Research On Of The Composite Beam Dynamic Functionality Under Impact Loads

The steel-concrete composite beam is a collaborated structure of steel and concrete.It has the advantages of both steel and concrete,which an perform the material qualities of steel of tensile strength and concrete of compressive to the full. This kind of structure has such advantage as high load-bearing capacity ,excellent plasticity and elasticity, good comprehensive benefits and efficient construction.With a series of advantages, it can be widely used as the beam support structure in various architectures such as in super high building, aworkshops, bridges, civil air defence engineering. In civil air defence engineering, its design is required not only to meet the need of normal functions but also to reach the standard of resistance security in wartime, the functionality of forced loads such as resistance again designate-class shock wave of atomic explosion.As a beam architecture, once it's destroyed,the consequence is very serious. therefore, if necessary , dynamic functionality should be asked into consideration,whith was a hotspot in the study of structure of dynamic performances under impact loads in past years . International scholars have done adequate research on steel-concrete composite beam static function, but the research under impact loads is very little or rather almost blank.Through an impact experiment on six steel-cocrete composite beams (each one zoomed 1/4 in proportion), this paper has dm(?) wn the time curves of key parts of changes and harassments based on it,mainframe universal' finite element calculating software of ANSYS/LS-DYNA is used to count the steel-cocrete composite beams of dynamic performances under different impact loads. This paper offers the study methods of experimental data and finite element for further research on such architecture.Meanwhile.it's also a reference for architects when designing relevant structures.