Research Of Steel Beam To Concrete Wall Joints On Behavior In Hybrid High Rise Buildings Under Lateral Loads

At present, the steel-concrete hybrid structures have been applied to the tall buildings more and more widely on our country. The poor study on seismic behavior of structures does not meet the needs of its development speed. There is a simple formula to calculate the axial force of the steel beam to concrete wall joint under lateral loads in current construction specifications, but it is too conservative to waste because of disregarding the effect of slab. This paper will study on this problem with regarding the integrated action of slab and steel beam.By analyzing the basic characteristic of the steel-concrete high rise hybrid building and utilizing a general finite element analyzing software, there are mangy 3D models established to research the integrated action of slab and steel beam in this paper. Parametric analysis on the ratio of the axial force through steel beam to concrete wall to the total force is taken. The distance of anchoring bar, the section factor influence the ratio of the axial force through steel beam to concrete wall to the total force simply, while the width of concrete core, the width-thickness ratio of the concrete wall, the location of steel beam influence complexly. Anchored with the requirement of current construction specifications, the ratio of the axial force through steel beam to concrete wall to the total force is still the same when just changing the diameter of the anchoring bar. Finally an approach of calculating the axial fore of the steel beam to the concrete wall joint is generated for the engineering practice.