INVERT BLOCK AND INVERT BLOCK CONTINUOUS STRUCTURE
To provide an invert-block capable of being easily carried out construction to prevent plate swelling in tunnels at low cost in a short construction period.SOLUTION: An invert-block 10 is placed on the bottom ground of a tunnel to form a reverse arch shape along the circumferential direction of the...
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Zusammenfassung: | To provide an invert-block capable of being easily carried out construction to prevent plate swelling in tunnels at low cost in a short construction period.SOLUTION: An invert-block 10 is placed on the bottom ground of a tunnel to form a reverse arch shape along the circumferential direction of the tunnel. The invert-block is constituted of multiple steel elements 10e having a long shape, which are connected to each other axially on the long side and arranged long in the circumferential direction of the tunnel. These elements 10e are integrated to form a box-shaped hollow structure consisting of an upper plate ts, a lower plate us, and side plates sf. A connection opening 10ea formed on the longitudinal side of the elements 10e has a truss-shaped support member 11 that is provided to connect the internal spaces of both elements 10e and to support the load from above.SELECTED DRAWING: Figure 1
【課題】トンネルにおける盤膨れ防止の施工を、短い工期で、低コスト且つ容易に行うこと。【解決手段】トンネルの底部地盤に設置され、トンネルの円周方向に沿って逆アーチ状を形成するインバート用ブロック10であって、長尺形状を呈して長手側で軸方向に向けて相互に接続されてトンネル円周方向に長く配置された複数の鋼製のエレメント10eで構成されて、これらのエレメント10eが一体になって上板ts、下板usおよび側板sfからなる箱型の中空構造が形成され、エレメント10eの長手側に形成された接続用開口部10eaには、双方のエレメント10eの内部空間を連通させるとともに上方向からの荷重を支持するトラス状の支持部材11が設置されている。【選択図】図1 |
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