| 摘要 |
PURPOSE: A reinforcement structure of a displacement control tunnel using pressurization is provided to restrain displacement and surface subsidence on the soft ground to the utmost by restoring displacement to an excavation face and increasing stiffness by compression. CONSTITUTION: A reinforcement structure of a displacement control tunnel using pressurization comprises a steel pipe(100) press-fitted parallel to the direction of excavation on the contour of an excavation face and filled with cement milk inward, a steel rib(300) provided to the lower part of a structure or the excavation face of a tunnel to support a slope on the lower part of the structure or the excavation face of the tunnel, a pressure bag(400) provided between the lower part of the structure or the internal wall of the tunnel and the steel rib to restore the displacement of the excavation face caused by excavation, a concrete portion placed between the steel ribs, and lining concrete(700) placed between the steel rib and the inner side of the concrete portion.
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