Computers and Geotechnics最新文献_第2页

Response of offshore wind turbine tripod suction bucket foundation under wind and multi-directional seismic loading conditions 海上风力机三脚架吸桶基础在风和多向地震荷载作用下的响应

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-29 DOI: 10.1016/j.compgeo.2025.107666

Dingtao Yan , Rui Liu , Yue Yan , Dengfeng Fu , Dong Wang

{"title":"Response of offshore wind turbine tripod suction bucket foundation under wind and multi-directional seismic loading conditions","authors":"Dingtao Yan , Rui Liu , Yue Yan , Dengfeng Fu , Dong Wang","doi":"10.1016/j.compgeo.2025.107666","DOIUrl":"10.1016/j.compgeo.2025.107666","url":null,"abstract":"<div><div>This study investigates the seismic response of tripod suction bucket foundations supporting offshore wind turbines on clay, considering both isolated seismic loads and combined wind-seismic loading. A holistic 3D finite element model integrates the NREL 5 MW turbine, tower, jacket, foundation, and soil domain. The kinematic hardening constitutive model captures the cyclic clay behaviour under seismic excitation. Super-element techniques significantly enhance computational efficiency by condensing the superstructure. Analyses encompass unidirectional and multidirectional seismic inputs, including the Kobe, Loma Prieta, and Northern California earthquake record, alongside constant wind loads. Results demonstrate that foundation rotation, critical for serviceability, is primarily governed by differential vertical settlement among the suction caissons induced by overturning moments. Horizontal seismic loads cause significant differential settlement, while vertical seismic loads induce uniform settlement. Crucially, the superposition of constant wind load amplifies the permanent settlements and rotations caused by seismic events. Under favourable wind conditions, co-directional horizontal seismic loading most significantly amplifies rotational response. Under critical wind conditions, orthogonal horizontal seismic loading maximizes rotational amplification. The validated model provides insights into the complex soil-structure interaction mechanisms governing the stability of tripod foundations under multi-hazard conditions.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107666"},"PeriodicalIF":6.2,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 3D-DEM investigation on the effect of initial anisotropy in granular soils mixed with varying fines content 不同细粒含量颗粒土初始各向异性影响的3D-DEM研究

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-29 DOI: 10.1016/j.compgeo.2025.107648

Masoomeh Karimi, Ali Lashkari

引用次数: 0

Joint spatial variability of depth to bedrock, hydraulic, and shear strength parameters in 3D landslide prediction 三维滑坡预测中基岩深度、水力和抗剪强度参数的联合空间变异性

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-27 DOI: 10.1016/j.compgeo.2025.107662

David Sebastian Calpa , Guilherme J.C. Gomes , Euripedes A. Vargas Jr. , Raquel Q. Velloso , Fabricio Fernández , Marcelo Miqueletto

{"title":"Joint spatial variability of depth to bedrock, hydraulic, and shear strength parameters in 3D landslide prediction","authors":"David Sebastian Calpa , Guilherme J.C. Gomes , Euripedes A. Vargas Jr. , Raquel Q. Velloso , Fabricio Fernández , Marcelo Miqueletto","doi":"10.1016/j.compgeo.2025.107662","DOIUrl":"10.1016/j.compgeo.2025.107662","url":null,"abstract":"<div><div>Landslides in unsaturated slopes result from complex and uncertain interactions among rainfall infiltration, soil hydraulic and mechanical parameters, and subsurface geometry. While these factors have been widely studied in isolation, their combined influence under fully three-dimensional and transient conditions remains insufficiently explored. This study develops and applies an integrated probabilistic framework for slope stability analysis that explicitly incorporates the spatial variability of shear strength, hydraulic parameters, and bedrock surface geometry. The framework combines the Stepwise Covariance Matrix Decomposition technique for random field generation, transient pore-pressure simulation via Richards equation, and Numerical Limit Analysis to evaluate failure mechanisms. It is applied to a tropical hillslope in Rio de Janeiro, Brazil, using site-specific geotechnical and hydrological data. Slope stability is evaluated at multiple time steps during a 22-day extreme rainfall event, following a 180-day spin-up period to establish realistic initial conditions. Results reveal that bedrock variability exerts dominant control on pore-pressure evolution, while spatial fluctuations in cohesion primarily govern failure extent and timing. Initial failures occur in zones characterized by low cohesion, low hydraulic conductivity, and thin soil cover. These findings underscore the importance of jointly modeling multiple sources of spatial uncertainty to improve the reliability of landslide hazard assessments in tropical environments.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107662"},"PeriodicalIF":6.2,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved micro-elastoplastic constitutive model based on peridynamics and its numerical verification 基于周动力的改进微弹塑性本构模型及其数值验证

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-27 DOI: 10.1016/j.compgeo.2025.107664

Zixiang Yao , Zhiliang Wang , Jianguo Wang , Zhitang Lu

{"title":"Improved micro-elastoplastic constitutive model based on peridynamics and its numerical verification","authors":"Zixiang Yao , Zhiliang Wang , Jianguo Wang , Zhitang Lu","doi":"10.1016/j.compgeo.2025.107664","DOIUrl":"10.1016/j.compgeo.2025.107664","url":null,"abstract":"<div><div>This study proposes an improved micro-elastoplastic (IME) constitutive model within the bond-based peridynamic framework to tackle the challenges in characterizing the nonlinear mechanical behavior and fracture patterns of rock materials. Firstly, a statistical damage model based on the Weibull distribution was integrated to simulate the spatial distribution of natural microcracks. Moreover, a dual-parameter bond stiffness formulation was introduced to overcome the inherent limitation of the fixed Poisson’s ratio in conventional bond-based peridynamics. The validity and robustness of the proposed IME model were subsequently demonstrated through three representative numerical simulations: uniaxial compression of intact sandstone, cyclic loading–unloading of marble, and uniaxial compression of pre-fissured sandstone. The results show that the IME model can accurately reproduce the complete stress–strain responses of sandstone under uniaxial compression, including the elastic stage, strain hardening, and post-peak softening, while also capturing the characteristic hysteresis effect during cyclic loading and unloading of marble. Furthermore, the model effectively describes damage distribution in fractured rock under uniaxial compression and highlights the significant influence of fissure angle on peak strength. The simulation outcomes exhibit strong agreement with experimental results in terms of stress–strain relationships, crack propagation paths, and final failure patterns. Overall, the proposed IME model provides a solid theoretical framework and a reliable numerical tool for simulating the multi-scale mechanical behavior of rock materials.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107664"},"PeriodicalIF":6.2,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quasi-static modeling with explicit numerical manifold method via timestep scaling technique and velocity-based viscous damping model 基于时间步长标度技术的显式数值流形准静态建模和基于速度的粘性阻尼模型

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-27 DOI: 10.1016/j.compgeo.2025.107663

Junfeng Li , Yongtao Yang , Xuhai Tang , Yun Zheng , Shuilin Wang

{"title":"Quasi-static modeling with explicit numerical manifold method via timestep scaling technique and velocity-based viscous damping model","authors":"Junfeng Li , Yongtao Yang , Xuhai Tang , Yun Zheng , Shuilin Wang","doi":"10.1016/j.compgeo.2025.107663","DOIUrl":"10.1016/j.compgeo.2025.107663","url":null,"abstract":"<div><div>An explicit numerical manifold method (NMM) is developed to solve quasi-static continuous and discontinuous geotechnical engineering problems. However, due to the small timestep size for explicit time integration scheme, the number of calculation steps is usually very large, and the analysis process may be very time-consuming, especially for large-scale rock and soil masses. As the extension to the mass-scaling technique, a timestep-based mass-scaling technique (timestep scaling technique) is introduced to explicit NMM in this study to model quasi-static geotechnical problems more effectively. This technique scales the lumped mass matrix through the formula of critical timestep size <span><math><mrow><mi>Δ</mi><msub><mi>t</mi><mi>c</mi></msub></mrow></math></span> directly, and <span><math><mrow><mi>Δ</mi><msub><mi>t</mi><mi>c</mi></msub></mrow></math></span> can be increased to be larger than the required timestep size <span><math><mrow><mi>Δ</mi><mi>t</mi></mrow></math></span>. In addition, to dissipate the kinetic energy of the system, a velocity-based viscous damping model is used to weaken the dynamic response and accelerate the convergence speed to reach the final state of the quasi-static problem. Through a series of verification and application examples, it has been proven that the timestep scaling technique and velocity-based viscous damping model in the context of the explicit NMM can efficiently solve quasi-static problems.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107663"},"PeriodicalIF":6.2,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A semi-analytical solution for the load-transfer behaviors of precast concrete pile reinforced by cemented soil with long-core in layer soils 层状土中长芯水泥土加筋预制混凝土桩荷载传递特性的半解析解

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-26 DOI: 10.1016/j.compgeo.2025.107665

Chaozhe Zhang , Roberto Cudmani , Songyu Liu , Dingwen Zhang , Zhen Wang , Pan Zhou

{"title":"A semi-analytical solution for the load-transfer behaviors of precast concrete pile reinforced by cemented soil with long-core in layer soils","authors":"Chaozhe Zhang , Roberto Cudmani , Songyu Liu , Dingwen Zhang , Zhen Wang , Pan Zhou","doi":"10.1016/j.compgeo.2025.107665","DOIUrl":"10.1016/j.compgeo.2025.107665","url":null,"abstract":"<div><div>Precast Concrete Piles Reinforced by Cemented Soil (PCCS), a novel composite pile, has been widely employed for soft ground treatment. In this technique, the precast concrete (PC) pile is installed in the center of a deep mixing (DM) column, thereby effectively harnessing the benefits of both technologies. However, modelling the load transfer of the composite pile is quite complex due to the different materials (soft soil, cemented soil and concrete) and interfaces (soft soil-cemented soil, soft soil-concrete, cemented soil-pile) involved. Particularly, studies on the axial load-transfer behavior of the PCCS with long-core (inner core), in which the PC piles is significant longer than the DM columns, remain limited. This contribution proposes an 1D semi-analytical load transfer model for the PCCS with long-core in layered soils, which takes into account the shear force transfer at the different interfaces and the mechanical behavior of the natural soil, cemented soil, the pile and the interface. By comparing and analyzing the mechanical responses of PCCSs under loads applied to the inner core head (loading mode I) and the entire cross-section of the PCCSs (loading mode II), the ability of the model to describe the experimental behavior is investigated. The results indicate that the distribution of the axial force along the pile shaft and the skin friction resistance at the interfaces of the PCCS with long-core can be realistically reproduced by the model. It is observed that the ultimate bearing capacity of the PCCS under loading mode II is about 15% higher than that under loading mode I.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107665"},"PeriodicalIF":6.2,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A closed-form model of saline soil freezing curve developed using symbolic regression and its numerical implementation 采用符号回归方法建立了盐渍土冻结曲线的封闭模型并进行了数值实现

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-24 DOI: 10.1016/j.compgeo.2025.107659

Yandi Wu , Yijie Wang , Liming Hu

{"title":"A closed-form model of saline soil freezing curve developed using symbolic regression and its numerical implementation","authors":"Yandi Wu , Yijie Wang , Liming Hu","doi":"10.1016/j.compgeo.2025.107659","DOIUrl":"10.1016/j.compgeo.2025.107659","url":null,"abstract":"<div><div>The soil freezing characteristic curve (SFCC) plays a crucial role in modeling coupled water-heat-salt transport in saline frozen soils. However, existing SFCC models are either empirical, lacking the ability to capture dynamic salt transport, or theoretically based but too complex for numerical implementation due to intricate formulations or the requirement for iterative algorithms and many parameters. To overcome these limitations, this study employs symbolic regression to derive a closed-form SFCC model, trained on synthetic data generated by a theoretical model grounded in the pore water freezing theory. The proposed model performs well in reflecting theoretical results across various soil types and initial water contents, providing a concise yet physically meaningful representation of the pore solution freezing mechanisms. The reliability of the model is demonstrated by comparison with 26 sets of experimental SFCC data. Furthermore, the model is simple in form and is successfully applied to simulate the coupled water-heat-salt transport during one-dimensional freezing. The simulations reasonably capture frost heave, temperature evolution, and water content variation under different initial and boundary conditions, in agreement with experimental results. The findings indicate that increasing boundary salinity elevates internal salt concentration and depresses the local freezing point, leading to an upward shift (closer to the cold end) of the freezing front. Meanwhile, ice formation causes salt accumulation at the freezing front. The proposed closed-form SFCC model allows for time-varying salt concentration in soils to be incorporated into fully coupled moisture and temperature fields, offering both strong theoretical grounding and promising potential for numerical applications.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107659"},"PeriodicalIF":6.2,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145158742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three–dimensional continuous–discontinuous pipe network method for simulating fractured and porous seepage 三维连续-不连续管网裂缝与多孔渗流模拟方法

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-23 DOI: 10.1016/j.compgeo.2025.107656

Hanxun Wang , Zhe Sun , Bin Zhang

{"title":"Three–dimensional continuous–discontinuous pipe network method for simulating fractured and porous seepage","authors":"Hanxun Wang , Zhe Sun , Bin Zhang","doi":"10.1016/j.compgeo.2025.107656","DOIUrl":"10.1016/j.compgeo.2025.107656","url":null,"abstract":"<div><div>Fractured seepage and porous seepage are critical factors affecting the safety of geotechnical structures in tunneling, slope engineering, and underground energy storage projects. On the basis of the pipe network method (PNM), the three–dimensional continuous–discontinuous pipe network method (C–DPNM<sup>3D</sup>) with high grid adaptability is developed to address the problem of insufficient simulation efficiency of fractured seepage and porous seepage. C–DPNM<sup>3D</sup> uses Darcy’s law and the mass conservation law as the control equations and combines the first and second boundary conditions. The simulation results of this method are compared with those of the typical finite element method (FEM) and discrete element method (DEM), and its feasibility is confirmed. This method is applied to underground water–sealed oil storage in China. The results reveal that compared with those of the FEM and DEM, the error rate of C–DPNM<sup>3D</sup> in calculating three–dimensional large–scale porous seepage and fractured seepage is less than 4.34%, and the computational efficiency increases by more than 99.90%. The large–scale three–dimensional fractured seepage and porous seepage is simulated efficiently, and the application effect in the field of underground water–sealed oil storage is good. C–DPNM<sup>3D</sup> is a universal, reliable and efficient method for seepage calculation of underground rock mass structures.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107656"},"PeriodicalIF":6.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel flexible membrane boundary method based on color function in DEM simulations for triaxial tests of granular materials 基于颜色函数的柔性膜边界方法在颗粒材料三轴试验DEM模拟中的应用

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-23 DOI: 10.1016/j.compgeo.2025.107657

Hongze Li , Chun Feng , J.L. Feng

引用次数: 0

Physics-informed neural network modeling of one-dimensional wave propagation under broadband and long-duration incident waves 宽频长时长的入射波下一维波传播的物理信息神经网络建模

IF 6.2 1区工程技术

Computers and Geotechnics Pub Date : 2025-09-23 DOI: 10.1016/j.compgeo.2025.107652

Hamid Taghavi Ganji, Elnaz Seylabi

{"title":"Physics-informed neural network modeling of one-dimensional wave propagation under broadband and long-duration incident waves","authors":"Hamid Taghavi Ganji, Elnaz Seylabi","doi":"10.1016/j.compgeo.2025.107652","DOIUrl":"10.1016/j.compgeo.2025.107652","url":null,"abstract":"<div><div>This paper presents a physics-informed neural network (PINN) to model one-dimensional wave propagation in visco-elastic media for seismic site response analysis. Dimensionless relations are introduced to effectively scale the loss terms associated with the wave equation, as well as initial and boundary conditions, during PINN training. Several problem settings with varying complexities demonstrate the effectiveness of the proposed approach compared to the standard (vanilla) PINN and those enhanced with self-adaptive weighting and Fourier feature strategies for handling broadband frequency wave propagation problems with real-world mechanical properties. The results show the dimensionless PINN has less than 9% normalized error in all cases, while the other variants had at least 40% error. Additionally, we present how sequential transfer learning over short intervals can be used to reduce the number of iterations required for the same problem by half, where new boundary conditions are applied to the system. This approach, combined with spatial domain decomposition, can enhance the prediction accuracy of wave responses in layered media subjected to long-duration incident waves, such as earthquake ground motions.</div></div>","PeriodicalId":55217,"journal":{"name":"Computers and Geotechnics","volume":"189 ","pages":"Article 107652"},"PeriodicalIF":6.2,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0