A Study on the Shape Modeling and Structural Stability of an Icosahedron-typed Modular Dome

In this study, a shape design and an analysis considering structural stability were investigated to develop an icosahedron-based hemispherical modular dome. To design this modular dome, a program that can perform icosahedron shape modeling, modularization of joint connection members, and the analysis of structural stability was developed. Furthermore, based on the adopted numerical model, the eigen buckling mode, unstable behavior characteristics according to load vector, and the critical buckling load of the modular dome under uniformly distributed load and concentrated load were analyzed, and the resistance capacities of the structure according to different load vectors were compared. The analysis results for the modular dome suggest that the developed program can perform joint modeling for shape design as well as modular member design, and adequately expressed the nonlinear behaviors of structured according to load conditions. The critical buckling load results also correctly reflected the characteristics of the load conditions. The uniformly distributed load was more advantageous to the structural stability than concentrated load.

[1]  Seungjae Lee,et al.  A Study on Regular Triangular Mesh Modeling of Network Dome using Differential Evolution Algorithm , 2014 .

[2]  Kyu Woong Bae,et al.  An Experimental Evaluation of Structural Performance for the Beam to Column Joints in Unit Modular System , 2013 .

[3]  Ji-Hyeon Kim,et al.  The Practical Application of Modular Construction for Residential Facilities , 2013 .

[4]  Seungjae Lee,et al.  Critical Load and Effective Buckling Length Factor of Dome-typed Space Frame Accordance with Variation of Member Rigidity , 2013 .

[5]  Bong-Ho Cho,et al.  Earthquake Resistance of Modular Building Units Using Load-Bearing Steel Stud Panels , 2013 .

[6]  Sung-Gul Hong,et al.  Behavior of framed modular building system with double skin steel panels , 2011 .

[7]  Su-Deok Shon,et al.  A Study on the Critical Point and Bifurcation According to Load Mode of Dome-Typed Space Frame Structures , 2011 .

[8]  S. Yamada,et al.  Design Estimation Method of Buckling Load and the Associated Mode for a Single Layer Lattice Dome Roof with Square Plan , 2011 .

[9]  I. Puente,et al.  Numerical model and experimental tests on single-layer latticed domes with semi-rigid joints , 2007 .

[10]  K. K. Choong,et al.  A numerical strategy for computing the stability boundaries for multi-loading systems by using generalized inverse and continuation method , 2001 .

[11]  Jan Knippers,et al.  Stability of grid shells , 2001 .

[12]  Ahmed Elsheikh.  Design of space truss structures , 1998 .

[13]  H. Jung.  An Effect of Equipment-Loading on the Buckling Characteristics of Single-Layer Latticed Domes , 1997 .

[14]  Gerard Parke,et al.  Progressive Collapse of Single-Layer Braced Domes , 1996 .

[15]  Shiro Kato,et al.  Effect of joint rigidity on buckling strength of single layer lattice domes. , 1994 .

[16]  K. K. Choong,et al.  Review on methods of bifurcation analysis for geometrically nonlinear structures , 1993 .

[17]  P. G. Bergan,et al.  Solution algorithms for nonlinear structural problems , 1980 .

[18]  K. Huseyin.  The multiple-parameter perturbation technique for the analysis of non-linear systems , 1973 .