PROBLEM TO BE SOLVED: To provide a skeleton structure of an agriculture vinyl house which can be assembled to plural deeper frontage sizes without cutting processing to a ready-made circular tube material, and a joint member capable of adjusting insertion length of the circular tube material.SOLUTION: A joint member comprises: a joint main body 10 formed of a tube material which is bent into a chevron-shape； and a fastener 20 capable of fastening a circular tube material in a girder direction. The joint main body 10 comprises an insertion port 11 for internally inserting the circular tube material into each of both end parts, and plural adjustment holes 12 for communicating with a peripheral face in a longitudinal right angle direction, and on at least one end, the adjustment holes 12 are arranged in parallel in a prescribed interval along a longitudinal direction. The skeleton structure is configured so that, plural apex joints connects upper end parts of two rafter pipes, plural shoulder joints connects a lower end part of the rafter pipe and the upper end part of a pillar pipe, plural apex joints are connected to one ridge pipe, and plural shoulder joints are connected to one girder pipe.SELECTED DRAWING: Figure 1【課題】円形管材の差込長さを調節可能なジョイント部材と、既製品の円形管材を切断加工することなく複数の間口サイズに組立可能な、農業用ビニールハウスの骨組構造を提供する。【解決手段】ジョイント部材は、山形に屈曲した管材からなるジョイント本体１０と、桁方向の円形管材を締結可能な締結具２０とを備える。ジョイント本体１０は、両端部に円形管材を内挿するための差込口１１と、周面を長手直角方向に連通する複数の調節孔１２とを有し、少なくとも一端において、調節孔１２は長手方向に沿って所定間隔で並列する。骨組構造は、複数の頂部ジョイントが、それぞれ２本の垂木パイプの上端部同士を連結し、複数の肩部ジョイントが、それぞれ垂木パイプの下端部と支柱パイプの上端部を連結し、複数の頂部ジョイントが１本の棟パイプに連結し、複数の肩部ジョイントが１本の桁パイプに連結している。【選択図】図１
