This paper studied the material nonlinear problems , geometric nonlinear problems and double nonlinear problems , which includes both material and geometric nonlinear problems , of tall frames . at first i built up the stiffness equations of nonlinear problems by qr - method , then solved them by incremental iterative method , finally wrote the corresponding programs by c and calculated some examples 本文研究高层框架的材料非线性问题、几何非线性问题及双重非线性问题,即既含材料非线性问题又含几何非线性问题,先利用qr法建立非线性问题的刚度方程,然后利用增量迭代法求解非线性刚度方程,并用c语言编制计算程序,计算了一些例题。
In order to solve the static , dynamic and material nonlinear problems of mega - frame structure , this paper analyzes mega - frame structure by qr - method and sets up a new computational form . in this paper , the author adopts the method of repeated increment and no limit stabilization to handle t he elastic - plastic rigid equation and dynamic equation 然后,利用qr法对巨型框架结构进行分析,解决该结构的静力、动力及材料非线性问题,利用增量迭代法及样条无条件稳定算法分别求解弹塑性刚度方程及动力方程,建立了高层巨型框架结构分析的新的计算格式。
Secondly the author ' s study are introduced in this paper . the author study mainly the linear static and dynamic , elastic - plastic static and dynamic problems of cfst arc - bridge . firstly , the author establish the linear static equation on the based of the rigid equation of element by qr - method , and then analysis the inner force of arc bridge , establish the linear dynamic equation and elastic - plastic rigid equation and dynamic equation , then solve respectively the elastic - plastic rigid and dynamic equation by the method of repeated increment and no limit stabilization , arithmetic 本文主要研究大跨度钢管混凝土桁架拱线性静力问题和线性动力问题以及弹塑性静力问题和弹塑性动力问题,先利用qr法按照梁单元的刚度方程建立桁架拱的线性静力方程,进行桁架拱内力分析,建立桁架拱线性动力方程、弹塑性刚度方程及弹塑性动力方程,然后利用增量迭代法及样条无条件稳定算法分别求解弹塑性刚度方程及动力方程。