scholarly journals Determination of inclination of strut and shear strength using variable angle truss model for shear-critical RC beams

2012 ◽  
Vol 41 (4) ◽  
pp. 459-477 ◽  
Author(s):  
Bing Li ◽  
Cao Thanh Ngoc Tran
Keyword(s):  
Shear Strength ◽  
Rc Beams ◽  
Truss Model ◽  
Variable Angle

scholarly journals Torsional Strength Determination of Ferrocement U-Wraps RC Beams with using Different Methods

2020 ◽  
Vol 8 (5) ◽  
pp. 4017-4023
Keyword(s):  
Single Equation ◽  
Experimental Program ◽  
Rc Beams ◽  
Time Saving ◽  
Torsional Strength ◽  
Truss Model ◽  
Soft Computing Method ◽  
Strength Determination ◽  
Computing Method

Retrofitting of distressed structures is a major concern worldwide for researchers particularly against torsion. Determination of torsional strength of retrofitted RC beams “U” wraps is again a difficult task. The experimental program is taken up with 30 rectangular beams tested under pure torsion. Torque of such a “U” wrapped RC beam with other dimension and material cannot be derived from these experimental results. To compute the same; analytical method based on softened truss model of Hsu is employed with modification on material properties. Both experimental and analytical methods are unable to provide a single equation to quantify the torsional strength. To overcome the same, soft computing method MARS and WASPAS method is employed in the present investigation. The methods are easy and time saving.

Shear strength of members without transverse reinforcement

1996 ◽  
Vol 23 (1) ◽  
pp. 30-41 ◽  
Author(s):  
Perry Adebar ◽  
Michael P. Collins
Keyword(s):  
Shear Strength ◽  
Design Method ◽  
Bending Moment ◽  
American Concrete Institute ◽  
Shear Capacity ◽  
Transverse Reinforcement ◽  
Theory Approach ◽  
Shear Design ◽  
Truss Model ◽  
Variable Angle

The variable angle truss model is extended to members without transverse reinforcement by introducing concrete tension ties perpendicular to concrete compression struts. The modified compression field theory approach of limiting the shear transfer across diagonal cracks is combined with the variable angle truss model to develop equations for the shear capacity of members without transverse reinforcement. These equations are the theoretical basis of tabulated values for members without stirrups in the general shear design method of the 1994 Canadian concrete code. This paper also presents the results from an experimental study in which 27 narrow (beam-like) wall elements, with significant longitudinal reinforcement and little or no transverse reinforcement, were subjected to combined axial tension, bending moment, and shear. The experimental results are compared with predictions from the 1994 Canadian concrete code, as well as the American Concrete Institute building code. Key words: building codes, reinforced concrete, shear strength, structural design, tension, tests, truss model.

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