Synergistic effect of a new wedge-bond-type anchor for CFRP tendons
来源期刊：中南大学学报(英文版)2015年第6期
论文作者：XIE Gui-hua LIU Rong-gui CHEN Bei LI Ming-jun SHI Tian-gang
文章页码：2260 - 2266
Key words：carbon fiber reinforced polymer; anchor; wedge-bond-type; synergistic effect; elastic mechanics
Abstract: In order to improve the anchoring force of anchors for carbon fiber reinforced polymer (CFRP) tendons further, a new wedge-bond-type anchor for CFRP tendons was developed. The increment in anchoring force induced by the clamping segment of anchor was studied. Taking the deformation of all parts in clamping segment in the transverse direction into consideration, the calculation formula for the increment of anchoring force was proposed based on the linear elastic hypotheses. The proposed model is verified by experiments and conclusions are drawn that the anchoring force is influenced mainly by the inclination angle of clamping pieces, the length of clamping part and the thickness of bonding medium. Especially, the thickness of bonding medium should be lowered in design to improve the synergistic effect of anchors.
XIE Gui-hua(谢桂华), LIU Rong-gui(刘荣桂), CHEN Bei(陈蓓), LI Ming-jun(李明君), SHI Tian-gang(石天罡)
(Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China)
Abstract:In order to improve the anchoring force of anchors for carbon fiber reinforced polymer (CFRP) tendons further, a new wedge-bond-type anchor for CFRP tendons was developed. The increment in anchoring force induced by the clamping segment of anchor was studied. Taking the deformation of all parts in clamping segment in the transverse direction into consideration, the calculation formula for the increment of anchoring force was proposed based on the linear elastic hypotheses. The proposed model is verified by experiments and conclusions are drawn that the anchoring force is influenced mainly by the inclination angle of clamping pieces, the length of clamping part and the thickness of bonding medium. Especially, the thickness of bonding medium should be lowered in design to improve the synergistic effect of anchors.
Key words:carbon fiber reinforced polymer; anchor; wedge-bond-type; synergistic effect; elastic mechanics
