Hbalken

Hbalken, commonly known as H-beams, are structural steel members with an H-shaped cross-section formed by two parallel flanges joined by a vertical web. The geometry provides a high second moment of area and stiffness, making these sections efficient at resisting bending and shear in building frames, bridges, and heavy industrial structures.

Regional naming and standards vary. In North America, similar sections are often called wide-flange beams (W-shapes), with dimensions specified by depth and flange width. In Europe, the equivalent sections are typically designated HEA, HEB, or HEM and are standardized under EN 10034, featuring different flange widths and heights. A key geometric distinction is that H-beams generally have parallel flanges, whereas I-beams (or I-sections) have tapered flanges.

Common dimensions and properties include depth (d), flange width (b), flange thickness (tf), and web thickness (tw). Weight per unit length and strength properties are specified in regional steel standards, with common materials including structural carbon steels such as S235 or S355 in Europe and A36 or A572 in North America. They are typically produced by hot rolling, then cut, drilled, bolted, or welded for assembly.

Applications include primary framing for buildings, bridges, portals, and industrial structures, where their bending resistance and load distribution are advantageous. Design considerations address buckling of the web, torsional behavior, connections (bolted or welded), and corrosion protection in exposed environments. Hbalken are often used in combination with other beam types and hollow or lattice sections to optimize performance and cost.