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Analysis of Flat Ratio of Large Section Highway Tunnel and Stress of Surrounding Rocks
Pages: 129-133
Year: Issue:  3
Journal: Journal of Gansu Sciences

Keyword:  Large sectionFlat ratioStabilityLayer structure methodMIDAS GTS;
Abstract: 利用有限元软件MIDAS GTS,建立地层结构模型,分析3种围岩、3种扁平率组合下的大断面扁平隧道受力情况,比较控制点的锚杆轴力、喷混轴力、喷混弯矩及衬砌的位移.研究表明:当三类围岩扁平率为0.588,四、五类围岩扁平率为0.625时,既能保证横断面受力最小,又能维持良好的稳定性,为最优断面.
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