A simple method for calculating the Ⅱ order and internal force of tall steel frames is presented.

The analysis of the nodes design for multi-layer steel framework structure;

In this thesis, the sub-structure technique is adopted to perform nonlinear planar seismic response analysis considering soil-structure interaction for high-rise frame structures with box foundation or raft foundation resting on natural foundation soils.

As shows by example of calculation, it is a handy method with small error of calculation, It can be met with the demand of accuracy in calculation of engineering design, It is suitable for use in high-rise frame structure of reinforced concrete and also steel frame.

With geometrical nonlinearity taken into consideration, the elastic-plastic hinge method for physical nonlinearity analysis of tall frameworks is applied in the paper, and ultimate load capacity is also studied.