# [1]鲁建,薛素铎,李雄彦,等.索桁张拉结构形状设计及找力分析[J].东南大学学报(自然科学版),2020,50(2):244-250.[doi:10.3969/j.issn.1001-0505.2020.02.006] 　Lu Jian,Xue Suduo,Li Xiongyan,et al.Shape design and finding force analysis on cable-truss tensile structure[J].Journal of Southeast University (Natural Science Edition),2020,50(2):244-250.[doi:10.3969/j.issn.1001-0505.2020.02.006] 点击复制 索桁张拉结构形状设计及找力分析() 分享到： var jiathis_config = { data_track_clickback: true };

50

2020年第2期

244-250

2020-03-20

## 文章信息/Info

Title:
Shape design and finding force analysis on cable-truss tensile structure

1北京工业大学建筑工程学院, 北京 100124; 2烟台大学土木工程学院, 烟台 264000
Author(s):
1College of Civil Engineering, Beijing University of Technology, Beijing 100124, China
2 College of Civil Engineering, Yantai University, Yantai 264000, China

Keywords:

TU394
DOI:
10.3969/j.issn.1001-0505.2020.02.006

Abstract:
To study the shape determination and solve the self-stress modes of cable-truss tensile structures, an improved force iteration method based on reasonable shape was proposed by the finite element software ANSYS. Firstly, a simple formula for shape determination was derived from the rational shape based on the topological relation of the cable-truss tensile structure. Then, an improved force iteration method was proposed to solve the self-stress modes of the cable-truss tensile structures. In the iteration process, the updated cable forces were gradually close to the target values, and the unbalanced displacements of the structure under target pre-stresses were obtained. The results of examples show that the cable-truss frame with reasonable shape is determined by one-time, and the self-stress mode is obtained after about 5 iterations. The largest error between the results of the proposed method and those of the existed method is 0.48%, meeting the engineering requirements. After the self-stress mode obtained from the plain cable-truss frame is put into the spatial cable-truss tensile structure, the calculation results are close, and the largest error of the internal forces is 0.030%. The unbalanced displacements are small, proving the feasibility of the assembly of spatial cable-truss tensile structures by plain cable-truss frames.

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