A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
STAIR STRUCTURE
To provide a stair structure including a support girder constructed between an upper story and a lower story, and a plurality of treads supported on the support girder, in which when adopting a support girder shifted installation structure, the torsional stress generated in the support girder is properly handled while accomplishing rationalization by suppressing the cross-sectional expansion of the support girder.SOLUTION: Provided is a stair structure 1 having a support girder shifted installation structure in which a support girder 10 is provided at a position shifted to one side with respect to a left-right center portion 20a of a plurality of treads 20. Each of the plurality of treads 20 has a pair of left and right connecting members 30 that connect both ends 20b of the treads 20 and the support grinder 10. The structure has a connecting member axial center deviation structure in which at least one of shaft cores 31a, 32a of the pair of left and right connecting members 30 is offset with respect to a shaft core 10a of the support girder 10 to cancel the torsional stress generated in the support girder 10 due to the support girder shifted installation structure.SELECTED DRAWING: Figure 2
【課題】上階部と下階部との間に架設された支持桁、支持桁上に支持された複数の踏板部、を備えた階段構造において、支持桁ずれ設置構造を採用するにあたり、支持桁の断面拡大を抑制して合理化を図りながら、支持桁に生じるねじり応力を適切に処理する。【解決手段】複数の踏板部２０の左右中央部２０ａに対して一方側にずれた位置に支持桁１０を設けた支持桁ずれ設置構造を有する階段構造１であって、複数の踏板部２０の夫々において踏板部２０の両端部２０ｂと支持桁１０を連結する左右一対の連結部材３０を備えると共に、左右一対の連結部材３０の少なくとも一方の軸芯３１ａ，３２ａを支持桁１０の軸芯１０ａに対して偏倚させて、支持桁ずれ設置構造により支持桁１０に生じるねじれ応力を打ち消す連結部材軸芯偏倚構造を有する。【選択図】図２
STAIR STRUCTURE
To provide a stair structure including a support girder constructed between an upper story and a lower story, and a plurality of treads supported on the support girder, in which when adopting a support girder shifted installation structure, the torsional stress generated in the support girder is properly handled while accomplishing rationalization by suppressing the cross-sectional expansion of the support girder.SOLUTION: Provided is a stair structure 1 having a support girder shifted installation structure in which a support girder 10 is provided at a position shifted to one side with respect to a left-right center portion 20a of a plurality of treads 20. Each of the plurality of treads 20 has a pair of left and right connecting members 30 that connect both ends 20b of the treads 20 and the support grinder 10. The structure has a connecting member axial center deviation structure in which at least one of shaft cores 31a, 32a of the pair of left and right connecting members 30 is offset with respect to a shaft core 10a of the support girder 10 to cancel the torsional stress generated in the support girder 10 due to the support girder shifted installation structure.SELECTED DRAWING: Figure 2
【課題】上階部と下階部との間に架設された支持桁、支持桁上に支持された複数の踏板部、を備えた階段構造において、支持桁ずれ設置構造を採用するにあたり、支持桁の断面拡大を抑制して合理化を図りながら、支持桁に生じるねじり応力を適切に処理する。【解決手段】複数の踏板部２０の左右中央部２０ａに対して一方側にずれた位置に支持桁１０を設けた支持桁ずれ設置構造を有する階段構造１であって、複数の踏板部２０の夫々において踏板部２０の両端部２０ｂと支持桁１０を連結する左右一対の連結部材３０を備えると共に、左右一対の連結部材３０の少なくとも一方の軸芯３１ａ，３２ａを支持桁１０の軸芯１０ａに対して偏倚させて、支持桁ずれ設置構造により支持桁１０に生じるねじれ応力を打ち消す連結部材軸芯偏倚構造を有する。【選択図】図２
STAIR STRUCTURE
階段構造
TANAKA SHINTARO (author) / TAKAYAMA NAOYUKI (author)
2023-05-11
Patent
Electronic Resource
Japanese
IPC:
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
,
Ausbau von Bauwerken, z.B. Treppen, Fußböden
| European Patent Office | 2023