Consider the following two statements regarding Bearing stiffeners provided at the location of a concentrated load: 1. Bearing stiffeners have to resist bearing and buckling loads. 2. Bearing area and the area resisting buckling load are the same. Which of the above statements is/are correct ?
Consider the following two statements regarding Bearing stiffeners provided at the location of a concentrated load: 1. Bearing stiffeners have to resist bearing and buckling loads. 2. Bearing area and the area resisting buckling load are the same. Which of the above statements is/are correct ? Correct Answer 1 only
Bearing stiffeners are provided at supports and at all locations where concentrated load is acting. They are provided to prevent the web crippling at supports, where bearing occurs and location of concentrated loads, where buckling occurs.
Bearing area is calculated at root of web by dispersion at a slope of 1:2.5 and buckling area is calculated at neutral axis by dispersion at 450. Hence, both are different. (Refer the following figure).
Bearing area = (x’ tω)
x = a + 2 × (h’ + tf)
Buckling area = (x + tω)
Clearly x’ ≠ x ⇒ Bearing area ≠ Buckling area.