动力凝聚技术的应用

对于多层多跨框架、大开洞剪力墙、框架一剪力墙等结构的动力特性分析，整个结构的动力自由度数很大，求解特征值问题较困难，因此，本文采用动力凝聚法对这类结构进行动力特性分析，即采用动力凝聚法从结构的整体刚度矩阵中求出结构的侧移刚度矩阵，从而把原来的结构转化为带有集中质量的杆件模型，这样便可以较容易地求出结构的频率和振型。通过与具体算例的比较，证明本文采用动力凝聚法计算结构的频率和振型是可行的。

Application of Dynamic Cohesion

The numbers of degree of freedom of motion of the frame structure with many stories and spans, the shell wall structure with big window in the shell wall, the frame-shell wall structure are large and the solution of eigenvalue problem is difficult. So in this paper the dynamic cohesion method is used to analyze the dynamic feature of these structures, i.e. the lateral stiffness matrix of the structure is extracted from the whole stiffness matrix by the method, and the model that has concentration weight is got. The nature vibration frequencies and modals of the structure are easier solved by the method. Using the dynamic cohesion method to solve the frequencies and modals of the structure is proved correct by example in this paper.