Numerical Simulation on Bearing Characteristics of Tunnel‑Type Anchorage of a Grand Bridge over Qingjiang River

Authors

YIN Hongmei, CCCC Second Harbor Engineering Survey and Design Institute Co .， Ltd.， Wuhan ， Hubei 430074 ， ChinaFollow
SHI Qian, CCCC Second Harbor Engineering Survey and Design Institute Co .， Ltd.， Wuhan ， Hubei 430074 ， China
ZHANG Yihu, Key Laboratory of Geotechnical Mechanics and Engineering ， Ministry o f Water Resources ， Yangtze River Academy of Sciences ， Wuhan ， Hubei 430010 ， China

Abstract

This paper took the tunnel-type anchorage on the left bank of a grand bridge over the Qingjiang River as an example and established a three-dimensional geological generalization model based on the engineering geological analysis.In addition，the paper used different software to realize the approximate grid discrete division of complex rock mass and tunnel-type anchorage structure.FLAC3D software was used to simulate different working conditions，and the deformation characteristics and bearing capacity of the tunnel-type anchorage were obtained.It is found that the potential failure mode of the tunnel-type anchorage is that the anchor and the rock mass cut by the structural plane on the upper part of the anchor will slide along the rock/concrete bonding surface at the bottom of the anchor under the tension of the main cable.The adopted research ideas and relevant research results can provide technical support for the practice of tunnel-type anchorage engineering of the grand bridge over the Qingjiang River.At the same time，they help to build a systematic analysis and research method and evaluation index system of tunnel-type anchorage，which is of reference significance for the subsequent construction of tunnel-type anchorage engineering.

Publication Date

3-18-2024

DOI

10.14048/j.issn.1671-2579.2024.01.026

First Page

193

Last Page

201

Submission Date

February 2025

Recommended Citation

Hongmei, YIN; Qian, SHI; and Yihu, ZHANG (2024) "Numerical Simulation on Bearing Characteristics of Tunnel‑Type Anchorage of a Grand Bridge over Qingjiang River," Journal of China & Foreign Highway: Vol. 44: Iss. 1, Article 26.
DOI: 10.14048/j.issn.1671-2579.2024.01.026
Available at: https://zwgl1980.csust.edu.cn/journal/vol44/iss1/26

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