[提要]  本文采用有限元-边界元耦合方法，对高层建筑与地基基础的联合作用进行了考虑材料非线性的分析。地基部分用二次曲线等参边界单元来模拟；上部结构中的混凝土及受拉主钢筋分别用八节点等参单元和二节点线形单元来模拟；而混凝土与钢筋之间的粘结-滑移关系则用四边形联结单元来模拟。根据两部分接触面上位移协调和力的平衡条件，将FEM和BF'M进行耦合。用FORTRAN77语言编制了计算机程序，并在COMPAQ386/20e计算机上进行了实例计算，结果令人满意。该方法充分发挥了有限元在非线性分析中的优势和边界元在半无限域应用中的优势，较之单一的有限元法，具有数据准备简单，机时耗费量和内存需求量少，计算精度高的优点。
[关键词]  高层建筑 地基土-结构 联合作用  非线性分析 有限元-边界元耦合法

The FEM-BEM coupled method has been used to analyse tall building-foundation-soil interaction taking material nonlinear properties into account. Quadratic curve isoparametric boundary elements model soil, eight-nodes isoparametric finite elements were used for concrete or reinforced concrete in beams and columns, bar elements with two nodes were used for steel reinforcements, quadrilateral link elements were used to model the bonding and slipping conditions between steel line and concrete in beams and columns. According to the conditions of displacement compatibility and force equilibrium on the interface, the FEM and the BEM were coupled. The results of calculation is satisfying. Compared with single FEM,  it has the advantages of the covenient preparation of data and the high precision of calculation.
Keywords: tall  building; interaction; nonlinear analysis; FEM-BEM coupled method; foundation