TUNNEL SUPPORT STRUCTURE AND TUNNEL SUPPORT STRUCTURE CONSTRUCTING METHOD
To efficiently construct a tunnel support structure.SOLUTION: A tunnel support structure 100 comprises a plurality of steel support portions 10 provided in an excavation pit 1 at predetermined intervals in the tunnel axial direction and extending in the tunnel circumferential direction, a concrete s...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To efficiently construct a tunnel support structure.SOLUTION: A tunnel support structure 100 comprises a plurality of steel support portions 10 provided in an excavation pit 1 at predetermined intervals in the tunnel axial direction and extending in the tunnel circumferential direction, a concrete structure 21 provided between a plurality of steel support portions 10, and an easily compressive and deformable portion 22 which is provided adjacent to the concrete structure 21 in the circumferential direction of the tunnel and is easier to compress and deform in the circumferential direction of the tunnel as compared with the concrete structure 21. The easily compressive and deformable portion 22 has a plurality of precast blocks 23, and the plurality of precast blocks have different strength characteristics.SELECTED DRAWING: Figure 4
【課題】トンネル支保構造を効率よく構築する。【解決手段】トンネル支保構造１００は、トンネル軸方向に互いに所定の間隔を空けて掘削坑１内に設けられ、トンネル周方向に延在する複数の鋼製支保部１０と、複数の鋼製支保部１０の間に設けられるコンクリート構造体２１と、コンクリート構造体２１にトンネル周方向に隣接して設けられ、コンクリート構造体２１と比較してトンネル周方向への圧縮変形が容易である圧縮変形容易部２２と、を備え、圧縮変形容易部２２は、複数のプレキャストブロック２３を有しており、複数のプレキャストブロックは、強度特性が異なる。【選択図】図４ |
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