Influence of wind pressure distribution on the wind-induced responses and local stability of cooling tower
XU Yuan-han1, SHEN Guo-hui1, ZHANG Jian1, LIU Xian-qun2, WU Jian-guo2
1 Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China
2 Electric Power Design Institute of Zhejiang Province, Hangzhou 310007, China
The difference of wind-induced responses of cooling tower under wind loads obtained from codes and wind tunnel test is studied. A comparison was made between the wind pressure distribution coefficients derived from Chinese, British and Germany codes. The wind loads on a large cooling tower obtained from the test and the codes were compared. A finite element model of the tower considering tower shell, herringbone column, circular foundation and pile was established. And the influence of wind pressure distribution on the wind-induced responses and local stability coefficients of the tower were made. The result showed that the wind pressure distribution coefficients on the top and bottom of the tower are quite different with those on the middle part due to three-dimensional flow effect. The biggest values of wind-induced responses under the test and codes appeared different with the type of the response, for example, the axial force of herringbone columns and piles reaches their biggest value is under the wind loads from the test. The local stability coefficients of the tower under the wind loads from Chinese, British and Germany codes are quite the same and totally smaller than those obtained from the test, with the minimum value 37.8% smaller than those obtained from the test.
收稿日期: 2015-04-28
出版日期: 2016-09-25
引用本文:
徐渊函1,沈国辉1,张坚1,刘显群2,吴建国2. 表面风压分布对冷却塔风致响应和局部稳定性的影响[J]. 振动与冲击, 2016, 35(19): 63-69.
XU Yuan-han1, SHEN Guo-hui1, ZHANG Jian1, LIU Xian-qun2, WU Jian-guo2. Influence of wind pressure distribution on the wind-induced responses and local stability of cooling tower. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(19): 63-69.
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