布索轻钢门式刚架受力性能的研究

Mechanic Performance Research of Lightweight Portal Frame With Cable

以两跨门式刚架为研究对象,探讨索布置(包括索支承布置)的合理形式并确定两种布索方案.以两榀等跨度双跨轻钢门式刚架为模型,采用平面梁单元、平面杆单元及平面索单元组成的混合非线性单元,利用有限元软件AN-SYS对其进行分析.通过对普通轻钢门式刚架以及两种不同预应力索布置刚架在竖向荷载作用下的静力分析,比较它们在施加不同预应力方案的过程中及在竖向荷载作用下,刚架结构内力和变形的变化规律,为探讨其更为合理有效的构造方案提供参考.

A two-spans portal frame was discussed on its suitable forms and ascertained two schemes.Two pieces same span in two-spans portal frame,as models,were taken finite element method which mixed beam element,bar element and cable element to become nonlinear element to analysis which were adopted of ANSYS finite ele-ment software.They were compared under the different cases and loads to be observed their internal force and deform regularity,so that a more suitable case can be found.