NUMERICAL INVESTIGATION ON PERFORMANCE OF COMPOSITE BEAM-COLUMN CONNECTION SUBJECTED TO IMPACT LOAD

Abstract

In structural engineering, beam-column connections are that portion of the column within the depth of the deepest beam that frames into the column and comprises the joint plus portion of the column. Composite beam-column connections are structural members composed of two or more dissimilar materials joined together to acts as a units and composite beam connected to steel and concrete. It has many advantages in terms of their high strength, stiffness and full significant of buildings. Investigations occur regarding the composite beam-column connection under impact load of slab effect and connection type on the impact resistance of structural steel substructure's resistance to impact. On the other hand, performance composite beam-column connection subjected to impact load lack sufficient research. This inquiry aimed to investigate the implementation of composite beam-column connection having various specimen subjected to impact loading. The parameters would considered in the study are angle of weight, grade of bolt, concrete strength, bolt arrangement and span depth ratio (length to diameter). The finite element program ABAQUS software package are be used to construct a finite model under impact load. The results of finite element analysis are comparing with experimental test to obtain the validity of the finite element model. The analysis result assures that as bolt grade increases roughly twice, mid span displacement decreases by 3.3% for higher grade bolts while ultimate bearing capacity increases by 5.5%. Besides The mid span displacement and ultimate bearing capacity is decreased by nearly 48.07% and 55.45% when angle of weight is increased by 30o and twice respectively. In addition, the carrying capacity of spacemen is greatly impacted by high strength concrete, as can be observed from the overall concrete strength. Conversely, the bearing capacity and mid-span displacement are not significantly affected by weak concrete. However, as concrete strength increases by 40% the corresponding mid-span displacement decreased by 0.47%, and ultimate capacity increased by 11.9%.