Title:
GYPSUM-BASED BEARING SURFACE MATERIAL FOR WOODEN BUILDING, BEARING WALL STRUCTURE, AND BEARING WALL CONSTRUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/205993
Kind Code:
A1
Abstract:
The present invention increases the wall scale factor of a wooden structure 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 bearing surface material (10) for a wooden structure 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 bearing surface material has a surface density within a range of 6.5-8.9 kg/m2, and, in an in-plane shearing test, exhibits a final displacement (δu2) greater than 20×10-3 rad and a final bearing capacity (corrected value) (Pu') greater than 7.6 kN. By using a wooden structure bearing wall in which this bearing surface material is used, a short-term standard shearing bearing capacity (P0) that is greater than that of a wooden structure bearing wall, in which is used the same type of bearing surface material having a surface density of 9.0 kg/m2 or greater, is obtained.
Inventors:
SUDO USHIO (JP)
NAKAMURA WATARU (JP)
HASEGAWA TOMOYA (JP)
NAGANO MUNEYOSHI (JP)
WADA MASAHIRO (JP)
TADA KATSUMI (JP)
SATO YOUSUKE (JP)
NAITO DAISUKE (JP)
NAKAMURA WATARU (JP)
HASEGAWA TOMOYA (JP)
NAGANO MUNEYOSHI (JP)
WADA MASAHIRO (JP)
TADA KATSUMI (JP)
SATO YOUSUKE (JP)
NAITO DAISUKE (JP)
Application Number:
PCT/JP2021/014227
Publication Date:
October 14, 2021
Filing Date:
April 01, 2021
Export Citation:
Assignee:
YOSHINO GYPSUM CO (JP)
International Classes:
E04B2/56; E04C2/04; E04C2/26
Domestic Patent References:
| WO2019203148A1 | 2019-10-24 | |||
| WO2019203148A1 | 2019-10-24 | |||
| WO2019058936A1 | 2019-03-28 |
Foreign References:
| JP2002070239A | 2002-03-08 | |||
| JPH09217476A | 1997-08-19 | |||
| JP2001227086A | 2001-08-24 | |||
| JP6412431B2 | 2018-10-24 | |||
| JP2001227086A | 2001-08-24 | |||
| JPS5642948B2 | 1981-10-08 | |||
| JP5642948B2 | 2014-12-17 | |||
| JP6412431B2 | 2018-10-24 |
Other References:
MINISTRY OF LAND, INFRASTRUCTURE, TRANSPORT AND TOURISM OF JAPAN, THIN SHEET LIGHTWEIGHT STEEL CONSTRUCTION, no. 1641, 2001
ALLOWABLE STRESS DESIGN FOR WOODEN FRAMEWORK CONSTRUCTION METHOD HOUSING, 2017, pages 63,300
ALLOWABLE STRESS DESIGN OF WOODEN FRAMEWORK CONSTRUCTION METHOD HOUSING, 2017, pages 63,300
ALLOWABLE STRESS DESIGN FOR WOODEN FRAMEWORK CONSTRUCTION METHOD HOUSING, 2017, pages 63,300
ALLOWABLE STRESS DESIGN OF WOODEN FRAMEWORK CONSTRUCTION METHOD HOUSING, 2017, pages 63,300
Attorney, Agent or Firm:
SHIMAZOE, Yoshihiko (JP)
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