A Study on the Collapse Behavior in the Explosive Demolition of a High Aspect Ratio Asymmetric Structure
In blasting demolition, a method would be chosen among many depends on shape and system of a structure and its surround.To demolish using explosives a structure, which is asymmetric and with high aspect ratio, pre-weakening, explosive locations, detonating delay, and surround conditions are needed to be considered in front to design blasting demolition plan.In this study, to over-turn asymmetric and high aspect ratio structure in safe, a simulation using soft ware named Extreme Loadings for Structures, ELS, had performed.In results, it is achieved opti mized pre-weakening shapes and locations, which prevent kick back motion of the structure when it collapse, by analyzing moment distribution caused by pre-weakening.And of structural collapse and by minimizing asymmetric structures torsional moment.Also, after the demolition, simulation results are also compared with actual collapse behavior.In results, it is confirmed the accuracy of collapse behavior simulation results, and in blasting demolition, kick back motion can be con trolled by adjusting pre-weakening shape and location, and the torsional moment of an asymmet ric structure also can be solved by optimizing detonation locations and its time intervals.
blasting demolition asymmetry structure with high aspect ratio ELS collapse behavior over turn optimized design
Young-Suk Song Min-Su Jung Dong-Wol Jung Won-Ho Hur
Hanwha corporation business development team,Korea OBPENG senior engineer,Korea Department of Resources & Mineral engineering,Dong-A University,Korea
国际会议
珠海
英文
209-221
2013-11-22（万方平台首次上网日期，不代表论文的发表时间）