An innovative concrete-steel structural system for long-span structure allowing a fast and simple erection
| Autor: | Piseth Heng, Hugues Somja, Nicolas Boissonnade, Franck Palas, Clemence Lepourry |
|---|---|
| Přispěvatelé: | Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), HEFR Fribourg, ingenova, Agence Nationale de la Recherche, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), ingenova [Saint Jacques de la Lande] |
| Rok vydání: | 2019 |
| Předmět: |
business.industry
Computer science Structural system Portal frame 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building and Construction Structural engineering Bending Span (engineering) 0201 civil engineering [SPI]Engineering Sciences [physics] 021105 building & construction Architecture Bending moment Formwork Joint (building) [SPI.GCIV.STRUCT]Engineering Sciences [physics]/Civil Engineering/Structures Safety Risk Reliability and Quality business ComputingMilieux_MISCELLANEOUS Beam (structure) Civil and Structural Engineering |
| Zdroj: | Structures Structures, Institution of Structural Engineers-Elsevier, 2019, 21, pp.55-74. ⟨10.1016/j.istruc.2019.04.016⟩ Structures, 2019, 21, pp.55-74. ⟨10.1016/j.istruc.2019.04.016⟩ |
| ISSN: | 2352-0124 |
| DOI: | 10.1016/j.istruc.2019.04.016 |
| Popis: | In achieving medium-to-long span slab, steel-concrete composite beams may offer an alternative over pre-stressed beams for the so-called disadvantages of the latter; for example the heavy weight of pre-stressed beams makes their handling expansive. However, the use of composite beams by concrete builders is still limited due to the lack of specific tools and skills for on-site erections and the need for a supplementary fire protection. This article presents an innovative steel-concrete moment resisting portal frame that overcomes these difficulties. It is composed of composite tubular columns, and a composite beam made of a U-shape steel profile used as permanent formwork to encase a concrete beam. The steel-concrete duality of the proposed beam allows an erection on site without any weld or bolt by a wise positioning of the construction joints. As only steel elements have to be handled on site, there is no need of heavy cranes. This system has been used to build a research center near Rennes, in France. As it is not covered in present norms, an experimental validation was required. In this paper, a series of full-scale experimental tests that have been performed in order to assess the global and the local behaviour of the frame and its connections are presented. A series of asymmetrical push-out tests were carried out in order to determine the ductility and resistance of shear connectors; one 4-point bending test was made to investigate the resistance under sagging bending moment; and, two tests of the beam-to-column joint were performed in order to validate a strut and tie design model of the joint. Finite element simulations have also been made in order to acquire more information for the development of the analytical models. |
| Databáze: | OpenAIRE |
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