干煤棚风洞试验与风振分析  

Wind tunnel test and wind-induced vibration analysis of dry coal shed

作　　者：王枝茂 WANG Zhimao(Fujian Communications Planning&Design Institute Co.,Ltd.,Fuzhou 350001)

机构地区：[1]福建省交通规划设计院有限公司,福建福州350001

出　　处：《福建建筑》2025年第2期38-42,共5页Fujian Architecture & Construction

摘　　要：神华福建罗源湾港储电一体化项目干煤棚为大跨度钢结构柱面网架,属于风荷载敏感结构,且无法直接采用现有荷载规范提供的体型系数,须进行风洞试验确定风荷载。通过风洞模型试验确定干煤棚表面上的平均风压和脉动风压,并根据当地基本风压,推导出本结构的风荷载体型系数。通过风洞试验测得的各测点同步脉动压力时程,将其加载至结构有限元模型上进行动力时程分析,确定重要部位的风振位移和风振系数。通过研究发现:在分块体型系数上,试验结果与荷载规范规定值有较大差别。但在整体体型系数上,除背风部位试验值小于规范值,其余部位两者相近;围护结构设计时,取阵风风荷载和极值风荷载两者中不利的一组作为设计风荷载;该结构是一个复杂的空间结构,风振系数表现为多模态耦合的特性,对于整个结构不存在一个统一值。The integrated power and storage project of Shenhua Fujian Luoyuan Bay Port s dry coal shed is a large-span steel structure of column grid,which belongs to wind load Sensitive structures that cannot directly adopt the body shape coefficients provided by existing load,it require wind tunnel testing to confirm Fixed wind load.This article determines the average and fluctuating wind pressure on the surface of a dry coal shed through wind tunnel model experiments,and Derive the wind load shape coefficient of this structure based on the local basic wind pressure.Various measurements of Point synchronous pulsating pressure time history which has been obtained through wind tunnel tests,then load it onto the structural finite element model for dynamic time history analysis,and determine the weight The wind-induced displacement and wind-induced coefficient of the desired location.Through research,it has been found that the experimental results are consistent with the block shape coefficient,There is a significant difference in the specified values of the load code,but in terms of the overall shape coefficient,except for the leeward part,the test value is smaller than the code but The values are similar in other parts;When designing the enclosure structure,the choice between gust wind load and extreme wind load should be taken to be the design wind load;This structure is a complex spatial structure,and the wind vibration coefficient exhibits multi-mode behavior.The characteristic of state coupling does not have a unified value for the entire structure.

关 键 词：干煤棚 风洞试验 风振分析 体型系数 风振系数 阵风荷载 

分 类 号：TU3[建筑科学—结构工程]