Wind Effects of Architectural Details on Gable-Roofed Low-Rise Buildings in Southeastern Coast of China

Abstract

Gable-roofed low-rise buildings with ridges, protruding gable walls and eaves gutters are usually found on the southeastern coast of China, which are often invaded by typhoons. The wind effects due to ridges, protruding gable walls and eaves gutters on low-rise buildings as well as the wind loads on the architectural details themselves have been studied through a series of wind tunnel tests. The mean block pressure coefficient and the negative peak block pressure coefficient on different roof regions were compared, and architectural details' single tap pressure coefficients and drag coefficients were investigated. The study shows that each of the architectural details reduces roof wind load impact to various extents, and their coexistence has a most significant effect on decreasing roof wind loads, up to the reduction of 56% on the ‘Ru’ windward region for the mean block pressure coefficient, and 47% and 45% on the ‘C1’ and ‘C2’ corner regions for the worst negative peak block pressure coefficient, respectively. The worst negative peak pressure at the interior surface of the architectural details occurs when the wind blows obliquely on the exterior surface of the architectural details. This condition leads to very large peak net pressure coefficients. The worst net pressure coefficients of the protruding gable wall, ridge and eaves gutter are about 18.0, 10.5 and 6.7, respectively. Finally, the drag coefficients on the architectural details were also examined, and the results are suitable for engineering application.

Fragility Comprehensive Assessment of Low‐Rise Cold‐Formed Steel Framed Wall Structure Subjected to Wind Load

“…However, at this time, for the main structure under wind directions of 0°and 90°, the occurrence probabilities of "slight damage" are 30% and 37.3%, respectively, the occurrence probabilities of "moderate damage" are 1.4% and 2.3%, respectively, and "severe damage" or "complete damage" does not occur. is is consistent with the conclusion of a previous wind hazard survey that "under strong wind, low-rise buildings are less likely to collapse while their cladding systems are highly susceptible to damage and loss of function" [26].…”

“…When a wind load acts on the structure, the airflow creates a vortex at the surface of the roof stud wall panels, resulting in a wind pressure on the roof and the windward and leeward walls [22,23]. e magnitude and distribution of the wind pressure are affected by a multitude of factors such as the building plan dimensions, roofing type, roof pitch, and wind direction, as well as the surrounding buildings and topography [24][25][26][27].…”

Wind pressure acting on greenhouses: A review

“…Although there is a good understanding on the phenomenon of wind pressure acting on eaves and ridges, modeling the complex flow phenomena such as airflow separation, reattachment and vortex shedding is still a problem [88] . To overcome this limitation, an alternative approach called large eddy simulation (LES) was used to predict the transient wind pressure value of various structures.…”