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›› 2015, Vol. 37 ›› Issue (2): 197-204.doi: 10.6052/1000-0879-14-164

• 应用研究 • 上一篇    下一篇

葵花型索穹顶结构等效平面桁架静力计算方法

尚仁杰   

  1. 中冶建筑研究总院有限公司, 北京 100088
  • 收稿日期:2014-06-03 修回日期:2014-07-21 出版日期:2015-04-15 发布日期:2015-04-13
  • 通讯作者: 尚仁杰,博士,教授级高工. E-mail:shangrenjieg@aliyun.com E-mail:shangrenjieg@aliyun.com

THE EQUIVALENT PLANE TRUSS STATIC CALCULATION FOR LEVY DOMES

SHANG Renjie   

  1. Central Research Institute of Building and Construction Co. Ltd, MCC Group, Beijing 100088,China
  • Received:2014-06-03 Revised:2014-07-21 Online:2015-04-15 Published:2015-04-13

摘要: 选取n次轴对称葵花型索穹顶结构的1/n,将空间轴对称结构等效为一次超静定平面桁架结构.给出了葵花型索穹顶结构撑杆不在同一径向上的内力和位移处理方法,推导了力法求解约束力的计算公式,提出了小变形时各点位移计算的位移传递矩阵和计算公式.最后,通过一个算例介绍了该方法的计算过程并与有限元计算结果进行了比较,内力和位移误差均在工程设计要求内,验证了方法的正确性和准确性.

关键词: 索穹顶|葵花型索穹顶|初始预应力|等效平面桁架|位移传递矩阵

Abstract: A 1/n part of the n-fold axisymmetrical Levy dome is equivalent to a statically indeterminate truss with one redundant degree. The methods to obtain the forces and the displacements of the struts in different radial directions are put forward, as well as the equations to calculate the constraint force. The displacement transfer matrix and the equation are derived. An example is given and the results are compared with those obtained by the FEM.

Key words: cable dome|Levy dome|initial prestress|equivalent plane truss|displacement transfer matrix

中图分类号: 

  • TU394