模擬脈動(dòng)風(fēng)速場(chǎng)下高層結(jié)構(gòu)調(diào)諧質(zhì)量阻尼器群智能優(yōu)化控制*
王小金1,2，朱大勇1,2，黃偉1,2，劉誠1,2，盧坤林1,2
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（1 合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009； 2 土木工程結(jié)構(gòu)與材料安徽省級(jí)實(shí)驗(yàn)室， 合肥 230009）
［摘要］利用抽取時(shí)間的快速傅里葉變換技術(shù)優(yōu)化諧波疊加法，根據(jù)Davenport脈動(dòng)風(fēng)速譜，模擬了風(fēng)速時(shí)程曲線，在生成的脈動(dòng)風(fēng)速譜密度曲線中，目標(biāo)譜與模擬譜走勢(shì)高度一致，為風(fēng)振控制計(jì)算的精確性提供了有力保證。高層結(jié)構(gòu)采用的是國際通用的第二代Benchmark模型，控制方法為調(diào)諧質(zhì)量阻尼器(TMD)控制；并引入粒子群優(yōu)化算法，以結(jié)構(gòu)層絕對(duì)位移和的無窮范數(shù)為目標(biāo)函數(shù)進(jìn)行了優(yōu)化研究；為考察此方法的魯棒性，分別對(duì)結(jié)構(gòu)考慮了無剛度不確定性以及具有±15%剛度不確定性的情形，數(shù)值計(jì)算結(jié)果表明了優(yōu)化TMD控制在高層結(jié)構(gòu)風(fēng)振控制中的有效性，為人工智能技術(shù)在傳統(tǒng)結(jié)構(gòu)振動(dòng)控制領(lǐng)域的應(yīng)用提供了廣闊的思路。［關(guān)鍵詞］調(diào)諧質(zhì)量阻尼器; 諧波疊加法; Benchmark結(jié)構(gòu); 層絕對(duì)位移和; 粒子群算法中圖分類號(hào)：TU112.41 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)19-0041-07
Intelligent optimal control of tuned mass damper groups for highrise structure excited by simulated fluctuating wind speed fieldWang Xiaojin1, 2, Zhu Dayong1, 2, Huang Wei1, 2, Liu Cheng1, 2, Lu Kunlin1, 2（1 School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 2 Anhui Provincial Laboratory of Civil Engineering and Materials, Hefei 230009, China）Abstract: The Fast Fourier Transform technology based on Decimation In Time (DIT-FFT) was employed to optimize the harmonic wave synthesis method, and the wind speed time-history curves were numerically simulated according to Davenport fluctuating wind speed spectrum. As observed from the generated spectral density function curves, the objective spectrum was highly consistent with the trend of simulated spectrum, which provided a strong guarantee for accuracy of windinduced vibration control computing. The second generation Benchmark structure was universal internationally, and tuned mass damper (TMD) algorithm was served as the controller for high-rise structure. Particle Swarm Optimization (PSO) algorithm was introduced to be the optimization tool, and the infinity norm of Layer Absolute Displacement Sum (LADS) was selected as the fitness function to carry out optimization study. In addition, no uncertainty and ±15% stiffness uncertainty in stiffness were considered respectively for robustness study. The numerical calculation results reveal that optimal control of TMD has an excellent capability in reduction of the wind-induced vibration of the high-rise building, and it can provide a broad view for application of artificial intelligence technology in traditional structural vibration control field.Keywords: tuned mass damper; wave synthesis method; Benchmark structure; Layer Absolute Displacement Sum; Particle Swarm Optimization
*國家自然科學(xué)基金資助項(xiàng)目（51179043）。作者簡(jiǎn)介：王小金,碩士研究生, Email: xiaojin_wang_hfut@126.com。
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