PROBLEM TO BE SOLVED: To provide a bellows-shaped building having a simple structure, facilitating the transfer of tunnel supporters, enabling a covering material interlocked therewith to be opened and closed conveniently, and usable as a plastic greenhouse, a garage, a warehouse and a workshop.SOLUTION: The bellows-shaped building has tunnel-shaped both terminal part supporters and intermediate supporter group stood therein, and the covering material covering the outside of the supporter group. The intermediate supporter group can be moved in the tunnel axis direction, and the covering material is linked to the supporter group and arranged so as to be extended and folded according to the movement of the intermediate supporter group. Both feet of each of both the terminal part supporters are fixed with angular pipes and the center top parts are fixed by installing a round pipe having a groove-shaped opening part at the bottom face. A nearly spherical body connected upward to the top part of each of the intermediate supporters is freely fitted in the round pipe so that each of the intermediate supporters may be hung by the round pipe so as to be slidable, and both feet of the leg parts of each of the intermediate supporters are freely fitted to the angular pipe so as to be slidable.【課題】本発明は、構造が単純で、トンネル支柱が移動し易く、これに連動した被覆材の開閉が軽便である建造物であって、ビニールハウス、ガレージ、倉庫、作業場としても使える蛇腹式建造物を提供するものである。【解決手段】トンネル状の両端部支柱と中間支柱群を立設し、該支柱群の外側を覆う被覆資材を備え、前記中間支柱群をトンネル軸方向に移動可能にし、かつ、被覆資材を該支柱群に連結して前記中間支柱群の移動と共に展開し又は畳めるように配設した蛇腹式建造物であって、前記両端部支柱が各両足元を角パイプで、また、中央頂部を底面に溝状の開口部を有する丸パイプで架設して固設し、前記各中間支柱の頂部から上向きに接合した略球状体を、前記丸パイプ内に遊嵌させ、前記丸パイプから、前記各中間支柱が吊るされて摺動可能にすると共に、前記各中間支柱の脚部両足元を、前記角パイプに遊嵌して摺動可能に構成したことを特徴とする蛇腹式建造物。【選択図】図１
