Direct Analysis Method for High-Strength Steel Frames Considering Explicit Residual-Stress Models

Chan Siulai; Liu Siwei; Li Tianji; Liu Yaopeng

doi:10.13206/j.gjgS26081745

Volume 41 Issue 10

Oct. 2026

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Chan Siulai, Liu Siwei, Li Tianji, Liu Yaopeng. Direct Analysis Method for High-Strength Steel Frames Considering Explicit Residual-Stress Models[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(10): 45-51. doi: 10.13206/j.gjgS26081745

Citation:

Chan Siulai, Liu Siwei, Li Tianji, Liu Yaopeng. Direct Analysis Method for High-Strength Steel Frames Considering Explicit Residual-Stress Models[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(10): 45-51. doi: 10.13206/j.gjgS26081745

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Direct Analysis Method for High-Strength Steel Frames Considering Explicit Residual-Stress Models

doi: 10.13206/j.gjgS26081745

1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;
2. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China;
3. Shanghai Construction No. 5 (Group) Co., Ltd., Shanghai 200333, China

Received Date: 2026-08-17

Abstract

Abstract

A direct analysis method is proposed for high-strength steel members and frames by explicitly incorporating residual-stress models. The method combines a quasi-Newton cross-sectional analysis procedure with residual-stress distributions for welded box and H-shaped sections. A curved arbitrarily located hinge （ALH） element is adopted to represent initial geometric imperfections， P-Δ and P-δ effects， and nonlinear responses developing along the member length. A plastic fiber hinge model driven by iterative cross-sectional strength surfaces is then used to update the hinge stiffness from initial yielding to ultimate failure. Verification examples involving box sections， welded H-section columns， and a two-story space frame show that， with residual stresses and initial geometric imperfections explicitly considered， the calculated yield surfaces， ultimate bearing capacities， and load-displacement curves agree well with existing experimental or finite-element results. The proposed procedure provides an effective numerical tool for stability design of high-strength steel structures.
- high-strength steel frame,
- direct analysis method,
- residual stress,
- arbitrarily located hinge element,
- plastic fiber hinge

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References(20)

References

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