Structural characteristics of steel grid: perfect fusion of strength and beauty
2025-06-17
Steel grid is a spatial structural system composed of multiple rods connected by nodes according to a certain rule. Its core characteristics are reflected in three aspects: RISING STEEL STRUCYURE (1) Three-dimensional spatial force
Different from traditional plane structures, the rods of steel grid are interwoven in space to form a stable triangular grid. When the load acts, the entire structure is like a collaborative whole. The rods bear both tension and pressure. The load is evenly distributed to each node through a complex force transmission path, effectively reducing the force of a single component and greatly improving the overall stiffness of the structure. Data shows that under the same span and load conditions, the stiffness of the steel grid is 3-5 times higher than that of the plane truss, but the amount of steel used is reduced by more than 40%, truly realizing the mechanical miracle of "small wins big".
(2) Geometric stability
Triangular structures are widely used in steel grids because triangles have natural stability. No matter how the external load changes, the shape of the triangular grid will not change easily, thus ensuring the stability of the entire grid structure. This characteristic enables the steel grid to maintain good structural performance when subjected to dynamic loads such as wind loads and earthquakes, greatly improving the safety of the building.
(3) Precision node connection
The nodes of the steel grid are the key parts of the structure to transmit force. Common node forms include welded ball nodes and bolted ball nodes. The welded ball node uses hot pressing technology to manufacture hollow steel balls, and the rods and steel balls are firmly connected by welding. The weld strength can reach more than 95% of the parent material. It is suitable for heavy grids with large spans and complex forces; the bolted ball node uses high-strength bolts to connect the rods with forged bolt balls. The installation accuracy can be controlled within ±0.5mm, which is convenient for factory prefabrication and rapid on-site assembly. It is suitable for grid projects with general spans.
