鉄筋コンクリート部材におけるひびわれ発生域の抵抗機構に関する実験研究 : ひびわれの開閉性状

概要

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Behaviors of a cracking area have effects on deflection and strength of RC members. In this paper, the results of investigation on cracking characteristics are reported. We paid special attention on mechanical properties of cracks, bond properties and their relations. Shape of concrete specimens used for this experiment is prism with one reinforcing steel bar. The specimens represent the constant moment region of the beam which appears between tensile cracks. We tested 59 specimens. The main results obtained by qualitative and quantitative investigations are summarized as follow : 1) The resistance mechanisms of the cracking area in the elasto-plastic deflection range were clarified. Spacing between cracks was one of the most important factors which effected the cracking behavior. 2) We obtained 15 modeling equations which well explained the resistance mechanisms of the cracking area by means of recursive culculation using the numerous experimental data. 3) We found that other models on the cracking behavior had sore problems in explainning the mechanisms.
社団法人日本建築学会の論文
1988-06-30