Ultimate Stress of Prestressing Steel in Prestressed Concrete Beams Strengthened by External Prestressing

2004 ◽  
Vol 16 (5) ◽  
pp. 677-686
Author(s):  
Sang-Yeol Park
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Ultimate Stress ◽  
Prestressing Steel ◽  
External Prestressing

scholarly journals Experimental and Theoretical Investigation of Bending in Concrete Beams Strengthened with External Prestressing CFRP Tendons

2016 ◽  
Vol 10 (1) ◽  
pp. 492-510
Author(s):  
Yu Tianlai ◽  
Tian Shuai ◽  
Zhao Yunpeng ◽  
Zhang Liyuan
Keyword(s):  
Prestressed Concrete ◽  
Design Theory ◽  
Failure Modes ◽  
Concrete Beams ◽  
Reinforcement Ratio ◽  
Flexural Properties ◽  
Bending Angle ◽  
Prestressing Steel ◽  
Strength Grade ◽  
External Prestressing

The flexural properties of concrete beams strengthened by external prestressing carbon fibre-reinforced plastic (CFRP) tendons are studied through static loading tests. The loading processes, failure modes, right-sectional strain features, and ductility of the strengthened concrete beams are analysed, permitting comparisons of the influences of the bending angle of the external CFRP tendons, the strength grade of the concrete, the reinforcement ratio of the internal non-prestressing steel, and the loading strengthening level of the external prestressing CFRP tendons on the flexural properties of the beams. Test results show that the external prestressing CFRP tendons can improve the anti-cracking properties, stiffness, and flexural properties of concrete beams. The bending angle of the external CFRP tendons should not exceed 10°, while the reinforcement ratio and loading strength have obvious effects on the flexural properties of the beams they reinforce; conversely, the strength grade of the concrete has relatively little influence on the flexural properties. Based on the results, a bending bearing capacity formula for concrete beams strengthened with external prestressing CFRP tendons is determined according to the design theory of externally prestressed concrete structures; this formula provides the accuracy required for construction and therefore it can be used as a reference for practical engineering.

Ultimate Stress of Unbonded Tendons in Partially Prestressed Concrete Beams

PCI Journal ◽  
1985 ◽  
Vol 30 (6) ◽  
pp. 72-91 ◽  
Author(s):  
Xuekang Tao ◽  
Gongchen Du
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Ultimate Stress ◽  
Unbonded Tendons

Ultimate stress increase in unbonded tendons in prestressed concrete beams

2010 ◽  
Vol 11 (12) ◽  
pp. 998-1014 ◽  
Author(s):  
Wen-zhong Zheng ◽  
Xiao-dong Wang
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Ultimate Stress ◽  
Stress Increase ◽  
Unbonded Tendons

The Compilation of Nonlinear Analysis Program for Externally Prestressed Concrete Beams

2014 ◽  
Vol 919-921 ◽  
pp. 1334-1339
Author(s):  
Hui Ju Cai ◽  
Jian Min Zhou ◽  
Ying Gao
Keyword(s):  
Nonlinear Analysis ◽  
Prestressed Concrete ◽  
Static Load ◽  
Concrete Beams ◽  
Geometrical Nonlinearity ◽  
Analysis Program ◽  
Existing Building ◽  
External Prestressing ◽  
External Tendons ◽  
Prestressed Beams

In order to popularize the application of external prestressing technique in existing building green retrofits,this paper presents the compilation of nonlinear analysis program for externally prestressed beams based on both the geometrical nonlinearity type and the material nonlinearity type. Combined the static-load-experiment with 12 concrete beams prestressed with external tendons, the calculative results showed that this program matched relatively well with the experimental results.

scholarly journals Basic Properties of Duplex Stainless Prestressing Steel and Flexural Behaviors of Prestressed Concrete Beams Using the Tendon.

1999 ◽  
Vol 48 (10) ◽  
pp. 1199-1206 ◽  
Author(s):  
Shoji SHIRAHAMA ◽  
Suchun FANG ◽  
Takeshi KOBAYASHI ◽  
Toyoaki MIYAGAWA
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Prestressing Steel ◽  
Basic Properties

Shear tests on continuous prestressed concrete beams with external prestressing

2015 ◽  
Vol 16 (3) ◽  
pp. 428-437 ◽  
Author(s):  
Martin Herbrand ◽  
Martin Classen
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Shear Tests ◽  
External Prestressing

Average Concrete Stress Along Prestressing Steel in Prestressed Concrete Beams

PCI Journal ◽  
1960 ◽  
Vol 5 (2) ◽  
pp. 61-68
Author(s):  
Kenneth Kai-l Diao
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams ◽  
Prestressing Steel ◽  
Concrete Stress

PRESTRESSED CONCRETE BEAMS WITH A LONGITUDINAL CAVITY

PCI Journal ◽  
1973 ◽  
Vol 18 (1) ◽  
pp. 39-49
Author(s):  
A. A. Hamoudi ◽  
R. A. Bierweiler ◽  
M. K. S. Phang
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beams
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