a) is a detail view of a floor panel supporting structure.
b) is a detail view of a floor panel supporting structure.
a) is a perspective view of a wall panel.
b) is a vertical cross-sectional view of a wall panel.
a) is an explanatory plan view illustrating a step to attach wall panels to a through vertical frame stud.
b) is an explanatory plan view illustrating a step to attach wall panels to a through vertical frame stud.
a) is a schematic view illustrating a design method for a steel house according to the conventional platform construction method.
b) is a detail view of part C in
a) is an explanatory side elevation illustrating how upper and lower stories are joined together by the conventional platform construction method.
b) is an exploded perspective view of metal connectors.
A brief description of the present invention is given by reference to schematic views in
The floor panel 21 is prepared by attaching a floor plate 32 to the top surface of floor joists (side and end joists) of light gage shapes made from sheet steel. Both ends of the floor panel 24 are connected to the upper ends of the wall panels 21a on the other two opposite sides that constitute the second story wall, as in the case of the ground story wall 22 (as shown in
The wall panels 21 disposed along the four sides of a rectangle to form each story are attached to the through vertical frame studs 20, with the lower ends of all wall panels 21 are flush on all sides. Therefore, the upper and lower ends of the wall panels 21a of the upper and lower stories on two opposite sides are directly butt-connected. The ends of the wall panels 21a are connected by using appropriate metal connectors. The lower ends of the wall panels 21b of the upper story on the other two opposite sides hold the top surface of the both ends of the floor panel 24, as shown in
According to the present invention, the ground story wall (the wall of a lower story) 22 is completed first by attaching the wall panels 21 to the through vertical frame studs 20 extending to the upper story, and then the second story (the wall of an upper story) is built by repeating the process described above. By permitting construction of structural frameworks, including walls, of individual stories from lower ones to upper ones, the method of the present invention has the same advantage, that heavy machines and scaffolds are unnecessary, as the conventional platform construction method. Besides, the method of the present invention does not need the hold-down hardware and metal connectors required by the conventional platform construction method that connects the wall panels of the upper and lower stories by way of floor panels, thus streamlining the details of structural frameworks and eliminating the shortcoming of the conventional platform construction method. The floor panel 21 may also be supported by methods other than placing both ends thereof on the upper ends of the wall panels 21b of the lower story.
Concrete structures of the wall panel 21 and the connection between the through vertical frame studs 20 and wall panels 21 are described by reference to
In attaching wall panels 21 to a through vertical frame stud 20 of a square cross section, wall panels 21 constituting two girder walls and a wall frame of a wall panel 21 constituting a party wall (at this stage, the face member is not yet fastened to the wall frame 36 of the party wall) are brought close to three sides of the through vertical frame stud 20 from the three directions indicated by arrows in
The present invention (1) streamlines details of the structural framework, eliminates the need for metal reinforcements, reduces work loads at jobsites and simplifies designs because walls of individual stories are constructed by attaching wall panels 21 of upper and lower stories to through vertical frame studs 20 extending to upper stories, and (2) achieves the improvement described in (1) above while maintaining the advantage of the conventional platform construction method by supporting both ends of the floor panel 24 on the upper ends of the wall panels 21 on two opposite sides.
The present invention has the following advantages:
(1) the present invention provides greater working efficiency than conventional technologies because vertical frame studs at intersections of wall panels or corners are extended to continue to upper stories and shop-prefabricated wall panels are connected thereto, from lower to upper stories. That is to say, the present invention dispenses with the troublesome task of attaching, at jobsites, structural face members to the wall frames, consisting of pre-erected through vertical frame studs, involved in the conventional construction method. (2) The present invention reduces jobsite work-loads and simplifies design by streamlining the details of structural frameworks and eliminating the need for hold-down hardware and other complex metal reinforcements. (3) The present invention achieves the improvement described in (2) above while maintaining the advantage of the conventional platform construction method that does not need heavy machines and scaffolds because individual stories can be built from below after erecting through vertical frame studs.
Number | Date | Country | Kind |
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2004-340460 | Nov 2004 | JP | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/JP05/13779 | 7/21/2005 | WO | 00 | 1/19/2006 |