Near‐source ground motion in the M7.8 Gaziantep (Turkey) earthquake

Baltzopoulos, Georgios; Baraschino, Roberto; Chioccarelli, Eugenio; Cito, Pasquale; Vitale, Antonio; Iervolino, Iunio

doi:10.1002/eqe.3939

Cited by 24 publications

(6 citation statements)

References 31 publications

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“…In addition, to assess the validity of the simulation method proposed in this study, a specific instance of falling debris during the 2023 Turkey earthquake 26,27 is chosen for the validation case. The accuracy of this method is validated by comparing the actual distribution of the falling debris with the simulated distribution.…”

Section: Frameworkmentioning

confidence: 99%

An integrated simulation method for large‐scale earthquake‐induced falling debris in building groups

Xu,

Zhu,

et al. 2024

Earthq Engng Struct Dyn

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When building groups are subjected to earthquakes, the potential hazard of exterior falling debris poses a significant risk of causing severe injuries and fatalities. In this study, an integrated simulation method of the large‐scale earthquake‐induced exterior falling debris for building groups is proposed, which includes modeling, calculation, and visualization. Firstly, a modeling algorithm is established for falling debris models of building groups. This algorithm employs the Octree algorithm to support the transformation of the three‐dimensional (3D) building surface model into falling debris models. Subsequently, the generated falling debris models are aggregated using a density clustering algorithm, and their motion is efficiently calculated based on the physics engine and time history analysis. Finally, a cooperative visualization algorithm is developed to effectively present a 3D scene that incorporates both structural displacement and the motion of falling debris in building groups. The actual distribution of exterior falling debris during the earthquake in Turkey validates the proposed simulation method, which is then integrally applied to the Beijing central business district. This integrated simulation method has the capability to provide a large‐scale 3D scene of falling debris for the virtual safety drills of earthquake evacuation and rescue within urban building groups.

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Section: Frameworkmentioning

confidence: 99%

An integrated simulation method for large‐scale earthquake‐induced falling debris in building groups

Xu,

Zhu,

et al. 2024

Earthq Engng Struct Dyn

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“…Among the most studied cases of subsequent hazards of the same nature are the mainshock -aftershock or multiple mainshock earthquake events. Recently, the catastrophic 2023 Turkey-Syria sequence that included an M 7.8 and an M 7.5 earthquake with a time gap of 9 hours has reportedly caused more than 40,000 fatalities and an estimated direct damage cost of US$ 34.2 billion only in the affected regions of Turkey [17], [18]. Regarding bridges, [19] were among the first researchers that attempted to investigate this multi-hazard scenario systematically, aiming to propose a decision-making criterion of whether a bridge should remain fully operational or not after a mainshock event.…”

Section: Original Article Abstractmentioning

confidence: 99%

Multiple hazard assessment of bridges considering interdependencies

Stefanidou,

Markogiannaki,

Mikes

et al. 2023

ce papers

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Bridges are in direct interaction with the environment and thus are exposed to various natural hazards such as earthquakes and floods, that may result in severe damage and substantial direct and indirect losses. The multiple hazard events may be subsequent single events (e.g., a flood event followed by an earthquake) or combined multi‐hazard events (e.g., cascading ground failure event after an earthquake). The effect of multiple hazards on bridge fragility is related to the damage level of the bridge components and the associated failure mechanisms that may compromise the roadway network functionality. The scope of this work is to propose an approach for the multiple‐hazard assessment of bridges considering subsequent events and different damage scenarios of critical bridge components, i.e. piers, bearings and abutments. Therefore, the effect of the damage level of critical bridge components and their interdependence on the fragility assessment for subsequent hazard events is investigated. Different damage scenarios and hazard sequences are studied, providing insight into the damage mechanisms and the accumulation of damage. The approach is applied to the multiple hazard assessment of a case study typical riverine bridge in Greece and the results are comparatively discussed.

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“…Peak ground accelerations measured approached 2g, while vertical acceleration was around 1.4g. Many engineers have already analyzed the characteristics of the vibration, which are judged in terms of seismic engineering, and examined whether there are peculiarities [11][12][13].…”

Section: Strong Ground Motionmentioning

confidence: 99%

Optimization of Tuned Mass Damper for Enhancing Seismic Performance of a RC Building During the 2023 Earthquake in Turkey

Hamaty,

Titirla,

Larbi

2023

Advances in Transdisciplinary Engineering

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On 6th February 2023, a strong earthquake of magnitude Mw7.8 struck the central and southern parts of Turkey and the northern and western parts of Syria. The epicentre of the earthquake was located approximately 35 km west–northwest of the town Gaziantep, followed by more than 570 strong aftershocks. A strong aftershock measuring Mw 6.7 occurred about 11 minutes after the main shock, while the stronger one (Mw 7.5) around 9 hours later, with an epicenter 95 km to the northeast of the first earthquake. Recorded peak ground accelerations reached 2g, while the vertical acceleration was approximately equal to 1.4g. There was widespread damage with collapsed buildings and countless life loss (humans and animals). The aim of the present paper is to study the response of a nine-story reinforced concrete building (RC), during this seismic sequence. The benchmark building was redesigned with the optimal design of a tuned mass damper (TMD) at the roof of the building. The comparison of the results shows the TMD’s effectiveness in minimizing 50% of the max-story drift, as well as the horizontal displacement in both directions of the building. In addition, the use of the TMD protects the structure from collapse.

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Near‐source ground motion in the M7.8 Gaziantep (Turkey) earthquake

Cited by 24 publications

References 31 publications

An integrated simulation method for large‐scale earthquake‐induced falling debris in building groups

An integrated simulation method for large‐scale earthquake‐induced falling debris in building groups

Multiple hazard assessment of bridges considering interdependencies

Optimization of Tuned Mass Damper for Enhancing Seismic Performance of a RC Building During the 2023 Earthquake in Turkey

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