Effect of Tension Member Installation on Buckling Behavior of Single
Layer Two-way Grid Cylindrical Shell Roof

Author(s): 
Z. H. Zhang, M. Fujimoto, & K. X. Wang

ABSTRACT: Single layer two-way grid shell with in-plane and out-of-plane tension members is a new type of single-layer latticed shell roofs. Compared with traditional single-layer latticed shells, this new type of shell has a unique mesh form and excellent rigidity. This study presents the effect of tension member installation on the buckling load and strength of single layer two-way grid cylindrical shell roof by the numerical methods. The tension members are installed to stiffen the rigidity of the two-way grid shell roof and improve its stability behavior. Tension member placement pattern is focused as both in-plane members of two-way grids and out-of-plane stiffened members in a cylindrical surface. The stability is one of the key factors in the two-way grid shell, and therefore the effects of various geometrical and structural parameters on the behaviors of stability are investigated. It is confirmed that the in-plane and out-of-plane tension members caused the increase in the buckling load and strength of single layer two-way grid shell in the numerical analysis.

Keywords : Single layer two-way grid cylindrical shell roof; Tension members; Out-of-plane placement; Buckling load; Strength.