Article
Engineering, Geological
Xianzheng Zhang, Chenxiao Tang, Ning Li, Jiang Xiong, Ming Chen, Mingwei Li, Chuan Tang
Summary: It is recognized that post-seismic mass movements usually occur in the first few years after an earthquake. However, a major debris flow occurred in Wenchuan County in 2019, 11 years after the 2008 Wenchuan earthquake, indicating a different temporal evolution pattern. The investigation results show that active landslides mainly occurred in high-elevation areas without vegetation cover, and the debris flows were mainly initiated by run-off erosion of debris in steep channels. Additionally, more debris flows occurred in the northern part of the study area, where the relative annual rainfall and coseismic landslide density were low.
Article
Engineering, Geological
Abduelhakim Zeybek, Gopal Santana Phani Madabhushi
Summary: The soil parameters related to the reconsolidation of liquefied sand vary as a function of effective stress or excess pore pressure ratio. This study presents several empirical relationships obtained from geotechnical centrifuge experiments to estimate these parameters. A simplified method utilizing the estimated parameters as input can reasonably reproduce the time histories of excess pore pressure dissipation and ground surface settlement.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Geosciences, Multidisciplinary
Pengyu Chen
Summary: This study analyzed the post-earthquake economic recovery in the most severely affected areas of the 2008 Wenchuan earthquake. A new analysis method was proposed and compared with the synthetic control method and the gray prediction model. The recovery path and influencing factors were also analyzed. The findings showed variations in economic recovery among regions and similarities between the proposed method and the synthetic control method. The study highlights the importance of analyzing the recovery process and time for post-earthquake economies.
Article
Engineering, Geological
M. Rouholamin, D. Lombardi, S. Bhattacharya
Summary: This paper investigates the behavior of pile-supported structures in liquefiable soils, specifically focusing on the transition from no-liquefaction to full-liquefaction. Shaking table tests were conducted on four pile-supported structures, which were subjected to different input motions and reached full-liquefaction at different times. The experimental results showed that the maximum bending moment can occur during the transient phase, and this amplification in bending moment can be attributed to the resonance effect between the input motion frequency and the decreasing frequency of the pile supported structure during the liquefaction process. A non-dimensional framework and a new parameter TAF (Transient Amplification Factor) were introduced to predict the design bending moment during the transient phase. It was found that TAF can be determined based on easily obtainable parameters such as the time taken to reach full liquefaction and the elongation of natural period of vibration.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Luca Paolella, Giuseppe Modoni, Rose Line Spacagna, Anna Baris
Summary: This study extends the classical one-dimensional liquefaction severity indexes to improve predictive capability for lateral spreading, demonstrating efficacy through two earthquake case studies. The new index combines stratigraphic attributes and topographic information for analysis, with validation against post-earthquake damage surveys highlighting the importance of bi-dimensional conditions.
Article
Ecology
Ming Chen, Chuan Tang, Xiaodi Wang, Jiang Xiong, Qingyun Shi, Xianzheng Zhang, Mingwei Li, Yuting Luo, Yu Tie, Qiang Feng
Summary: This study investigated the temporal and spatial differentiation of surface recovery at post-seismic landslides in three typical regions along the fault generated by the Wenchuan earthquake. The results showed that geological factors and climate significantly influenced the surface recovery rates at post-seismic landslides, with NDVI values in different areas returning to pre-earthquake levels within 11 to 16 years after the earthquake.
ECOLOGICAL INFORMATICS
(2021)
Review
Construction & Building Technology
Qiushan Li, Kabilijiang Wumaier, Koide Osamu
Summary: Housing reconstruction in rural areas after disasters requires strategies that are different from those used in urban areas. Participatory institutional design, classified housing reconstruction system, and land circulation market can contribute to successful rural housing reconstruction.
Article
Engineering, Geological
Jinyuan Yuan, Yunlong Wang, Beilei Zhan, Xiaoming Yuan, Xiaoyang Wu, Jiajun Ma
Summary: This study investigates and analyzes a rare large-scale liquefaction event that occurred at a high altitude on the Tibetan Plateau in 2021, contributing to the improvement of our understanding of liquefaction caused by earthquakes and the development of techniques for reducing liquefaction hazards.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Geochemistry & Geophysics
Athanassios Ganas, Panagiotis Elias, Pierre Briole, Sotiris Valkaniotis, Javier Escartin, Varvara Tsironi, Ilektra Karasante, Chrysanthi Kosma
Summary: On October 30, 2020, a magnitude 7.0 earthquake occurred north of the island of Samos, Greece, activating a normal fault offshore the island. The earthquake caused permanent uplift of the island and subsidence in coastal areas, as well as liquefaction, rock falls and other effects in the surrounding areas.
Article
Environmental Sciences
Yibin Ao, Jinglin Zhong, Zijun Zhang, Lili Han, Yan Wang, Yunfeng Chen, Tong Wang
Summary: Residents' satisfaction with post-disaster reconstruction in earthquake-stricken areas directly affects their quality of life. This study investigated the factors and relationships influencing villagers' satisfaction with post-disaster reconstruction in Wenchuan earthquake-stricken areas. The results showed that knowledge about the reconstruction, increased family income, and public factors all significantly affected residents' overall satisfaction. This study enriches the theory and practice of residents' satisfaction studies and post-earthquake reconstruction.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Markus Anda, Setiyo Purwanto, Erna Suryani, Husnain, Muchtar
Summary: The study assessed and evaluated the impact of earthquake-induced liquefaction, tsunami, and landslide on soil mineralogical compositions, properties, heavy metals, and water quality in Palu, Indonesia. The results showed significant changes in ecosystem landscape and soil formation, with high nutrient reserve in liquefied soils but severe limiting factors for crop establishment. Information from the study may provide a strong effective basis for rehabilitation and management of agriculture and the environment in post-disaster areas in the long-term.
Article
Public, Environmental & Occupational Health
Yanlin Yang, Wenqi Zeng, Bingqing Lu, Jin Wen
Summary: This study found that 9.7% of survivors of the Wenchuan earthquake experienced delayed-onset PTSD symptoms, with unemployed survivors at higher risk and higher perceived social support serving as a protective factor against developing these symptoms. Active social support and stable employment opportunities are important for the mental health of earthquake survivors.
FRONTIERS IN PUBLIC HEALTH
(2021)
Article
Construction & Building Technology
Dafni Pantousa, Theodoros Karavasilis, Chrysanthos Maraveas
Summary: Research on seismic performance of steel structures has led to improved structures that minimize damage and can be reused after an earthquake. However, research on the reuse of steel structures after a fire event is limited. This paper investigates the seismic performance of steel columns that are pre-damaged due to fire.
Article
Engineering, Geological
Wen Zhang, Junqi Chen, Junhua Ma, Chen Cao, Han Yin, Jia Wang, Bo Han
Summary: This study investigates the evolution of sediment and the impact of check dams on it in the Chutou gully during the 2019 and 2020 debris flow. The results show that the sediment evolution remains active in recent years, emphasizing the need for debris flow protection in seismic areas. Check dams play an essential role in protecting against debris flows and significantly influence sediment evolution. It is important to focus on the storage capacity and stability of check dams to prevent subsequent debris flow.
Article
Geochemistry & Geophysics
Lei Zhang, Yajing Liu, Duo Li, Hongyu Yu, Changrong He
Summary: The study examines the impact of fault geometry on coseismic rupture and paleoseismic behavior through earthquake sequence modeling on the Yingxiu-Beichuan Fault (YBF) of the 2008 Wenchuan earthquake. The results demonstrate consistent patterns with field observations, illustrating whole-fault ruptures and partial rupture events. The magnitude of the earthquakes is influenced by the location along the fault, with larger events occurring in the southern segment of the YBF. The recurrence intervals of the events are primarily determined by the tectonic loading rate. The study also highlights the importance of fault strike angle in controlling coseismic slip distribution.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Engineering, Geological
Yang Yang, Longwei Chen, Rui Sun, Yongxiang Chen, Weiming Wang
ENGINEERING GEOLOGY
(2017)
Article
Engineering, Civil
Longwei Chen, Xiaoming Yuan, Zhenzhong Cao, Rui Sun, Weiming Wang, Huida Liu
EARTHQUAKE SPECTRA
(2018)
Article
Engineering, Geological
Longwei Chen, Ezio Faccioli
BULLETIN OF EARTHQUAKE ENGINEERING
(2013)
Article
Engineering, Civil
Sun Rui, Tang Fuhui, Chen Longwei
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
(2011)
Article
Engineering, Geological
Xiaoming Yuan, Rui Sun, Longwei Chen, Fuhui Tang
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2010)
Article
Engineering, Geological
Rui Sun, Longwei Chen, Xiaoming Yuan
BULLETIN OF THE NEW ZEALAND SOCIETY FOR EARTHQUAKE ENGINEERING
(2013)