A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Interference effects between two tall chimneys on wind loads and dynamic responses
https://orcid.org/0000-0002-4343-9748
https://orcid.org/0000-0002-9368-6309
Abstract The wind loads of two chimneys with different distances and incident angles were obtained by pressure measurement tests, and the results were presented as interfering factor (IF) contours. The interference effects on the across-wind loads were significantly greater than those on the along-wind loads. The dynamic responses of the chimney were calculated using the frequency domain method, and the extreme response interfering factors (RIFs) at different reduced wind velocities were obtained. For the extreme along-wind responses, the most unfavorable incident angle (MUIA) was 105°, and the maximal RIF was 1.3. For the extreme across-wind responses, the MUIA was 15° or 30°, and the maximal RIF was 1.9. Moreover, the combined envelope interfering factors (EIFs c), which were the combined maximal RIFs of all reduced wind velocities, were determined by combining the along- and across-wind responses. Because the equivalent static wind loads are determined based on the structure responses, EIFs c can be used as the IFs of the equivalent static wind loads as guide for wind-resistant designs of actual chimneys.
Highlights The interference factors of equivalent static wind loads are proposed to be obtained based on dynamic responses. The across- and along-wind interference effects of can be considered by combined envelope interfering factors. For the combined responses, 30° is the MUIA when L/D a = 2–3, while 15° is the MUIA when L/D a = 4–6.
Interference effects between two tall chimneys on wind loads and dynamic responses
https://orcid.org/0000-0002-4343-9748
https://orcid.org/0000-0002-9368-6309
Abstract The wind loads of two chimneys with different distances and incident angles were obtained by pressure measurement tests, and the results were presented as interfering factor (IF) contours. The interference effects on the across-wind loads were significantly greater than those on the along-wind loads. The dynamic responses of the chimney were calculated using the frequency domain method, and the extreme response interfering factors (RIFs) at different reduced wind velocities were obtained. For the extreme along-wind responses, the most unfavorable incident angle (MUIA) was 105°, and the maximal RIF was 1.3. For the extreme across-wind responses, the MUIA was 15° or 30°, and the maximal RIF was 1.9. Moreover, the combined envelope interfering factors (EIFs c), which were the combined maximal RIFs of all reduced wind velocities, were determined by combining the along- and across-wind responses. Because the equivalent static wind loads are determined based on the structure responses, EIFs c can be used as the IFs of the equivalent static wind loads as guide for wind-resistant designs of actual chimneys.
Highlights The interference factors of equivalent static wind loads are proposed to be obtained based on dynamic responses. The across- and along-wind interference effects of can be considered by combined envelope interfering factors. For the combined responses, 30° is the MUIA when L/D a = 2–3, while 15° is the MUIA when L/D a = 4–6.
Interference effects between two tall chimneys on wind loads and dynamic responses
https://orcid.org/0000-0002-4343-9748
https://orcid.org/0000-0002-9368-6309
Abstract The wind loads of two chimneys with different distances and incident angles were obtained by pressure measurement tests, and the results were presented as interfering factor (IF) contours. The interference effects on the across-wind loads were significantly greater than those on the along-wind loads. The dynamic responses of the chimney were calculated using the frequency domain method, and the extreme response interfering factors (RIFs) at different reduced wind velocities were obtained. For the extreme along-wind responses, the most unfavorable incident angle (MUIA) was 105°, and the maximal RIF was 1.3. For the extreme across-wind responses, the MUIA was 15° or 30°, and the maximal RIF was 1.9. Moreover, the combined envelope interfering factors (EIFs c), which were the combined maximal RIFs of all reduced wind velocities, were determined by combining the along- and across-wind responses. Because the equivalent static wind loads are determined based on the structure responses, EIFs c can be used as the IFs of the equivalent static wind loads as guide for wind-resistant designs of actual chimneys.
Highlights The interference factors of equivalent static wind loads are proposed to be obtained based on dynamic responses. The across- and along-wind interference effects of can be considered by combined envelope interfering factors. For the combined responses, 30° is the MUIA when L/D a = 2–3, while 15° is the MUIA when L/D a = 4–6.
Interference effects between two tall chimneys on wind loads and dynamic responses
Sun, Ying (author) / Li, Zhiyuan (author) / Sun, Xiaoying (author) / Su, Ning (author) / Peng, Shitao (author)
2020-05-02
Article (Journal)
Electronic Resource
English
| Engineering Index Backfile | 1923
Wind Loads on Chimneys and Towers
| British Library Conference Proceedings | 1997
Motion-induced wind forces on chimneys and tall buildings
| TIBKAT | 1989
| Engineering Index Backfile | 1911