Cold-formed thin-walled steel structure technical specification GB50018-2002

Author: Hubei Provincial Development Planning Commission Editor-in-Chief
Publisher: China Planning Press
Publication Date: 2003-01-01
Features: This specification consists of 11 chapters and 5 appendices. The main revisions include:
1. Added content requiring consideration of design service life when adopting different safety levels, in accordance with the newly revised National Standard "Unified Standard for Reliability Design of Building Structures."
2. Included design principles for considering the load-bearing skin effect in single-story building designs.
3. Supplemented calculation formulas for the stability of single-axis symmetric open-section compression-bending members under bending moment acting in an unsymmetric plane.
4. Modified the calculation of effective width-to-thickness ratios for three different compression panel types, converting them into a calculation unit of panel groups to account for the restraint effects of adjacent panels, using a unified calculation formula.
5. Added content on new connection methods such as self-drilling screws, rivets, shot fasteners, and trumpet-shaped welds.
6. Expanded the widely used corrugated steel plate section by including calculation methods for non-combined effects in floor slabs, as well as for bending and shear load combinations.
7. Added design specifications and construction requirements for thin-walled steel beam walls, which are widely used.
8. Supplemented the calculation formulas for the effective length of columns in multi-span portal frame systems, as well as provisions for vertical deflection limits of frame beams and lateral displacement limits at column tops.