SUSPENSION FRAME STRUCTURE

To suppress deflection of a steel beam supporting a ceiling slab and a ceiling base steel frame material.SOLUTION: A suspension frame structure includes a steel beam 20 erected on a pair of columns 14 and supporting a ceiling slab 30, a ceiling base steel frame material 40 disposed below the steel beam 20 in the material axial direction of the steel beam 20 and supporting a ceiling material 48 and structurally separated from the pair of columns 14, and a plurality of strut materials 60 connecting the steel beam 20 and the ceiling base steel frame material 40, suspending and supporting the ceiling base steel frame material 40 and rigidly joined to the steel beam 20 and the ceiling base steel frame material 40.SELECTED DRAWING: Figure 2 【課題】天井スラブ及び天井下地鉄骨材を支持する鉄骨梁のたわみを抑制することを目的とする。【解決手段】吊り架構構造は、一対の柱１４に架設され、天井スラブ３０を支持する鉄骨梁２０と、鉄骨梁２０の下方に該鉄骨梁２０の材軸方向に沿って配置され、天井材４８を支持するとともに、一対の柱１４と構造的に縁が切られる天井下地鉄骨材４０と、鉄骨梁２０と天井下地鉄骨材４０とを連結し、該天井下地鉄骨材４０を吊り下げ支持するとともに、鉄骨梁２０及び天井下地鉄骨材４０に剛接合される複数の束材６０と、を備える。【選択図】図２