Application of a New Anchorage towards the Flexural Strengthening of RC Rectangular Beams with External Steel Tendons

Applied Sciences

Sungnam Hong¹  Sun-Kyu Park²  Dooyong Cho³ 

[1] College of Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon-Si, Gyeonggi-Do 16419, Korea;Department of Civil and Environmental Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon-Si, Gyeonggi-Do 16419, Korea;Department of Technology Education, Chungnam University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea;

关键词: newly proposed anchorage;    concrete beam;    ductility;    energy ratio;   

DOI  :  10.3390/app6050119

来源: DOAJ

【 摘 要 】

To strengthen concrete beams, a new anchorage was proposed, and its performance was evaluated in this study. Seven concrete beams were manufactured and flexurally loaded with displacement control up to the failure point. As important test variables, the anchorage type (new/conventional) and the prestress levels in the steel rebar (0, 50, and 100 kN) were selected. To investigate the strengthening effects based on these test variables, the deflection, strain, and failure mode were recorded, and then the load, ductility index, and energy ratio were analyzed. Test results showed that the newly proposed end anchorage had better strengthening effects and a greater inelastic energy than the conventional end anchorages.

【 授权许可】

Unknown