康仲山     （广州市城镇建筑设计院 510100）

      王克成     （西安理工大学 710048）

 

[提要]  本文首次将模拟地基的映射动力无穷元与有限元耦合模型应用予框剪结构一地基系统的动力相互作用分析中。分析了E_g/E_s, H/L等参数对上述动力耦合系统相互作用的影响，得出了一些有益的结论。
[关键词]  动力无穷元 有限元 耦合  动力相互作用  框架剪力墙结构

The distinguishing features of the subject of this thesis are that the structure is a finite domain and the foundation is an infinite domain. The more rational numerical model for dynamic interaction problem of 2-D frame-shear wall structure and foundation system is presented. For the first time, the infinite ele-ment method was used to analyze the problem of coupling vibriation of 2-D frame-shear wall structure and foundation. Two coupling elements were provided to deal with the problem of the element linking
between structure and foundation by means of applying the transitional beam element and between frame and shear wall applying the primary and secondary node in ordor that finite element analysis of frame-shear wall structure would be more realistic and reasonable. On foundations of various stiffnesses,  the natural virbration characteristics of 4-10 storeyed frame-shear wall structure-foundation system were evaluated at carrying harmonic in the top. An important result of dynamic interaction's effect has been achieved through analysing main parameters such as Young's modulus ration of foundation with structure and heigh-span ratio of frame-shear wall.
Keywords:  dynamic infinite element; finite element; coupling; dynamic interaction; frame-shear will;
foundation