鉄筋コンクリート壁開口隅部ひびわれ制御技術に関する研究

概要

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The phenomena of crack development as it relates to reinforcement near the corners of window openings in reinforced concrete walls was researched and a design method for determining the relationship of crack width and quantity of reinforcement was developed. The results were based on the data of experiments with full scale specimens (which contained various types of reinforcement and were observed over a period of two years and seven months) and other existing documents. In experiments with full scale specimens, many types of reinforcement were compared. Ladder type reinforcement resulted in the na-rrowest crack width and diagonal bar reinforcement had the next narrowest and the other samples had considerably wider cracks width. Ladder type reinforcement and diagonal bar reinforcement was used in opening corner on external walls of reinfoced concrete in M. building. The cracks width was measured 2 years 1〜2 monthes after concreting. Ladder type reinforcement resulted in the narrower average crack width than diagonal ber reinforcement, so ladder type reinforcement is more effective another reinforcement.
社団法人日本建築学会の論文
1989-06-30