论文部分内容阅读
采用同步测压技术,进行了不同锥率的超高层建筑刚性模型风洞试验,根据试验结果得到了该类建筑物的横风向风荷载数学模型.根据作用机理,通过在已有矩形超高层建筑横风向风荷载功率谱模型中增加紊流机理项的方法,给出了精细化拟合公式,修正后的横风向风荷载功率谱模型在工程结构一般频率范围内与试验结果吻合较好.锥率没有改变超高层建筑横风向风荷载相干函数的频谱特性,已有超高层建筑相干函数模型对锥形超高层建筑仍然适用.本文提出的锥形超高层建筑横风向风荷载模型能够用于确定该类结构的横风向风致效应.
The wind tunnel test of rigid model of super high-rise building with different conicity rate was carried out by using synchronous pressure measurement technique, and the mathematical model of transverse wind load of the building was obtained according to the test results.According to the mechanism of action, The method of adding turbulence mechanism to the power spectrum model of transverse wind wind load is given, and the fitting formula of the fine wind turbine is given. The modified transverse wind wind power spectrum model is in good agreement with the experimental result in the general frequency range of engineering structure. The frequency does not change the spectral characteristics of the crosswind wind load coherence function of super high-rise buildings, the existing super high-rise building coherence function model is still applicable to the tapered super high-rise building.This paper proposed the tapered wind load model of super high-rise building can be used to determine Wind-induced wind effect of this type of structure.