FORMWORK FOR TUNNEL LINING
To provide formwork for tunnel lining capable of easily forming inducing joints for tunnel lining concrete while contributing to reduce the construction period by being separated, if necessary.SOLUTION: A formwork for tunnel lining 1 includes a frame part 2 and a formwork body 3. The frame part 2 is...
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Zusammenfassung: | To provide formwork for tunnel lining capable of easily forming inducing joints for tunnel lining concrete while contributing to reduce the construction period by being separated, if necessary.SOLUTION: A formwork for tunnel lining 1 includes a frame part 2 and a formwork body 3. The frame part 2 is constituted of a pair of divided frame parts 2F, 2R. The formwork body 3 is constituted of a pair of divided formwork bodies 3A, 3B. The pair of divided frame parts 2F, 2R is configured to be selectable either the state where they are connected by a connecting member 40 (50) and the two are connected and integrated, or the state where the connection is released and the two are separated. In the state that the pair of divided frame parts 2F and 2R is combined and integrated, in a gap δ formed between the adjacent end faces of the pair of divided formwork bodies 3A, 3B, a plate member 15 for forming an inducing joint 14 in the middle of each construction span is arranged in a pull-out possible manner in a state of protruding over the entire circumference of the lining space S.SELECTED DRAWING: Figure 2
【課題】トンネル覆工コンクリートに誘発目地を簡単に設けることができるとともに、必要な場合には分離して工期の短縮に資することができるトンネル覆工用型枠を提供する。【解決手段】トンネル覆工用型枠1は、架台部2と型枠本体部3を備え、架台部2は、一対の分割架台部2F,2Rによって構成され、型枠本体部3は、2分割された一対の分割型枠本体部3A,3Bによって構成されており、一対の分割架台部2F,2Rは、連結部材40(50)によって連結されて両者が結合一体化した状態と連結が解除されて両者が分離した状態のいずれかを選択可能であり、一対の分割架台部2F,2Rが結合一体化した状態では、一対の分割型枠本体部3A,3Bの隣接する端面の間に形成された隙間δには、各施工スパンの中間部に誘発目地14を形成するためのプレート部材15が覆工空間Sの全周に亘って突出する状態で引き抜き可能に挿入配置されている。【選択図】図2 |
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