PROBLEM TO BE SOLVED: To provide an accordion-type construction wherein the construction has a simple structure, tunnel supports are easily movable, opening and closing of a covering material connected to the supports is light and convenient, and the construction can be used as a vinyl greenhouse, a warehouse, or a workplace.SOLUTION: Provided is an accordion-type construction wherein tunnel-like supports are erected, the construction is provided with a covering material which is connected to the supports and covers their outside, intermediate supports of the supports are movable in the tunnel axis direction, and the covering material is arranged to be capable of being unfolded or folded in conjunction with move of the intermediate supports. The accordion-type construction is characterized in that channel steels which have an upward opening and are extended between both end supports of the supports are fixed to both leg parts and a central top part of both the end supports, and casters attached downwardly to both leg parts and a top part of each of the intermediate supports are fitted into the channel steels through the opening for each of the intermediate supports to be movable.【課題】本発明は、構造が単純で、トンネル支柱が移動し易く、支柱に連結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、倉庫、作業場としても使える蛇腹式建造物を提供する。【解決手段】トンネル状の支柱群を立設し、該支柱群に連結し、かつ、その外側を覆う被覆資材を備え、前記支柱群のうち中間支柱群をトンネル軸方向に移動可能にし、かつ、該被覆資材を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、前記支柱群のうち両端部支柱が両脚部及び中央頂部において、上方に開口し、前記両端支柱間に延在する溝型鋼を固設して備え、前記各中間支柱の両脚部及び頂部に下向きに固着したキャスターを、前記開口を通じて前記溝型鋼内に嵌入して前記各中間支柱を移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
