湖南大学学报（自然科学版）2016，Vol.43Issue(11)：78-85,8.
大跨度球面网壳结构风力荷载间歇特性研究∗
Experimental Study on Intermittent Characteristics of Force Coefficient of Long-span Spherical Shells
摘要
Abstract
The pressure measurement of rigid model for long-span spherical shells structure was con-ducted at TJ-3 wind tunnel laboratory.Firstly,the non-stationary characteristics of wind pressure signals were verified by the run theory.Secondly,the wind signals of 1∶200 model structures were decomposed in the different scales by discrete wavelet transform,and the time-history curves of wavelet coefficients were obtained.For the quantitative analysis of intermittent characteristics of wind,the distribution of scale energy,intermittent factors,and intermittent energy were analyzed and compared.The studies show that wind field category had great influence on the stationary characteristics of drag coefficient and Z-direc-tion lift coefficient as well as the intermittent energy ratio and intermittency factor in high scale region,but had small influence on the scale energy ratio of wind coefficients in the different scales.In the different scales,the overall drag coefficient presents positive correlation withY-direction lift coefficient and negative correlation with Z-direction lift coefficient.In addition,the correlations between overall drag coefficientand Y-direction lift coefficient increased with the increase of scales.关键词
球面网壳/小波变换/风力系数/尺度能量比率/间歇因子/间歇能量比率Key words
spherical shells/wavelet transform/force coefficient/scale energy ratio/intermittent fac-tor/intermittent energy ration分类
建筑与水利引用本文复制引用
王旭,张俊波,黄鹏..大跨度球面网壳结构风力荷载间歇特性研究∗[J].湖南大学学报（自然科学版）,2016,43(11):78-85,8.基金项目
国家自然科学基金资助项目(51378396),National Natural Science Foundation of China(51378396) （51378396）
中国博士后科学基金资助项目(2014M560706) （2014M560706）
