Example 314

Given: A braced column is shown in Figure 31.12. Consider axial force effects to determine K-factors for columns AB and BC.

Solution

1. Sketch buckled shape as shown in Figure 31.12b.

3. Calculate KBC by Equation 31.82:

Axial forces

Cases

Exact y formula

Approximate y formula

m

t Mb = 0

0 0

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