Research on Mechanical Properties of Steel-Concrete Composite Panels Under Impact Loading
In order to investigate and analyze the impact resistance of steel-concrete composite panels,ABAQUS software was used to establish the finite element(FE)models of single-layer steel-concrete composite(HSC)panels and double-skin steel-concrete composite(SCS)panels.The reliability of the finite element modeling was validated against the results of drop-hammer impact test.Firstly,the whole impact process of this type of members was analyzed.Secondly,the impact resistance of HSC panels was compared with that of SCS panels from three aspects of dynamic response,failure mode and energy absorption coefficient.Finally,the influence of the steel plate ratio and impact height on the dynamic responses of members were emphatically discussed and the impact force time-history curve was simplified.The results showed that the FE model could reasonably predict the impact force and deflection of steel-concrete composite panels.The whole impact process of this type of members could be divided as four stages.The impact resistance of SCS panels was superior to HSC panels.The simplified impact-force history suggested in this work could be effectively employed in the impact resistance design of this kind of members.
steel-concrete composite panelimpactfinite element analysiswhole impact processdynamic responsesimplified impact force
NETL
NSTL
万方数据
维普
