In coastal areas with frequent typhoons, about 60% of roof collapse accidents are directly related to the failure of purlin systems. Z-shaped steel, with its unique cross-sectional design and mechanical properties, has gradually become the "invisible guardian" of wind resistant roof systems.

1. Anti bending revolution of asymmetric cross-sections

Principle of neutral axis offset: The center of gravity of the Z-shaped steel section is biased towards one side, increasing the width of the compressed flange by 20% -30%

2. The mechanical magic of sloping overlap

Continuous force transmission design: Z-shaped steel with 30 ° -45 ° end sloping overlap, extending the load transmission path by more than 50%

3. Structural upgrade of torsional stiffness

Closed end effect: Multiple Z-shaped steels form a spatial truss system through tension bars and braces, increasing torsional stiffness by 3-5 times

4. Intelligent "diversion" of wind load

Diversion design: Z-shaped steel inclined web plate converts some wind pressure into a force parallel to the roof