構造設計・設計法Ⅱ／振動・応答

[2004] EVALUATION METHOD FOR SHEAR CAPACITY OF TAPERED RC BEAMS WITHOUT SHEAR REINFORCEMENT

座長(土木)：幸左賢二
座長(建築)：杉山智昭
講演者：侯陳偉¹, 松本浩嗣², 岩永崇志³, 二羽淳一郎⁴ (1.東京工業大学大学院理工学研究科土木工学専攻 2.東京工業大学Dept. of Civil Engineering 3.大成建設中国支店 4.東京工業大学理工学研究科土木工学専攻)

キーワード：Critical section, inclination of compressive strut, nonlinear FEM analysis, variable depth, 圧縮ストラット角度, 変動断面高さ, 耐力支配断面, 非線形FEM解析

This paper presents the evaluation method for shear capacity of tapered RC beams without stirrups. The nonlinear FEM analysis was found to be appropriate to simulate the shear behavior of tapered RC beams without stirrups. The simple relationship between the slope of taper and the inclination of the compressive strut was also proposed through FEM simulations. By determining the location of the critical section, the shear capacity of tapered RC beams without stirrups can be calculated. The calculated value showed good correspondence with the experimental results.