884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

 順風(fēng)向等效風(fēng)荷載及響應(yīng)
    ——主要國(guó)家建筑風(fēng)荷載規(guī)范比較

洪小健　顧  明?。ㄍ瑵?jì)大學(xué)土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室  上海　200092）

[提要]  詳細(xì)地比較了中、美、歐、日、加、澳等國(guó)風(fēng)荷載規(guī)范中順風(fēng)向響應(yīng)的計(jì)算內(nèi)容。通過對(duì)基本風(fēng)壓、平均風(fēng)速剖面、湍流強(qiáng)度剖面、脈動(dòng)風(fēng)速譜、相關(guān)函數(shù)等多個(gè)方面的詳細(xì)分析比較，指出中國(guó)規(guī)范在湍流強(qiáng)度、響應(yīng)峰值系數(shù)的選取、相關(guān)函數(shù)的選用等方面可能存在的問題，并用各國(guó)風(fēng)荷載規(guī)范完整地計(jì)算比較了一幢高層建筑結(jié)構(gòu)的順風(fēng)向等效設(shè)計(jì)風(fēng)荷載和順風(fēng)向風(fēng)振響應(yīng)。
[關(guān)鍵詞]  規(guī)范  風(fēng)荷載  風(fēng)振響應(yīng)  湍流度  相關(guān)函數(shù)  峰值系數(shù)

This paper presents the detailed comparison on the guidelines and procedures about computing along-wind response of tall  buildings  in  GB50009-2001, ACSE7-98, Eurocode  1995, RLB-AIJ1996, NBC1995, SAA  Loading  Code 2000. With the minute comparisons on basic wind pressure, mean velocity profile, turbulence intensity profile, wind spectrum, correlation structure,it seems that there are several points that must be paid attention to,such as turbulence intensity,response peak factor, correlation structure in C,hinese code. The equivalent static pressure and response for a tall building are presented to illustrate the overall comparison among various codes.
Keywords: code; wind load; wind induced vibration response; turbulence intensity; coherence structure; peak factor

　　參　考　文　獻(xiàn)
1．建筑結(jié)構(gòu)荷載規(guī)范 （GB50009-2001)）．
2．Minimum design loads for building and other structures (ANSI/ASCE7-98).1999.
3．Basis of design and actions on structures-Part2-4: Actions on structures-wind actions. European Standard, 1995 .
4．AIJ Recommendations for Loads on Building. 1996.
5．The National Building Code of Canada. 1995.
6．SAA Loading Code, Part 2-wind loads. Australian Standards, 2000.
7．Simiu E, Scanlan R H. Wind effects on structures. John Wiley & Sons, lnc, 1996.
8．Solari G. Alongwind response estimation: closed form solution. J. Struct.Div.ASCE,1982,108(1).
9．Shiotani M,Avai H.International conference on the wind effect on the building.s and structures. 1967, ( 1 ) .
10．Xu Y L, Zhan S. Field measurements of Di Wang Tower during typhoon York. J . wind Eng. , Ind. Aerody, 2001, ( 89).
11．Mallet．信號(hào)處理的小波導(dǎo)引．科學(xué)出版社，2000.