用子结构凝聚法在微机上分析高层钢结构

Sub—structure Condensation Method Analying Tall Steel Building on P.C

采用子结构凝聚法,以楼层段划分子结构,引入广义单元,利用交界处的位移协调及力的平衡组集整个结构的刚度方程.在程序实施时用"滞后迭代"的措施降低方程维数.使考虑节点域剪切变形影响的高层钢框架结构的二阶分析得以在微机上实现.

The sub-structure condensation method is used in the paper.Some continu- ous and identical floors are defined as one sub-structure,generalized element as well as displacement consistency and force equilibrium conditions are used to obtain the total sliffness matrix.In the program design,the post iteration schemes are employed so as to reduce the order of equation.Then,the two stage analysis for shear deformation of steel frame in nodal domain can realized on PC.