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基于中美两国荷载规范,采用参数对比分析,讨论了二者高层建筑主体结构风荷载值计算的异同。分析了基本风速、风振系数、风载体型系数以及风压高度变化系数等参数的取值差异和原因。在此基础上,分别运用中美规范计算了某高层结构的风荷载标准值,结果表明,按美国规程计算的风荷载标准值大于按中国规范计算的值,但随着高度的增加差距逐渐缩小。
Based on the load specifications of China and the United States, the parametric comparative analysis is used to discuss the similarities and differences between the wind load values of the two main structures of the tall buildings. The differences of the values of the basic wind speed, the wind-induced vibration coefficient, the wind-loaded body coefficient and the variation coefficient of the wind pressure height and the reasons are analyzed. On this basis, the standard values of the wind load of a high-rise structure were calculated using the Chinese and American codes respectively. The results show that the standard values of the wind loads calculated according to the U.S. regulations are larger than the values calculated according to the Chinese codes, but the gap gradually decreases as the height increases .