Influence of geometrical and structural parameters on the behaviour of squared plan-form single-layer structures

Although there is a great deal of papers on single-layer latticed structures, practically the totality of them is devoted to domes. Therefore, the authors have chosen to analyse squared plan-form single-layer structures studying the influence of joint-rigidity, mesh-density, rise-to-span ratio and load combination in their behaviour, through a Design of Experiments analysis. After identifying the most influential parameters, more FEM analyses were run resulting in interesting conclusions which included economic considerations. The influence of initial imperfections was also investigated.

► In order to find the optimum single-layer space structure we carried out a Design of Experiments.
► The study was applied to space structures of square plan-form.
► A key point in the analyses was the study of the influence of joint stiffness.