Acta Geotechnica最新文献_第5页

Numerical simulation of segment floating in shield tunnel construction using coupled IBM–FVM 基于IBM-FVM耦合的盾构隧道施工管片浮力数值模拟

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-09 DOI: 10.1007/s11440-025-02673-0

Xiaolong Li, Pengchao Li, Jiaxiang Wang, Fuming Wang, Jinhua Hu, Yanhui Zhong, Xingguo Yu

{"title":"Numerical simulation of segment floating in shield tunnel construction using coupled IBM–FVM","authors":"Xiaolong Li, Pengchao Li, Jiaxiang Wang, Fuming Wang, Jinhua Hu, Yanhui Zhong, Xingguo Yu","doi":"10.1007/s11440-025-02673-0","DOIUrl":"10.1007/s11440-025-02673-0","url":null,"abstract":"<div><p>Segment floating, often induced by simultaneous grouting during shield tunnel construction, poses significant challenges. This paper introduces a novel fluid–solid interaction (FSI) numerical method that integrates the immersed boundary method (IBM) and finite volume method (FVM) to simulate the buoyancy-driven floating of segments in shield tunneling accurately. The IBM effectively models the interaction between the segment and the slurry, while the governing equations are discretized using the FVM on a uniform orthogonal collocated grid. The proposed method was validated using field data from two engineering cases. For Hangzhou Metro Line 7, the relative errors between the simulated and measured segment floating displacements at critical time intervals (2–10 h) were within ± 0.2%. For the Sofia Tunnel, the average absolute errors between the simulated and measured slurry pressures were 0.01–0.07 bar at the selected monitoring points and times. These results confirm the accuracy of the method in simulating rapid segment floating dynamics and real-time slurry flow behavior during shield tunnel construction. By emphasizing the key role of the FSI in addressing the complex interactions between the fluid and solid phases, this study advances the simulation of segment floating during shield tunnel construction.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 8","pages":"4311 - 4328"},"PeriodicalIF":5.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163867","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

Liquefaction behavior of fiber-reinforced calcareous sand under cyclic simple shear tests 循环单剪试验下纤维增强钙质砂的液化特性

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-09 DOI: 10.1007/s11440-025-02671-2

Bo-Wen Kong, Huan He, Yun-Tian Yan, Zhi Ding, Bao-ping Zou

{"title":"Liquefaction behavior of fiber-reinforced calcareous sand under cyclic simple shear tests","authors":"Bo-Wen Kong, Huan He, Yun-Tian Yan, Zhi Ding, Bao-ping Zou","doi":"10.1007/s11440-025-02671-2","DOIUrl":"10.1007/s11440-025-02671-2","url":null,"abstract":"<div><p>Fiber-reinforcement presents a promising approach to mitigate the liquefaction issues commonly associated with calcareous sand as a construction fill material. However, the essential feasibility in the liquefaction resistance provided by fiber inclusion in calcareous sand still require thorough evaluation. In light of this, this paper presented an experimental study on the cyclic behavior of calcareous sand through a series of unidirectional undrained simple shear tests. The effects of fiber content, fiber length, and cyclic stress ratio (<i>CSR</i>) on the liquefaction resistance of fiber-reinforced calcareous sand were studied. The results indicate that incorporating fibers significantly boosts the liquefaction resistance of calcareous sand, and longer fibers further enhance the resistance by more effectively interlocking with sand particles. While increased cyclic stress ratio reduces liquefaction resistance, fibers can slow the rate of shear strain development when the <i>CSR</i> is low. Additionally, fiber inclusion helps mitigate stiffness degradation, although a high cyclic stress ratio accelerates the degradation. Based on experimental data, a suitable fiber content and fiber length for practical design was suggested. Furthermore, a pore pressure prediction model considering the effects of fiber content and <i>CSR</i> was developed, which can effectively predict the development of pore pressure in fiber-reinforced calcareous sand under a variety of engineering construction situations.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 10","pages":"5139 - 5158"},"PeriodicalIF":5.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184189","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

Effect of suffosion on deterioration of weathered granite soil: a multi-scale study from macroscopic to microscopic investigations 浸渍对风化花岗岩土劣化的影响：从宏观到微观的多尺度研究

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-08 DOI: 10.1007/s11440-025-02638-3

Ruiling Jia, Yi Shan, Kezheng Yang, Yizhao Wang, Zheng Hu, Yadong Li, Jie Cui

{"title":"Effect of suffosion on deterioration of weathered granite soil: a multi-scale study from macroscopic to microscopic investigations","authors":"Ruiling Jia, Yi Shan, Kezheng Yang, Yizhao Wang, Zheng Hu, Yadong Li, Jie Cui","doi":"10.1007/s11440-025-02638-3","DOIUrl":"10.1007/s11440-025-02638-3","url":null,"abstract":"<div><p>Weathered granite soil (WGS) is highly water-sensitive and widely distributed across southern China, where the region’s rainy climate contributes to geological hazards such as collapsing erosion, landslides, and ground subsidence. This study aims to elucidate the impact of this rainy climate on the deterioration of WGS by investigating the suffosion characteristics of granite residual soil (GRS) and completely weathered granite (CWG) at various stages of weathering. The research explores how suffosion affects their mechanical properties and microstructural features. A series of suffosion tests were conducted under controlled water pressure, followed by one-dimensional consolidation tests, cyclic triaxial tests, scanning electron microscopy, X-ray diffraction, and X-ray fluorescence analyses to analyze the deterioration mechanisms at both macro- and micro-scales. The results show that suffosion leads to the loss of fine particles and overall settlement of the soil samples. Microscopically, Mica is almost entirely lost, iron cementation is disrupted, and clay minerals, along with quartz and feldspar debris, are eroded, causing microstructural damage. The loss of minerals at the micro-scale exacerbates the formation of pores and cracks, increasing WGS porosity and promoting the progression of suffosion. On the macro-scale, suffosion alters the physical properties of WGS, with fine particle migration and loss leading to soil skeleton deformation, reduced stiffness, and decreased compressibility. Furthermore, a suffosion index is proposed, correlating microstructural changes with macroscopic mechanical parameters. This study has practical and theoretical significance for slope stability, collapsing erosion prevention, and surface subsidence mitigation in WGS in southern China.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 8","pages":"4213 - 4229"},"PeriodicalIF":5.7,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163162","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

Uniaxial compression characteristics of frozen soil–rock mixture 冻土-岩石混合体的单轴压缩特性

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-07 DOI: 10.1007/s11440-025-02672-1

Junlin Zhao, Pei Zhang, Qianqian Li, Liyun Peng, Jilin Qi

{"title":"Uniaxial compression characteristics of frozen soil–rock mixture","authors":"Junlin Zhao, Pei Zhang, Qianqian Li, Liyun Peng, Jilin Qi","doi":"10.1007/s11440-025-02672-1","DOIUrl":"10.1007/s11440-025-02672-1","url":null,"abstract":"<div><p>In the construction of cold region engineering and artificial freezing engineering, soil–rock mixture (SRM) is a frequently encountered geomaterial. Understanding the mechanical properties of frozen SRM is crucial for ensuring construction safety. In this paper, frozen SRM is considered as a multiphase material consisting of a soil matrix and rock. By employing a single-variable approach, the relationship between UCS and rock content was revealed, and the effects of rock content on the stress–strain curve shape and failure mode were analyzed. The test results indicate that rock content significantly influences the stress–strain curve and failure mode of SRM. The specimen preparation with different rock content is unified using a given relative compactness. The uniaxial compressive strength (UCS) of the frozen specimens increases firstly and then decreases as rock content increases, which is unaffected by temperature or rock size. The classic quadratic polynomial is suggested to describe the variation rule. The failure modes of specimens with low, medium and high rock content correspond to shear failure, bulge failure and splitting failures, respectively, which transmits from shear failure to splitting failure as the rock content increases.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 9","pages":"4671 - 4684"},"PeriodicalIF":5.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868768","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

An investigation of single-particle fracture behavior of calcareous nodule using an improved block-based model 基于改进块体模型的钙质结核单颗粒断裂行为研究

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-07 DOI: 10.1007/s11440-025-02675-y

Tao Zhang, Baosheng Wang, Weihao Yang, Yuan Gao, Changjiang Wu

{"title":"An investigation of single-particle fracture behavior of calcareous nodule using an improved block-based model","authors":"Tao Zhang, Baosheng Wang, Weihao Yang, Yuan Gao, Changjiang Wu","doi":"10.1007/s11440-025-02675-y","DOIUrl":"10.1007/s11440-025-02675-y","url":null,"abstract":"<div><p>An improved block-based model (BBM) combined with Voronoi tessellation to consider the particle outline and mineral composition is proposed to investigate the mechanical and microscopic fracture behavior of calcareous nodules. First, the single-particle crushing tests were conducted on calcareous nodules to investigate the macro mechanical properties. Then, the procedure to build a 3D BBM by incorporating polyhedral cells into the discrete element method (DEM) was introduced, and a sensitivity analysis on cell size was discussed as a part of preparation for reconstructing the calcareous nodule model. Microparameter calibration was performed to match the macro failure strength observed in experiments. It is shown that crack types are mainly tension cracks that are parallel or subparallel to the loading direction during the whole loading. The load-induced microcracks mainly appear at particle boundaries, followed by the intra-granular microcracks including calcite, quartz, and albite. Mineral morphology has a clear effect on the failure strength, that is, higher values of cell sphericity result in a larger failure strength. This study provides an effective method for simulating single-particle breakage of calcareous nodules in the BBM. </p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 9","pages":"4887 - 4906"},"PeriodicalIF":5.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868769","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

Constrained study of nanoindentation-based upscaling of mechanical properties of shales 基于纳米压痕的页岩力学性能提升约束研究

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-07 DOI: 10.1007/s11440-025-02663-2

Wangxing Cheng, Guanglei Cui, Derek Elsworth, Yuling Tan, Zhejun Pan, Yingjie Guo, Yu Zhang

{"title":"Constrained study of nanoindentation-based upscaling of mechanical properties of shales","authors":"Wangxing Cheng, Guanglei Cui, Derek Elsworth, Yuling Tan, Zhejun Pan, Yingjie Guo, Yu Zhang","doi":"10.1007/s11440-025-02663-2","DOIUrl":"10.1007/s11440-025-02663-2","url":null,"abstract":"<div><p>Shale gas reservoirs are both heterogeneous and multi-mineralic at microscale, potentially including as many as 10 mineral phases. Mechanical interactions among these different minerals significantly impact gas flow characteristics in matrix and fractures and additionally require transformation to macroscale. We use complementary nanoindentation and triaxial deformation experiments to determine the viscoplastic behavior of the Longmaxi shale at both microscopic and macroscopic scales—and link the two. The distribution of the diverse and heterogeneous mineral microstructure was facilitated by a Tescan integrated mineral analyzer (TIMA). A multi-distance clustering method was used to autonomously differentiate the extensive measured data into mineral groups, with proportions consistent with the XRD results. Pyrite exhibits the highest deformation and creep moduli, followed by dolomite, calcite, quartz then clay. A modified Mori–Tanaka method is applied to upscale the micromechanical properties to macroscale, with results revealing only a minor deviation from the triaxial test. Moreover, a positive correlation was observed between the deformation and creep moduli. The shale reservoir exhibits elastic anisotropy at both micro- and macroscales. Notably, the macroscopic anisotropy ratio is greater than its microscopic counterpart, indicating an increase in anisotropy with an increase in length scale. These findings offer new insights into the mechanical characterization of shale, providing a more comprehensive understanding of its behavior across different scales.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 9","pages":"4515 - 4533"},"PeriodicalIF":5.7,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868785","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 method for estimating peak and critical state friction angles of sand based on cone penetration tests 基于锥突试验的砂土峰值和临界状态摩擦角估算方法

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-06 DOI: 10.1007/s11440-025-02677-w

Donggun Nam, Junhwan Lee

{"title":"A method for estimating peak and critical state friction angles of sand based on cone penetration tests","authors":"Donggun Nam, Junhwan Lee","doi":"10.1007/s11440-025-02677-w","DOIUrl":"10.1007/s11440-025-02677-w","url":null,"abstract":"<div><p>In this study, a new method for estimating the shear strength of sand based on the cone penetration test (CPT) results is proposed. Key motivation was to utilize CPT results from vertical and inclined penetration conditions, aiming at eliminating the stress normalization process required in traditional methods, to further enhance the reliability of strength estimation. Both the critical state <span>(left( {phi_{c}^{prime } } right))</span> and peak <span>(left( {phi_{p}^{prime } } right))</span> friction angles were considered in the proposed method. To establish prediction models for <span>(phi_{c}^{prime })</span> and <span>(phi_{p}^{prime })</span>, the correlative relationship between the cone resistance (<span>(q_{c})</span>) and the coefficient of lateral earth pressure at rest (K<sub>0</sub>) was introduced, where the ratio of vertical to inclined cone resistances was utilized. The proposed prediction models for <span>(phi_{c}^{prime })</span> and <span>(phi_{p}^{prime })</span> utilize the penetration resistance ratio enabling the direct estimation of strength parameters without additional experimental process for in-situ stress input. Such novelty of the proposed method leads to simplified and optimized strength estimation process at reduced time and cost. The proposed method was validated through results from centrifuge tests and coupled Eulerian–Lagrangian finite element simulations, which confirmed the accuracy and field applicability. Results were compared with those from other existing methods, which showed that the proposed method produced improved prediction.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 10","pages":"5027 - 5042"},"PeriodicalIF":5.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184197","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

Influence of drainage conditions and monotonic preloadings on the monotonic behavior of Karlsruhe fine sand 排水条件和单调预压对卡尔斯鲁厄细砂单调特性的影响

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-06 DOI: 10.1007/s11440-025-02599-7

N. Irani, J. Duque, M. Tafili, D. Mašín, T. Wichtmann

{"title":"Influence of drainage conditions and monotonic preloadings on the monotonic behavior of Karlsruhe fine sand","authors":"N. Irani, J. Duque, M. Tafili, D. Mašín, T. Wichtmann","doi":"10.1007/s11440-025-02599-7","DOIUrl":"10.1007/s11440-025-02599-7","url":null,"abstract":"<div><p>This article presents the results of an experimental program aimed at evaluating the difference between undrained and drained maximum mobilized friction angles at identical initial densities and initial mean effective stress states, as well as the influence of monotonic preloadings on the monotonic behavior of Karlsruhe fine sand. For this purpose, a series of monotonic triaxial tests was performed considering different initial densities, preloading types and drainage conditions, such as drained, undrained and combinations of these within the same test. The experimental results suggest that under triaxial conditions, the drained maximum mobilized friction angle is up to <span>(10^{circ })</span> larger than the corresponding undrained maximum mobilized friction angle. Furthermore, the results reveal that monotonic drained preloadings lead to significant differences in the subsequent undrained monotonic response. The capabilities of two advanced constitutive models for sands to reproduce the experimental observations were evaluated. With this aim, the models were calibrated using conventional monotonic and cyclic triaxial tests. Without any parameter adjustments, the model predictions were then inspected for samples subjected to monotonic preloading or shearing under different drainage conditions.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 9","pages":"4369 - 4383"},"PeriodicalIF":5.7,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11440-025-02599-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868841","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

Kinematic responses of pipe piles considering the effects of soil plugs and underlying strata subjected to P-waves p波作用下考虑土塞和下垫层影响的管桩运动响应

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-04 DOI: 10.1007/s11440-025-02648-1

Shiping Zhang, Mingyue Zhu, Can Shi, Shicheng Li, Lin Ma, Zhenning Shi

{"title":"Kinematic responses of pipe piles considering the effects of soil plugs and underlying strata subjected to P-waves","authors":"Shiping Zhang, Mingyue Zhu, Can Shi, Shicheng Li, Lin Ma, Zhenning Shi","doi":"10.1007/s11440-025-02648-1","DOIUrl":"10.1007/s11440-025-02648-1","url":null,"abstract":"<div><p>An innovative semi-analytical approach is devised to evaluate the dynamic characteristic of a friction-type pipe pile partially packed with soil plugs, subjected to time-harmonic seismic P-waves in a homogeneous soil medium. In this model, the shaft is conceptualized as a hollow structure with inner soil acting as continuum. The soil beneath the pile's vertical projection is viewed as a distinct soil pillar, while the surrounding soil and the column are collectively modeled as a uniform continuum. By examining the energy interactions between the inner soil and the pile-soil system and leveraging the Hamilton’s variational principle, the governing equations for both the shaft and the soil pillar, along with the interface contact requirements, are established. The attenuation characteristics of the surrounding soil are also derived. The solution employs variable separation techniques and an iteration methodology to resolve the coupled equations, satisfying the pile-soil system’s boundary and continuity constraints. This leads to a frequency-domain semi-analytical formulation for the seismic responses of the system. The accuracy of the developed solution is substantiated by comparing it with established results. Subsequently, numerical analyses are conducted to explore how varying material and geometric parameters impact the seismic interactions between the pile and soil.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 9","pages":"4467 - 4481"},"PeriodicalIF":5.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868840","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

Determination of finite-strain consolidation properties from one-dimensional CRD testing 一维CRD试验有限应变固结特性的测定

IF 5.7 1区工程技术

Acta Geotechnica Pub Date : 2025-06-04 DOI: 10.1007/s11440-025-02644-5

Weiyu Wang, Guohui Lei, Meng Cui, Shengming Hu

{"title":"Determination of finite-strain consolidation properties from one-dimensional CRD testing","authors":"Weiyu Wang, Guohui Lei, Meng Cui, Shengming Hu","doi":"10.1007/s11440-025-02644-5","DOIUrl":"10.1007/s11440-025-02644-5","url":null,"abstract":"<div><p>A review of five national standards for one-dimensional constant rate of displacement (CRD) consolidation tests reveals remarkable inconsistencies in the formulas used for determining the consolidation properties of soils under large deformations. The determination of finite-strain consolidation properties requires a large deformation consolidation analysis, and vice versa. To meet this requirement, natural strain and effective stress, which are work-conjugate pairs in the Eulerian framework, are selected to model the large deformation behavior of soils subjected to CRD testing. A simplified analytical model is built based on the assumption that the natural strain profile is parabolic. With this model, formulas are derived for determining the hydraulic conductivity, the coefficient of volume compressibility, and the coefficient of consolidation. A generalized numerical model is established by solving a normalized governing equation under known moving boundary conditions with a finite difference scheme, which uses an adaptive grid deformation technique to eliminate the convective term present in the material time derivative. The simplified analytical model is verified against the generalized numerical model. The parabolic natural strain profile assumption is shown to be valid for tests performed at normalized displacement rates less than 0.1, with an acceptable (≥ 99%) accuracy after a soil specimen is deformed to an engineering strain of 3.83%. CRD and incremental loading consolidation tests and permeability tests are carried out and used to validate the proposed formulas. The results show good agreement. However, disagreement is observed when the formulas in the standards are used to determine the consolidation properties, and the degree of disagreement increases with increasing soil deformation. This finding further justifies the necessity of the proposed formulas for determining finite-strain consolidation properties from CRD consolidation tests.</p></div>","PeriodicalId":49308,"journal":{"name":"Acta Geotechnica","volume":"20 9","pages":"4483 - 4502"},"PeriodicalIF":5.7,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868839","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