress on Interface Failure Mechanism and Constitutive Model of Anchorage Structure

ZHANG Yuwei; JIE Jinpu; SONG Zhanping; SUN Yinhao; CHENG Tao

doi:10.3973/j.issn.2096-4498.2024.S2.004

Tunnel Construction >

2024 , Vol. 44 >Issue S2: 36 - 50

DOI: https://doi.org/10.3973/j.issn.2096-4498.2024.S2.004

Research Progress on Interface Failure Mechanism and Constitutive Model of Anchorage Structure

ZHANG Yuwei ,
JIE Jinpu ,
SONG Zhanping ,
SUN Yinhao ,
CHENG Tao

Expand

(1. School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, Shaanxi, China; 2. Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi′an 710055, Shaanxi, China; 3. Institute of Tunnel and Underground Structural Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, Shaanxi, China; 4. China Railway 20th Bureau Group First Engineering Co., Ltd., Suzhou 215000, Jiangsu, China; 5. China Railway Beijing Engineering Bureau Group First Engineering Co., Ltd., Xi′an 710100, Shaanxi, China)

Online published: 2024-12-20

Fold

Abstract

Based on comprehensive analysis of a large number of literatures in China and abroad, the authors divide the development of anchorage theory into two stages, and summarize the anchorage theory of rock mass and four failure modes. The primary failure of the anchorage structure is slip failure of bolt-anchorage agent interface. According to the failure characteristics of anchorage structure failure mode, corresponding prevention and control measures are put forward. It is pointed out that the anchorage interface model constructed in the load transfer mechanism of anchorage interface is mainly shear slip model and shear lag model. The nonlinear shear slip model is considered as the mainstream model for the load transfer mechanism of anchorage interface. The influence parameters of interface model are analyzed, determining that the stress distribution pattern of the anchorage interface is that the interface shear stress is nonlinearly distributed along the anchorage length. The numerical simulation method and its applicability of the anchorage structure are sorted out. It is found that the anchorage interface mechanics explored based on the continuous-discrete coupling method while considering the diversity of the anchorage structure materials has great advantages and is worth popularizing. Suggestions on the indoor and on-site pull-out test of the anchorage structure of the multi-monitoring system are proposed. Finally, discussions and prospects are made on the theoretical derivation, numerical analysis, and pull-out test of the anchorage interface mechanics.

Key words： anchorage theory; failure mode; load transfer mechanism; shear slip model; numerical simulation

Cite this article

ZHANG Yuwei , JIE Jinpu , SONG Zhanping , SUN Yinhao , CHENG Tao .

Research Progress on Interface Failure Mechanism and Constitutive Model of Anchorage Structure

[J]. Tunnel Construction, 2024 , 44(S2) : 36 -50 . DOI: 10.3973/j.issn.2096-4498.2024.S2.004

Options

Outlines

〈

〉

模态框（Modal）标题

Abstract

Cite this article