鉄筋コンクリート造非耐力壁付き十字型柱梁架構の破壊性状に関する研究

摘要

The purpose of this study is to evaluate the failure mechanism of reinforced concrete frame with non-structural walls. The lateral loading tests of the beam-column frame with non-structural walls are conducted. The parameters of the specimens are beam-column strength ratio considering the effect of non-structural wall, those are wall thickness, embedment of horizontal reinforcement of the standing and hanging wall, arrangement of vertical reinforcement of column with wing wall and height of contrary flexural point of column. The result shows that the beam-column frame with its strength ratio of more than 1.5, will form beam failure mode clearly under which the height of contrary flexural point of column is constant. The evaluation method is proposed for classifying the failure mode of beam-column frame with nonstructural walls to three types, those are 1) column failure with wall failure, 2) beam failure with wall failure, 3) beam failure without wall failure. The calculation results by the proposed method accord with the experimental results.%本研究では，非耐力壁付き架構の柱梁接合部周辺で生じうる破壞形式を明らかにすることを目的とし，実験を行った。また，想定される3種類の破壊形式を示し，それらの判別手法を提案した。以下に本研究により得られた知見を示す。1. 袖壁長さ(柱梁耐力比M_(jcu)/M_(jbu))をバラメータとした試験体No.1～4では，柱梁耐力比M_(jcu)/M_(jbu)が1.5以上の試驗体No.3,4で袖壁の損傷がない梁崩壊型(破壊形式 B)となった。試験体No.3,4では引張側圧縮側ともに柱主筋の降伏も確認されなかった。