318 Crossing Bracing Systems

Diagonal bracing or X-bracing is commonly used in steel structures to resist horizontal loads. In current practice, the design of these types of bracing system is based on the assumptions that the compression diagonal has negligible capacity and the tension diagonal resists the total load. The assumption that the compression diagonal has a negligible capacity usually results in an overdesign (Picard and Beaulieu 1987, 1988).

Picard and Beaulieu (1987, 1988) reported theoretical and experimental studies on double-diagonal cross bracings (Figure 31.6) and found that

1. A general effective length factor equation (Figure 31.17) is given as

0 0

Post a comment