脉动风荷载模拟中几点问题的探讨  

Discussion of Some Problems During Simulating Fluctuant Wind Load

作　　者：陆飞[1] 李爱群[1] 程文瀼[1] 陈忠范[1] 

机构地区：[1]东南大学土木工程学院,南京210096

出　　处：《特种结构》2002年第3期18-20,共3页Special Structures

摘　　要：本文列举了 2种规格化功率谱密度函数的表达式 ,简要介绍了脉动风荷载模拟的过程及方法。通过对 2种谱函数的分析和比较 ,提出了风荷载模拟中应该注意的问题以及经常容易出错的地方。文中通过对南京电视塔进行 1 6维脉动风荷载的模拟 ,比较了 2种规格化谱的各自特点 ,分析了误差产生的原因 ,并对各自的计算机耗时进行了比较 ,得出了某一规格化谱表达式较优的结论。In this paper,the main process and method of simulating fluctuant wind load was introduced and one new numerical method of decomposing the power spectrum function was also suggested herein.After analyzing and comparing two power spectrum functions,some key points was brought forward.Through simulating the 16 dimensions fluctuant wind load of Nanjing TV tower,the author analyzed the reasons of data error and got some conclusion about that.The time cost druing the simulation was also compared.Finally,the author suggested one of these two functions as the best one.

关 键 词：脉动 风荷载 规格化谱 谱分解 

分 类 号：TU312.1[建筑科学—结构工程]