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Shear strength of connections between open and closed steel-concrete composite sandwich structures

  • Kim, Woo-Bum (Department of Architectural Engineering, Kongju National University) ;
  • Choi, Byong Jeong (Department of Architectural Engineering, Kyonggi University)
  • Received : 2010.04.02
  • Accepted : 2011.02.21
  • Published : 2011.03.25

Abstract

The behavior of connections between open sandwich slabs and double steel skin composite walls in steel plate-concrete(SC) structure is investigated by a series of experimental programs to identify the roles of components in the transfer of forces. Such connections are supposed to transfer shear by the action of friction on the interface between the steel surface and the concrete surface, as well as the shear resistance of the bottom steel plate attached to the wall. Experimental observation showed that shear transfer in slabs subjected to shear in short spans is explained by direct force transfer via diagonal struts and indirect force transfer via truss actions. Shear resistance at the interface is enhanced by the shear capacity of the shear plate as well as friction caused by the compressive force along the wall plate. Shear friction resistance along the wall plate was deduced from experimental observation. Finally, the appropriate design strength of the connection is proposed for a practical design purpose.

Keywords

Wall-slab connections;steel plate-concrete strucutre;composite wall;shear plate;SC structure

Acknowledgement

Grant : Modularization of Nuclear Power Plant Construction

Supported by : Electric Power Industry Technology Evaluation and Planning (ETEP)

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