天津建设科技2024，Vol.34Issue(4)：14-20,7.DOI:10.3969/j.issn.1008-3197.2024.04.004
近接隧锚协同受力机理及合理施工工序研究
Study on Coordinated Stress Mechanism and Reasonable Construction Process of Proximity Tunnel-Type Anchorage and Tunnel
石海洋 1李硕 2李文涛 1师启龙3
作者信息
- 1. 天津市交通科学研究院,天津 300060
- 2. 天津大学建筑设计规划研究总院有限公司,天津 300073
- 3. 中交公路长大桥建设国家工程研究中心有限公司,北京 100088
- 折叠
摘要
Abstract
In order to study the construction sequence of main cable anchorage and tunnel of near tunnel bridge under complex geological and engineering conditions,taking actual engineering as an example,the paper uses the finite element numerical method,based on the method of increasing cable force,to analyze and study the bearing safety characteristics of the anchor structure,the interaction mechanism between the adjacent tunnel and the tunnel-type anchorage,and the construction process.The results show that the safety factor of anchor plug is more than 2.0,and the safety factor of surrounding rock stability is more than 4.0,which meets the re-quirements of the code.However,in the process of construction,the blasting vibration should be strictly con-trolled,the support strength of tunnel-type anchorage chamber should be strengthened,and the adverse ef-fect of construction on surrounding rock disturbance should be reduced.After the completion of the lower tun-nel construction,the construction process of the upper tunnel-type anchorage can reduce the impact of the ad-jacent construction on the tunnel-type anchorage,and also reduce the stress of the first construction tunnel,which is scientific and reasonable for the stress of the anchor plug structure.关键词
主缆/锚碇/隧道/受力机理Key words
main cable/anchorage/tunnel/stress mechanism分类
交通工程引用本文复制引用
石海洋,李硕,李文涛,师启龙..近接隧锚协同受力机理及合理施工工序研究[J].天津建设科技,2024,34(4):14-20,7.
