预应力索-桁架结构节点位移控制技术研究

Influence of the Section of Rod on Nodal Displacement of Prestress-cable Truss Structure

对于预应力索-桁架结构,研究预应力索力值的大小和构件截面尺寸对结构节点位移的影响.首先施加适当预应力,使得结构某些节点位移为零.然后,计算构件截面尺寸对节点位移的灵敏度,通过改变截面尺寸,调整较大节点位移,依次循环往复,以实现结构主要节点位移趋于零的理想状态.

In this paper, the influence of prestress-cable force value and section of component on the joint displacement of prestress-cable truss structure is studied. In order to make displacement of the main node tends to zero,appropriate prestress is applied firstly, so that the displacements of some nodes of the structure arc zero. Then the sensitivity of section size to nodal displacement is c,Llculated and the larger displacement is adjust by changing the section size. The above process is repeated to achieve the ideal state.