Ground Motions and Structures - Earthquake Engineering for Structural Design - page 318

318 Earthquake Engineering for Structural Design

Figure 8.20 Influence of the interaction between structure and non-structural elements
(Truta et al, 2003)

system failure corresponds to the failure of all active components (Bertero and
Bertero, 1999). It is important to distinguish between the structure behavior under
static (or pseudo-static) lateral forces and dynamic lateral forces.
According to the static approach, the formation of the global collapse mechanism is
presented in Figure 8.21, which is directly related to the degree of indeterminacy,
which is defined as the number of plastic hinges formed at the member ends, up to the
point of total collapse (Husain and Tsopelas, 2004). This collapse mechanism