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针对高层建筑结构总刚度矩阵的特点,提出了对内部自由度刚度部分的分解与侧移自由度刚度部分的改造二步进行的计算方法,来完成对总刚中局部自由度的静力缩聚,建立结构侧移刚度阵以及完整求解。该方法在做Cholesky分解与回代时,采取了分块计算,有效地压缩了计算对基本内存容量的需求。该方法更新了适用于大型机的消元与改造一步完成的计算方法,发展了三对角块矩阵分块分解的技巧,使具有复杂平面布置的高层建筑结构设计计算能在微型机上完成。
Aiming at the characteristics of the total stiffness matrix of high-rise building structures, a two-step reconstruction method for the decomposition of the stiffness of the internal freedom and the transformation of the stiffness of the side-shift freedom is proposed to complete the static polycondensation of the total free-domestic degree of freedom. Establish the structure side-shift stiffness matrix and complete solution. When doing the Cholesky decomposition and back-generation, the method adopts block calculation, which effectively reduces the computational requirement for the basic memory capacity. This method updates the calculation method for elimination and reconstruction of the mainframe in one step, and develops the three-dimension block matrix decomposing technique, so that the high-rise building structure design calculation with complex plane layout can be completed on the microcomputer.