Influence of wind load acted on tall chimney in directional blasting

Han Fang; Zhong Dong-wang; Han Xin-xing; Zeng Xiang-long; Tang Yu-cheng; Liu Ying

doi:10.11883/1001-1455(2014)05-0554-06

Volume 34 Issue 5

Dec. 2014

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Article Navigation > Explosion And Shock Waves > 2014 > 34(5): 554-559

Han Fang, Zhong Dong-wang, Han Xin-xing, Zeng Xiang-long, Tang Yu-cheng, Liu Ying. Influence of wind load acted on tall chimney in directional blasting[J]. Explosion And Shock Waves, 2014, 34(5): 554-559. doi: 10.11883/1001-1455(2014)05-0554-06

Citation:

Han Fang, Zhong Dong-wang, Han Xin-xing, Zeng Xiang-long, Tang Yu-cheng, Liu Ying. Influence of wind load acted on tall chimney in directional blasting[J]. Explosion And Shock Waves, 2014, 34(5): 554-559. doi: 10.11883/1001-1455(2014)05-0554-06

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Influence of wind load acted on tall chimney in directional blasting

doi: 10.11883/1001-1455(2014)05-0554-06

1.
Department of Engineering Mechanics, School of Science, Wuhan University of Science and Technology, Wuhan 430033, Hubei, China
2.
Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology, Wuhan 430033, Hubei, China

Received Date: 2013-04-11
Rev Recd Date: 2013-05-26
Publish Date: 2014-09-25

Abstract

Abstract

The deflection angle formula was derived based on the neutral axis equation with the tall chimney blasting cut section under the action of both along-wind load and across-wind resonance.Then a series of wind load cases were considered as follows:different wind Beaufort scales (grade 4-grade 6), different blasting incision angles (190°-220°) and different wind load directions (0°-180°).Their influences were achieved on the directional blasting demolition.In addition, the maximum deflection angle of the tall chimney and its existence condition were discussed.The corresponding conclusion was verified by taking the 210 mhigh chimney in Nanchang power plant as an example.The results showed that the deflection angle considering the across-wind resonance was 4-6 times as big as that considering the along-wind load.Furthermore, there existed the most unfavorable wind direction angle which would cause the maximum deflection angle under certain conditions.The maximum deflection angle would increase with the increasing wind Beaufort scale and would decrease with the decreasing blasting incision angle.
- mechanics of explosion,
- across-wind resonance,
- deflection angle,
- directional blasting,
- wind load,
- tall chimney

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References

[1]	言志信, 叶振辉, 刘培林.烟囱定向爆破拆除倒塌过程[J], 爆炸与冲击. 2010, 30(6): 607-613. Yan Zhi-xin, Ye Zhen-hui, Liu Pei-lin. Collapsing process of chimney demolition by directional blasting[J]. Explosion and Shock Waves, 2010, 30(6): 607-613.
[2]	王斌, 唐海.高耸建筑物爆破定向倾倒运动风载计算分析[J].力学与实践, 2010, 32(5): 36-40. http://www.cnki.com.cn/Article/CJFDTotal-LXYS201005009.htm Wang Bin, Tang Hai. Calculation and analysis of motion wind load caused by directional collapse of the blasting high building[J]. Mechanics in Engineering, 2010, 32(5): 36-40. http://www.cnki.com.cn/Article/CJFDTotal-LXYS201005009.htm
[3]	武宏博, 程康, 孙亚飞.风荷载对高烟囱爆破拆除倾倒方向的影响[J].爆破, 2008, 25(3): 29-31. http://d.wanfangdata.com.cn/Periodical/bp200803007 Wu Hong-bo, Cheng Kang, Sun Ya-fei. Influence of wind loading to collapsing orientation in high smoke stack blasting demolition[J]. Blasting, 2008, 25(3): 29-31. http://d.wanfangdata.com.cn/Periodical/bp200803007
[4]	王红梅, 楼文娟.梯度风场中高耸结构涡致振动响应时程分析[J].工程力学, 2004, 21(5): 52-56. http://d.wanfangdata.com.cn/Periodical/gclx200405014 Wang Hong-mei, Lou Wen-juan. Analysis of vortex-induced vibration response of tall cylindrical structures in gradient wind field using the time-marching approach[J]. Engineering Mechanics, 2004, 21(5): 52-56. http://d.wanfangdata.com.cn/Periodical/gclx200405014
[5]	刘亚琦.圆截面高耸结构的横风向风振研究[D].武汉: 武汉大学, 2004.
[6]	韩芳, 钟冬望, 龚相超.横风向共振对高烟囱爆破倾倒方向的影响[J].爆破, 2012, 29(4): 10-13. http://d.wanfangdata.com.cn/Periodical/bp201204003 Han Fang, Zhong Dong-wang, Gong Xiang-chao. Effect of across-wind resonance acted on collapse direction of high chimney blasting[J]. Blasting, 2012, 29(4): 10-13. http://d.wanfangdata.com.cn/Periodical/bp201204003
[7]	费鸿禄, 段宝福.风载对筒形高耸建筑物定向爆破倾倒过程影响的研究[J].爆炸与冲击, 2000, 20(1): 92-96. http://www.cnki.com.cn/Article/CJFDTotal-BZCJ200001016.htm Fei Hong-lu, Duan Bao-fu. Study on the effect of wind power acted on the collapsing process of tubular tall building in directional blasting[J]. Explosion and Shock Waves, 2000, 20(1): 92-96. http://www.cnki.com.cn/Article/CJFDTotal-BZCJ200001016.htm
[8]	江见鲸.防灾减灾工程学[M].北京: 机械工业出版社, 2005: 243-246.
[9]	陈德志, 丁帮勤, 何国敏, 等.复杂环境下210m烟囱定向爆破拆除[J].爆破, 2012, 29(2): 72-76. http://www.cnki.com.cn/Article/CJFDTotal-BOPO201202020.htm Chen De-zhi, Ding Bang-qin, He Guo-min, et al. Directional demolition blast of 210mhigh chimney under complex conditions[J]. Blasting, 2012, 29(2): 72-76. http://www.cnki.com.cn/Article/CJFDTotal-BOPO201202020.htm
[10]	武汉科技大学工程力学测试中心.南昌发电厂210m钢筋混凝土烟囱爆破振动监测成果报告[R]. 2012.

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