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（同濟(jì)大學(xué)建筑設(shè)計(jì)研究院（集團(tuán)）有限公司， 上海 200092）

［摘要］衡陽(yáng)市新一代天氣雷達(dá)塔樓總高度為131-6m，頂部安裝CINRAD新一代多普勒天氣雷達(dá)系統(tǒng)。由于結(jié)構(gòu)自身特性無(wú)法滿足雷達(dá)生產(chǎn)廠家提出的結(jié)構(gòu)自振頻率大于1Hz的要求，通過(guò)對(duì)上海氣象雷達(dá)塔的實(shí)測(cè)，得到CINRAD新一代多普勒天氣雷達(dá)系統(tǒng)的轉(zhuǎn)動(dòng)頻率，與計(jì)算得到的衡陽(yáng)市新一代天氣雷達(dá)塔樓結(jié)構(gòu)第1階自振頻率之比為0735，遠(yuǎn)在共振區(qū)范圍之外；根據(jù)結(jié)構(gòu)動(dòng)力學(xué)相關(guān)公式及測(cè)試結(jié)果，推導(dǎo)出雷達(dá)天線運(yùn)行時(shí)塔頂?shù)募铀俣软憫?yīng)幅值為7-3cm/s2。因此，CINRAD新一代多普勒天氣雷達(dá)系統(tǒng)可以用于衡陽(yáng)市新一代天氣雷達(dá)塔樓，不會(huì)發(fā)生共振，且加速度響應(yīng)較小。

［關(guān)鍵詞］天氣雷達(dá)塔樓； CINRAD多普勒天氣雷達(dá)系統(tǒng)； 自振頻率； 共振； 加速度響應(yīng)

中圖分類號(hào)：TU392-6文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)04-0058-05

Research on structural vibration parameter and resonance of Hengyang New Generation Weather Radar Tower

He Guirong

(Tongji Architectural Design (Group) Co.,  Ltd.,  Shanghai 200092, China)

Abstract:Hengyang New Generation Weather Radar Tower has a total height of 131-6m, and CINRAD New Generation Doppler Weather Radar System is installed on the top. Because of the structure characteristics, the self-vibration frequency of Hengyang Radar Tower cannot meet the requirement proposed by radar manufacturer that the self-vibration frequency of building should be larger than 1Hz. The rotational frequency of CINRAD New Generation Doppler Weather Radar System was obtained through the measurement of Shanghai Weather Radar Tower. The ratio of the rotational frequency of CINRAD to the calculated first order self-vibration frequency of Hengyang Radar Tower was 0-735, which was far beyond resonance zone. According to the structural dynamics formula and test results, the amplitude of the acceleration response at the top of Hengyang Radar Tower was deduced as 7-3cm/s2 when the radar antenna was running. As a consequence, CINRAD New Generation Doppler Weather Radar System could be installed on the top of Hengyang New Generation Weather Radar Tower, and the resonance would not occur and the acceleration response was small.

Keywords:weather radar tower； CINRAD Doppler Weather Radar System； self-vibration frequency； resonance； acceleration response

作者簡(jiǎn)介：何桂榮，碩士，工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：xh.tj@163.com。