Combination Method On Wind Effects Of Cylindrical Roofs

Wind loads usually act on all building surfaces in different directions, such as along-wind and across-wind surfaces. The phase of fluctuating wind effects is different and they can’t reach the extreme value simultaneously. So the research on the correlation of the wind and the combination method of extreme wind effects from different directions is of important theoretical significance and significant engineering value. To solve this issue, the main results in this paper are achieved as follows:(1) The probability plot correlation coefficient method is used to determine the best probabilistic density function of wind-induced response from long span roof buildings and high-rise buildings.(2) Based on the assumption that the probability distribution for wind effects is Gaussian, the paper derives the combination method of extreme wind effects with POT (peak-over-threshold) theory and the same percentage method. The combination method is simplified, and the simplified combination methods considering wind effects from two different wind direction and three different wind directions are achieved.(3) The comparison on the different wind load combination methods based on the wind effects of a high-rise building is discussed.(4) The correlation between the wind loads on the wall and roof of cylindrical roof structure is studied. The influence of wind pressure on walls to the response of roof structure and the influence of wind pressure on roof to wall structure is discussed.(5) Based on the combination method considering the ratio of response, the wind effect combination between the wall and roof is discussed.This work provides a reference for wind-resistant design based on the research on the combination of wind effects from wall and roof wind pressure.