In order to study the high-rise buildings effect under the condition of the effect of the lightning strike

high-rise buildings

this study create the typical high-rise buildings according to the size of real buildings building model

then the actual detected lightning current inject at the high probability location

so current transmission and space magnetic field distribution simulation can be analyzed.The study summarizes the characteristics of lightning attachment point characteristics of different positions in building metal frame

the characteristics changes of current transmission in time domain

and the qualitative and quantitative changes of the magnetic field in different space positions.The simulation results show that the magnetic intensity of the wave waveform reaches its peak at 10～50 μs

and then decreases gradually to 200 μs.It is found that the current variation trend on vertical structure column are more obvious then the horizontal position which is mainly by the dispersion of flow effect.Qualitative analysis shows that the parapet wall and the high-level frame have the acute intensity of the magnetic field

quantitative analysis also proves the space intensity of magnetic field near the external frame is stronger than the internal field at same height

and the magnetic strength of the inner core is consistent with the requirement of specification for computation center field.The simulation results provide reference for lightning protection design and lightning protection.