双曲冷却塔等效静力风荷载中国规范适应性研究

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (11) : 100-105.

论文

双曲冷却塔等效静力风荷载中国规范适应性研究

邹云峰，李寿英，牛华伟，陈政清

作者信息 +

Adaptability study of China’s code for equivalent static wind load of hyperbolic cooling towers

Zou Yun-feng Li Shou-ying Niu Hua-wei Chen Zhen-qing

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文章历史 +

摘要

中国规范关于大型双曲冷却塔等效静力风荷载的条文仅适用于高度小于165m的冷却塔，在缺少系统研究的情况下，可借鉴国外规范的相关条文。首先，本文以单塔为例对德国规范等效静力风荷载计算公式进行适当变换，得到了与中国规范完全一致的表达形式，且公式中只有风振系数和平均风压分布系数取值有差异，对两国规范中上述二参数的取值进行了比较；然后，采用有限元计算方法，对3座不同高度的冷却塔在中、德规范等效静风荷载作用下的内力及变形分布进行计算分析，结果表明，即使对200m高的冷却塔，中国规范关于等效静力风荷载的条文规定也是适应的。

Abstract

The equivalent static wind load of large hyperbolic cooling towers with a height over 165m is not provided in the code of China. In the absence of systematic research, we can learn the relevant provisions from foreign standards. Firstly, taking single tower for an example, some appropriate transformations are made to the formula of equivalent static wind load from German’s code , which result in an expression entirely consistent with China’s code, except the discrepancy on the gust loading factor and mean wind pressure distribution coefficient, and then comparison is made between the value of two parameters provided in China’s code and German’s code. Secondly, using finite element method, the wind induced responses of the three cooling towers with different heights are calculated under the action of different equivalent static wind load which are obtained according to Chinese code and Germany code respectively. Based on the analysis of the results, provisions in China’s cod about equivalent static wind load are adaptive even for the 200m high cooling towers.

导出引用

邹云峰;李寿英;牛华伟;陈政清. 双曲冷却塔等效静力风荷载中国规范适应性研究[J]. 振动与冲击, 2013, 32(11): 100-105

Zou Yun-feng Li Shou-ying Niu Hua-wei Chen Zhen-qing. Adaptability study of China’s code for equivalent static wind load of hyperbolic cooling towers[J]. Journal of Vibration and Shock, 2013, 32(11): 100-105