四渡河特大桥隧道锚碇三维弹塑性数值分析

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Abstract Tunnel anchorage and surrounding rock masses of Sidu River Bridge are analyzed by FLAC3D. Interaction between rock masses and tunnel anchorage is simulated. Deformation mechanism and rupture mode of tunnel anchorage structure and rock masses are studied. The ultimate bearing capacity or safety factor of tunnel anchorage is researched by overweighting load and reducing the value of interface intensity parameter between rock masses and tunnel anchorage. The stability is analyzed and basis is offered for design.

Key words： numerical analysis tunnel anchorage ultimate bearing capacity stability

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https://rockmech.whrsm.ac.cn/EN/Y2004/V23/IS2/4971