Mixed Formulation of Nonlinear Steel-Concrete Composite Beam Element
- 1 March 2000
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Structural Engineering
- Vol. 126 (3), 371-381
- https://doi.org/10.1061/(asce)0733-9445(2000)126:3(371)
Abstract
This paper presents an inelastic beam element for the analysis of steel-concrete girders with partial composite action under monotonic and cyclic loads. The element is derived from a two-field mixed formulation with independent approximation of internal forces and transverse displacements. The nonlinear response of the steel and concrete component of the girder is based on the section discretization into fibers with uniaxial hysteretic material models for the constituent materials. The partial interaction between concrete deck and steel girder through shear connectors is accounted for by an interface model with distributed force transfer characteristics. A direct state determination algorithm for the implementation of the composite element in a general purpose nonlinear analysis program is presented, and the stability characteristics of the algorithm are discussed in conjunction with the selection of appropriate force and displacement interpolation functions. The validity of the model is established by co...This publication has 14 references indexed in Scilit:
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