Abstract
This study analyzes the shear behaviour of I profile linearly tapered plate girder and obtains a proposed method to estimate its shear strength. This study contains 72 models of linearly tapered plate girder with angle of inclination range from 2° up to 30°, web thickness: 5 mm up to 8 mm and ratio of a/h: 1, 1.25 dan 1.5. All models have slender web. This study was performed through analysis by finite element method using ADINA 9.5 software. All models are simply supported and applied two shear load variations, which cause diagonal tension field action at short diagonal direction (Type I) and long diagonal direction (Type II), respectively. For type I, its shear strength can be determined using the equation of shear strength according to AISC 360-16 design specification using smallest web depth. While for type II, the analysis results shown that its shear strength reduce with the increase of its inclination angle and ratio of . According to that results, a modification factor for determining the shear strength of linearly tapered plate girder which respects to AISC 360-16 design specification has been obtained.
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