摘要
本文研究的是一种新型张拉穹顶结构的承载力性能。通过后张拉闭合单弦杆平板网架中的预留缝隙,单弦杆平板网架可以张拉变形为具有很好外观形式的空间穹顶结构。成形后的单弦杆穹顶具有很好的整体刚度和承载力,可以充分发挥拱壳作用,平面外腹杆的使用延缓了穹顶整体失稳的发生,使其受力性能介于普通单层、双层穹顶网壳结构之间。
The ultimate load-bearing capacity of a new dome formed by means of post-tensioning is studied in the paper. The dome is transformed from a single-chorded plane space truss by tensioning the wire which lies in the bottom chord and has a unique shape. With the arc and shell action the new dome has a high global rigidity and load bearing capacity. The setting of the out-of-plan web members prevents an overall instabilify to develop. The behavior of the new dome is between that of single-layer dome and two-layer dome.
出处
《空间结构》
CSCD
2003年第3期28-32,27,共6页
Spatial Structures
基金
陕西省自然科学研究计划项目(99C05)
陕西省教育厅自然科学专题课题(00JK243)
教育部归国留学人员启动基金[1999]363号)
关键词
单弦杆平板网架
后张拉
穹顶
极限承载力
空间穹顶结构
single-chorded plane space truss
post-tensioning
dome
ultimate load-bearing capacity