Vault formwork construction device

The utility model provides a vault formwork construction device. The tunnel vault formwork comprises a supporting frame and a vault formwork body, the vault formwork body comprises keels, panels and I-shaped wood beams, the keels are arc-shaped keels, the panels and the keels are the same in radian and attached to a tunnel vault, the I-shaped wood beams are transversely arranged between the panelsand the keels, and the top faces and the bottom faces of the I-shaped wood beams are parallel to tangent lines of curved surfaces of the panels and the keels respectively. The secondary keel adopts the I-shaped wood beam, the rigidity is high, the use cost is low, the distance between the vertical rods can be increased in the longitudinal direction, a frame body is saved, and the secondary keel has high applicability to irregular widened tunnel construction. 本实用新型提供了一种拱顶模板施工装置，包括支撑架，拱顶模板，拱顶模板包括龙骨，面板，工字木梁，龙骨为弧形龙骨，面板与龙骨弧度相同且贴合隧道拱顶，工字木梁横向设置于面板与龙骨之间，工字木梁顶面和底面分别于面板的曲面和龙骨的曲面的切线平行。本实用新型次龙骨采用工字木梁，刚度大，使用成本低廉，纵向能使立杆间距增加节约架体且对于