A STUDY OF INSTALLATION METHOD OF GROUNDING WIRES FOR A STRUCTURE OF A SEISMIC ISOLATED BUILDING IN CONSIDERATION OF ELECTROMAGNETIC ENVIRONMENT CAUSED BY LIGHTNING CURRENT

An optimal installation method of bonding wires for grounding a structure of a seismic isolated building by rubber isolators is investigated from a viewpoint of lightning surge. The following results are obtained from the research.1. The inductance of the bonding wire determines the transient response of the building. A parallel wiring is proposed to reduce the overvoltage instead of the conventional coil-shape wiring.2. The bonding wires should be installed at corner pillars for an equally distribution of the lightning current. It reasonably reduces an electromagnetic induction on information equipments.