摘要
文章运用机械能流的观点,计算了砖砌烟囱倾倒过程中横向切应力的动态分布,进而论述实际烟囱的倾倒断裂情况将由其前沿纵向拉应力和横向切应力共同决定.恃别是对砖砌烟囱,由于其抗拉、抗剪性能都不太好,因而其倾倒断裂时的角度小,且最有可能在略小于0.5l 处断裂,这和实际情况是基本相符的.
This paper applies the point of mechanical energy flow,calculates the dynamic dispersion of transverse shear force of chimney in the process of the falling,and then proceeds to deduce that the situation of falling breaking of actual chimney is determined by total longitudinal stress in leading side and transverse shear force.Especially brick chimney,breaks at small angle, because the properties of tension and shear are not good enough,and most probably at the height a little less than 0.5l it is in keeping with the fact.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
1997年第1期139-142,共4页
Journal of Hefei University of Technology：Natural Science
关键词
机械能流
切应力
倒断
砖砌烟囱
mechanical energy flow
shear stress T_(γθ)
falling breaking of the chimney
