Concept
Seismic hazard
Related publications (289)
Fault roughness controls injection-induced seismicity
Surface roughness ubiquitously prevails in natural faults across various length scales. Despite extensive studies highlighting the important role of fault geometry in the dynamics of tectonic earthquakes, whether and how fault roughness affects fluid-induc ...
Washington2024A Softening Constitutive Law and Gradient-Inelastic Fiber-Based Element for 3-Dimensional Frame Simulations Under Seismic Excitations
Steel frame structures are essential components of modern infrastructure. Understanding their behavior under seismic loading is critical for ensuring public safety and minimizing damage that occurs during earthquakes. To accurately predict the response of ...
EPFL2024Extraction of fluids to mitigate the seismic risk associated with post-injection aseismic slip
Subsurface fluid injections are commonly accompanied by seismicity which can sometimes result in earthquakes of relatively large magnitude that pose a serious hazard for the geo-energy industry. Current efforts to manage the seismic risk associated with fl ...
2023Geotechnical Engineering in the Digital and Technological Innovation Era
The book collects the keynote contributions and the papers presented at the “8th Italian Conference of Researchers in Geotechnical Engineering 2023, CNRIG’23”. The conference was held on July 5–7, 2023, at the University of Palermo (Italy), and it was orga ...
Springer Cham2023Hysteretic behaviour of welded connections with highly inelastic panel zones
Dimitrios Lignos, Andronikos Skiadopoulos
The current practice in capacity-designed steel moment resisting frames (MRFs) worldwide allows for limitedshear yielding in the column web panel zone. As such, inelastic deformations concentrate near the beam ends, thereby leading to flexural stre ...
Ernst & Sohn2023Full-Scale Experiments of Cyclically Loaded Welded Moment Connections with Highly Dissipative Panel Zones and Simplified Weld Details
Dimitrios Lignos, Andronikos Skiadopoulos
This paper presents the experimental results of two welded unreinforced flange-welded web (WUF-W) beam-to-column connections that defy the current design paradigm of prequalified welded connections. The proposed WUF-W connections feature customized beveled ...
2023Single-Well Pore Pressure Preconditioning for Enhanced Geothermal System Stimulation
Marie Estelle Solange Violay, Mathias Alexandre David Lebihain, Barnaby Padraig Fryer
The stress state is an important parameter in terms of both earthquake nucleation and rupture. Here, a new stimulation technique is proposed for Enhanced Geothermal Systems (EGSs), which have previously been burdened with a number of high-profile incidence ...
AMER GEOPHYSICAL UNION2023Proposed Panel Zone Model for Beam-To-Column Joints in Steel Moment Resisting Frames
Dimitrios Lignos, Andronikos Skiadopoulos, Ahmed Mohamed Ahmed Elkady
In capacity designed steel moment resisting frames (MRFs), beam-to-column joints (i.e., panel zones) are designed to remain elastic. To potentially exploit the beneficial aspects of the stable panel zone hysteretic response in shear, a robust panel zone mo ...
2023Equivalent Frame Models for FRP-Strengthened Masonry Buildings
Fibre-reinforced polymers (FRP) strengthening can be applied to decrease the seismic vulnerability of existing masonry buildings, both with regard to in-plane and out-of-plane failure mechanisms. Experimentally, the impact of strengthening solutions has be ...
Proceedings of the 2nd Croatian Conference on Earthquake Eng2023Full Scale Experiments of a Composite Steel Moment Resisting Frame: Behavioral Insights and Implications on Seismic Design
Dimitrios Lignos, Hammad El Jisr
This paper discusses the cyclic performance of a heavily instrumented 2-bay full-scale composite-steel moment resisting frame (CMRF) sub-system from the onset of structural damage up until incipient collapse. The CMRF featured stiffened end plate bolted co ...
EEME2023