Sensitivity assessment of grid-type structures

Steel floor structures, for which the computational model is a grid, are used as load-bearing systems in construction, e.g., in warehouse buildings. The paper presents a linear and non-linear static analysis and a verification of the grid’s sensitivity to the phenomenon of static and dynamic stability loss. The geometry description of the structure was updated at each load increment step in the updated Lagrangian description, and the Newton-Raphson method was used to solve the equilibrium equations, with matrix updating at each load increment step and after each iteration.The paper includes calculations for a grid as a load-bearing steel floor structure for a building intended for storage, category E [6], i.e., storage areas, including the storage of books and other documents.
Linear and non-linear analysis was applied, which provides results closer to the actual state occurring in the structure.
The paper uses an incremental method in which calculations are performed in stages, increasing the load at each stage by a certain increment and finding the corresponding displacement increment. (…)

Sensitivity assessment of grid-type structures – PDF file for download