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Simulation of Blasting Demolition Using Three-Dimensional Bonded Particle Model  

Shin Byung-Hun (서울대학교 지구환경시스템공학부)
Jeon Seok-Won (서울대학교 지구환경시스템공학부)
Publication Information
Explosives and Blasting / v.23, no.1, 2005 , pp. 65-77 More about this Journal
Abstract
Reflecting the fact that there are increasing number of old high-story apartment structures in urban area, it is expected that the demand of blasting demolition will increase in the near future. It is of great important to make up for the insufficient empirical knowledge in blasting demolition through priori method such as computer simulation. Computer simulation of the blasting demolition involves complicated process. In the past domestic researches, two-dimensional bonded particle model was used to examine the overall demolition behavior of a five-story simple structure. It was observed that the two-dimensional simulation did not properly simulate the collapsing behavior of a structure mainly due to the reduced degree of freedom. In this study, three-dimensional simulation was tried. It consumed a great amount of calculation time, which limited the extent of the study. A few parameters, such as delay times, amount of charge at each hole, ball properties, were modified in order to check oui; their effect on the collapsing behavior. The differences were observed as expected but the collapsing behavior did not exactly coincide with the test blasting with a scaled model.
Keywords
발파해체;입자결합모델;붕괴거동;축소모형실험;
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