Abstract
This study aims to investigate experimentally mechanical characteristics of S-CFT deep beam under bending-shear through symmetrically three-point loading test method with a constant axial load. Selected test parameters are shear span and the width-to-thickness ratios, which are ranging from 1.0 to 1.5 and 62.5 to 200, respectively. As the results, observed failure modes of the specimens with width-to-thickness ratio being 200 were local buckling of steel tube associated with shear failure of in-filled concrete between two supports. No effect of the constant axial load on bending-shear capacities can be found. The experimental strength of the specimens with shear span ratio between 1.0 and 1.5 can be predicted by the accumulative strength being composed of RC deep beam and web steel plate.
Highlights
The detailed mechanical behavior of S-CFT member with the smaller width-to-thickness ratio is given in Ref. [1]
This study aims to investigate bending-shear characteristics of deep squared CFT(SCFT) beam, the width-to-thickness ratios of which are 62.5 and 200, through symmetric three-point loading test methods with a constant axial load
Eight specimens of concrete filled square steel tubular(S-CFT) deep beam subjected to bending-shear under constant axial load were examined
Summary
The CFT member holds good deformability owing to confined strength between the steel tube and filled concrete. Reviewing the past studies on concrete filled square steel tubular, S-CFT, member, we can first find investigations of S-CFT member under bending-shear and axial load[2,3]. Nakahara[5] conducted flexural behavior of S-CFT beam column under two parameters, namely single and double curvature. Width-to-thickness ratios being less than 50 of square steel tube of S-CFT is mainly discussed in the previously research. The detailed mechanical behavior of S-CFT member with the smaller width-to-thickness ratio is given in Ref. This study aims to investigate bending-shear characteristics of deep squared CFT(SCFT) beam, the width-to-thickness ratios of which are 62.5 and 200, through symmetric three-point loading test methods with a constant axial load. Method to predict bending shear capacity with the large width-to-thickness ratio is given
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
