Issue 40

N. G. Pnevmatikos et alii, Frattura ed Integrità Strutturale, 40 (2017) 129-136; DOI: 10.3221/IGF-ESIS.40.11 134 0 500 1000 1500 2000 2500 3000 3500 4000 0 1 2 3 4 5 6 7 8 Earthquake Force (kN) Stories 500 (kN) 1000 (kN) 1500 (kN) 1850 (kN) 2000 (kN) 2200 (kN) 2700 (kN) 2800 (kN) Earthquake force (kN) Stori s 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 0 1 2 3 4 5 6 7 8 Period (sec) Acceleration (m/sec 2 ) Period (sec) Acceleration (m/sec 2 ) keep the structure within the elastic limit. Design criteria such as inter-story drift which shouldn’t exceed a specific value that causes yielding of the structural members could be used in order to ensure elastic behavior. (a) (b) (c) Figure 3 : The difference between elastic and design forces for each story, (a), the elastic and design spectrum, (solid lines), and the reduced elastic spectrum (dash line) for the structure with control devices, (b). Model and control scheme in Simuling toolbox (c). Earthquake Model Response G Saturation Time delay