Monitoring of wind effects on a low-rise building during typhoon landfalls and comparison to wind tunnel test results

Abstract

A full-scale instrumented experimental low-rise building was built and implemented to monitor wind effects on the building during typhoons. Field measurements of the near-surface wind velocity field and wind-induced pressures on the low-rise building were carried out during the passages of 10 typhoons in 2008-2011. This paper presents a combined study of field measurements and wind tunnel testing. Detailed analysis of the measured data has been conducted to investigate the typhoon-generated wind characteristics and wind-induced pressures on the roof of the experimental building under extreme wind conditions during typhoon landfalls. On the other hand, wind tunnel experiments have been performed to study the wind loads on the low-rise building. The model test results were compared with the full-scale measurements to evaluate the accuracy of the model test results and the adequacy of the techniques used in the wind tunnel tests. It was found that the wind tunnel tests underestimated the real fluctuating and negative peak pressure coefficients on a roof corner zone for quartering winds.

Assessing aerodynamic loads on low-rise buildings considering Reynolds number and turbulence effects: a review

“…However, the results of high peak pressures from the wind tunnel should not be considered for codification due to the discrepancies discussed earlier. Similar inferences concerning peak pressures for model-scale and full-scale models are reported in [30,[57][58][59][60][61][62]. Although full-scale tests are more accurate, sometimes these tests are also accompanied by some difficulties, which may result in inaccurate measurement [63].…”

Influence of Ultrasonic Wind Sensor Position on Measurement Accuracy under Full-Scale Conditions

“…Recently, extensive results were made available regarding monitoring of the wind-induced dynamic responses of high-rise buildings under typhoon conditions in China (e.g., [ 10 , 11 , 12 , 13 ]). Measurements focused on pressure changes on the roofs of low-rise buildings during typhoons were presented in [ 14 , 15 ]. Recently, wind pressures were measured at full scale on rooftop photovoltaic arrays [ 16 ], different shaped roofs [ 17 ], low-slope membrane roofs [ 18 ], and on walls of medium-rise buildings [ 19 ].…”

Monitoring of wind pressures on gable roof of a low‐rise building during tropical cyclones and comparisons with wind tunnel test results

“…For example, Li et al investigated the wind characteristics and wind‐induced pressures on the flat‐roofed experimental building during Typhoon Chanthu. Then, Li and Hu performed a comparative study between the field measurements of the wind pressures on the flat‐roofed building during 10 tropical cyclones and the wind tunnel experimental results from the building model. Recently, Wang et al investigated the full‐scale measurements of wind pressure coefficients on the roof and overhang of one of the experimental low‐rise buildings.…”