【摘要】 大底盘非对称塔楼是一种复杂的结构体系,结构的上下刚度变化很大。采用PKPM软件中SATWE模块对一组上下刚度比值不同的非对称塔楼结构建模分析,计算得到结构的固有周期和模态振型,认为底盘与塔楼刚度比值β变化对结构各振型的振动模式影响不大,当β值取为3时,结构的周期和整体位移均达最小值。更多还原

【Abstract】 The unsymmetrical tower building with enlarged base is a kind of complicated structure system,its stiffness change remarkably from the bottom up.The analytical natural period and mode shapes of a series of models with different stiffness ratio were obtained by using the SATWE module of the software,PKPM.The vibrational modes of structure change little whileβvalue is changed.When value ofβis 3,the natural period and displacement of structure all touch their bottom.更多还原