Development of Verification Method of Accommodating Performance to Seismic Displacement for Various Interior and Exterior Wall Panel of Wooden Houses

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K04686
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23010:Building structures and materials-related
• Research Institution: Yokohama National University
• Principal Investigator: Nakao Masato 横浜国立大学, 大学院都市イノベーション研究院, 特別研究教員 (60323937)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 木造 / 外装材 / 内装材 / ラスモルタル / 石こうボード / 層間変位追従性能

Outline of Final Research Achievements

An analysis model of the lath-mortar exterior wall which can predict a shear force-displacement relationship was constructed and the validity of the analysis model was examined by the result of shear loading tests of the lath-mortar exterior wall specimens. From these considerations, an evaluation method of the deformation performance of lath-mortar exterior walls was proposed, and a new support connector for lath-mortar was developed. For interior walls, a shear loading test of a specimen that was applied double gypsum board was conducted. From the test, it was found that driving all screws to columns enables the gypsum boards not to fall off up to 1/15 radian.

Free Research Field

建築構造

Academic Significance and Societal Importance of the Research Achievements

ラスモルタルが脱落しない仕様は、小規模木造建築物を想定した実験によって明らかになっていたが、本研究によって、接合具のデータが整備され、解析モデルが構築されたことで、建築物の規模や仕様に縛られず、大地震時にラスモルタルが脱落しないように設計することが可能になる。また、全てのビスを柱に到達させることで、二重張り石こうボードが1/15radまで脱落しないことが明らかになり、耐火構造の木造建築物の増加が期待される。