|Table of Contents|

Comparisons of Nominal Values of Wind Loads on Hyperboloidal Cooling Towers(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2011年02期
Page:
52-61
Research Field:
Publishing date:
2011-06-20

Info

Title:
Comparisons of Nominal Values of Wind Loads on Hyperboloidal Cooling Towers
Author(s):
ZHANG Jun-feng;  GE Yao-jun;  ZHAO Lin
State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
Keywords:
hyperboloidal cooling tower;  code;  nominal value of wind load;  gust effect factor;  interference effect factor
PACS:
TU312.1
DOI:
-
Abstract:
Based on the comparative study of parameters, DL/T 5339—2006(China), BS 4485-4:1996(British), VGB-R 610Ue:2005(Germany)were selected as the representative codes and the calculation principles and methods of nominal value of wind load on hyperboloidal cooling tower were surveyed. The analysis considered the definition of basic wind velocity, wind profile, internal and external static wind pressure latitude distribution, gust effect factor, interference effect factor and also the interaction among them. Three representative hyperboloidal cooling towers were taken as examples to assess the gust effect factor from different codes, and a detail example was presented to illustrate the overall comparison of the nominal value of equivalent static wind load and the load effects. Results show that the nominal value profile of load of DL and VGB are close but much less than BS owning to differences from the design basic wind pressure profile and the gust effect factor. The meridian tension and latitude moment extreme values in middle-lower part of the shell originate from BS and VGB respectively; on the other hand, the meridian tension and latitude moment extreme values from BS are 1.4 times and 1.1 times of those from DL and VGB.

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Last Update: 2011-06-20