Abstract
We are investigating how to use urban design approaches to conduct the layout and basic design of newly-built high-rise buildings to reduce wind obstruction and create effective urban ventilation. Few studies have addressed this issue. This study analyzes the effects of high-rise building on pedestrian-level wind in downstream street canyons based on wind tunnel test results, and examines the suitability of an urban design specification. The height (H) of high-rise buildings and the airflow passage width (S) between adjacent high-rise buildings are key control factors for this issue; H/D = 3 and S/D = 1.125 are critical parameters and recommended values (D is the height of the downstream street blocks).
Highlights
In high-rise building design, in addition to safety and aesthetics, how the building affects the surrounding microclimate is an important consideration
Relevant studies were generally categorized into three aspects, one that examines the effects of a single high-rise building on its surrounding pedestrian-level wind field [1,2,3,4,5], another that investigates the effects of high-rise buildings [6,7,8,9,10,11,12,13,14] and another that focuses on urban street canyons [12,13,14,15,16,17]
The objective of the present study is to provide insights into the suitability of an urban design specification for having adequate urban ventilation performance via analyzing the effects of high-rise building on pedestrian-level wind in downstream street canyons based on wind tunnel test results, for which little information is available
Summary
In high-rise building design, in addition to safety and aesthetics, how the building affects the surrounding microclimate is an important consideration. Relevant studies were generally categorized into three aspects, one that examines the effects of a single high-rise building on its surrounding pedestrian-level wind field [1,2,3,4,5], another that investigates the effects of high-rise buildings [6,7,8,9,10,11,12,13,14] and another that focuses on urban street canyons [12,13,14,15,16,17]. Kuo et al [2] used wind tunnel testing to investigate the characteristics of the pedestrian-level wind environment in street canyons around single high-rise buildings for different approaching wind directions and geometrical conditions, including different street widths and podium heights.
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