帶懸吊閥體的大型換流站閥廳結(jié)構(gòu)地震反應(yīng)分析*
劉宗輝1，吳軼2，蔡健3,4，楊春3,4，唐冬5，陳寅1
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劉宗輝1，吳軼2，蔡健3,4，楊春3,4，唐冬5，陳寅1（1 廣東省電力設(shè)計研究院，廣州 510600；2 廣州大學土木工程學院，廣州 510006；3 華南理工大學土木與交通學院，廣州 510640；4 亞熱帶建筑科學國家重點實驗室，廣州 510640；5 廣州大學機械與電氣工程學院，廣州 510006）[摘要] 以大型換流站閥廳實際工程為背景，利用ABAQUS軟件對懸掛閥前后的閥廳結(jié)構(gòu)進行多遇地震作用下的非線性動力時程分析，研究懸吊設(shè)備自身以及閥廳結(jié)構(gòu)在地震作用下的響應(yīng)，探討懸吊設(shè)備重量變化對閥廳結(jié)構(gòu)的影響。分析表明閥廳結(jié)構(gòu)扭轉(zhuǎn)明顯，但懸吊閥的重量的增大對閥廳結(jié)構(gòu)影響不大。在水平地震作用下，懸吊閥對閥廳的影響較??；而豎向地震作用下，懸吊閥與閥廳的相互作用顯著，閥體的加速度響應(yīng)達到地震動輸入峰值的5倍，屋架跨中上弦掛閥前后位移峰值相差達25%，閥廳結(jié)構(gòu)設(shè)計中，應(yīng)該考慮豎向地震作用下懸掛閥-閥體結(jié)構(gòu)相互作用。[關(guān)鍵詞] 閥廳；時程分析；地震反應(yīng)中圖分類號：TU311-3文獻標識碼：A文章編號：1002-848X(2012)10-0119-05Seismic response of valve-hall structure with suspended valves of large-scale converter stationLiu Zonghui1，Wu Yi2，Cai Jian3,4，Yang Chun3,4，Tang Dong5，Chen Yin1(1 Guangdong Electric Power Design Institute, Guangzhou 510600, China; 2 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China; 3 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; 4 State Key Laboratory of Subtropical Building Science, Guangzhou 510640, China; 5 School of Mechanical and Electrical Engineering, Guangzhou University, Guangzhou 510006, China)Abstract: Based on a valve-hall structure of large-scale converter station, nonlinear dynamic time history analysis of valve-hall structure with and without suspended valves was done by adopting ABAQUS software. The seismic response of suspended valves and major structure of valve hall were analyzed, and the effects of the weight of suspended equipments on valve-hall structure were discussed. The results show that torsional response of the valve-hall structure is significant, and effect of the weight of suspended valves on valve-hall structure is insignificant. Under horizontal earthquake actions, effects of suspended valves on seismic behaviors of valve-hall structure are much minor, while under vertical earthquake actions, the effects between suspended valves and valve-hall structure are significant. The peak acceleration response of suspended valve is 5 times of the peak acceleration of input ground excitation, and the peak displacement of the top truss in mid-span with suspended valves is about 1.25 times of that without suspended valves. The interaction between suspended valves and valve-hall structure should be taken into account in the design under vertical earthquake actions.Keywords: valve-hall；time history analysis；seismic response*國家自然科學基金(50878087)，廣東省自然科學基金(8151009101000010)，廣東省自然科學基金團隊項目(8351009101000001)，建設(shè)部項目(2009-2K-36)，中央高校基本科研業(yè)務(wù)費(20092M0230)，亞熱帶建筑科學國家重點實驗室項目(X2TJ-C709025z)，廣州市教育局項目(10A041)資助項目。作者簡介：劉宗輝，學士，高級工程師， Email：liuzonghui@gedi.com。參考文獻［1］魏文暉，周興樂，胡孝平.換流站閥廳結(jié)構(gòu)地震效應(yīng)動力分析［J］. 建筑結(jié)構(gòu)，2010，40(3)：75-77.［2］李保德，胡孝平，魏文暉，等.具有懸掛質(zhì)量結(jié)構(gòu)體系地震效應(yīng)分析［J］. 武漢理工大學學報，2008，30(10)：89-91.［3］劉宗輝，朱海華，葉盛.換流站閥廳懸吊閥地震作用研究［J］. 電力建設(shè)，2009，30(4)：19-21.［4］劉宗輝，朱海華，葉盛.特高壓換流站閥廳懸吊閥地震作用研究［J］. 南方電網(wǎng)技術(shù)，2009，3(1)：24-26.［5］焦勇，黃紅，沈林.閥廳主體結(jié)構(gòu)和懸吊閥的地震反應(yīng)分析［J］.武漢大學學報:工學版，2010，43(S1)：70-72.［6］錢鵬，王建，周建龍.換流站閥廳結(jié)構(gòu)設(shè)計動力系數(shù)研究［J］. 建筑結(jié)構(gòu)，2009，39(S1)：631-633.［7］黃利軍.閥廳結(jié)構(gòu)的振動測試與非線性動力分析研究［D］.武漢：武漢理工大學，2007.
