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(1 防災(zāi)科技學(xué)院， 三河 065201； 2 廣東省地震局， 廣州 510070； 3 中國(guó)地震局地震監(jiān)測(cè)與減災(zāi)技術(shù)重點(diǎn)實(shí)驗(yàn)室， 廣州 510070；4 廣東省地震預(yù)警與重大工程安全診斷重點(diǎn)實(shí)驗(yàn)室， 廣州 510070)

［摘要］通過強(qiáng)震動(dòng)監(jiān)測(cè)臺(tái)陣對(duì)深圳地王大廈進(jìn)行長(zhǎng)期的環(huán)境振動(dòng)監(jiān)測(cè)，并結(jié)合風(fēng)和溫度等氣象數(shù)據(jù)，研究了2014年1月～10月期間風(fēng)、溫度、結(jié)構(gòu)加速度響應(yīng)和各階模態(tài)頻率的變化及其相關(guān)性，分析了風(fēng)和溫度對(duì)模態(tài)頻率監(jiān)測(cè)的影響；分別采用多元線性回歸和支持向量機(jī)技術(shù)兩種方法進(jìn)行建模，模擬風(fēng)和溫度對(duì)模態(tài)頻率的共同影響，并分析比較不同模型的預(yù)測(cè)效果；基于風(fēng)和溫度數(shù)據(jù)預(yù)測(cè)模態(tài)頻率的成功率，提出了一種簡(jiǎn)便的結(jié)構(gòu)健康診斷方法。結(jié)果表明，地王大廈各階模態(tài)頻率多數(shù)與風(fēng)速和溫度呈負(fù)相關(guān)關(guān)系。兩種擬合模型均能較好地反映各階頻率的變化特征。

［關(guān)鍵詞］超高層建筑； 結(jié)構(gòu)健康監(jiān)測(cè)； 風(fēng)； 溫度； 頻率變化

中圖分類號(hào)：TU311-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)16-0113-08

Study of wind and temperature influences on natural frequencies of Diwang Plaza

Guo Xirui1, 2,3,4, Wang Lixin2,3,4, Jiang Hui2,3,4, Zhu Jiajian2,3,4, Zhu Min1

(1 Institute of Disaster Prevention, Sanhe 065201, China; 2 Guangdong Earthquake Administration, Guangzhou 510070, China; 3 Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology, CEA, Guangzhou 510070, China;  4 Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Projects, Guangdong Province, Guangzhou 510070, China)

Abstract:Long-term ambient vibration monitoring of  Diwang Plaza in Shenzhen has been conducted through a strong motion monitoring array. Combined with wind, temperature and other meteorological data, changes and correlations of wind, temperature, structural acceleration response and various order modal frequency during the period from January to October in 2014 were studied and the effects of wind and temperature on the modal frequency monitoring were studied; multiple linear regression and supporting vector machine method were used for modeling respectively to simulate the combined effects of wind and temperature on the modal frequencies and analyze and compare forecasting effects of different models;  based on wind and temperature data to predict the success rate of modal frequency, a simple structural health diagnosis method was proposed. The results show that most of the modal frequencies of the Diwang Plaza are negatively correlated with the wind speed and temperature. Two kinds of fitting models can well reflect the variation characteristics of the frequency of each order.

Keywords:super high-rise building; structural health monitoring; wind; temperature; frequency variation

*中央高?；究蒲袠I(yè)務(wù)費(fèi)(ZY20150313)，中國(guó)地震局地震監(jiān)測(cè)與減災(zāi)技術(shù)重點(diǎn)實(shí)驗(yàn)室、廣東省地震預(yù)警與重大工程安全診斷重點(diǎn)實(shí)驗(yàn)室建設(shè)項(xiàng)目(2011A060901006)，地震科技星火計(jì)劃(XH16031)，廣東省重大科技專項(xiàng)項(xiàng)目(2012A080102008)。

通訊作者：王立新，博士，副研究員，Email：wlxustc@hotmail.com。