隧道锚的承载性能及其影响因素研究

廖明进; 安稳; 汤华; 邓琴; 于尚洋

doi:10.13204/j.gyjzG19082020

隧道锚的承载性能及其影响因素研究

doi: 10.13204/j.gyjzG19082020

1. 武汉科技大学, 武汉 430065;
2. 中国科学院武汉岩土力学研究所, 武汉 430071

基金项目:

云南省交通科技项目（云交科教[2017]23号）；武汉科技大学大学生科技创新基金项目（17ZRA045）。

详细信息

作者简介:
廖明进,男,1977年出生,博士,副教授。电子信箱:wazjn2006@163.com

计量
- 文章访问数: 78
- HTML全文浏览量: 10
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2019-08-20
- 网络出版日期: 2021-08-19

STUDY ON CHARACTERISTICS OF UPLIFT-BEARING CAPACITY AND INFLUENCE FACTORS OF TUNNEL ANCHORAGE

1. Wuhan University of Science and Technology, Wuhan 430065, China;
2. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

摘要

摘要: 悬索桥的隧道锚是承担主缆荷载的关键部件。现有研究表明隧道锚的承载性能主要受围岩、埋深、锚碇体外观等参数影响。为进一步验证其内在规律和参数敏感性，通过考虑埋深、锚碇体长度、围岩类别等影响因素，设计并进行了隧道锚的室内模型试验，研究各因素对隧道锚抗拔承载力的影响；然后基于室内模型试验的相关参数，采用数值方法对室内模型试验进行数值模拟，结果表明，数值方法研究结果与模型试验结果较为吻合；模型试验获得的影响因素规律和破坏特征与数值方法结论一致。研究结果显示，隧道锚承载力的主要影响因素依次为围岩类别、埋深、锚碇体底角等参数，锚碇体长度影响不明显。
- 隧道锚 /
- 承载力 /
- 模型试验 /
- 数值模拟 /
- 影响因素
Abstract: Tunnel anchorage of suspension bridges is the key components bearing loads from main cables. The bearing capacity of tunnel anchorage was mainly influenced by the parameters of surrounding rocks, embedment depth and the appearance of anchor blocks. In order to further verify the inherent laws and parameter sensitivity, considering the influence factors such as embedment, length of anchor blocks and surrounding rock classification, indoor model tests of tunnel anchorage were designed and conducted, and the effects of the influence factors on the uplift bearing capacity for tunnel anchorage were studied. Based on the related parameters of the indoor model tests, numerical simulations for the indoor model tests were conducted. The results showed the numerical simulation results were in good agreements with the results by the model tests, and the influence factors and the damage characteristics obtained by the model tests were in accordance with the results from the numerical simulations. The main influence factors of the uplift-bearing capacity for tunnel anchorage were the classification of surrounding rock, embedment and bottom angles of anchor blocks, and the influence of the length for the anchor blocks was not obvious.
- tunnel anchor /
- bearing capacity /
- model test /
- numerical simulation /
- influence factors

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