Finite Element Analysis of the Seismic Response Behavior of High-Rise Chimney under Explosion Loads
With the implement of energy-saving and reducing discharge policy in China in recent years, more and more chimneys are required to be demolished in many cities ,as well as in many industrial mining enterprises.During the blasting demolition of a high-rise chimney, after the appearance of a blasting cut, the chimney can keep its immobility in one second or two seconds before its body begins to fall down. There is a less study on the seismic response behavior of the stand-up high-rise chimney under explosion loads, but this period of time can determine whether the chimney is blasted safely and successfully. The explosion loads of blasting cut shall have a blasting vibration, danger of which to theblasting chimney was researehed scantly. To research the influence of explosion loads on a blasting chimney, with the numerical simulation technology, this article made a transient dynamics analysis on the seismic response behavior of a 45-meter-high brick chimney under explosion loads. With the combination of the results of the site blasting survey, the conclusion is that explosion loads of blasting cut can be the main reason that induces the premature rapture or the reverse collapse of a chimney. And the chimney near the two-thirds height could be damaged by explosion loads. During the blasting demolition of a weathered and low strength brick chimney, single explosive charge and blasting delay interval should be well-chosen especially.
high-rise chimney finite element analysis seismic response behavior explosion loads
WANG Bin ZHAO Fujun MA Haipeng LING Daneng
School of Energy and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,H School of Energy and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,H School of Resource and safety Engineering,Central South University,Changsha 410083,Hunan,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1066-1069
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）