Nonlinear finite element analysis of LSCC slabs to find effectiveness of three connection schemes

Abstract

The aim of this paper is to compare the structural performance of Laced Steel Concrete Composite (LSCC) slab formed by laterally connecting LSCC units. Performance of three connection schemes are studied based on nonlinear response of the slab for incremental static loads. The analysis is carried out using finite element method. The unique features of LSCC unit responsible for its superior structural performance are described. A brief description of the connection schemes is presented along with the criteria followed for evolving them. Following this, details of the finite element models developed for the slab are presented with emphasis on describing the nonlinear behavior of steel, concrete and the interface conditions. The performance of the connection schemes is evaluated based on the nonlinear response of the slab in terms of peak load, ductility and support rotation. The LSCC slab formed by lateral shifting of the cover plates is found to exhibit far superior performance.