Acta Geotechnica最新文献

Three-dimensional peridynamics modeling of rock cutting considering disc cutter rolling motion

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-03-13 DOI: 10.1007/s11440-025-02595-x

Xiaonan Shang, Jian Zhou, Fushen Liu, Yicheng Jiang, Xingchuan Liao

引用次数: 0

THM-modelling benchmark initiative on the effects of temperature on the disposal of heat-generating radioactive waste in clay formations

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-02-25 DOI: 10.1007/s11440-024-02502-w

Eric Simo, Christophe de Lesquen, Rocio Paola Leon-Vargas, Minh-ngoc Vu, Simon Raude, Ginger El Tabbal, Arnaud Dizier, Suresh Seetharam, Asta Narkuniene, Frédéric Collin, Hangbiao Song, Antonio Gens, Fei Song, Alexandru-Bogdan Tatomir, Thomas Nagel, Jörg Buchwald

{"title":"THM-modelling benchmark initiative on the effects of temperature on the disposal of heat-generating radioactive waste in clay formations","authors":"Eric Simo, Christophe de Lesquen, Rocio Paola Leon-Vargas, Minh-ngoc Vu, Simon Raude, Ginger El Tabbal, Arnaud Dizier, Suresh Seetharam, Asta Narkuniene, Frédéric Collin, Hangbiao Song, Antonio Gens, Fei Song, Alexandru-Bogdan Tatomir, Thomas Nagel, Jörg Buchwald","doi":"10.1007/s11440-024-02502-w","DOIUrl":"10.1007/s11440-024-02502-w","url":null,"abstract":"<div><p>Understanding the thermo-hydro-mechanical (THM) behaviour of clay formations, which are being considered as potential hosts for the disposal of radioactive waste in Europe, is important for the feasibility and the safe disposal of heat-generating radioactive waste in deep geological clayey formations. To ensure the reliability of numerical models and tools used to predict the THM evolution of such systems over long periods of time, it is necessary to verify and validate these tools through benchmarking initiatives. As part of the joint European Programme on Radioactive Waste Management (EURAD), the Influence of Temperature on Clay-based Material Behaviour (HITEC) work package invited seven teams from across Europe to participate in a benchmark initiative to assess the expertise and capabilities of these teams and their numerical tools to predict THM evolution in different clay materials. The results of this benchmark showed that all teams involved were able to adequately model the THM behaviour of heat-generating repository systems in clay formations, and the tools they used can be considered verified for the solution of coupled THM equations under variable boundary conditions relevant for nuclear waste disposal.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 4","pages":"1621 - 1642"},"PeriodicalIF":5.6,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11440-024-02502-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling the evolutionary stiffness of granular bentonite mixtures

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-02-25 DOI: 10.1007/s11440-025-02561-7

Vicente Navarro, Erik Tengblad, Rubén López-Vizcaíno, Joel Torres-Serra, Laura Asensio

{"title":"Modelling the evolutionary stiffness of granular bentonite mixtures","authors":"Vicente Navarro, Erik Tengblad, Rubén López-Vizcaíno, Joel Torres-Serra, Laura Asensio","doi":"10.1007/s11440-025-02561-7","DOIUrl":"10.1007/s11440-025-02561-7","url":null,"abstract":"<div><p>The multimodal and evolutive pore size distribution of granular bentonite mixtures makes it advisable to adopt a triple porosity approach for the macroscopic modelling of their hydromechanical behaviour under different water content conditions. These models must integrate the evolutive effect of compressibility of the megapores between the bentonite grains on the overall stiffness of the mixture. This work proposes a strategy for this integration which, while assuming a constant compressibility of the megaporosity, allows an evolutionary expression for the overall stiffness of the mixture to be obtained. To evaluate the scope of this proposal, the hydration of two mixtures with very different initial packing is analysed. Both analyses start from dry conditions (89 MPa suction) and end in full saturation. Therefore, their analysis requires modelling the behaviour of the granular bentonite mixture for the whole range of structural organisation it can have. It is therefore a very demanding qualification exercise in which, despite the simplicity of the proposed formulation, very satisfactory results have been obtained.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 4","pages":"1959 - 1968"},"PeriodicalIF":5.6,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11440-025-02561-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel three-dimensional mechanical model for rotary cutting in soil considering wear status and its experimental verification

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-02-11 DOI: 10.1007/s11440-025-02549-3

Xiang Shen, Dajun Yuan, Jun Wu, Tong Qiu, Xiangsheng Chen, Dalong Jin, Jiuqi Wu

{"title":"A novel three-dimensional mechanical model for rotary cutting in soil considering wear status and its experimental verification","authors":"Xiang Shen, Dajun Yuan, Jun Wu, Tong Qiu, Xiangsheng Chen, Dalong Jin, Jiuqi Wu","doi":"10.1007/s11440-025-02549-3","DOIUrl":"10.1007/s11440-025-02549-3","url":null,"abstract":"<div><p>Cutter is the main cutting tool for shield tunneling in soft soil, so the mechanism of cutter cutting soil is the basis of efficient shield tunneling. This paper proposes a model for revealing the cutting mechanics of shield cutter in soft soil considering the effect of wear. A new analytical method for calculating the cutter force, which can be used in soft soil, was established based on the theory of Rankine's passive earth pressure. The model is composed of three parts: a central failure zone and two side failure zones. To verify the proposed method, an indoor cutter wear test system was independently developed, and the test results show that the proposed model is more in line with the real cutting state compared with the Mckyes–Ali model. Parametric analysis indicates that the parameters associated with the cutter (width, front angle, blade angle, and cutting depth) have important influences on the cutter force and the cutting ability. The results also show that the cutter front angle and blade angle both have a significant impact on the cutter force and the cutting ability. In practical applications, it is essential to strike a balance between the decreased cutting ability of the cutters and the overall improvement in shield tunneling efficiency.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 4","pages":"1661 - 1679"},"PeriodicalIF":5.6,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716952","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 fully resolved SPH-DEM for simulation of debris flows with arbitrary particle shapes impacting flexible barriers

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-02-10 DOI: 10.1007/s11440-025-02544-8

Hao Xiong, Mengjie Hao, Debo Zhao, Xiaoxuan Gan, Zhen-Yu Yin, Xiangsheng Chen

{"title":"A fully resolved SPH-DEM for simulation of debris flows with arbitrary particle shapes impacting flexible barriers","authors":"Hao Xiong, Mengjie Hao, Debo Zhao, Xiaoxuan Gan, Zhen-Yu Yin, Xiangsheng Chen","doi":"10.1007/s11440-025-02544-8","DOIUrl":"10.1007/s11440-025-02544-8","url":null,"abstract":"<div><p>This study presents a fully resolved numerical method coupling framework for capturing the interaction between debris flows and flexible barriers. The proposed coupling method combines a simplified flexible wire representation, smoothed particle hydrodynamics (SPH), and discrete element method (DEM). Specifically, the flexible wire representation is used to represent a flexible barrier that intercepts debris flows. The coupled SPH-DEM simulates a two-phase debris flow containing arbitrarily shaped boulders. Additionally, a modified dynamic boundary method (mDBC) is employed to couple SPH with DEM. These three methods are strongly coupled to simulate the behavior of boulders in debris flows and improve the efficiency and accuracy of the interaction between flexible barriers and debris flows. The proposed coupling framework is evaluated through a series of verification instances, which are consistent with experimental observations. Subsequently, the impact dynamics of the two-phase debris flow on the flexible barrier is modeled and analyzed. Overall, the framework holds great potential for the design and optimization of flexible barriers for debris flow mitigation in engineering practice.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 3","pages":"1403 - 1430"},"PeriodicalIF":5.6,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571021","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

Study on bearing characteristic of long-short-pile composite foundation with biocemented coral sand pile

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-01-27 DOI: 10.1007/s11440-025-02552-8

Xiangwei Fang, Chunni Shen, Hanlong Liu, Chunyan Wang, Yuxi Guo, Peixi Xiong, Luqi Wang

{"title":"Study on bearing characteristic of long-short-pile composite foundation with biocemented coral sand pile","authors":"Xiangwei Fang, Chunni Shen, Hanlong Liu, Chunyan Wang, Yuxi Guo, Peixi Xiong, Luqi Wang","doi":"10.1007/s11440-025-02552-8","DOIUrl":"10.1007/s11440-025-02552-8","url":null,"abstract":"<div><p>Stabilizing coral sand foundations presents a considerable challenge in marine and island engineering due to its unique properties. To address the construction demands of \"green engineering, ecological islands\", this study introduced a novel foundation treatment technology known as the biocemented coral sand pile (BCS pile) composite foundation, which utilized microbially induced carbonate precipitation (MICP) technology as a sustainable alternative to traditional industrial cement. Considering that the combination of long and short piles represents the most economical structural configuration for multi-pile composite foundation, a series of model tests were conducted on the long-short BCS pile composite foundation. The results indicate that the long-short BCS pile composite foundations exhibited a significant improvement in bearing capacity compared to the untreated foundation, thereby validating the feasibility of employing biomineralization for foundation treatment. Additionally, the findings reveal that the load proportion carried by long BCS piles is greater than that of short BCS piles. Moreover, as the cushion layer thickness increased, a higher load proportion was supported by the surrounding sand, leading to a lower pile-soil stress ratio, a diminished load-sharing rate of the BCS piles, and a higher utilization coefficient of bearing capacity. This study demonstrates the potential usage of BCS pile composite foundation in coral sand sites, which is expected to provide valuable guidance for further research and practical applications.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 4","pages":"1947 - 1957"},"PeriodicalIF":5.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716652","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

Response to Comment on “Undrained shear strength prediction of clays using liquidity index”

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-01-27 DOI: 10.1007/s11440-025-02540-y

Qiusheng Wang, Songnan Qiu, Hong Zheng, Ruitao Zhang

引用次数: 0

Efficient automatic estimation of soil constitutive model parameters via particle swarm optimization

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-01-23 DOI: 10.1007/s11440-024-02454-1

Takayuki Sakai, Masaki Nakano

{"title":"Efficient automatic estimation of soil constitutive model parameters via particle swarm optimization","authors":"Takayuki Sakai, Masaki Nakano","doi":"10.1007/s11440-024-02454-1","DOIUrl":"10.1007/s11440-024-02454-1","url":null,"abstract":"<div><p>In this study, we automatically estimated the parameters of the modified Cam-Clay model, a representative constitutive model for soil. The estimation was carried out by minimizing the objective function using the dynamic multiswarm particle swarm optimization (DMS-PSO) algorithm, which is an improvement over the original PSO. The objective function was newly defined by quantifying the discrepancy between the targeted results and the model calculations in <i>q</i>-<i>p</i>′-<i>v</i> space. DMS-PSO divides particles into several islands to search globally and prevent local solutions, and even particles that fall into a local solution can be relocated. To evaluate the automatic estimation performance of DMS-PSO, we examined whether model parameters could be correctly estimated from the calculation results (Consideration (1)) and whether the DMS-PSO algorithm could consistently obtain the same parameter values when reproducing the experimental results (Consideration (2)). Regarding Consideration (1), the objective function was consistently smaller than 1.0 × 10<sup>–6</sup> when the number of particles was greater than 400 and the number of islands was greater than 40. At this time, the parameter values could be estimated to the fifth decimal place. When two experiments were conducted, the estimation was obtained approximately 1.5 times faster than when only one was conducted. Regarding Consideration (2), the coefficient of variation of the parameters obtained from 100 estimations was at most 1%, and the parameter values were estimated to be approximately the same each time. In addition, narrowing the solution search range based on soil physical properties could reduce the variation in parameters by approximately 10%. Additionally, the parameters could be accurately estimated by data from at least two mechanical experiments.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 3","pages":"1001 - 1017"},"PeriodicalIF":5.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11440-024-02454-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A coupled hydro-mechanical field-enriched finite element method for simulating the hydraulic fracture process of rocks subjected to in situ stresses

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-01-22 DOI: 10.1007/s11440-024-02518-2

Linyuan Han, Xiaoping Zhou

{"title":"A coupled hydro-mechanical field-enriched finite element method for simulating the hydraulic fracture process of rocks subjected to in situ stresses","authors":"Linyuan Han, Xiaoping Zhou","doi":"10.1007/s11440-024-02518-2","DOIUrl":"10.1007/s11440-024-02518-2","url":null,"abstract":"<div><p>A coupled hydro-mechanical field-enriched finite element method (HM-FE-FEM) is developed for simulating the hydraulic fracture process of rocks subjected to in situ stresses. The staggered iterative scheme based on the Newton–Raphson iterative algorithm is utilized to address the coupled hydro-mechanical problems. The opening process of the hydraulic fracture and natural fracture subjected to in situ stresses can be reproduced by the proposed method. The accuracy of the proposed method is verified through stress intensity factor, fracture opening and experiment results. For coalescence patterns between hydraulic and natural fractures, the influences of horizontal stress difference and intersection angle are analyzed and discussed. Additionally, for coalescence patterns between hydraulic fracture and natural karst caves, the influences of cave location, cave radius and horizontal stress difference are investigated and discussed. The numerical results illustrate the effectiveness of HM-FE-FEM in handling the complex coalescence behaviors in the hydraulic fracture process of underground rock reservoirs with different defects. This study has a certain guiding significance for optimizing the fracturing operation parameters.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 3","pages":"1315 - 1339"},"PeriodicalIF":5.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570922","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

Field and 3D numerical investigation on bearing characteristics of the long-core SDCM piles under vertical load in sandy soil

IF 5.6 1区工程技术

Acta Geotechnica Pub Date : 2025-01-17 DOI: 10.1007/s11440-025-02533-x

Zhiyu Gong, Guoliang Dai, Weiwei Xu, Xinsheng Chen, Hongbo Liu

{"title":"Field and 3D numerical investigation on bearing characteristics of the long-core SDCM piles under vertical load in sandy soil","authors":"Zhiyu Gong, Guoliang Dai, Weiwei Xu, Xinsheng Chen, Hongbo Liu","doi":"10.1007/s11440-025-02533-x","DOIUrl":"10.1007/s11440-025-02533-x","url":null,"abstract":"<div><p>The stiffened deep cement mixing (SDCM) pile is a new composite pile type, which is a stiffened core inserted into the cemented soil, compared to the DCM pile structure. The SDCM pile not only combines the advantages of DCM piles, but also improves the corresponding bearing capacity<b>.</b> In this paper, the bearing characteristics (the ultimate bearing capacity, the pile end resistance and the pile side friction) of PHC pipe pile and the long-core SDCM piles with number of different piles are investigated through field tests. The ultimate bearing capacities of PHC pipe pile, the long-core SDCM pile and the double long-core SDCM pile are 5.82, 8.23 and 14.67 MN. Combined with finite element analysis, it was found that the long-core SDCM pile is a friction pile in sandy soil, the cemented soil can provide lateral friction resistance and its role in bearing the vertical load is cannot be ignored. Parametric analyses were carried out for parameters: the length ratio of the cemented soil and PHC pipe pile (<i>L</i><sub>C</sub>/<i>L</i><sub>P</sub>), the radius ratio of the cemented soil and PHC pipe pile (<i>R</i><sub>C</sub>/<i>R</i><sub>P</sub>) and the modulus of elasticity of PHC pipe pile (<i>E</i><sub>P</sub>) on the long-core SDCM pile with the objective of ultimate bearing capacity. The ultimate bearing capacity will be increased with increasing in <i>L</i><sub>C</sub>/<i>L</i><sub>P</sub> and <i>R</i><sub>C</sub>/<i>R</i><sub>P</sub>, and changes in <i>E</i><sub>P</sub> will not affect the ultimate bearing capacity. Finally, the bearing capacity equations of the long-core SDCM pile were adjusted with the results of the study.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 3","pages":"1341 - 1362"},"PeriodicalIF":5.6,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571156","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