Punching shear resistance of steel–concrete–steel sandwich composite shell structure

Abstract A novel concept of steel–concrete–steel (SCS) sandwich conical structure has been developed for the Arctic offshore platforms. In this structure, punching shear resistance to localized patch loading is the main concern that considers the high pressure zones due to nonuniform distribution of the ice contact pressure. In this paper, quasi-static tests on nine large scale SCS sandwich shell structure were firstly carried out to investigate the ultimate strength behavior of the SCS sandwich shell structure under patch loading. Based on these test results, the influences of different parameters on the ultimate resistance were discussed and analyzed. These studied parameters are composite action, steel shell thickness, spacing of connector, strength of concrete core, and curvature of the sandwich shell. Theoretical models were developed to predict the shear resistance of the SCS sandwich shell structure. The innovations of the developed models include developing formulae to predict the resistances of the connector used in the sandwich shell structure, redefining the critical perimeter to analyze the punching shear resistance of SCS sandwich shell, and modifying the formulae in Eurocode 2 to calculate the punching shear resistance. The accuracy of the developed prediction models were checked and confirmed by nine reported tests and 11 tests in the literature. Finally, design recommendations on the punching shear resistance of the SCS sandwich shell were offered based on the discussions and validations.

[1]  J. Y. Richard Liew,et al.  Lightweight steel-concrete-steel sandwich system with J-hook connectors , 2009 .

[2]  Min-hong Zhang,et al.  Push-out tests on J-hook connectors in steel–concrete–steel sandwich structure , 2014 .

[3]  Andrew Palmer,et al.  High pressure zone formation during compressive ice failure , 2001 .

[4]  Yonghui Wang,et al.  Ultimate strength of steel–concrete–steel sandwich panels under lateral pressure loading , 2016 .

[5]  Xudong Qian,et al.  Ultimate strength behavior of curved steel–concrete–steel sandwich composite beams , 2015 .

[6]  Chan Ghee Koh,et al.  Impact tests on steel–concrete–steel sandwich beams with lightweight concrete core , 2009 .

[7]  Janet K. Pitman,et al.  Assessment of Undiscovered Oil and Gas in the Arctic , 2009, Science.

[8]  Ian Jordaan,et al.  Mechanics of ice–structure interaction , 2001 .

[9]  Min-hong Zhang,et al.  Flexural performance of fiber-reinforced ultra lightweight cement composites with low fiber content , 2013 .

[10]  K. F. Chung,et al.  Composite column design to Eurocode 4 : based on DD ENV 1994-1-1: 1994 Eurocode 4: design of composite steel and concrete structures: part 1.1: general rules and rules for buildings , 1994 .

[11]  J. Y. Richard Liew,et al.  Tensile resistance of J-hook connectors used in Steel-Concrete-Steel sandwich structure , 2014 .

[12]  D. A. Nethercot,et al.  Designer's guide to EN 1993-1-1 : Eurocode 3: Design of Steel Structures : General Rules and Rules for Buildings /L. Gardner and D. A. Nethercot , 2005 .

[13]  Devinder S. Sodhi,et al.  Nonsimultaneous crushing during edge indentation of freshwater ice sheets , 1998 .

[14]  X. Qian,et al.  Applications of ultra-lightweight cement composite in flat slabs and double skin composite structures , 2016 .

[15]  A W Beeby,et al.  CONCISE EUROCODE FOR THE DESIGN OF CONCRETE BUILDINGS. BASED ON BSI PUBLICATION DD ENV 1992-1-1: 1992. EUROCODE 2: DESIGN OF CONCRETE STRUCTURES. PART 1: GENERAL RULES AND RULES FOR BUILDINGS , 1993 .

[16]  J. Y. Richard Liew,et al.  Steel–Concrete–Steel sandwich slabs with lightweight core — Static performance , 2011 .

[17]  J. Y. Richard Liew,et al.  Ultimate strength behavior of steel-concrete-steel sandwich beams with ultra-lightweight cement composite, Part 1: Experimental and analytical study , 2014 .

[18]  H. Marzouk,et al.  Strengthening of Two-Way Slabs Using Steel Plates , 2002 .

[19]  Jack P. Moehle,et al.  "BUILDING CODE REQUIREMENTS FOR STRUCTURAL CONCRETE (ACI 318-11) AND COMMENTARY" , 2011 .

[20]  Min-hong Zhang,et al.  Experimental and analytical study on ultimate strength behavior of steel–concrete–steel sandwich composite beam structures , 2015 .