Keywords : Negative moments
Engineering and Technology Journal,
2009, Volume 27, Issue 1, Pages 53-71
This work deals with the behavior of structural continuous composite steelconcrete
beams, which are widely used in building and bridge constructions. Therefore
the structural behavior of composite beams under negative moment is a significant
subject. However experimental tests in this field are very rare and information about the
efficiency of shear connection when the slab is under tension are really few.
In the present research, available experimental tests on composite steel-concrete
beams under negative bending are theoretically analyzed using the finite element
software ANSYS. ANSYS computer program is a large-scale multipurpose finite
element program which may be used for solving several cases of engineering analyses.
The proposed three dimensional model is able to simulate the overall flexural
behavior of composite beams. This covers; load-deflection behavior, longitudinal slip at
the steel-concrete interface, and distribution of shear studs. The reliability of the model
is demonstrated by comparison with available experiment and alternative numerical
analysis which shows 9-10% difference.