2) fluctuating wind pressure
脉动风压
1.
Based on the cantilever arc roof wind tunnel test,the transform of continuous wavelet,the selection of the mother wavelet and the multi-resolusion analysis are made of the collected fluctuating wind pressure.
基于弧形挑篷模型测压风洞试验,对采集到的风压样本进行了连续小波变换、母小波的选取及多分辨率分析,并对各尺度上脉动风压小波系数和尺度系数的相关性进行了分析,识别了弧形挑篷风压在不同频率范围内的能量分布情况,并以不同频率范围内的风压信号相关性差异,确定脉动风压传播的频率范围。
2.
A 3D wind load test of heliostat in wind tunnel was carried out using surface pressure measuring technology and the distribution of mean wind pressure and fluctuating wind pressure at measured points of mirror s surface was obtained while wind direction angle varied from 0° to 180° and elevation angle varied from 0° to 90°.
采用表面测压技术对定日镜模型进行了三维风荷载风洞试验,得到了各测点风向角0°~180°范围内,竖向角为0°~90°情况下,镜面平均风压和脉动风压的分布,重点探讨了镜面脉动风压特性。
3.
Generally,interference effect of surrounding buildings can decrease the mean wind pressure and increase the fluctuating wind pressure,and the e.
得出的主要结论:上游建筑物的干扰一般会减小屋盖上的平均风压,增大屋盖上的脉动风压,且对迎风前缘的影响比对其他部位的影响大;周边建筑物的布置,也有可能产生"兜风效应"从而显著地增大风压;周边建筑的影响使风压分布更加分散,脉动风荷载对于总的设计风荷载来说不能忽略。
3) fluctuating pressure
脉动风压
1.
Wind tunnel test research for fluctuating pressure on large-span complex foof;
复杂大跨屋面脉动风压风洞试验研究
2.
Interference effects on local fluctuating pressure on two square tall buildings in tandem arrangement:part 1 windward side effects
两串列方柱局部脉动风压干扰研究:第1部分 迎风面效应
3.
The fluctuating pressures both in the along wind direction and in the across wind direction are simulated according to Davenport spectrum density function and the fluctuating pressure spectrum density function specified in Japanese building code.
根据Davenport脉动风速谱函数与日本规范中提出的横风向脉动风力谱系数函数模拟的顺风向与横风向脉动风压时程,采用Newmark法计算了一栋高68m的高层建筑物的风振扭转动力反应时程。
4) pulsating wind pressure
脉动风压
1.
Local dynamic effects of structure under pulsating wind pressure;
随机脉动风压下局部动力效应
2.
For the requirements of wind resistance design for the structure,a rigid model with scale was made,and the wind tunnel test about pulsating wind pressure and mean wind pressure on the structure surface was carried out.
杭州黄龙体育中心网球馆屋盖属于可开启结构,部分屋盖可沿平行轨道滑动,结合该主体结构的抗风设计要求制作1∶100的刚性模型,进行了结构表面平均风压和脉动风压分布的风洞试验。
3.
For the requirements of wind resistance design for the main part, a rigid model with 1:200 scale was made, and the wind tunnel test about pulsating wind pressure and mean wind pressure on the structure surface was carried out.
本文结合该主体结构的抗风设计要求,制作了1∶200刚性模型进行结构表面脉动风压平均风压分布的风洞试验研究,详细介绍了风洞试验及数据处理方法,讨论了在不同风向角下椭球面屋盖和圆锥面玻璃幕墙的风压分布。
5) impulsive wind pressure
脉动风压力
6) velocity and pressure of fluctuating wind
脉动风速及风压
1.
According to the parameters given by Chinese Code and the shape coefficients obtained from wind tunnel experiments, the relationship between velocity and pressure of fluctuating wind is dervied, and the time history of a fluctuating wind load is given.
然后根据国家规范提供的参数及风洞试验得到的形状系数，推导出脉动风速及风压之间的关系，求出脉动风荷载的时程。
补充资料：风压
风压
wind pressure
蒲福风力等级表牛 注:13~17级风力是当风速可以仪器测定时用之。fengya风压(windp找，sure)风吹过障碍物时，在垂直于风速方向上单位面积上所受到的压力。对于障碍物来说，风压是两部分作用之和:一是迎风面的“动压强”(告，2)，二是背风侧的“吸压强”(告、”。将这两部分综合起来，可求得风压的公式: ，二合‘l+c，，’式中p为风压;P为空气密度;。为风速;c为结构系数。结构系数因障碍物形状而异，平板的C值为l，圆柱形障碍物为一0.3。上式中(l+C)plZ通常称为风速系数，主要取决于结构系数和空气密度。常用的风压系数通常不考虑结构系数的作用，即为阿2，在标准大气条件下，它等于1/16。由于空气密度是气温、气压和湿度的函数，各地的风压系数变化较大。在中国，沿海地区大致为1117，内陆为ljl6，青藏高原1118~1/26。对于迎风侧不是平面的障碍物而言，因为有复杂的流体动力因素参与，实际风压与上式算出的风压有较大出人。(李世奎)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条