大跨双坡屋盖结构等效静风荷载研究与参数分析

等效静风荷载是描述大跨空间结构动力风荷载的有效方式。运用Ansys软件进行结构风致响应时程分析，进而研究大跨双坡屋盖结构等效静风荷载。针对风向角、屋面坡度、结构高度和跨度等参数，系统性开展双坡屋盖结构的等效静风荷载的参数分析，为工程设计提供参考依据。研究表明，在0°风向角下屋盖结构等效静风荷载值最大；随着风向角增大，结构的等效静风荷载减小；随着结构高度和跨度的增加，结构等效静风荷载增大，且其分布发生变化；屋面坡度对于结构等效静风荷载的影响较为复杂，适当增大屋面坡度对结构抗风有利。

Research and Parameter Analysis of Equivalent Static Wind Loads on Large-Span Gable-Roofed Structures

Equivalent static wind loads (ESWL) is an effective way to describe the dynamic wind loads on large-span space structures. By using Ansys to analyze the wind-induced dynamic response of the structures, the equivalent static wind loads on large-span gable-roofed structures is well performed. Considering parameters such as wind direction, roof slope, structural height and span, parameter analysis of equivalent static wind loads on large-span gable-roofed structures were researched systematically, which can be reference basis for structural wind-resistant design. According to the present results, equivalent static wind loads on large-span gable-roofed structures is the maximum at zero degree wind direction. When the wind direction angle increases, equivalent static wind loads on the structure decreases. As structural height and span increase, equivalent static wind loads on the structure enlarge and its distribution changes. The effect of roof slope on equivalent static wind loads on the structure is complex. Extending the roof slope properly is benefited for structure to resist the wind loads.