| Double-L-shaped high-rise buildings are a new and common form of high-rise building, with good ventilation and lighting effects. The specific body shape of such buildings results in complex wind loads, and existing research is not sufficient enough to guide the structure design. Therefore, a series of numerical simulations and wind tunnel tests were conducted to systematically study the shape coefficient and wind force coefficient of double L-shaped high-rise buildings, and the influence of wind direction, L-angle, aspect ratio, and thickness ratio on wind loads were analyzed. The numerical simulation results were compared with the wind tunnel test results. The change trend of the two is basically the same, and the numerical difference is within 10%, which shows the credibility of the numerical simulation. It was found that wind loads are significantly different under various parameter conditions. The shape coefficients of outer surfaces reach maximum at orthogonal wind direction, and the shape coefficients of all inner surfaces are negative, the maximum absolute value of the shape coefficient is significantly higher than that of conventional high-rise buildings. The thickness ratio and L-angle of the double L-shaped section have a slight influence on the wind force coefficient, while the aspect ratio has a significant influence. The cross-wind and torsional wind force coefficients of double L-shaped high-rise buildings are much greater than those of conventional high-rise buildings at specific aspect ratios. Finally, a detailed summary was given on the shape coefficient and wind force coefficient under different parameter conditions, which can provide reference for the wind resistance design of double L-shaped high-rise buildings. |
