Seismic Fragility Curves and Damage Probabilities of Concrete Gravity Dam Under Near–Far Faults Ground Motions

Performances evaluation of a hydraulic structure using the reliability methods

“…These parameters are reported in table 2 which shows the six modeling parameters considered in this study and their associated probability density functions. Seismic hazard in terms of spectral acceleration has been estimated based on the previous studies related to the site of northern Algeria [1,5,8,15]. The main parameters considered for the choice of these recordings are magnitude, epicentral distance, peak ground acceleration (PGA) and peak ground velocity (PGV).…”

“…Each limit state is associated to several damage levels. The levels of considered damage are defined and reported from the data presented in [15]. It can be shown in table 3.…”

“…Moreover, damages provoked under these risks to this structure, especially to the dams, can increase the extent of the potentially catastrophic consequences in terms environmental, economic and of human lives losses [1,5]. In this context, several approaches can be used; one uses either the deterministic approach, or the semi-probabilistic approach or then the probabilistic approach [14][15][16][17][18][19]. The probabilistic approach gathers three categories of methods which are the methods of analysis to determine the statistical characteristics of the mechanical answer (density of probability), the methods of sensitivity analysis and the reliability methods based on the evaluation of the failure probability with respect to a given scenario.…”

Influence of fault forms on the evolution of concrete damage patterns in tunnels

“…Three large magnitude earthquakes, namely, those in the Kocaeli, Imperial valley, and Chi-Chi zones (Archuleta, 1984;Ma et al, 1999;Yagi and Kikuchi, 2000;Kelson et al, 2001;Russo et al, 2002), have shown that fault rupture can cause serious damage to the structures, especially tunnels embedded within faults. Interaction of surface faults with surface structures (such as bridges, dams, and buildings) or underground structures (such as tunnels and pipelines) may cause significant damage to them (Ismail and Casas, 2016;Hebbouche et al, 2020;Yp et al, 2020). In recent investigations of tunnel damage cases after strong earthquakes, it has been found that permanent ground deformation from fault dislocations can lead to cracking and even collapse of tunnel linings (Chen et al, 2012;Ma et al, 2019;Ma et al, 2021).…”