This paper is concerned with the evaluation of the seismic resistant dynamical characteristics of composite foundation . the dynamical finite element numerical analysis is performed for this purpose . comprehensive analysis has been made to research characteristics of ground motion and ground seismic resistant of composite foundation to promote its application in seismic area 本文通过动力有限元数值分析对复合地基的抗震特性进行了评价，较全面地分析了地震作用下复合地基的地面运动特性和地基自身的抗震特性，旨在推进复合地基这一地基加固形式在地震区的推广应用。
The rectangular concrete - filled steel tubular ( cfst ) composite structures have the special properties , such as high - strength , good ductility , better seismic behavior , and convenient construction , etc . study on the seismic performance of rectangular concrete - filled steel tubular column to steel beam connections has the important theoretical significance and huge engineering values , and also helps to understand the mechanic behavior and configuration of the connection , to promote the applications of this kind of composite structures in seismic area of china 矩形钢管混凝土组合结构具有强度高、延性好、抗震性能优越、施工方便等特点。开展矩形钢管混凝土梁柱节点的抗震性能研究，对于了解节点力学性能，改善节点构造，促进矩形钢管混凝土组合结构在地震区的推广应用具有重要的理论意义与工程应用价值。
The principles of reasonable setting and construction measures and design outlines of frame - tube structure with rigid strengthened story are presented in the seismic region . finally , the design theories of stiffness strengthened story succeed to be applied on a project using the structural concept design in this paper 针对其动力反应的特点，提出了抗震地区带刚性加强层框架-核心筒合理布置原则及结构构件抗震加强措施，以及在地震区采用带加强层的框架-核心筒结构的设计要点。
