Title:
WOODEN STRUCTURE LOAD-BEARING WALL, CONSTRUCTION METHOD FOR WOODEN STRUCTURE LOAD-BEARING WALL, METHOD FOR INCREASING WALL MAGNIFICATION OF WOODEN STRUCTURE LOAD-BEARING WALL, AND GYPSUM-BASED LOAD-BEARING SURFACE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2024/029210
Kind Code:
A1
Abstract:
The present invention increases the wall magnification of a wooden structure load-bearing wall without additionally attaching a reinforcing material or stiffener, and without increasing the specific gravity and/or sheet thickness of a gypsum-based surface material. A gypsum-based load-bearing surface material 10 for a wooden structure load-bearing wall is configured from: a main material or a core material comprising a plate-shaped gypsum cured body in which inorganic fibers and an organic-based strength-improving material are blended so as to exhibit a nail-side surface resistance of 500 N or greater; and a paper member covering at least front and back surfaces of the main material or core material. This load-bearing surface material: has a surface density that falls within a range of 6.5-8.9 kg/m2 and a compressive stiffness of 6.5 N/mm2 or greater; exhibits, in an in-plane shearing test of the load-bearing wall, an ultimate displacement (δu) greater than 20×10-3 rad and an initial stiffness (K) of 2.0 kN/10-3 rad or greater; and raises a plasticity rate (μ) due to a reduction in yield point displacement (δv), not only the ultimate displacement. As a result, the wall magnification and short-term standard shear stiffness (P0) of the wooden structure load-bearing wall are effectively and efficiently increased.
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Inventors:
SUDO USHIO (JP)
NIIMI KATSUMI (JP)
HASEGAWA TOMOYA (JP)
YAMASHITA TAKUJI (JP)
AKAI KOZO (JP)
SATO YOSUKE (JP)
NIIMI KATSUMI (JP)
HASEGAWA TOMOYA (JP)
YAMASHITA TAKUJI (JP)
AKAI KOZO (JP)
SATO YOSUKE (JP)
Application Number:
PCT/JP2023/022235
Publication Date:
February 08, 2024
Filing Date:
June 15, 2023
Export Citation:
Assignee:
YOSHINO GYPSUM CO (JP)
International Classes:
E04C2/04; E04B2/56; E04C2/26
Foreign References:
| JP2022031910A | 2022-02-22 | |||
| JP2021080142A | 2021-05-27 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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