【摘要】 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.更多还原

【Abstract】 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 vari ous ODE problems including eigen-value problem, the natural frequencies and vibrational modes are obtained, and the dynamical behaviors for different parameters are discussed.更多还原