CFRPシートとコンクリートの付着挙動(その2) : 面外拘束による付着耐力の改善

概要

論文の詳細を見る
CFRP (Carbon Fiber Reinforced Plastic) sheet has been used for the retrofitting of a number of existing concrete buildings and structures because of its excellent properties (high strength, lightness and high durability). Since an improvement of bond strength between CFRP sheet and concrete was observed by providing lateral sheets for anchoring in previously conducted tests, quantification of its confining effect on the strength was required. A procedure to determine the characteristics of two-node joint elements was therefore proposed so that the dilatancy along cracked surface of bonding interphase would be modeled in finite element analysis. The result of analysis showed that the maximum bond stress was improved from 4.56MPa up to 5.10MPa by providing out-of-plane (normal) confining stress of O.SMPa. Required width of the lateral anchoring sheet is estimated as 30mm.
社団法人日本建築学会の論文
1998-07-30