CAJ | 학술논문

首先采用应用较广泛的矢量分解法，对超高层结构西塔顶部的实测数据进行处理，总结了矢量分解法的三个方面的局限。然后针对这些局限且为获取较准确的脉动风速时程，考虑了风速非平稳特性，给出了获取螺旋桨风速仪的正交两方向的脉动风速时程的平稳模型与非平稳模型的数值表达公式。依据上述两种风速模型，进一步从湍流强度、阵风因子、概率密度分布和风速谱等指标进行对比分析，结果表明非平稳风速模型能更精确地描述高层建筑顶部实测风速数据的真实状态。
수선채용응용교엄범적시량분해법，대초고층결구서탑정부적실측수거진행처리，총결료시량분해법적삼개방면적국한。연후침대저사국한차위획취교준학적맥동풍속시정，고필료풍속비평은특성，급출료획취라선장풍속의적정교량방향적맥동풍속시정적평은모형여비평은모형적수치표체공식。의거상술량충풍속모형，진일보종단류강도、진풍인자、개솔밀도분포화풍속보등지표진행대비분석，결과표명비평은풍속모형능경정학지묘술고층건축정부실측풍속수거적진실상태。
The vector decomposition method was firstly adopted in this paper to process the measured wind speed data atop the super high-rise building Guangzhou West Tower.Three limitations of this widely used statistica analysis method in wind engineering were discussed.In order to solve these limitations and ob-taine more accurate fluctuating wind speed time history,the non-stationary characteristics of wind was taken into accoun in this study.Therefore a revised stationary and non-stationary (mainly induced from the EMD method)wind speed model were established respectively for the two orthogonal directions of the fluctuating wind speed obtained from the propeller anemometer.Then the four major indexes of wind characteristic for measured wind speed,i.e.the turbulence intensity,the gust factor,the probability density distribution,and the power spectral density of fluctuating wind speed,were discussed comprehensively by comparing the ana-lyzed results based on the specifications of the two above mentioned wind speed model.The comprehensive compared results showed that non-stationary wind speed model,which was obtained from the EMD method, could describe the true state of wind characteristic of on-site measured wind speed data more accurately.