Flexural behavior of cold-formed steel concrete composite beams

다국어 초록 (Multilingual Abstract)

Flexural behavior of thin walled steel-concrete composite sections as cross sections for beams is investigated by conducting an experimental study supported by applicable analytical predictions. The experimental study consists of testing up to failure, simply supported beams of effective span 1440 mm under two point loading. The test specimens consisted of composite box and channel (with lip placed on tension side and compression side) sections, the behavior of which was compared with companion empty sections. To understand the role of shear connectors in developing the composite action, some of the composite sections were provided with novel simple bar type and conventional bolt type shear connectors in the shear zone of beams. Two RCC beams having equivalent ultimate moment carrying capacities as that of composite channel and box sections were also considered in the study. The study showed that the strength to weight ratio of composite beams is much higher than RCC beams and ductility index is also more than RCC and empty beams. The analytical predictions were found to compare fairly well with the experimental results, thereby validating the applicability of rigid plastic theory to cold-formed steel concrete composite beams.

참고문헌 (Reference)

1 Nguyen, R. P., "Thin-walled cold-formed steel composite beams" 117 (117): 2936-2952, 1991

2 Chitra, R., "Studies on prefabricated cage reinforced steel-concrete composite beams" 12 (12): 27-37, 2011

3 Dubey, A.K, "Strength of thin walled steel concrete composite beams : Experimental study" 80 : 37-41, 1999

4 Kottiswaran, N., "Strength and behavior of thin walled cold formed steelconcrete composite beam under flexure" 8 (8): 73-90, 2007

5 IS, "Metallic materials-Tensile testing at ambient temperature"

6 Oehlers, D. J., "Flexural strength of profiled beams" 120 (120): 378-393, 1994

7 Chitra, R., "Flexural ductility of prefabricated cage reinforced steel-concrete composite beams" 12 (12): 719-729, 2011

8 Soundarajan, A., "Flexural behavior of concrete-filled steel hollow section beams" 14 (14): 107-114, 2008

9 안형준, "Experimental study on flexural strength of reinforced modular composite profiled beams" 국제구조공학회 8 (8): 313-328, 2008

10 Anwar Hossain, K. M., "Experimental and theoretical behavior of thin walled composite filled beams" 3 : 117-138, 2003

11 Sowmya, T., "Experimental and analytical studies on hat and U-shaped coldformed steel sections subjected to bending" 1301-1311, 2008

12 Anwar Hossain, K. M., "Designing thin-walled composite-filled beams" 158 (158): 267-278, 2005

13 Oehlers, D. J., "Composite profiled beams" 119 (119): 1085-1100, 1993

14 AS/NZS, "Cold Formed Steel Structures"

15 Yu, W. W., "Cold Formed Steel Design, 3rd Edition" John Wiley and Sons Inc. 2000