| 烟囱附加弯矩的精确计算方法 |
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| 引用本文： | 张玉峰,江文明,李超,张闪林. 烟囱附加弯矩的精确计算方法[J]. 电力建设, 2011, 32(1): 72-75. DOI: 10.3969/j.issn.1000-7229.2011.01.018 |
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| 作者姓名： | 张玉峰 江文明 李超 张闪林 |
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| 作者单位： | 1. 武汉大学土木建筑工程学院,武汉市,430072
2. 中国广东核电集团,广东省深圳市,518028 |
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| 摘 要： | 烟囱高度超过210m时,采用等曲率法计算烟囱附加弯矩存在较大误差.提出了一种烟囱附加弯矩计算方法,该方法基于共轭梁理论,并对烟囱刚度进行折减.以某烟囱工程为实例,用该方法计算了烟囱在水平风荷载作用下的附加弯矩和水平变位.为了验证该方法的可靠性,应用有限元软件ANSYS的计算结果进行对比,算例结果证明了该方法的有效性.
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| 关 键 词： | 烟囱 附加弯矩 水平变位 计算机辅助设计(CAD) ANSYS软件 水平荷载 |
| 收稿时间： | 2010-06-11 |
| 修稿时间： | 2010-10-21 |
Method for Precise Calculation of Additional Bending Moments of Chimney |
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| ZHANG Yufeng,JIANG Wenming,LI Chao,ZHANG Shanlin. Method for Precise Calculation of Additional Bending Moments of Chimney[J]. Electric Power Construction, 2011, 32(1): 72-75. DOI: 10.3969/j.issn.1000-7229.2011.01.018 |
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| Authors: | ZHANG Yufeng JIANG Wenming LI Chao ZHANG Shanlin |
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| Affiliation: | 1.School of Civil Engineering,Wuhan University,Wuhan 430072,China;2.China Guangdong Nuclear Power Group,Shenzhen 518028,Guangdong Province,China) |
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| Abstract: | When a chimney reaches over 210 m in height, significant errors will occur if the even curvature method is used to calculate additional bending moments. A method is proposed for precise calculation of the additional bending moments of the chimney, which is based on the theory of conjugate beam, along with the chimney stiffness being reduced. By taking a chimney project as a case study, the method is used to calculate the additional bending moments and the lateral deflections under the lateral wind loads. In order to verify the calculation results by this method, the ANSYS software is used to make a comparison, which has proved the reliability of this method. |
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| Keywords: | chimney additional bending moment lateral deflection computer-aided design(CAD) ANSYS software lateral loads |
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