论文部分内容阅读
高层建筑的横风向荷载及响应问题非常复杂,来流紊流、尾流和气动反馈的激励与其息息相关,风荷载是高层建筑所承受的主要侧向荷载之一。在沿海地带和非地震区,风荷载又常常成为结构设计的控制荷载,而高层建筑结构设计中的重要部分是包括内力、风荷载、位移、加速度等结构抗风分析。目前,高层建筑横风向风效应研究的内容主要包括以下三个方面:确定横风向气动力、识别横风向气动的阻尼和计算横风向等效静力风荷载的方法,同时确定高层建筑横风向风效应的主要手段有风洞试验、数据拟合和参数识别技术。本文主要讲了横风向气动力的确定、横风向气动阻尼的识别以及横风向等效静力风荷载的计算方法三个方面的内容。
The cross-wind load and response problems of high-rise buildings are very complex. The turbulence of turbulence flow, the wake of wake flow and aerodynamic feedback are closely related to it. Wind load is one of the major lateral loads on high-rise buildings. In coastal areas and non-seismic areas, the wind load often becomes the control load of structural design. The important part in the structural design of tall buildings is wind resistance analysis including internal forces, wind loads, displacements and accelerations. At present, the study on the wind effect of high-rise buildings across the wind mainly includes the following three aspects: to determine the cross-wind aerodynamics, identify the cross-wind aerodynamic damping and calculate the cross-wind equivalent static wind load method, The main means of the effect of wind tunnel test, data fitting and parameter identification technology. This paper mainly talks about the three aspects of the determination of the aerodynamic force in the crosswind direction, the identification of the aerodynamic damping in the crosswind direction, and the calculation method of the equivalent static wind load in the crosswind direction.