Static Behavior Analysis of Hinged Six-Bar Tetrahedral Spherical Lattice Shell

In order to simplify joint form of semi rigid and semi hinged six-bar tetrahedral spherical lattice shell, this paper presents two new types of hinged six-bar tetrahedral spherical lattice shell with a circular ring projection surface. The new shell configuration was simple because of comparatively fewer members and high evacuation ratio than double-layer spherical lattice shell structure. Six-bar tetrahedral spherical lattice shell has advantages of both single-layer and double-layer spherical lattice shell structure. Static and linear and nonlinear stability analyses of shell with two new types of hinged six-bar tetrahedral spherical lattice shell were carried out. Through the linear eigenvalue buckling analysis, stability analysis considering load asymmetry distribution and geometrical initial defects, the results show that the six-barred tetrahedral spherical reticulated shell structure with the lower chord support of the upper chord arranged along the span direction and the upper chord support of the lower chord arranged along the span direction are good in integral rigidity, mechanical property, stability. The hinged six-bar tetrahedral spherical lattice shell with bolted spherical joints is beneficial to standardized design, industrial production and assembly construction, which meets the characteristics of green architecture industry.