[提要]  用沿高度方向分段连续化的方法，对底部为大底盘、上部为多塔楼、塔楼间带连廊的高层建筑结构，建立一个分段连续的串并联振动模型，导出其水平振动的弯扭耦连振动微分方程组，用常微分方程求解器COLSYS求解其自振频率及相应的振型。讨论了连廊不同刚度时的振动特性。为复杂结构提供了一种可用的动力计算简化方法。
[关键词]  高层建筑结构 大底盘 多塔楼 带连廊 水平振动

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