论烟囱的地震力
SEISMIC LOADS ON CHIMNEYS
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摘要: 在文献[1]中我们根据砖烟囱的震害证明了水平地震力起决定性作用的传统观点是错误的,实际上是竖向地震力在起主要作用。同时还阐述了砖烟囱出现多条裂缝的破坏机理。本文在文献[1]的基础上对烟囱出现斜缝、错位及破坏截面接近顶端等现象,计算其最大水平地震力及最小竖向地震力以证明上述观点.对出现的多条裂缝,也用计算数字来说明其破坏机理.Abstract: Horizontal earthquake load has been generally assumed as the decisive role in damaging structures. According to our field investigation of damage to chimneys, it is shown that this traditional idea is not correct and the vertical seismic load does play the major role in the damage. Besides, the damage mechanism of multiple peripheral cracks on brick chimneys is described. Based on literature [1], both the maximum value of the horizontal seismic load and the minimum value of the vertical seismic load are computed for all damage patterns of chimneys: inclined cracks, dislocation, and fractured section near the top of the chimney in order to show that the vertical seismic load plays a major role in damage to chimneys, as mentioned above. For multiple peripheral cracks of brick chimney, the damage mechanism is also explained by computation.Continuous attenuation of longitudinal wave in transmission is considered, and so its computation formulas are not exactly the same as those in reference [1].
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[1] 钱培风等,烟囱在地震作用下的纵波应力,力学学报,2,1978.
[2] 钱培风,论竖向地震力,建筑结构,3, 1978.
[3] 钱培风,烟囱水平地震力的简化计算法,地震学报,3, 2, 1981.
[4] 钱培风,砖支承水塔的震害与竖向地震力,建筑结构,3, 1980.
[5] 钱达,对简支梁桥抗震的一些看法,力学与实践,2, 1979.
[6] 钱培风等,唐山地震新风井塔的竖向地震力,地震工程动态,1, 1980.
[7] 钱培风,砖房的竖向地震力及其抗震措施,地震研究,2, 1981.
[8] 工业与民用建筑抗震规范(试行),建筑工业出版社,1979.
[9] 钱培风,加构造柱砖房的抗震性能,地震工程动态,1, 1981.
[10] Qian Peifeng et al, Vertical Earthquake Load on Chimneys,7, 7,WCEE, 1980.
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