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[提要]  用沿高度方向分段連續(xù)化的方法，對(duì)底部為大底盤、上部為多塔樓、塔樓間帶連廊的高層建筑結(jié)構(gòu)，建立一個(gè)分段連續(xù)的串并聯(lián)振動(dòng)模型，導(dǎo)出其水平振動(dòng)的彎扭耦連振動(dòng)微分方程組，用常微分方程求解器COLSYS求解其自振頻率及相應(yīng)的振型。討論了連廊不同剛度時(shí)的振動(dòng)特性。為復(fù)雜結(jié)構(gòu)提供了一種可用的動(dòng)力計(jì)算簡化方法。
[關(guān)鍵詞]  高層建筑結(jié)構(gòu) 大底盤 多塔樓 帶連廊 水平振動(dòng)

Using the commonly used continuum technique for multi-tower structure linked by spatial corridors and with enlarged base at the bottom, a new piecewise continous series-parallel vibrational model is established. Then, the vibrational differential equations for the model are derived. Moreover, using the ODE ( Ordinary Differential Equation ) solver, which is a general-purpose program developed for solving various ODE problems including eigen-value problem, the natural frequencies and vibrational modes are obtained, and the dynamical behaviors for different parameters are discussed.
Keywords: tall building structure; multi-tower; enlarged base; spatial corridors; horizontal vibration