In the present paper, analytic discussions on the out-of-plane instability of paunch bars of beam/truss-string structures are put forward with seven basic models simplified. This is useful for a preliminary recognition of the importance of constituting a stable lower cable-bar system. Manual calculation of shape determination of lower nodes of vertical paunch bars is proposed. It is assumed that all paunch bars are vertical or perpendicular to the line connected two ends of the upper beam/truss. Hopefully the work presented in this paper could benefit the further research work and practical engineering on beam/truss-string structures.
Zhi-hongZhang.Theoretical research on large-span tension structures composed of cables, bars and beams. Ph. D. thesis, Zhejiang University, 2003, 5.
2.
Zhang ZhihongDong Shilin.Determination of initial prestress distribution of hybrid system composed of cables, bars and beams. Spatial structures, 9(3): 13–18.
ZhihongZHANGShilinDONGYukioTamura.Force finding analysis of hybrid space structures. Int. Journal, Space Structures, 2005, 20(2): 107–113.
5.
QilinZhang.Cable and membrane structures.Shanghai, Tongji University Press,2002.
6.
ZhengxianBai.Theoretical analysis and experimental research on Beam-String Structures. Ph. D. thesis of Tianjin university, 1998.
7.
Du XueyingXu Zhonggen. Study on the method of dynamic stability judgement criteria. Journal of Guangzhou university, 2005, 4(3): 267–271.
8.
Zheng HongzhiTong LeweiChen Yiyi, etc. Behavior of cast steel joints in roof trusses for exhibitions and sports center of Harbin. Industrial construction, 2005, 35(11): 35–38.
9.
JunYang.Research on reliability of spatial beam-string structure based on response surface method. Master thesis, Southeast university, 2006.
10.
Ye Ji-hongZhao Xianbo.Form finding of the beam (truss) string structures stretched at both ends using the method of offloading by steps. Engineering mechanics, 2006, 23(9): 131–140.
11.
ZhiheZHONGWenboSUNGuixiangW E IAn Approximate Analysis of Calculating Length Coefficient of Strut in One-way Beam- string- structure[J]. Journal of Huaihai institute of technology, 2003, 12(4): 67–69.
12.
RongyiCHENShilinDONGDesign of exhibition hall steel roof at Guangzhou international convention & exhibition center. Spatial structure, 2002, 8(3): 29–34.
13.
Shang RenjieLiu JingliangWu ZhuanqinLi PeixunPossion equation and form-finding of bi-directional string structures. Mechanics and practice, 2007, 29(5): 17–20.
14.
Shang RenjieWu ZhuanqinLi PeixunLiu JingliangThe form-finding method based on balanced load of the down string-net of bi-directional beam-string structure. Engineering mechanics, 2008, 25(3):174–181.
15.
Zhi-hong ZhangShi-lin Dong.Shape determination problem of spatial cable-frame type of suspended single-layer reticulated shells with free surface, Int. J. Space Structures, 2010, 25(1):45–56.
