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Steel and Composite Structures Volume 25, Number 5, December10 2017 , pages 523-534 DOI: https://doi.org/10.12989/scs.2017.25.5.523 |
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Mechanical features of cable-supported ribbed beam composite slab structure |
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W.T. Qiao, D. Wang and M.S. Zhao
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| Abstract | ||
| Cable-supported ribbed beam composite slab structure (CBS) is proposed in this study. As a new cable-supported structure, it has many merits such as long span availability and cost-saving. Inspired by the previous research on cable-supported structures, the fabrication and construction process are developed. Pre-stress design method based on static equilibrium analysis is presented. In the algorithm, the iteration convergence can be accelerated and the calculation result can be kept in an acceptable precision by setting a rational threshold value. The accuracy of this method is also verified by experimental study on a 1:5 scaled model. Further, important parameters affecting the mechanical features of the CBS are discussed. The results indicate that the increases of sag-span ratio, depth of the ribbed beam and cable diameter can improve the mechanical behavior of the CBS by some extent, but the influence of strut sections on mechanical behavior of the CBS is negligible. | ||
| Key Words | ||
| cable-supported ribbed beam composite slab; spatial structure; pre-stress; fabrication; mechanical features; sag-span ratio | ||
| Address | ||
| W.T. Qiao: School of Civil Engineering, Shi Jiazhuang Tiedao University, 17 North 2nd Ring Road, Shi Jiazhuang, Hebei, China D. Wang: TRC Engineers, Inc, 8550 United Plaza Blvd., Suite 502, Baton Rouge, LA, United States M.S. Zhao: School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore | ||