Shear Strength of Reinforced Concrete T-Beams without Transverse Reinforcement

2006 ◽  
Vol 103 (5) ◽  
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Transverse Reinforcement

scholarly journals Shear Strength Model for Reinforced Concrete Columns with Low Transverse Reinforcement Ratios

2014 ◽  
Vol 17 (10) ◽  
pp. 1373-1385 ◽  
Author(s):  
Cao Thanh Ngoc Tran ◽  
Bing Li
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Axial Load ◽  
Concrete Columns ◽  
Transverse Reinforcement ◽  
Reinforced Concrete Column ◽  
Reinforced Concrete Columns ◽  
Existing Structures ◽  
Reversed Cyclic ◽  
Constant Axial Load

This paper introduces an equation developed based on the strut-and-tie analogy to predict the shear strength of reinforced concrete columns with low transverse reinforcement ratios. The validity and applicability of the proposed equation are evaluated by comparison with available experimental data. The proposed equation includes the contributions from concrete and transverse reinforcement through the truss action, and axial load through the strut action. A reinforced concrete column with a low transverse reinforcement ratio, commonly found in existing structures in Singapore and other parts of the world was tested to validate the assumptions made during the development of the proposed equation. The column specimen was tested to failure under the combination of a constant axial load of 0.30 f' c A g and quasi-static cyclic loadings to simulate earthquake actions. The analytical results revealed that the proposed equation is capable of predicting the shear strength of reinforced concrete columns with low transverse reinforcement ratios subjected to reversed cyclic loadings to a satisfactory level of accuracy

scholarly journals Experimental analysis of the concrete contribution to shear strength beams without shear reinforcement

2017 ◽  
Vol 10 (1) ◽  
pp. 160-172
Author(s):  
M. S. Samora ◽  
A. C. DOS Santos ◽  
L. M. Trautwein ◽  
M. G. Marques
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Resistance Mechanisms ◽  
Experimental Program ◽  
Transverse Reinforcement ◽  
Longitudinal Reinforcement ◽  
Reinforced Concrete Structure ◽  
Empirical Formulas ◽  
Limit States ◽  
Domain 3

Abstract There are many theories and empirical formulas for estimating the shear strength of reinforced concrete structures without transverse reinforcement. The security factor of any reinforced concrete structure, against a possible collapse, is that it does not depend on the tensile strength of the concrete and the formation of any collapse is ductile, thus giving advance warning. The cracking from tensile stress can cause breakage of the concrete and should be avoided at all cost, with the intent that any such breakage does not incur any type of failure within the structure. In the present research study, experiments were performed in order to analyze the complementary mechanisms of the shear strength of lattice beams of reinforced concrete frames without transverse reinforcement. The experimental program entails the testing of eight frames that were subjected to a simple bending process. Two concrete resistance classes for analyzing compressive strength were considered on the construction of frames, 20 MPa and 40 MPa. To resist the bending stresses, the beams of the frames are designed in domain 3 of the ultimate limit states. Different rates and diameters of longitudinal reinforcement were used, 1.32% and 1.55% with 12.5 mm diameter and 16.0 mm in longitudinal tensile reinforcement. From the obtained results, an analysis was made of the criteria already proposed for defining the norms pertinent to the portion of relevant contribution for the shear resistance mechanisms of concrete without the use of transverse reinforcement and the influence of the concrete resistance and longitudinal reinforcement rates established in the experimental numerical results.

Analysis on the minimum shear strength of reinforced concrete elements without transverse reinforcement

2014 ◽  
Vol 102 (42) ◽  
pp. 231-238
Author(s):  
David Fernández-Montes ◽  
Enrique González-Valle ◽  
Elena Díaz-Heredia ◽  
Jorge Ley
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Transverse Reinforcement ◽  
Concrete Elements
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