摘要
为了评价隧道锚的受力性质,准确反映隧道锚的工作性能,依托某大型悬索桥隧道锚工程,建立了基于FLAC3D的地质概化数值分析模型,包括隧道锚碇与围岩,并基于现场动态监测数据进行验证。根据模型预测施工过程锚塞体及围岩的应力和位移变化规律,分析了各施工阶段隧道锚的受力性能,为施工阶段提出了防护建议,验证了成桥阶段隧道锚的稳定性及安全性。
In order to evaluate the characteristics of force on the tunnel-type anchorage and accurately reflect the working performance of the anchorage,based on the tunnel-type anchorage project of a large suspension bridge,a numerical analysis model of geological generalization based on FLAC3D was established.The model including tunnel-type anchorage and surrounding rock was verified based on on-site dynamic monitoring data.The change law of stress and displacement of anchor body and surrounding rock during construction was predicted in terms of the model,and the mechanical behaviors of tunnel-type anchorage in each construction stage were analyzed.Suggestions for protection during the construction phase were proposed,and the stability and safety of the tunnel-type anchorage after the completion of the bridge were verified.
作者
杨忠
张郁烽
段瑞芳
魏艳写
YANG Zhong1 , ZHANG Yu feng2 , DUAN Rui fang3 , Wei Yan xie4(1. Shaanxi Provincial Communications Construction Group, Xi＇an 710075, Shaanxi, China; 2. School of Highway, Chang＇an University, Xi＇an 710064, Shaanxi, China; 3. Shaanxi College of Communication Technology, Xi＇an 710018 Shaanxi, China; 4. Beijing Branch of CNPC East China Design Institute Co. , Ltd. , Beijing 100029, Chin)
出处
《筑路机械与施工机械化》
2018年第8期47-50,共4页
Road Machinery & Construction Mechanization
基金
陕西省教育厅专项科学研究计划(17JK0070)
关键词
隧道工程
隧道锚
FLAC3D
施工模拟
tunnel engineering
tunnel type anchorage
FLAC3D
simulation of construction
