Wind tunnel test for impact of wind-sand flow on overall forces of low-rise building
Li Zhengnong1 Wang Shangyu1 Gong Bo2 Cong Shun1 Fan Tao 1
1．Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education， Hunan University
2. Key Laboratory of Solar Thermal Utilization and Photovoltaic System of the Chinese Academy of Sciences
Abstract：In this work, the wind tunnel tests were carried out to study the influence of wind-sand flow with different sand concentration and wind speed on the overall force of low-rise buildings. Test results show that compared with wind conditions without carrying sediment, wind-sand flow has a significant influence on the overall force of low-rise buildings. There is an apparent increase of the mean basal shear coefficient of low-rise buildings due to the occurrence of the wind-sand flow, while the higher sand concentration is, the more apparent the enlargement effect is. However, it is worth noting that the fluctuating basal shear coefficient is not only related to sand concentration, but it is also related to the indicative wind speed. It can be seen that when wind speed is small, the fluctuating effect of test model may be increased due to the occurrence of wind-sand flow, while when wind speed is high, the fluctuating effect may be decreased correspondingly.
Keywords: wind-sand flow; low-rise building; force measurement tests; shear coefficient
李正农 王尚雨 宫博 丛顺 范涛. 风沙对低矮建筑整体受力影响的风洞试验研究[J]. 土木工程学报, 2017, 50(1): 63-69.
Li Zhengnong Wang Shangyu Gong Bo Cong Shun Fan Tao. Wind tunnel test for impact of wind-sand flow on overall forces of low-rise building. 土木工程学报, 2017, 50(1): 63-69.
