Elastic Analysis of Steel-Concrete Composite Beams with Partial Interaction

Abstract The paper presents an exact analytical method for the elastic analysis of steel-concrete composite beams with partial interaction. Accepting basic assumptions Newmark model and adopting axial force in concrete slab as main unknown, second order nonhomogeneous differential equation element interaction is derived. Further, complete solutions simply supported fixed-ended subjected to concentrated uniform loads respectively, are developed. solution homogeneous determined by imposing proper Dirichlet or Neumann boundary conditions depending on static scheme element. particular then derived considered loading conditions. It shown that internal associated can be expressed a fraction under full through non-dimensional function f(aL) which takes into account connection’s stiffness, mechanical properties also length Moreover, included flexibility-based approach derive force-displacement relations beam For resulted 2-noded beam-column 6DOF, stiffness matrix derived, showing action may at level means series correction factors applied standard full-interaction coefficients. A numerical example provided demonstrate accuracy performance proposed method. Within range, predicted load-midspan deflection curve very good agreement both experimental other results retrieved from international literature. parametric study was conducted investigate influence shear connection degree beam’s midspan were compared those computed using code provisions.