Experimental studies on the flexural behaviour of steel-concrete composite beams with transverse and longitudinal hidden girders. (15th January 2019)

• Record Type: Journal Article
• Authors: Yang, Jianjun; Chen, Huaguo; Hu, Shengliang; Gan, Vincent J.L.
• Is Part Of: Engineering structures. Volume 179(2019)
• Page Start: 583
• Page End: 594
• Publication Date: 2019-01-15
• Subjects: Composite beams -- Hidden girder -- Experimental investigation -- Flexural behaviour; TALHGs transverse and longitudinal hidden girders -- NBB natural bond break; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2018.11.025
• Languages: English
• ISSNs: 0141-0296

Abstract

Graphical abstract: Highlights: The details of a new steel-concrete composite beams with TALHGs are presented. A series of test results are presented to demonstrate the flexural behaviour of the beam. The impact of four key parameters is discussed. The importance of the top concrete slab thickness is analysed. Abstract: Traditional composite beams have the problem of large self-weights and require a considerable number of structural materials. In order to address these problems, this paper focuses on a new type of steel-concrete composite beam with transverse and longitudinal hidden girders (TALHGs). To investigate the flexural performance of such beams, five specimens with TALHGs were examined. The results indicate that the composite beams exhibit high flexural strength, good flexural rigidity and desirable ductility under monotonic load. Based on the test results, the influence of some key design parameters (e.g., concrete top slab thickness, concrete bottom slab thickness, the existence of a concrete bottom floor and H-shaped steel sizes) on the flexural performance of the composite beams were also evaluated. It is worth highlighting that this new design leads to significant savings in structural material demands (such as shear connectors, steel reinforcement, and concrete), which in turn saves the resource and construction cost.