本文選題：人行激勵　切入點(diǎn)：姿態(tài)轉(zhuǎn)換矩陣　出處：《振動.測試與診斷》2017年04期

【摘要】：為建立人行荷載的傅里葉級數(shù)模型,采用新型微電子機(jī)械系統(tǒng)AH100B加速度傳感器得到201人次、1 407條連續(xù)行走在樓板上的荷載曲線。根據(jù)姿態(tài)角形成的姿態(tài)矩陣可將載體坐標(biāo)系下的三軸加速度轉(zhuǎn)換到自然坐標(biāo)系下,通過快速傅里葉變換計(jì)算人行荷載縱向、側(cè)向和豎直方向前4階動力荷載因子及相位角,得出用于解決結(jié)構(gòu)振動舒適度問題的三向傅里葉級數(shù)荷載模型。采用小波變換得到單條荷載曲線的時頻圖,反映出單人在行走過程中行走頻率的變異性。將荷載模型與已有的其他模型進(jìn)行比較,驗(yàn)證了荷載模型的合理性及可行性,為解決大跨度結(jié)構(gòu)人行激勵產(chǎn)生的振動問題提供了參考。
[Abstract]:In order to establish the Fourier series model of pedestrian load, A new type of AH100B acceleration sensor of microelectromechanical system is used to obtain 1 407 load curves for continuous walking on the floor slab. According to the attitude matrix formed by attitude angle, the triaxial acceleration in the carrier coordinate system can be converted to the natural coordinate system. The longitudinal, lateral and vertical first four order dynamic load factors and phase angles are calculated by fast Fourier transform. A three-direction Fourier series load model is obtained to solve the problem of structural vibration comfort. The time-frequency diagram of a single load curve is obtained by wavelet transform. By comparing the load model with other existing models, the rationality and feasibility of the load model are verified. It provides a reference for solving the vibration problem of long span structure caused by pedestrian excitation.
【作者單位】： 蘭州理工大學(xué)防震減災(zāi)研究所;大連理工大學(xué)建設(shè)工程學(xué)部;東南大學(xué)土木工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51668042,51508257) 教育部長江學(xué)者創(chuàng)新團(tuán)隊(duì)資助項(xiàng)目(IRT13068) 甘肅省高等學(xué)�？蒲匈Y助項(xiàng)目(2015B-34)
【分類號】：TU312.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 陳雋;王玲;王浩祺;;單人跳躍荷載模型及其參數(shù)取值[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年06期

，

本文編號：1656184