Influence of the wind effects on the collapsing process of chimney in blasting
ZHANG xian-tang1,2 WANG zhao-dong1 WANG hong-li1 WANG lai1
1. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;2. Shandong University of Science and Technology, Qingdao 266590, Shandong, China
Abstract：In the process of chimney blasting demolition, along wind and across wind are produced on the chimney under the function of the wind load. The effects of across wind include the horizontal wind direction swirl, the resonance effect and the destabilizing under horizontal wind direction air motive force. The long time action of the wind load on chimney blasting demolition lead to sloping and destabilizing. The process of the sloping and destabilizing of the chimney caused by wind-induced vibrations in the process of chimney blasting demolition is revealed, and analyzed the blasting demolition deviation of chimney collapsing direction as a result of the effect of three kinds of wind of different direction. According to the calculation, the effect of along wind resonance is significant, the static wind effect is relatively small, the effect of across wind resonance has a little stronger randomicity. Also, relevant technological measures adopted to consider the effect of wind in the process of chimney blasting demolition is obtained.
张宪堂;;王兆东;王洪立;王来. 爆破拆除烟囱倒塌过程中风效应影响研究[J]. , 2013, 32(13): 133-136.
ZHANG xian-tang;WANG zhao-dong WANG hong-li WANG lai. Influence of the wind effects on the collapsing process of chimney in blasting. , 2013, 32(13): 133-136.
2013, Vol. 32 
