An experimental study on the flexural behavior of cold-formed steel composite beams

The objective of this research was to develop a new composite material/system in structural civil engineering. To use of mechanical properties of bamboo-based panel and cold-formed steel, this study composite two kind of materials above-mentioned together utilizing structural adhesives. The research developed various of bamboo/steel composite members, such as composite slabs, composite walls, composite beams and composite columns. And the paper emphasized mechanical performance of bamboo/steel composite slabs and composite beams. Experimental studies on flexural behavior of 6 composite slabs and 9 composite beams were carried out and the failure process, failure modes and failure mechanism were investigated. Experiment results indicates that the bamboo plywood and cold-formed steel can form an excellent composite cross-section; Load vs. mid-span deflection curves of composite slabs and composite beams show linear on serviceability limit state. The maximum ultimate strength of composite slabs and beams have reached 30.0 kN•m and 36.13 kN•m respectively. The study shows that bamboo-steel composite members have good prospects in building structures of China.

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Experimental study on flexural behavior of ECC-concrete composite beams reinforced with FRP bars

Composite Structures ◽

10.1016/j.compstruct.2018.10.026 ◽

2019 ◽

Vol 208 ◽

pp. 454-465 ◽

Cited By ~ 16

Author(s):

Wenjie Ge ◽

Ashraf F. Ashour ◽

Dafu Cao ◽

Weigang Lu ◽

Peiqi Gao ◽

...

Keyword(s):

Experimental Study ◽

Composite Beams ◽

Flexural Behavior ◽

Frp Bars

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Experimental study on the flexural behavior of steel tube slab composite beams and key parameters optimization

Advances in Structural Engineering ◽

10.1177/1369433219844335 ◽

2019 ◽

Vol 22 (11) ◽

pp. 2476-2489 ◽

Cited By ~ 1

Author(s):

Pengjiao Jia ◽

Wen Zhao ◽

Yongping Guan ◽

Jiachao Dong ◽

Qinghe Wang ◽

...

Keyword(s):

Experimental Study ◽

Bearing Capacity ◽

Composite Beams ◽

Steel Tube ◽

Design Guidelines ◽

Reinforcement Ratio ◽

Flexural Behavior ◽

Flexural Capacity ◽

Design Elements ◽

Steel Bolts

This work presents an experimental study on the flexural behavior of steel tube slab composite beams subjected to pure bending. The main design elements considered in the work are the flange thickness, reinforcement ratio of high strength bolts, spacing between the tubes, and transverse patterns of the tube connections. Based on nine flexural experiments on simply supported steel tube slab specimens, the failure process and crack development in steel tube slab specimens, and their load–deflection curves are investigated. The results of the laboratory tests show that the welding of the bottom flange significantly improves the flexural capacity of the steel tube slab structure. In addition, a lower concrete’s compressive strength improves the ductility of the steel tube slab specimens. Moreover, the flexural capacities predicted from the design guidelines are in good agreement with the experimental test results. Finally, based on the numerical simulations using the ABAQUS software, a numerical model is established to further investigate the effect of the additional parameters on the flexural capacity of steel tube slab structures. The numerical results suggested that the diameter of the steel bolts and the reinforcement ratio have a limited effect on the flexural bearing capacity of the steel tube slab beams, and the ultimate bearing capacity increases linearly along with increase in the diameter of the steel bolts and the reinforcement ratio in a certain range.

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