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Three-dimensional Numerical Simulation for Construction Method of Single-arch Four-lane Road Tunnel
Author(s): 
Pages: 77-81
Year: Issue:  3
Journal: Journal of Yueyang Normal University

Keyword:  单拱四车道公路隧道 数值模拟 施工方法 力学特征;
Abstract: 单拱四车道公路隧道由于跨度特大、断面形状扁平、施工方法复杂,造成其在施工过程中应力分布不均匀,拱脚应力集中,从而极易导致围岩发生失稳乃至坍塌.利用大型有限差分软件FLAC3D对单拱四车道隧道在不同围岩条件下采用不同施工方法的施工动态过程进行三维数值模拟,得到了各种施工方法下隧道围岩应力、位移和塑性区的力学特征.通过比较分析这些力学特征,得出了不同围岩条件下最合适的施工方法.
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