Question

Which of the following statement is correct for reducing web buckling due to diagonal compression?

(a) not providing web stiffeners to increase shear strength

(b) providing web stiffeners to reduce shear strength

(c) increasing depth-to-thickness ratio

(d) reducing depth-to-thickness ratio

This question was posed to me in homework.

I need to ask this question from Plate Girders & General Considerations in chapter Gantry Girders, Design of Plate Girders & Industrial Buildings of Design of Steel Structures

Answer 1

Right choice is (d) reducing depth-to-thickness ratio

To explain I would say: Diagonal compression causes web to buckle in the direction perpendicular to its action. This problem can be solved by any of the following ways : (i) reduce depth-to-thickness ratio of web such that problem is eliminated, (ii) provide web stiffeners to form panels that would enhance shear strength of web, (iii) provide web stiffeners to form panels that would develop tension field action to resist diagonal compression.