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刚性防爆墙迎爆面荷载计算方法研究 被引量:10

BLAST RESPONSE OF INCLINED RIGID WALLS
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摘要 防爆墙作为一种有效的防护措施在国内外重要工程中得到了广泛应用,研究防爆墙迎爆面荷载计算方法有助于防爆墙的科学设计和合理使用。该文采用数值模拟的方法,对不同倾斜角度刚性墙迎爆面压力荷载的计算方法及不同倾角墙体的抗爆效能进行了研究。分析了冲击波在垂直墙体、迎向以及背向炸药倾斜墙体上的反射、绕流以及荷载分布规律,总结出了不同工况时墙体荷载计算方法。研究发现背向炸药倾斜的墙体与垂直墙体以及迎向炸药倾斜的墙体具有几乎相同的防护效果,但墙体所承受的荷载要低于其他两者,合理的解释了工程中存在的防爆墙后倾现象的力学机制。 To effectively prevent the blast damage of buildings and structural elements through blast walls, an accurate prediction of the blast loads in terms of the peak pressures on blast walls is necessary. Numerical simulations were adopted to study the blast loads on blast walls with inclinations varying from 5°to 30°and their corresponding blast attenuation effects. Reflections and refractions of the blast wave from blast walls with inclinations were analyzed. The distribution and prediction equations of the blast loads on the blast walls were explored from the numerical analysis. It is concluded that the blast wave attenuation effects are similar for blast walls with different inclinations. When the blast wall is anticlockwise inclined, the maximum moment on the wall is much smaller, which reveals the mechanism of the anticlockwise inclined blast wails widely adopted in engineering.
出处 《工程力学》 EI CSCD 北大核心 2012年第11期228-235,共8页 Engineering Mechanics
基金 国家自然科学基金创新研究群体科学基金项目(51021001) 国家自然科学基金项目(51078351) 重庆交通大学(桥梁)结构工程重点实验室开放基金项目(CQSLBF-Z11-1) 爆炸科学与技术国家重点实验室开放基金项目(KFJJ10-16) 岩土力学与堤坝工程教育部实验室(河海大学)开放基金项目(GH200905)
关键词 防爆墙 防爆机理 爆炸荷载 数值分析 反射波 blast walls anti-blast mechanism blast loads numerical analysis wave reflection
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  • 1Ngo T, Mendis P, Gupta A, et al. Blast loading and blast effects on structures-An overview [J]. EJSE Special Issue: Loading on Structures, 2007: 76-91.
  • 2Wu C, Lu Y, Hao H. Numerical simulation of blast wave interaction with structure columns [J]. International Journal of Impact Engineering, 2005, 31 : 699-717.
  • 3Baker W E, Cox P-A, Westine P S, et al. Explosion hazards and evaluation [M]. New York: ElsevierScientific Publishing Company, 1983: 51 - 53.
  • 4Biggs J M. Introduction to structural dynamics [M]. New York: McGraw-Hill, 1964: 192-195.
  • 5Brode ki L. Numerical solutmn ot spiaencal blast waves [J]. Journal of Applied Physics, 1955, 26(6): 766-775.
  • 6Shi Y C, Hao H, Li Z X. Modeling of simultaneous ground shock and airblast pressure on nearby structures from surface explosions [J]. Shock Waves, 2007, 17: 113-133.
  • 7U.S. Naval Facilities Engineering Command. Structures to resist the effects of accidental explosions, NAVFAC P-397 design manual JR]. Alexandria: Department of the Air Force, 1991:110- 11 l(also Army TM5-1300).
  • 8U.S. Department of the Army. Fundamentals of protective design for conventional weapons [R]. Washington, DC: Department of the Army, 1986: 14- 17(also TM5-855).
  • 9He'nrych J. The dynamics of explosion and its use [M]. Amsterdam: Elsevier, 1979: 265-266.
  • 10John O H. AUTODYN theory manual [R]. California: Livemore Soft-ware Corporation, 1997: 1430-1435.

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