Article
Engineering, Civil
Luca Masini, Sebastiano Rampello, Riccardo Donatelli
Summary: This paper investigates the seismic performance of two idealized earth dams, comparing homogeneous dams with zoned dams and highlighting the impact of factors such as dam slope, shear strength mobilization, and stiffness at the shells-core contacts. The study reveals that for highly inelastic systems, the duration of input motion should be considered in addition to compatibility criteria with a design elastic response spectrum. The findings provide guidance for the rational assessment of the seismic performance of these classes of earth dams.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2021)
Article
Engineering, Geological
Jiany Ji, Chen-Wei Wang, Hong-Zhi Cui, Xiao-Yu Li, Jian Song, Yufeng Gao
Summary: This study investigates the seismic performance of earth slopes using different Newmark displacement calculation frameworks, focusing on the degrading effect of yield acceleration. The research findings show that the seismic displacement reaches peak value at small period ratios and drops to zero rapidly, while also discussing the potential influence of shear rate on soil shear strength.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2021)
Article
Geosciences, Multidisciplinary
Shuai Huang, Ran Tao, Rong Wang
Summary: The traditional Newmark method does not consider the seismic amplification effect in soil slopes, leading to deviations in the seismic stability analysis of soil slopes. To address this, a simplified method for evaluating the stability of unsaturated slopes is proposed by combining the Sweden slice method and Newmark method. Research has shown that the seismic amplification effect has a significant influence on the yield acceleration of slopes, while it has minimal impact on the shape of the critical slip surface. Neglecting the seismic amplification effect underestimates the permanent displacement of slopes and poses potential dangers in the seismic design of slope engineering. Additionally, a scaled unsaturated slope model is designed and the progressive failure process under seismic action is simulated, demonstrating the feasibility of the proposed method. This study provides a simple and reliable approach for evaluating the seismic stability of unsaturated slopes.
GEOLOGICAL JOURNAL
(2023)
Article
Engineering, Civil
Aiyun Jin, Yixiang Qiu, Jinting Wang
Summary: This study compares the application of multiple stripe analysis (MSA), cloud analysis (CLA), and incremental dynamic analysis (IDA) methods in the seismic fragility analysis of arch dams. A comprehensive dam-reservoir-foundation rock system is used as a numerical example, considering factors such as the opening of contraction joints, nonlinearity of dam concrete and foundation rock, radiation damping effect of semi-unbounded foundation, and compressibility of reservoir water. 225, 80, and 15 earthquake records are selected for MSA, CLA, and IDA, respectively. The results show that MSA provides satisfactory fragility analysis, while CLA and IDA have assumptions that may lead to deviations. Therefore, MSA is considered the most reliable method for the fragility analysis of arch dams. It is also found that the choice of demand level affects the reliability of fragility curves, and the effect of material uncertainty on dam fragility is not significant.
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
(2023)
Article
Computer Science, Interdisciplinary Applications
Stefania Sica, Angelo Dello Russo
Summary: The paper discusses the seismic response of earth dams close to active faults, emphasizing the importance of this issue for engineering implications. Using the case study of Conza Dam in Italy, the paper demonstrates the severe damage caused by the 1980 Irpinia earthquake and the physics-based approach adopted to model seismic wave propagation from the causative fault to the dam site.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Computer Science, Interdisciplinary Applications
Sajad Haghdadi Kalashemi, Mahmood Rabani Bidgoli, Hamid Mazaheri
Summary: This paper investigates the impact of moving force and seismic load on the dynamic displacement and optimization of concrete bridges. Mathematical modeling using the sinusoidal shear deformation beam theory is employed, and the Kelvin-Voigt theory is used to account for structural damping. Numerical methods and optimization algorithms are applied to solve the equations and optimize the bridge design. The results show the influence of various parameters on the dynamic displacement of the bridge, and indicate the optimal values for different conditions.
JOURNAL OF COMPUTATIONAL DESIGN AND ENGINEERING
(2022)
Article
Construction & Building Technology
Jixing Cao, Haibei Xiong, Yongxiang Cui
Summary: The seismic performance of timber frame structures and cyclic behavior of beam-column joints were investigated through experiments and numerical modeling. A simplified model was updated using the Bayesian method, resulting in an accurate and reliable model for parametric studies. The calibrated model can be extended to complex structural configurations, providing a reference for practical design of timber buildings.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Luca Masini, Sebastiano Rampello
Summary: This paper investigates several influential factors in the assessment of seismic performance, including bedrock compliance, vertical component of ground motion, stabilizing berms, and initial pore water pressure distribution. By developing a simplified 2D model, it provides guidance on the safe assessment of seismic performance for existing earth dams.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Mohammad Mahdi Javidan, Jinkoo Kim
Summary: This research introduces an integrated system tool in MATLAB for evaluating seismic performance, fragility, and life-cycle costs of structures using conventional procedures. Results show that the system can approximate analysis results with reasonable accuracy and computational demands, providing an acceptable tradeoff for intensive computations.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Mathematics, Applied
Ikaro Daniel de Carvalho Barreto, Tatijana Stosic, Romulo Simoes Cezar Menezes, Antonio Samuel Alves da Silva, Osvaldo A. Rosso, Borko Stosic
Summary: This study investigated the impact of the construction of cascade dams and reservoirs on the predictability and complexity of the Sao Francisco River's streamflow in Brazil. The research found that the reservoirs' operations made the streamflow series less predictable. Weighted CECP provided finer details in the predictability of streamflow due to the inclusion of amplitude information. The study also revealed the influence of the Paulo Alfonso complex and identified a streamflow alteration unrelated to the dams' construction.
Article
Engineering, Geological
Xiaodong Fu, Wenjie Du, Qian Sheng, Jian Chen, Qiang Fang, Yongqiang Zhou
Summary: The Newmark sliding block method combined with block theory can be used to evaluate the dynamic stability of a rock block; frequent changes in the position of a rock block under seismic action may affect the contact areas and contact modes of sliding faces; extending the dynamic Newmark method can better reflect the dynamic response of a rock block under seismic action.
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
(2021)
Article
Engineering, Geological
Negin Yousefpour, Farid Fazel Mojtahedi
Summary: This study introduces a novel artificial intelligence (AI) method to identify the temporal patterns within the passive seismic monitoring data, which can be associated with internal erosion initiation in earth dams. The proposed deep learning framework combined with continuous seismic monitoring can serve as a basis for developing advanced early warning systems for internal erosion in earth dams.
GEORISK-ASSESSMENT AND MANAGEMENT OF RISK FOR ENGINEERED SYSTEMS AND GEOHAZARDS
(2023)
Article
Engineering, Civil
Ugur Akpinar, Yalin Arici, Baris Binici
Summary: In this study, a quantitative damage estimation approach considering post-earthquake effects was proposed to investigate the challenges in seismic damage assessment of concrete gravity dams. The effects of post-earthquake factors on crack propagation and damage states were quantified through nonlinear time history analyses. The results and methodology can assist dam management organizations in reassessing seismic analysis results considering post-earthquake effects.
STRUCTURE AND INFRASTRUCTURE ENGINEERING
(2023)
Article
Environmental Sciences
Antonio dos Anjos Luis, Pedro Cabral
Summary: Using GIS and AHP method, this study identified the most suitable locations for small dams/reservoirs in the Tete province region of Mozambique. Results showed that most abandoned small dams/reservoirs were in areas classified as modestly suitable, while currently operating and planned dams/reservoirs were mainly located in similar areas, indicating that construction decisions may not have fully considered suitability factors.
INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
(2021)
Article
Engineering, Geological
Yafei Zhai, Liaojun Zhang, Zhonghui Bi, Hanyun Zhang, Binghui Cui
Summary: This study establishes an overall damage mechanics model for the concrete dam body and foundation, considering the degradation of concrete properties due to alkali-aggregate reaction (AAR) and the influence of main shock and aftershock. The seismic performance of AAR-affected concrete dam with different operating years is evaluated. The research results show that AAR significantly affects the damage of the dam, and the damage index increases significantly with the increase in the dam's operating years.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Environmental Sciences
Michel Hathout, Laurent Peyras, Claudio Carvajal, Youssef Diab, Marc Vuillet
JOURNAL OF FLOOD RISK MANAGEMENT
(2020)
Article
Forestry
P. Defossez, G. Veylon, M. Yang, J. M. Bonnefond, D. Garrigou, P. Trichet, F. Danjon
Summary: This study investigates the impact of changing soil hydrological conditions in Europe due to climate change on the anchor resistance of pine trees. Research findings demonstrate that the resistance to uprooting of trees is not significantly affected by soil water content outside the domain of complete soil saturation. However, near saturation, the anchor resistance of trees can dramatically decrease, particularly in sandy soil.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Engineering, Geological
Hao Xiong, Zhen-Yu Yin, Francois Nicot, Antoine Wautier, Miot Marie, Felix Darve, Guillaume Veylon, Pierre Philippe
Summary: This paper introduces a novel multi-scale approach for modelling granular column collapse, utilizing a micro-mechanical model and SPH method to successfully simulate the flow of granular column under low water content conditions. The numerical results show good agreement with experimental observations and capture meso-scale behavior.
Article
Geosciences, Multidisciplinary
Barbara Frigo, Perry Bartelt, Bernardino Chiaia, Igor Chiambretti, Margherita Maggioni
Summary: On January 18, 2017, a catastrophic avalanche hit the Rigopiano Gran Sasso Resort & Wellness in Italy, resulting in 29 deaths; investigations revealed it was a fluidized dry snow avalanche with wood-snow mixture phenomenon.
INTERNATIONAL JOURNAL OF DISASTER RISK SCIENCE
(2021)
Article
Engineering, Industrial
Franck Taillandier, Cedric Baudrit, Claudio Carvajal, Benjamin Delhomme, Bruno Beullac
Summary: This paper aims to propose a new methodological approach to formalize the opinions of experts in forensic engineering, by combining abstract argumentation with the theory of imprecise probabilities. The research presents a model and a tool to support forensic analysis, with an application on the collapse of the Brumadinho dam highlighting the interest of the chosen approach. This work is the first use of the abstract argument framework in civil engineering, providing an innovative model based on imprecise probability for AAF.
ENGINEERING CONSTRUCTION AND ARCHITECTURAL MANAGEMENT
(2022)
Article
Computer Science, Interdisciplinary Applications
A. Wautier, G. Veylon, M. Miot, M. Pouragha, F. Nicot, R. Wan, F. Darve
Summary: The paper highlights the significance of the H-model in geotechnical engineering, which is a micromechanical approach that can effectively capture the mechanical behavior and mesostructures of granular media.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Computer Science, Interdisciplinary Applications
Xiangfeng Guo, Daniel Dias, Claudio Carvajal, Laurent Peyras, Pierre Breul
Summary: The study uses different types of RF for soil spatial modeling and investigates their effects on dam reliability. The results show that using a simple RF is sufficient for satisfactory results in well-controlled dam constructions, while non-typical RFs may require more accurate data.
ENGINEERING WITH COMPUTERS
(2022)
Article
Materials Science, Multidisciplinary
Marie Miot, Guillaume Veylon, Antoine Wautier, Pierre Philippe, Francois Nicot, Frederic Jamin
Summary: This study proposes a numerical approach to compute capillary forces between assemblies of two or three grains, validated for standard capillary bridges between grains and extending to triplets. The influence of contact angle, surface tension, and gravity on capillary force, volume of coalescence, and bridge morphology is further investigated. This study sets the foundation for incorporating capillary effects in micromechanical models based on mesostructures composed of a few grains.
Article
Engineering, Environmental
Xiangfeng Guo, Daniel Dias, Claudio Carvajal, Laurent Peyras, Pierre Breul
Summary: This study investigates the 3D probabilistic analysis of earth dams and compares it with the traditional 2D approach. It finds that using a 3D computational model can provide smaller estimates for dam failure probability, especially in the case of a negative correlation between soil shear strength parameters. The study also highlights the importance of using an appropriate mesh condition for accurate failure probability estimation.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Computer Science, Interdisciplinary Applications
T. Mohamed, J. Duriez, G. Veylon, L. Peyras
Summary: Two different DEM models were proposed to quantitatively simulate the macroscopic response of Toyoura sand under various loading conditions. The first model used spherical particles with additional rolling resistance stiffness, while the second model used 3D polyhedrons defined from 2D micrographs of Toyoura particles. Both models were calibrated using triaxial compression tests, showing similar predictive abilities but the polyhedral approach was easier to calibrate and offered a more precise description of particle shapes and initial fabric anisotropy.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Environmental Sciences
Florence Mainguenaud, Laurent Peyras, Usman T. T. Khan, Claudio Carvajal, Jitendra Sharma, Bruno Beullac
Summary: To improve protection against fluvial floods, a method was developed to assess levee failure probabilities using fragility curves for sliding, backward erosion, and overflowing. Two approaches were tested to aggregate the fragility curves: an enveloping curve and Monte-Carlo simulations. The method was implemented for earthen levee reliability along the Bow River in Calgary, Canada, considering different flood return periods. The results showed that the Monte-Carlo aggregated fragility curve provided a more realistic representation of failure mechanisms compared to the envelop curve, with equivalent computation time.
JOURNAL OF FLOOD RISK MANAGEMENT
(2023)
Article
Computer Science, Interdisciplinary Applications
Fengdong Chi, Pierre Breul, Claudio Carvajal, Laurent Peyras
Summary: This study performs a stochastic analysis of seepage through an embankment dam by using and comparing three types of random fields (RFs). The results show that different RFs have different impacts on the seepage results, with significant effects on flow velocity, moderate effects on hydraulic gradient, and minor effects on pore pressure.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Geological
T. Mohamed, J. Duriez, G. Veylon, L. Peyras, P. Soulat
Summary: This article presents a discrete element method model for simulating tropical residual soils and discusses its applications and advantages. The model provides both macroscopic and microscopic information on the mechanical behavior of tropical soils and can be used for numerical modeling and analysis.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Geological
Tarek Mohamed, Jerome Duriez, Guillaume Veylon, Laurent Peyras, Patrick Soulat
Summary: A three-dimensional multi-scale discrete-continuum model (FVM x DEM) is developed for describing the mechanical behavior of granular soils in boundary value problems. The model incorporates direct DEM computations on representative volume elements to derive the constitutive response. The multi-scale approach considers the inertial effect in stress homogenization and is compared with a classical BVP simulation adopting a bounding surface plasticity model.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Geological
Nicola Viale, Barbara Frigo, Giulio Ventura
Summary: This paper focuses on glide avalanches originating from glide cracks and analyzes the triggering mechanism and stability of the slab using the Stauchwall model and stress failure criterion. The results show that increasing basal snow/soil friction can effectively prevent glide avalanches.
GEAM-GEOINGEGNERIA AMBIENTALE E MINERARIA-GEAM-GEOENGINEERING ENVIRONMENT AND MINING
(2022)
Article
Engineering, Geological
Shaohui Liu, Lizhong Jiang, Wangbao Zhou, Jian Yu
Summary: This study evaluates the post-earthquake damage to track-bridge systems by conducting nonlinear time history analysis on a CRTS II ballastless track simply-supported beam system subjected to transverse earthquake loading. It explores the characteristics of residual displacement and stiffness degradation of the track-bridge system under transverse earthquakes. The research investigates the effect of earthquake-induced stiffness degradation on high-speed trains and proposes a reconstruction method for earthquake-induced dynamic irregularity characteristic curve considering probability guarantee rates. The results indicate that earthquake-induced dynamic irregularity can effectively quantify the running performance of high-speed trains under earthquake-induced stiffness degradation conditions.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Rui Zhang, Xiangqian Sheng, Wenliang Fan
Summary: This study introduces a novel approach for the probabilistic assessment of seismic earth pressure against nonlinear backfills. Nonlinear upper bound analysis is used to obtain the seismic earth pressure through optimization procedure, and probability analysis of nonlinear backfill properties is considered by combining adaptive dimension decomposition with the direct integral method.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Qiangqiang Sun, Yu Xue, Menghao Hou
Summary: This study investigated the use of Tire-derived aggregate (TDA) as backfill material for geotechnical seismic isolation in utility tunnels. Nonlinear numerical analyses were conducted, and the results showed that TDA backfill was an excellent alternative for risk mitigation during strong earthquakes, significantly reducing deformation and forces. The proposed system could potentially save costs compared to expensive seismic mitigation measures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Yan-Guo Zhou, Dong-Chao Zhang, Kai Liu, Yun-Min Chen
Summary: This study investigated the large deformations caused by liquefaction in sloping ground and the methods for evaluation and mitigation. Soil element tests and centrifuge model tests were conducted to study the relationship between residual strain and Post-liquefaction Deformation Potential (PLDP). The tests showed that the developments of residual strain were controlled by PLDP, which is correlated with the maximum cyclic shear strain. The applicability of PLDP was verified in model tests, and the mitigation mechanisms of densification and drainage induced by stone columns were observed.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jiajin Zhao, Zhehao Zhu, Dexuan Zhang, Hao Wang, Xi Li
Summary: This paper studies the fabric properties during sand liquefaction using 3D constant-volume cyclic triaxial DEM tests. The results show good consistency with experimental data. The evolution of fabric characteristics is assessed using the coordination number and mechanical coordination number. The second-order contact normal fabric tensor is introduced to analyze complex inter-particle contacts and the shear strain is used as a bridge to describe the evolution of coordination number and anisotropy degree.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinqiang Li, Zilan Zhong, Shurui Wang, Kaiming Bi, Hong Hao
Summary: The corrosion-protection liner technology improves the seismic performance of water supply pipelines and reduces the failure probability under earthquake excitations.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Abdellah Cherif Taiba, Youcef Mahmoudi, Mostefa Belkhatir
Summary: This article provides a comprehensive analysis of Liu et al.'s (2023) published paper in the Soil Dynamics and Earthquake Engineering journal, which examines the impact of particle shape on the wave velocity of sand. By enhancing the content integrity, this article serves as a valuable discussion piece for readers interested in this research topic.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Weijian Zhong, Binbin Li, Yanhui Liu, Ping Tan, Fulin Zhou
Summary: In this paper, the Flexible Limit Protective Device (FLPD) was improved to a Flexible Energy Dissipating Device (FEDD) to better control the seismic response of base-isolated structures. Experimental investigation and numerical simulation were conducted to study the compression behavior and optimize the design of FEDDs. The results showed that FEDDs with optimal parameters effectively reduced isolator displacements and kept the inter-story drift angle within a safe range during earthquakes.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Xinhua Xue, Xiaojie Yuan, Li Tao
Summary: In this study, gene expression programming (GEP) was used to establish the relationship between the capacity energy required to trigger sand liquefaction and several major parameters. The GEP model showed higher accuracy and better performance compared to existing models, as confirmed by experimental data.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Xiao-ling Zhang, Hao Lan, Xian-hui Zhao, Cheng-shun Xu, Ke-min Jia
Summary: The study investigates the reinforcement principle of inclined liquefiable site using concrete pile and gravel pile methods. The results show that concrete piles have a better reinforcement effect on inclined liquefiable site compared to gravel piles, and increasing the diameter of gravel piles greatly improves the reinforcement effect. The pile group reinforcement model is more effective in reducing lateral displacement of the site soil compared to the single pile reinforcement model.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinxin Sun, Haoyu Sun, Mengmeng Lu, Bolin Han
Summary: The implementation of stone columns is an effective way to improve the stability of liquefiable soil. However, existing mathematical models often neglect vertical seepage within the soil, leading to calculation errors. This study proposes a new mathematical model that considers both radial and vertical seepage, and conducts a parameter analysis to investigate the effects of column spacing, cyclic stress ratio, and consolidation parameters on excess pore water pressure.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jonathan F. Hubler, James P. Hanley, Andrew C. Stolte, Liam Wotherspoon, Kyle M. Rollins
Summary: This study performed blast liquefaction tests in an area that experienced extensive liquefaction. It used multi-channel analysis of surface waves (MASW) testing to evaluate changes in shear wave velocity (VS) before and after blasting. The study found that array length has an impact on the immediate changes in VS following blasting, but these changes decrease at 24 hours post-blast.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Lowell Tan Cabangon, Gaetano Elia, Mohamed Rouainia, Suraparb Keawsawasvong, Teraphan Ornthammarath
Summary: The impact of far-field earthquakes on underground structures, especially tunnels, has been relatively less explored compared to near-field earthquakes. However, the study found that far-field earthquakes can generate forces in tunnel lining that are equally destructive as those induced by near-field motions, especially when they contain long-period waves. The amplification of these ground motions in soft natural clays, common in Bangkok, can lead to significant soil displacements and shear strains.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Jinjun Hu, Longbing Ding, Xutong Zhou, Mingji Liu, Jingyang Tan
Summary: Offshore near-fault ground motions during the 2016 OffMie Mw6.0 earthquake in the Nankai Trough of Japan were studied using data from the DONET1 seafloor seismic network. The results show that offshore spectral acceleration and peak ground velocity are higher than onshore values. Analysis of pulse-like ground motions reveals differences in amplitude, frequency content, and energy between offshore and onshore motions. These findings have implications for seismic design of offshore engineering structures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
Article
Engineering, Geological
Radu Popescu, Pradipta Chakrabortty
Summary: The natural spatial variability of soil properties affects the mechanical response of geotechnical structures and can deviate failure surfaces. For soil liquefaction induced by seismic activity, it has been found that greater excess pore water pressure is generated in soils with small-scale variability. This paper provides an explanation based on centrifuge experiments and numerical simulations, showing that partial drainage during earthquakes may trigger softening of dilative soils.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2024)
