終局強度型耐震設計指針せん断強度式の推定精度に幾つかの有効係数が与える影響に関する調査: 低強度から高強度コンクリートまでを有するRC造柱を対象とした統計的検証

摘要

The design guideline for ultimate shear strength, which model consist of truss and arch mechanism based on the lower bound theory by plasticity, was issued by AIJ in 1990. Purpose of this study is to examine the adaptability investigation and to propose a new evaluate method of the ultimate shear strength using the shear formula by current guideline [AIJ, 1990]. This research report on the comparative studies about effectiveness coefficient of concrete compressive strength and shear reinforcement, which were given by many researchers for columns and beams. In addition, authors proposed a new estimate method for " effectiveness coefficient of concrete compressive strength " aimed to improve the prediction accuracy. It was conclude that relationship between calculated value and test data had generally enough accuracy and good correlation with test data much better than current guideline when a new evaluate method was used to predict the ultimate shear strength.%本論文では，コンクリート圧縮強度及びせん断補強筋に関する有効係数の違いが終局指針A法の耐力推定精度に与える影響をまず調ベ，その検証結果をもとにA法•B法双方の考えを視野に入れながら有効係数に対するパラメータ分析を行うことで，終局指針のせん断強度式に対する一考察を示した。