Calculation for the lightning surge current distribution in reinforced concrete building caused by direct strikes

摘要

Lightning surges appear in the telecommunication cables, power lines, and grounding lines when the direct lightning is stroke telecommunication center building. These might be a cause of trouble for telecommunications equipment. We should study the current distribution in the building due to the direct stroke, and observe the lightning surge current distribution in order to improve the immunity of telecommunication system. In this report, the beams and pillars in building were assumed by the equivalent radius column conductors, which have same surface area of the complex reinforced concrete beams and pillars. The building structure was modeled lattice structure with the column conductors. The lightning surge current at the beams and pillars were calculated with this model, and the results are compared with the observed results. The deviation between calculated and observed value is around 200%. Further study to reduce calculation error is needed to develop the effective model for analysis.