A new ground motion intensity measure for short period reinforced concrete structures subjected to near-fault pulse-like ground motions

Durucan, Caner; Şahin, Hümeyra; Durucan, Ayşe Ruşen

doi:10.1080/15397734.2021.1886114

Cited by 5 publications

(1 citation statement)

References 28 publications

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“…They can be divided into two types: rupture directivity pulse ground motions and fling-step pulse ground motions. Short duration and large energy input structure are the main characteristics of pulsed ground motions (Durucan et al 2021). The directional pulse ground motion contains obvious two-way velocity pulses and a larger pulse period (Fig.…”

Section: Near-fault Ground Motion Characteristics and Selection Methodsmentioning

confidence: 99%

Evolution law of overall damage of concrete gravity dam under near-fault ground motion

Zhai¹,

Zhang²,

Zhang³

et al. 2021

Preprint

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Strong earthquake cases of concrete gravity dams show that the foundation damage has an important influence on the seismic response and damage characteristics of the dam body. Compared with non-pulse ground motions, pulse-like near-fault ground motions have a wider response spectrum sensitive zone, which will cause more modes of the structure to respond, resulting in more serious damage to the structure. In order to study the real dynamic damage characteristics of concrete gravity dams under the action of near-fault ground motions, this paper takes Koyna gravity dam as the object and establishes a multi-coupling simulation model that can reasonably reflect the dynamic damage evolution process of dam concrete and foundation rock mass. A total of 12 near-fault ground motion records with three types of rupture directivity pulse, fling-step pulse and non-pulse are selected, deep research on the overall damage evolution law of concrete gravity dams. Considering the additional influence of different earthquake mechanisms, different site types and other factors on the study, the selected ground motion records are from the same seismic events (Chi-Chi), the same direction but different stations. The results show that the foundation of the concretes gravity dam often get damaged before the dam body under the action of strong earthquakes. Compared with the near-fault non-pulse ground motion, the structural damage of the gravity dam under the action of the near-fault directivity pulse ground motion is significantly increased, and causes greater damage and displacement response to the dam body. The near-fault fling-step pulse ground motion has the least impact on the dynamic response of the gravity dam structure.

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Section: Near-fault Ground Motion Characteristics and Selection Methodsmentioning

confidence: 99%

Evolution law of overall damage of concrete gravity dam under near-fault ground motion

Zhai¹,

Zhang²,

Zhang³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Investigating the efficiency of machine learning algorithms in classifying pulse-like ground motions

Wani,

Vemuri,

Rajaram

et al. 2023

J Seismol

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Evolution criteria of overall damage of concrete gravity dam body and foundation under near-fault ground motion

et al. 2022

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A new ground motion intensity measure for short period reinforced concrete structures subjected to near-fault pulse-like ground motions

Cited by 5 publications

References 28 publications

Evolution law of overall damage of concrete gravity dam under near-fault ground motion

Evolution law of overall damage of concrete gravity dam under near-fault ground motion

Investigating the efficiency of machine learning algorithms in classifying pulse-like ground motions

Evolution criteria of overall damage of concrete gravity dam body and foundation under near-fault ground motion

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