Concentric compressive behavior of hybrid concrete–Stainless Steel Double-Skin Tubular Columns incorporating High Performance Concretes

Faculty Engineering Year: 2020
Type of Publication: ZU Hosted Pages:
Authors:
Journal: Thin-Walled Structures Elsevier Volume:
Keywords : Concentric compressive behavior , hybrid concrete–Stainless Steel    
Abstract:
This paper investigates experimentally and numerically concentric compressive behavior of hybrid concrete–Stainless Steel (SS) Double-Skin Tubular Columns (DSTCs) employing High Performance Concretes (HPCs). DSTCs can be prefabricated using outer-and-inner double tubes positioned concentrically sandwiching the concrete core in-between. However, the ordinary steel tubes beside the poor mechanical properties of Normal Concrete (NC) may not be appropriate for the environmental attack. This research proposes employing two durable SS tubes sandwiching HPCs in-between to gain satisfied performance. Beside NC, three types of HPCs were suggested: Engineered-Cementitious Composites (ECC), High-Strength Fiber-Reinforced Concrete (HSFRC) and High-Strength Concrete (HSC). Forty specimens were tested experimentally under axial monotonic compressive loading up to failure. The main variables were: void ratio created by inner tube, concrete core type and vertical stiffeners embedded in the concrete core. Parallel to those implemented experimentally, nonlinear three-dimensional Finite Element Models (FEMs) were set-up, executed and validated against experimental outcomes generating an accepted model with about 6% error. Results revealed that the studied parameters could significantly enhance the behavior in terms of load–displacement response, elastic/plastic appearance, ultimate capacity, and capturing ductile failure mode. Finally, both experimental and numerical results were extended deriving new formula could estimate the ultimate capacity with difference about 12%.
   
     
 
       

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Department Related Publications

  • Eshak Ibrahiem Eshak Hana, "Effect of Partial Fixity of Bearings on the Structural Behaviour of Bridges", The 13th International Conference on Civil, Structural and Environmental Engineering computing, Greece, 6-9 Sept. 2011., 2011 More
  • Eshak Ibrahiem Eshak Hana, "Solution of a Stability Problem of Segmental Box Girder Bridge", 4th Alexandria International Conference on Structural and Geotechnical Engineering, Vol.1, Alex. Univ., Alexandria, Egypt, April 2001., 2001 More
  • Eshak Ibrahiem Eshak Hana, "Stability of Plates Subjected to Concentrated and Partially Distributed Inplane Loads", 2nd Conference on Theoretical and Applied Mechanics, Academy of Scientific Research and Technology, Cairo, 1985., 1985 More
  • Eshak Ibrahiem Eshak Hana, "Design Charts for Bending Moments in Highway Bridge Slabs due to Moving Loads", 3rd Arab Structural Eng. Conference, Vol.2, Faculty of Eng., the United Arab Emirates Univ., March 1989., 1989 More
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