| 论烟囱的地震力 |
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| 引用本文： | 钱培风,杨亚弟,苏文藻,李玉宝.论烟囱的地震力[J].地震学报,1982,4(3):316-326. |
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| 作者姓名： | 钱培风 杨亚弟 苏文藻 李玉宝 |
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| 作者单位： | 中国科学院工程力学研究所 |
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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.
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SEISMIC LOADS ON CHIMNEYS |
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| Affiliation: | Institute of Engineering Mechanics, Chinese Academy of Sciences |
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| 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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