摘要
本文将样条有限元法分析直接承受建筑物的桩基和土体,用半解析无限元法分析外围半无限土体,分析了相邻建筑物的相互作用.用这种耦合方法不仅具有输入数据少,计算工作量小,并且避免了人为有限边界的影响.最后运用模态综合法进行地震反应分析.数值计算表明,当两结构相邻较近时,单体结构与双体结构在自振特性,尤其位移、基底总剪力等方面均有差异.
The analysis of the interaction of neighboring buildings-pile-soil is intro-duced in this paper, in which the spline finite element method is used to investigate the pile-soil under and between the neighboring buildings,while the semi analytical infinite element method is used to analyse the semi-infinite soil beyond the buildings.In comparison with other methods, the suggested coupling-method not only has the advantage of less input data, less amount of computa tion and more satisfactory precision, but also avoids the influence of artificial finite boundary.Finally, the Seismic response of the complicated system is solved by use of the model synthetic technique.It has been shown by the numerical examples, when the two buildings are rather near to each other, the frequency, especially the displacement and total base shear of a single building are quite different from those in consideration of the neighboring buildings.
出处
《土木工程学报》
EI
CSCD
北大核心
1995年第5期32-38,共7页
China Civil Engineering Journal
