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| 典型体育场屋盖风荷载特性的风洞试验研究 | |
| 引用本文： | 操礼林,褚兰晢,石启印,李爱群,陈家光,李少龙,赵波.典型体育场屋盖风荷载特性的风洞试验研究[J].防灾减灾工程学报,2012,32(3):339-345. |
| 作者姓名： | 操礼林 褚兰晢 石启印 李爱群 陈家光 李少龙 赵波 |
| 作者单位： | 1. 江苏大学土木工程系,江苏镇江212013;东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096 2. 镇江市建设工程质量监督站,江苏镇江,212000 3. 江苏大学土木工程系,江苏镇江,212013 4. 东南大学混凝土及预应力混凝土结构教育部重点实验室,南京,210096 5. 镇江市建设工程代建中心,江苏镇江,212000 |
| 基金项目： | 国家“十一五”科技支撑项目 |
| 摘 要： | 对某一具有代表性的大型体育场刚性模型进行了表面测压风洞试验,介绍了试验所采用的主要技术参数和基本的数据处理方法,分析了结构典型测点在不同风向角下的风压变化规律,给出了该体育场屋盖上的对应于50年和100年重现期的10min平均风压值及前10个最小极值风压值。分析表明:风压系数平均值分布规律明显,能体现屋盖上流场分布的情况;均方根值能在一定程度上反映出气流分离和旋涡脱落情况。典型体育场屋盖上表面主要分布负压,其中迎风边缘及突出部位较大,低凹处及尾流区域较小;屋盖下表面在迎风的钝体边缘有较大区域正压出现,背风处分布有不大的均匀负压。 |
| 关 键 词： | 大跨屋盖 悬挑屋面 风洞试验 风压分布 |
Wind Pressure Distribution Characteristics on a Typical Stadium Roof |
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| CAO Li-lin , CHU Lan-zhe , SHI Qi-yin , LI Ai-qun , CHEN Jia-guang , LI Shao-long , ZHAO Bo.Wind Pressure Distribution Characteristics on a Typical Stadium Roof[J].Journal of Disaster Prevent and Mitigation Eng,2012,32(3):339-345. | |
| Authors: | CAO Li-lin CHU Lan-zhe SHI Qi-yin LI Ai-qun CHEN Jia-guang LI Shao-long ZHAO Bo |
| Affiliation: | 1.Department of Civil Engineering,Jiangsu University,Zhenjiang 212013,China;2.Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China;3.Construction Quality Supervision Station,Zhenjiang 212000,China;4.Substitute Construction Center of Civil Engineering,Zhenjiang 212000,China) |
| Abstract: | A wind tunnel test of a stadium model was carried out to investigate the wind pressure distribution on the stadium covering.Firstly,the technical parameters used in the test and the basic data processing methods were introduced in detail. Then,the variations of wind pressure at typical measuring points under different wind angles were discussed.Finally,wind pressures of 50 and 100 year return period with 10 min.time average,as well as the top ten extreme pressures based on statistical technique were given.The analysis showed that the distribution of average wind pressure coefficient is disciplinary and it can reveal the distribution of the roof’s fluid field.The RMS wind pressure coefficient can reveal the situation of airflow’s separation and vortex shedding a certain extent.The up-surface of large-scale stadium roof is mainly loaded by suction,the suction of windward edges and convex parts is comparatively bigger,contrarily that of the other areas is smaller.On the down-surface windward butt edge,there is mainly positive wind pressure distributed and on the down-surface lee area,there is small uniform negative wind pressure distributed. |
| Keywords: | long-span roof cantilevered roof wind tunnel test wind pressure distribution |
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