Experimental study on the rigidity behavior of Prestressed Steel Reinforced Concrete beams

2011 ◽  
Author(s):  
Zhao Guodong ◽  
Fu Chuanguo ◽  
Lu Xilin
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Steel Reinforced Concrete

Crack Width Calculation of Steel Reinforced Concrete Beams Considering the Bond-Slip

2012 ◽  
Vol 166-169 ◽  
pp. 1395-1398
Author(s):  
Cao Xiu Li ◽  
De Jian Shen ◽  
Pei Ling He ◽  
Xian Feng Dong ◽  
Hong Fei Zhang
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Crack Width ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
The Other ◽  
Bond Slip ◽  
Steel Reinforced Concrete ◽  
Slip Effects ◽  
Current Standards

Bond-slip performance between section steel and concrete has effect on crack width of steel reinforced concrete（SRC）beams based on experimental results. Current standards about SRC structures do not involve bond-slip effects when calculating the crack width of SRC beams, and this is not valid exactly . This article describes a new method of crack width calculation for SRC beams, which considering the bond-slip effects on crack width. Crack width of SRC beams are divided into two parts: one part ignoring the bond-slip between steel and concrete, and the other part considering additional crack width caused by the bond-slip. The total crack width is the sum of the two parts. Results show that the proposed method in this article is coincide with experimental study.

Analysis on Deformation of Pre-Splitting Steel Reinforced Concrete Beams Strengthened by Prestressed CFRP

2011 ◽  
Vol 243-249 ◽  
pp. 929-933
Author(s):  
Na Ha ◽  
Lian Guang Wang ◽  
Shen Yuan Fu
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Bending Moment ◽  
Reinforced Concrete Beams ◽  
Steel Reinforced Concrete ◽  
Cfrp Sheets ◽  
Deformation Curves ◽  
Prestressed Cfrp Sheets ◽  
Theoretical Results

In order to improve the bearing capacity of SRC which is related with deformation and stiffiness, SRC beams should be strengthened by CFRP. Based on the experiment of six pre-splitting steel reinforced concrete beams strengthened with (Prestressed) CFRP sheets, the deformation of beams are discussed. Load-deformation curves are obtained by the experiment. Considering the influence of intial bending moment on SRC beams, the calculated deformation formulas of SRC beams strengthened by (Prestressed) CFRP are deduced. The results showed that the load-deformation curves of normal and strengthened beams respectively showed three and two linear characteristics. The theoretical results which calculated by the formulas of deformation are well agreement with the experimental results.

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