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沈祖炎,张立新.基于非线性有限元的索穹顶施工模拟分析[J].计算力学学报,2002,19(4):466~471
基于非线性有限元的索穹顶施工模拟分析
Simulation of erection procedures of cable domes based on nonlinear FEM
  修订日期:2000-12-29
DOI:10.7511/jslx20024098
中文关键词:  索穹顶,施工模拟,非线性有限元,初始位移设定
英文关键词:cable domes,simulation of erection procedures,nonlinear FEM,initial displacement assumption
基金项目:
沈祖炎  张立新
同济大学土木工程防灾国家实验室 上海200092 (沈祖炎)
,同济大学土木工程防灾国家实验室 上海200092(张立新)
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中文摘要:
      索穹顶结构的成形和施工模拟分析是该体系的基础问题。由于包含着刚体位移的分析使得跟踪难度相当大。本文采用了基于非线性有限元的施工过程分析 ,适应性强、分析精度高 ,避免了刚体位移假定。从而使得索穹顶体系的成形过程、受荷状态的全过程分析方法获得了统一。通过与试验模型对比分析表明本文方法操作简单且分析精度较高 ,分析的结果能够很好地指导施工
英文摘要:
      Simulation of the erection procedures of the cable domes is one of the key engineering problems. The rigid body displacement, which should be allowed, makes the analysis more complex. In this paper, anovel method, based on nonlinear FEM, is applied and the rigid body displacement analysis is avoided. Therefore the analysis for whole procedures of the cable domes is unified. The initial displacement assumption method is also put forward to reduce the number of iterations. Furthermore, the method can be extended for various cable\|strut tensile structures and the result given can direct the construction on site.
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