面材張り耐力壁接合部の引抜力計算法に関する研究引抜力算定式の提案と枠組壁工法2層鉛直構面による実験的検証

摘要

面材張り耐力壁接合部軸力の簡易計算法を2階建て枠組壁工法建rn物に適用し、実用性の高い壁倍率による簡易算定式を提案した。まrnた、実大の枠粗壁工法2層有開口鉛直構面による水平加力試験を行rnない、計算値と比較した。簡易計算法は、総2階形状・セットバッrnク形状を問わず容易に接合部軸力を推定でき、大きな軸力が生じるrn最外端や開口脇等において実験結果と比較的よく一致し、概わ安全rn側の評価を得ることができた。%The objective of this study is to propose a calcuration method of tensile axial force acting on connections at top and bottom of sheathed shear walls in timber wall structures. And the method is applied to practical design for light frame construction, simplified formulae using shear resistance factor are derived. The formulae are compased of three terms, and the axial force can be shown as the sums of vertical shear force in the shear wall dead load, and additional force from the overturning moment generated in the boundary beam. The method and the formulae are confirmed by full-scale racking tests of 2-story walls of light frame construction. Concluding remarks are as follows : 1)The method can be applied to tha varieties of the shape of sheathed panels. 2)The method can be also applied to the varietied of disposition of walls in stories. 3)Calcuration values that uses existing stress and shear resistance fector are coincident satisfactorily with the experimental values.