Analysis of Composite Beams with Incomplete Interaction I.

Theoretical study of bending stiffness of two-layered composite beams

Abstract

This report presents theoretical examination of three methods for bending stress analysis of symmetrical two-layered simply supported beams with incomplete interaction. The methods were Newmark's theoretical method, Kamiya's numerical calculation method and Kamiya's approximation method. In order to simply calculate deformation of the beam by Newmark's method, equations of relationship between the deformation and stress of the beam were developed. Kamiya's numerical calculation method was improved for accuracy and stability. In order to compute the value of stress, the approximation was improved. Numerical examinations were conducted. The validity of the approximation method was confirmed. The relationship between the number of shear connectors and error in deflection calculated by Newmark's method was obtained.