本文選題：超高層建筑 + 原型實(shí)測　； 參考：《建筑結(jié)構(gòu)學(xué)報(bào)》2016年06期

【摘要】：采用自主研發(fā)的LAC-I無線加速度傳感器,對高度441.8 m的深圳京基100(KK100)的加速度響應(yīng)進(jìn)行了為期5年的連續(xù)監(jiān)測。選取了2011年至2015年間的4次主要臺風(fēng)(納沙、杜蘇芮、維森特和天兔)經(jīng)過時(shí)的加速度觀測數(shù)據(jù)以及常態(tài)弱風(fēng)和環(huán)境激勵(lì)下的加速度數(shù)據(jù),進(jìn)行結(jié)構(gòu)動力參數(shù)識別以及驗(yàn)證與風(fēng)洞試驗(yàn)結(jié)果的一致性。結(jié)果表明:各工況下自振頻率的識別結(jié)果具有很好的一致性,與其在設(shè)計(jì)階段對結(jié)構(gòu)進(jìn)行有限元分析得到的相應(yīng)結(jié)果約大21%;阻尼比的識別結(jié)果表現(xiàn)出一定的離散性,x、y兩個(gè)方向的阻尼比分別在0.6%~0.9%和0.33%~0.71%之間變化,但阻尼比與振幅并不存在明顯的相關(guān)性;在風(fēng)場條件基本一致的情況下,實(shí)測結(jié)果與風(fēng)洞試驗(yàn)結(jié)果具有良好的一致性;在振幅較大的橫風(fēng)向,實(shí)測和風(fēng)洞試驗(yàn)得到的結(jié)構(gòu)頂部峰值加速度響應(yīng)相差4.2%,說明了風(fēng)洞試驗(yàn)的可靠性。同時(shí)近5年來的連續(xù)觀測遇到了與深圳地區(qū)10年重現(xiàn)期風(fēng)壓相當(dāng)?shù)淖畲箫L(fēng)速,測得的瞬時(shí)峰值加速度僅為0.123 m/s2,表明該建筑的舒適度能夠滿足要求。
[Abstract]:The acceleration response of Shenzhen Jingji 100KK100 at a height of 441.8 m was monitored continuously for 5 years using LAC-I wireless accelerometer.The acceleration data of four major typhoons (Nasha, DuSuri, Vicente and Bunny) passing between 2011 and 2015, as well as acceleration data under normal weak winds and ambient excitation were selected.The dynamic parameters of the structure are identified and verified in accordance with the results of the wind tunnel test.The results show that the identification results of natural frequencies are consistent with each other.The results obtained from finite element analysis of the structure in the design stage are about 21 and the damping ratio identification results show that the damping ratio of the two directions varies between 0.690% and 0.330.71%, respectively.However, there is no obvious correlation between damping ratio and amplitude, when the wind field conditions are basically consistent, the measured results are in good agreement with the wind tunnel test results.The difference of peak acceleration response between the measured and the wind tunnel test shows the reliability of the wind tunnel test.At the same time, the continuous observation in the past five years has encountered the maximum wind speed equivalent to the wind pressure in the 10-year recurrence period in Shenzhen, and the measured instantaneous peak acceleration is only 0.123 m / s ~ (2), which indicates that the comfort of the building can meet the requirements.
【作者單位】： 華南理工大學(xué)亞熱帶建筑科學(xué)國家重點(diǎn)實(shí)驗(yàn)室;廣州大學(xué)廣東省工程結(jié)構(gòu)抗風(fēng)與健康監(jiān)測工程技術(shù)研究開發(fā)中心;深圳市力鵬建筑結(jié)構(gòu)設(shè)計(jì)事務(wù)所;同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(51278204,51478130)
【分類號】：TU973.213

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 謝壯寧;石碧青;倪振華;杜平;;深圳京基金融中心氣動抗風(fēng)措施試驗(yàn)研究[J];建筑結(jié)構(gòu)學(xué)報(bào);2010年10期

2 李秋勝;郅倫海;段永定;高金盛;蘇圣中;;臺北101大樓風(fēng)致響應(yīng)實(shí)測及分析[J];建筑結(jié)構(gòu)學(xué)報(bào);2010年03期

3 錢稼茹,過靜s，

本文編號：1752035