DERIVATION AND APPLICATION OF LIMIT STATE CURVE BASED ON MAXIMUM DISPLACEMENT AND CUMULATIVE ENERGY FOR WOOD SHEAR WALL

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  • ISODA Hiroshi
    Assoc. Prof., Faculty of Engineering, Shinshu University, Dr. Eng.
  • HITOMI Yusaku
    Graduate Student, Graduate School of Engineering, Shinshu University
  • MIYAKE Tatsuya
    President, Nihon System Sekkei Architects & Engineers, Dr. Eng.

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  • 木造耐力壁の最大変形と累積エネルギーを指標とした限界曲線の誘導とその応用
  • モクゾウ タイリョクヘキ ノ サイダイヘンケイ ト ルイセキ エネルギー オ シヒョウ ト シタ ゲンカイ キョクセン ノ ユウドウ ト ソノ オウヨウ

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Abstract

In this study, the limit curve relating between energy absorption and maximum displacement is derived from cyclic loading test of wood shear walls. Time-history analysis is also conducted to evaluate safety of wood shear wall based on the limit curve. As the results, following conclusions are obtained:<br>1) Limit state derived from energy absorption and maximum displacement of wood shear wall is similar to that of steel members. That means limit state is determined by energy absorption index.<br>2) The state mentioning above is slightly different from types of shear wall. Characteristic of sheathed shear wall such as plywood shear wall is close to steel member but that of bracing shear wall is close to medium characteristic of steel and reinforced concrete member.<br>3) According to results of time history analysis, responses which are designed in accordance with minimum requirement of Japanese building standard law transcend the limit state during extremely big earthquakes such as JMA Kobe and JMA Kawaguchi.<br>4) Aftershock should be considered in seismic performance for shear walls which is sensitive to energy absorption.

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