Abstract
Demolition works of steel frame buildings, such as factory buildings for steel making plants and other heavy industries, will increase markedly, thus entailing the need of safe and economic technique including blasting demolition methods.Blasting demolition technology for steel frame structures consists mainly of the explosive cutting technique of steel conponents, the design method for the collapse, and the reduction method of air blast especially in urban area. This study focuses on the design method for collapsing down steel frame structure by blasting. In this study, an example of the design methods for the collapse was demonstrated, and an existing steel building was razed down experimentally in various collapsing patterns (vertical collapse and holizontal collapse). Through this study and experiments, we got useful data and instructive information about blasting demolition of steel structure, which would be helpful to realize more effective and safer demolition works
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