Article
Engineering, Geological
Ping Liu, Tongjie Ren
Summary: In this study, a region-specific Arias intensity attenuation relationship was developed using the China Strong-Motion Networks Center (CSMNC) database. It was recommended to be applied in the Sichuan-Yunnan region for moment magnitudes ranging between 4.2 and 7.0, distances ranging between 0 and 300 km, and with V-s30 ranging between 128 and 760 m/s. This relationship showed the best performance in fitting and predicting the data from the Sichuan-Yunnan region, although it had greater intra-event, inter-event, and total standard deviations compared to other regions.
BULLETIN OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Chenlin Xiang, Yingbin Zhang, Dongliang Huang, Kyohei Ueda, Haiying Fu, Jing Liu, Lianheng Zhao
Summary: A post investigation shows that near-fault pulse-like ground motions have a significant impact on slope stability under earthquakes. Therefore, an empirical earthquake-induced permanent displacement prediction model was developed based on a displacement database of 318 pulse-like ground motions. The model considers factors such as seismic coefficient, velocity coefficient, yield acceleration, and period ratio, successfully capturing the characteristics of pulse-like ground motions. Compared to existing models, this prediction model shows higher accuracy in considering pulse-like ground motions and can be used for slope stability evaluation and seismic demand analysis in near-fault regions.
ENGINEERING GEOLOGY
(2023)
Article
Geochemistry & Geophysics
Shuang-Lan Wu, Atsushi Nozu, Yosuke Nagasaka
Summary: The study aims to accurately simulate seismic fling-step displacements using the DWN method, with recommendations on the imaginary part of the complex frequency and the subfault size for extended sources.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2021)
Article
Engineering, Civil
Evangelia Garini, George Gazetas
Summary: This paper discusses the uncertainty in selecting ground motions for earthquake-resistant design and the significance of the design linear elastic response spectrum. It points out that while adhering to the design LER spectrum may be suitable for elastic or mildly inelastic systems, it may be less relevant for strongly inelastic systems.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2021)
Article
Remote Sensing
Ankang Ren, Keke Xu, Zhenhua Shao, Xinqi Liu, Xiaoyi Wang
Summary: It is found that colored noise in GNSS time series has significant impact on parameter estimation of general linear trajectory models. To overcome this issue, maximum likelihood estimation is used to estimate the colored noise and a nonlinear least square algorithm with colored noise as the stochastic model is employed to calculate timescale parameters. The method is validated through simulation experiments and has shown significant improvements in reducing iteration times and decreasing parameter estimation deviations compared to traditional methods.
Article
Engineering, Civil
Jing Liu, Yingbin Zhang, Peiyi Xu, Ying Zeng, Chenlin Xiang, Haiying Fu, Haihong Yu, Yunyong He
Summary: In this study, predictive displacement models (PDMs) based on the Newmark sliding block method were created, considering the probability of occurrence of pulse-like ground motions (PLGMs). The results showed that the model with PLGM probability had higher accuracy in non-strike-slip events, while the effect of PLGM probability could be disregarded in strike-slip events. This study provides a basis for earthquake-induced landslide hazard assessment (ELHA), as well as post-earthquake emergency and geological disaster mitigation.
JOURNAL OF EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Satish Bhagat, Anil C. Wijeyewickrema, Naresh Subedi
Summary: The study found that base-isolated buildings experience larger inter-story drift ratios and floor accelerations under near-fault ground motions with fling-step and forward-directivity characteristics. Removing the dominant pulse from the ground motions resulted in different outcomes. Additional analysis using artificial pulses showed that responses were larger for fling-step pulses compared to forward-directivity pulses.
JOURNAL OF EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Jun Zhu, Xiaojun Li, Jianwen Liang, Stavroula Kontoe, Qiumei He, Su Chen
Summary: This study investigates the impact of near-fault pulse-like ground motions on the seismic response of underground tunnels. It is found that these motions can significantly increase the internal forces in the tunnel, especially due to the seismic energy associated with velocity pulses. Among pulse-like ground motions with similar acceleration response spectra, the forward-directivity velocity pulse has a greater detrimental effect on the tunnel compared to the fling-step velocity pulse. Additionally, the amplification effect of near-fault pulse-like ground motions on tunnel internal forces is more pronounced for larger vertical angles of incidence, emphasizing the importance of considering oblique incidence for seismic design.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Chengming Zhang, Mi Zhao, Zilan Zhong, Xiuli Du
Summary: The study aims to explore the optimal seismic intensity measures for subway stations under near-fault seismic excitations and establish seismic fragility curves based on these measures. Results show that for engineering sites of Classes I and II, sustained maximum acceleration followed by peak ground acceleration are the optimum IMs, while for engineering sites of Classes III and IV, velocity spectrum intensity is the optimum measure.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Civil
Hongyu Jia, Sijie Chen, Rui Wu, Deping Guo, Zhi Xu, Shixiong Zheng
Summary: This study conducts an in-depth investigation into the dynamic behavior of an advanced and innovative Hybrid Cable-Supported Bridge System (HCSBS) when subjected to long -duration, pulse-like ground motions and hydrodynamic forces. A 3D Finite Element (FE) model is developed to assess the impact of various pulse-like effects on the response, and two well-established techniques are employed to evaluate the influence of hydrodynamic forces on the complex structure.
Article
Engineering, Civil
Maha Kenawy, David Mccallen, Arben Pitarka
Summary: The ground shaking caused by earthquakes near rupturing faults is highly sensitive to various factors such as rupture characteristics, seismic wave propagation patterns, and site conditions. However, there is a relative lack of field recordings of near-fault shaking, which complicates the assessment of seismic performance of near-fault structures. This study uses three-dimensional high-resolution physics-based earthquake simulations to test the effectiveness of selecting records with strong directivity pulses in representing near-fault ground motion. The study highlights the limitations of classifying near-fault simulated records as pulse or non-pulse and suggests that this binary classification approach is inadequate for characterizing near-fault shaking on soft soils.
EARTHQUAKE SPECTRA
(2023)
Article
Geochemistry & Geophysics
Tae-Kyung Hong, Ilgoo Kim, Seongjun Park, Dongwoo Kil
Summary: The study reveals that the dynamic ground motions induced by the 2011 Tohoku-Oki megathrust earthquake in the Korean Peninsula are mainly composed of elastogravity waves and seismic waves. The large and slow dynamic ground motions of this megathrust earthquake have caused significant peak ground displacements and velocities at far-regional distances, with variations depending on source radiation pattern and continental ray paths.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Engineering, Geological
Shuang-Lan Wu, Atsushi Nozu, Yosuke Nagasaka, Guo-Xing Chen
Summary: The equivalent linear (EL) method, commonly used for seismic ground response analyses, is not directly applicable to calculate displacement response of the ground subject to fling-step displacements. This article introduces the use of complex frequency in the EL method to overcome this limitation and shows its effectiveness in analyzing fling-step displacements. The reasonable agreement between observed and synthetic time histories of acceleration and displacement demonstrates the applicability of the method for response analyses of ground subject to fling-step displacements.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Qingle Cheng, Yuan Tian, Xinzheng Lu, Yuli Huang, Lieping Ye
Summary: This study proposes a near-real-time prediction method for EQILs based on recorded ground motions and the Newmark sliding block method, demonstrating its efficiency and convenience. The method is validated using data from different earthquake events, confirming its accuracy and reliability.
COMPUTERS & GEOSCIENCES
(2021)
Article
Engineering, Multidisciplinary
Wenkai Feng, Zhichun Lu, Xiaoyu Yi, Shan Dong
Summary: The paper introduces a method to predict earthquake-induced slope sliding displacement, combining the Newmark rigid method, coupled method, and decoupled method. Results show that as stiffness increases, the proposed method's critical acceleration and displacements approach those of the Newmark method. In cases of small T-s/T-m values, flexible system analysis results are more conservative, while the rigid block model is more conservative at larger T-s/T-m values.
MATHEMATICAL PROBLEMS IN ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Julie Regnier, Luis-Fabian Bonilla, Pierre-Yves Bard, Etienne Bertrand, Fabrice Hollender, Hiroshi Kawase, Deborah Sicilia, Pedro Arduino, Angelo Amorosi, Domniki Asimaki, Daniela Boldini, Long Chen, Anna Chiaradonna, Florent DeMartin, Marco Ebrille, Ahmed Elgamal, Gaetano Falcone, Evelyne Foerster, Sebastiano Foti, Evangelia Garini, George Gazetas, Celine Gelis, Alborz Ghofrani, Amalia Giannakou, James R. Gingery, Nathalie Glinsky, Joseph Harmon, Youssef Hashash, Susumu Iai, Boris Jeremic, Steve Kramer, Stavroula Kontoe, Jozef Kristek, Giuseppe Lanzo, Annamaria di Lernia, Fernando Lopez-Caballero, Marianne Marot, Graeme McAllister, E. Diego Mercerat, Peter Moczo, Silvana Montoya-Noguera, Michael Musgrove, Alex Nieto-Ferro, Alessandro Pagliaroli, Federico Pisano, Aneta Richterova, Suwal Sajana, Maria Paola Santisi d'Avila, Jian Shi, Francesco Silvestri, Mahdi Taiebat, Giuseppe Tropeano, Luca Verrucci, Kohei Watanabe
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2016)
Article
Engineering, Geological
G. Gazetas, E. Garini, A. Zafeirakos
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2016)
Article
Geochemistry & Geophysics
Julie Regnier, Luis-Fabian Bonilla, Pierre-Yves Bard, Etienne Bertrand, Fabrice Hollender, Hiroshi Kawase, Deborah Sicilia, Pedro Arduino, Angelo Amorosi, Dominiki Asimaki, Daniela Boldini, Long Chen, Anna Chiaradonna, Florent DeMartin, Ahmed Elgamal, Gaetano Falcone, Evelyne Foerster, Sebastiano Foti, Evangelia Garini, George Gazetas, Celine Gelis, Alborz Ghofrani, Amalia Giannakou, James Gingery, Nathalie Glinsky, Joseph Harmon, Youssef Hashash, Susumu Iai, Steve Kramer, Stavroula Kontoe, Jozef Kristek, Giuseppe Lanzo, Annamaria di Lernia, Fernando Lopez-Caballero, Marianne Marot, Graeme McAllister, E. Diego Mercerat, Peter Moczo, Silvana Montoya-Noguera, Michael Musgrove, Alex Nieto-Ferro, Alessandro Pagliaroli, Federico Passeri, Aneta Richterova, Suwal Sajana, Maria Paola Santisi d'Avila, Jian Shi, Francesco Silvestri, Mahdi Taiebat, Giuseppe Tropeano, Didrik Vandeputte, Luca Verrucci
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2018)
Article
Engineering, Geological
Evangelia Garini, George Gazetas, Katerina Ziotopoulou
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2018)
Article
Engineering, Geological
John Douglas, Darius M. Seyedi, Thomas Ulrich, Hormoz Modaressi, Evelyne Foerster, Kyriazis Pitilakis, Dimitris Pitilakis, Anna Karatzetzou, George Gazetas, Evangelia Garini, Marianna Loli
BULLETIN OF EARTHQUAKE ENGINEERING
(2015)
Article
Engineering, Geological
E. Garini, N. Makris, G. Gazetas
BULLETIN OF EARTHQUAKE ENGINEERING
(2015)
Article
Engineering, Civil
George Gazetas, Evangelia Garini, John B. Berrill, Marios Apostolou
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2012)
Article
Engineering, Geological
E. Garini, G. Gazetas, I. Anastasopoulos
Article
Engineering, Geological
George Gazetas, Ioannis Anastasopoulos, Evangelia Garini
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2014)
Article
Engineering, Geological
Evangelia Garini, Ioannis Anastasopoulos, George Gazetas
Editorial Material
Engineering, Geological
Evangelia Garini, Ioannis Anastasopoulos, George Gazetas, Nick O'riordan, Pawan Kumar, Kirk Ellison, Francisco Ciruela-Ochoa
Article
Engineering, Civil
Evangelia Garini, George Gazetas
Summary: This paper discusses the uncertainty in selecting ground motions for earthquake-resistant design and the significance of the design linear elastic response spectrum. It points out that while adhering to the design LER spectrum may be suitable for elastic or mildly inelastic systems, it may be less relevant for strongly inelastic systems.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2021)
Article
Engineering, Civil
Guillermo Diaz-Fanas, Evangelia Garini, Olga-Joan Ktenidou, George Gazetas, Themis Vaxevanis, Yun Jennifer Lan, Jon Heintz, Xin Ma, Evangelia Korre, Rodolfo Valles-Mattox, Andreas Stavridis, Insung Kim, Laura Hernandez-Bassal, Esteban Anzola, Russell Berkowitz, Saif Hussain, Afshar Jalalian, Homero Carrion, Virgilio Dominguez Maldonado, Andres Gama Contreras, Sergio R. Almanza Camacho, Rene F. Bojorquez Hernandez, Victor A. Ruiz Medina, Fernando Vallejo Martinez, Ayse Hortacsu, Ramon Gilsanz, Sissy Nikolaou
EARTHQUAKE SPECTRA
(2020)
Article
Engineering, Civil
E. Garini, G. Gazetas, I. Anastasopoulos
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2017)
