Analysis of Wind Field Characteristics of Ideal V-Shaped and U-Shaped Canyons

Zelin Zhou, Xu Xin, Jiaxin Yu () and Maoyi Liu ()
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Zelin Zhou: China 19th Metallurgical Corporation, Chengdu 610031, China
Xu Xin: Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China
Jiaxin Yu: Yunnan Institute of Transportation Planning and Design, Kunming 650032, China
Maoyi Liu: Chongqing Construction Investment (Group) Co., Ltd., Chongqing 400010, China

Sustainability, 2023, vol. 15, issue 13, 1-17

Abstract: As an important part of road transportation, bridge engineering plays a pivotal role in infrastructure construction. The wind field characteristics of the bridge site area have an essential influence on both the construction and operation period of the bridge, especially in mountainous canyon terrain. In this paper, a numerical simulation using computational fluid dynamics software was conducted to examine the intricate wind field characteristics in mountainous regions. The study focused on ideal V-shaped and U-shaped canyons, aiming to investigate the influence of various parameters. These parameters included three distinct heights, seven angles, and seven widths of the canyon. The findings indicate that in both ideal V-shaped and U-shaped canyons, the canyon acceleration effect weakens as the angles or widths of the canyon increase. The wind speed amplification effect gradually disappears when the V-shaped canyon angle exceeds 160° or when the U-shaped canyon has a width-to-height ratio of approximately 5:1. The wind speed amplification effect strengthens as the canyon height increases. The wind speed acceleration effect exhibits a linear relationship with the angle of the V-shaped canyon, while it demonstrates a logarithmic relationship with the width of the U-shaped canyon. Additionally, the wind speed amplification factor follows a logarithmic distribution along the canyon height. The wind field characteristics observed in this study offer valuable insights for future bridge designs in mountainous regions featuring V-shaped and U-shaped canyons.

Keywords: ideal canyons; bridge site; canyon effect; wind field characteristics; CFD numerical simulation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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