Evaluasi Numerik Kapasitas Geser Profil Baja Sayap Lebar: Konsiderasi Ragam Kegagalan dan Pengaruh Kelengkungan Pelat Badan

Helmy Hermawan Tjahjanto; Giovanny Juvent Feliciana; Wivia Octarena Nugroho

doi:10.5614/jts.2026.33.1.4

Authors

Helmy Hermawan Tjahjanto Program Studi Teknik Sipil, Fakultas Teknik, Universitas Katolik Parahyangan
Giovanny Juvent Feliciana Program Studi Teknik Sipil, Fakultas Teknik, Universitas Katolik Parahyangan
Wivia Octarena Nugroho Program Studi Teknik Sipil, Fakultas Teknik, Universitas Katolik Parahyangan

DOI:

https://doi.org/10.5614/jts.2026.33.1.4

Keywords:

Numerical analysis, shear buckling, shear capacity, web curvature, wide-flage section

Abstract

Abstract

Shear capacity of wide-flange steel beams with low height-to-thickness web ratio, is calculated assuming the shear capacity is unaffected by web buckling and section imperfections. Previous studies show that web curvature within tolerance limits, can significantly reduce the beam's shear capacity. In this study, the failure modes and the impact of web curvature on shear behavior are evaluated numerically using ABAQUS software. Various wide-flange sections, with nominal shear capacity determined by the web shear yielding, are modelled and analyzed. Each section is analyzed in perfect condition and with web curvature at maximum deviation at the tolerance limits of JIS 3192:2008. The results show web buckling determines the shear capacity of several beams with perfect sections by up to 4,3% of the nominal capacities. The impact of web curvature on shear behavior shifts the failure mode from yielding to web buckling and reduces the shear capacity up to 14,6% compared to the shear capacity of the perfect section. Recommendation for shear design parameters based on the numerical evaluation include a post-buckling shear strength reduction factor, C_v1, of 0,95 and a shear resistance factor, ?_v, of 0,90, with maximum imperfection limit of web curvature to be taken as d/150 or t_w/4.

Keywords : Numerical analysis, shear buckling, shear capacity, web curvature, wide-flage section.

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