Impact of urban construction on pedestrian level wind environment in complex building group

IF 3.2 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Indoor and Built Environment Pub Date : 2024-01-10 DOI:10.1177/1420326x231225617

Jianhan Yu, Jia Tang, Mingshui Li

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Abstract

The impact of urban construction on pedestrian level wind (PLW) has been extensively studied, which has mainly focused on ideal structures rather than real multiplex building layouts. Therefore, a series of wind tunnel tests were conducted on a real building complex to investigate the impacts of a newly built nearby high-rise building, added floors, passage width and a novelty zigzag building shape on the PLW. The findings showed that in converging layouts, PLW velocity can be increased up to 2.75 times by a nearby 230 m high-rise building, and it is reduced by 30% with a 30 m passage compared to a 10 m passage. Adding 38 m to a 65 m high building would increase PLW velocity by 1.95 times when compared to an isolated building and 2.4 times when compared to a building surrounded by others. Additionally, a modest impact on PLW velocity was observed with zigzag building shapes. This study highlights the PLW velocity that can be increased to a large extent with newly built high-rise buildings and adding floors, while increasing the passage width has the opposite effect. This study also offers insights into urban planning and building design to enhance wind comfort.

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城市建设对复杂建筑群步行层风环境的影响

城市建筑对行人水平风（PLW）的影响已被广泛研究，主要集中在理想结构上，而非实际的多层建筑布局。因此，我们在一个真实的建筑群中进行了一系列风洞试验，以研究附近新建的高层建筑、增加的楼层、通道宽度以及新颖的人字形建筑造型对行人水平风的影响。研究结果表明，在会聚式布局中，附近 230 米高的高层建筑可使 PLW 速度提高 2.75 倍，与 10 米通道相比，30 米通道可使 PLW 速度降低 30%。与孤立的建筑物相比，65 米高的建筑物增加 38 米会使 PLW 速度增加 1.95 倍，与其他建筑物相比增加 2.4 倍。此外，"之 "字形建筑对 PLW 速度的影响不大。这项研究强调了新建高层建筑和增加楼层可在很大程度上提高 PLW 速度，而增加通道宽度则会产生相反的效果。这项研究还为城市规划和建筑设计提供了启示，以提高风的舒适度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Indoor and Built Environment 环境科学-工程：环境

CiteScore

6.40

自引率

25.00%

发文量

130

审稿时长

2.6 months

期刊介绍： Indoor and Built Environment publishes reports on any topic pertaining to the quality of the indoor and built environment, and how these might effect the health, performance, efficiency and comfort of persons living or working there. Topics range from urban infrastructure, design of buildings, and materials used to laboratory studies including building airflow simulations and health effects. This journal is a member of the Committee on Publication Ethics (COPE).