| 周边建筑对大跨屋盖风荷载的干扰效应研究 |
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| 引用本文： | 李波,杨庆山,冯少华,范重.周边建筑对大跨屋盖风荷载的干扰效应研究[J].气动实验与测量控制,2012(5):27-30,41. |
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| 作者姓名： | 李波 杨庆山 冯少华 范重 |
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| 作者单位： | [1]北京交通大学土木建筑工程学院,北京100044 [2]中国建筑设计研究院,北京100044 |
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| 基金项目： | 基金项目：国家自然科学基金重大研究计划重点项目（90815021）和中央高校基本科研业务费（201JJBM262）资助 |
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| 摘 要： | 以天津国际金融会议酒店为例，采用多通道同步测压风洞试验技术，研究了周围高层建筑对大跨屋盖风荷载的干扰效应。试验结果表明：位于大跨屋盖两侧的高层建筑将引起明显的“穿堂风”效应，作用于大跨屋盖的风荷载将显著增加，但大跨屋盖上游高层建筑的“遮挡”作用，有利于减小两侧高层建筑引起的“穿堂风”效应，而下游高层建筑会加剧屋盖局部区域的“穿堂风”效应。周围高层建筑物的出现，增加了来流中的湍流成分，使得作用于大跨屋盖的脉动风荷载增大。
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| 关 键 词： | 大跨屋盖 干扰效应 风荷载 风洞试验 压力系数 |
Research on the interference effect of surrounding buildings on the wind load of long-span roof |
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| Authors: | LI Bo YANG Qing-shan FENG Shao-hua FAN Zhong |
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| Institution: | 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. China Architecture Design and Research Group, Beijing 100044, China) |
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| Abstract: | Simultaneous multi-channel pressure measuring tests have been carried out in a wind tunnel to investigate the interference effects of surrounding buildings on the wind load of long-span roof, taking Tianjin international financial hotel for example. The test results show that： due to the narrow road effect caused by high-rise buildings on both sides of the long-span roof, the mean wind pressure on the roof increases significantly, but the windbreak effect of high rise buildings located on the upstream of the long-span roof decreases the narrow road effect and buildings located on the downstream increases the effect, resulting in increase of wind load on lo- cal areas of the roof. Due to the surrounding high-rise buildings, the turbulence in the coming flow is increased and the turbulence wind loads acting on the long-span roof is also inereased. |
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| Keywords: | long-span roof interference effect wind load wind tunnel test pressure coefficient |
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