Query：
学者姓名：阙云
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
The two-phase seepage fluid (i.e., air and water) behaviors in undisturbed granite residual soil (U-GRS) have not been comprehensively studied due to a lack of accurate and representative models of its internal pore structure. By leveraging X-ray computed tomography (CT) along with the lattice Boltzmann method (LBM) enhanced by the Shan–Chen model, this study simulates the impact of internal pore characteristics of U-GRS on the water–gas two-phase seepage flow behaviors. Our findings reveal that the fluid demonstrates a preference for larger and straighter channels for seepage, and as seepage progresses, the volume fraction of the water/gas phases exhibits an initial increase/decrease trend, eventually stabilizing. The results show the dependence of two-phase seepage velocity on porosity, while the local seepage velocity is influenced by the distribution and complexity of the pore structure. This emphasizes the need to consider pore distribution and connectivity when studying two-phase flow in undisturbed soil. It is observed that the residual gas phase persists within the pore space, primarily localized at the pore margins and dead spaces. Furthermore, the study identifies that hydrophobic walls repel adjacent fluids, thereby accelerating fluid movement, whereas hydrophilic walls attract fluids, inducing a viscous effect that decelerates fluid flow. Consequently, the two-phase flow rate is found to increase with then-enhanced hydrophobicity. The apex of the water-phase volume fraction is observed under hydrophobic wall conditions, reaching up to 96.40%, with the residual gas-phase constituting 3.60%. The hydrophilic wall retains more residual gas-phase volume fraction than the neutral wall, followed by the hydrophobic wall. Conclusively, the investigations using X-ray CT and LBM demonstrate that the pore structure characteristics and the wettability of the pore walls significantly influence the two-phase seepage process. © 2024 by the authors.
Keyword ：
Air Air Computerized tomography Computerized tomography Gases Gases Hydrophilicity Hydrophilicity Hydrophobicity Hydrophobicity Kinetic theory Kinetic theory Phase interfaces Phase interfaces Pore structure Pore structure Soils Soils Two phase flow Two phase flow Volume fraction Volume fraction Wetting Wetting
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jiang, Zhenliang , Lin, Yiqian , Chen, Xian et al. Simulating Two-Phase Seepage in Undisturbed Soil Based on Lattice Boltzmann Method and X-ray Computed Tomography Images [J]. | Sensors , 2024 , 24 (13) . |
| MLA | Jiang, Zhenliang et al. "Simulating Two-Phase Seepage in Undisturbed Soil Based on Lattice Boltzmann Method and X-ray Computed Tomography Images" . | Sensors 24 . 13 (2024) . |
| APA | Jiang, Zhenliang , Lin, Yiqian , Chen, Xian , Li, Shanghui , Cai, Peichen , Que, Yun . Simulating Two-Phase Seepage in Undisturbed Soil Based on Lattice Boltzmann Method and X-ray Computed Tomography Images . | Sensors , 2024 , 24 (13) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Mountainous regions are often characterized by the presence of V-shaped gullies, necessitating the construction of retaining structures to support the embankments spanning across these gullies. The gully topography renders conventional two-dimensional soil pressure calculation theory unable to meet the stability requirements for the design of retaining walls (RWs) in mountainous gullies. To address this issue, the sliding bodies of V-shaped gully retaining walls have been identified as high-wall type and low-wall type, and the spatial earth pressure of V-shaped RWs has been determined using the horizontal differential layer method. Combined with numerical simulation, a systematic parametric study is conducted to reveal the impact of the fill-soil internal friction angle, wall-soil contact surface roughness, wall height-to-width ratio, and valley side-slope angle on the active earth pressure acting on the wall. The magnitude of internal friction angle of the fill and the side-bank angle significantly influence the horizontal earth pressure. However, for RWs with finite length along their longitudinal direction, the active earth pressure value at the wall ends is significantly lower than values computed under two-dimensional plane-strain conditions. Moreover, the resultant active force point is located in the range of H/3-H/2 from the wall bottom, where H = wall height, which shows that considering three-dimensional effects is significant. © 2024 American Society of Civil Engineers.
Keyword ：
Spatial earth pressure Spatial earth pressure Translational mode Translational mode V-shaped retaining wall V-shaped retaining wall V-shaped valley V-shaped valley
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Que, Y. , Zhang, J. , Xie, Z. et al. Spatial Earth Pressure Analysis of V-Shaped Gully Shoulder Retaining Wall under Translational Mode [J]. | International Journal of Geomechanics , 2024 , 24 (10) . |
| MLA | Que, Y. et al. "Spatial Earth Pressure Analysis of V-Shaped Gully Shoulder Retaining Wall under Translational Mode" . | International Journal of Geomechanics 24 . 10 (2024) . |
| APA | Que, Y. , Zhang, J. , Xie, Z. , Chen, F. . Spatial Earth Pressure Analysis of V-Shaped Gully Shoulder Retaining Wall under Translational Mode . | International Journal of Geomechanics , 2024 , 24 (10) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
传统边坡稳定性分析方法仅对潜在滑动面进行整体稳定性评估，无法获取各点的安全系数.基于稳定系数场理论，综合考虑水-气耦合作用，对降雨条件下边坡稳定性进行分析.结果表明：1)稳定系数场法能够直观地体现水-气耦合作用下边坡的具体破坏区域，得到各点的安全系数；2)孔隙气压力对边坡降雨入渗有一定阻碍作用，并且随着降雨时间的推移阻渗效果愈明显，相同条件下降雨40 h时，两相流湿润锋深度较单向流减小了28.6%; 3)相同条件下，考虑水-气耦合作用将降低边坡稳定性，以降雨40 h为例，两相流边坡失稳面积约为单向流的1.7倍.因此，在实际工程中对边坡稳定性分析时考虑水-气耦合作用，工程偏于安全.
Keyword ：
土质边坡 土质边坡 水-气耦合 水-气耦合 湿润锋 湿润锋 灾害防治 灾害防治 稳定性 稳定性 稳定系数场 稳定系数场
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 姚晓琴 , 张豪杰 , 阙云 et al. 水-气耦合下的土质边坡稳定系数场分析 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (03) : 337-344 . |
| MLA | 姚晓琴 et al. "水-气耦合下的土质边坡稳定系数场分析" . | 福州大学学报(自然科学版) 52 . 03 (2024) : 337-344 . |
| APA | 姚晓琴 , 张豪杰 , 阙云 , 丁辉 , 许泽钦 , 何燕清 . 水-气耦合下的土质边坡稳定系数场分析 . | 福州大学学报(自然科学版) , 2024 , 52 (03) , 337-344 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为揭示降雨条件下大孔隙参数对斜坡水分非均匀运移与稳定性的影响，基于两域模型与稳定系数场原理，建立降雨入渗下斜坡非均匀渗流与稳定性求解模型，并借助COMSOL Multiphysics多物理场有限元平台，编制相应的模型求解程序，通过大孔隙土柱降雨试验验证数值模型的合理性，对比均匀流与非均匀流条件下斜坡体积含水率和点稳定系数，分析大孔隙参数（大孔隙占比ω_f、两域导水系数之比μ、大孔隙经验参数r_w）对斜坡渗流场及稳定系数场的影响规律。结果表明：相比不考虑大孔隙，考虑大孔隙时的基质域和大孔隙域表层体积含水率分别增长7.7%和降低5.1%，入渗深度分别增长83.3%和150.0%；边坡浅层失稳面积增大3.9%。基质域和大孔隙域入渗深度均随大孔隙占比ω_f的增大而减小；随着大孔隙域与基质域饱和渗透系数之比μ增大，两者入渗深度变化趋势相反，即μ越大，基质域入渗深度越小，大孔隙域反之；两者与经验参数r_w无显著关系。至降雨结束，基质域表层土体体积含水率已达最大值；大孔隙域则随着ω_f和μ的增大而增大，但几乎不受经验参数r_w的影响。非均匀流条件下，边坡水分交换沿着剖面从上往下分为负交换区、正交换区和无交换区，水分交换平衡深度与基质域入渗深度变化趋势一致；水分交换负交换区与正交换区的深度均存在一个峰值，并随大孔隙占比ω_f的增大而减小，随着μ和r_w的增大而增大。不同参数取值下，边坡均为浅层失稳破坏，ω_f和μ越大，失稳层深度越大，表层点稳定系数越小，因此大孔隙不利于边坡稳定。
Keyword ：
入渗深度 入渗深度 大孔隙参数 大孔隙参数 水分交换 水分交换 点稳定系数 点稳定系数 非均匀流 非均匀流
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 阙云 , 李尚辉 , 詹小军 et al. 大孔隙参数对斜坡非均匀渗流与稳定性的影响 [J]. | 工程科学与技术 , 2024 , 56 (03) : 122-133 . |
| MLA | 阙云 et al. "大孔隙参数对斜坡非均匀渗流与稳定性的影响" . | 工程科学与技术 56 . 03 (2024) : 122-133 . |
| APA | 阙云 , 李尚辉 , 詹小军 , 张吉松 , 薛斌 , 谢秀栋 . 大孔隙参数对斜坡非均匀渗流与稳定性的影响 . | 工程科学与技术 , 2024 , 56 (03) , 122-133 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为揭示移动荷载作用下公路隧道复合式路面结构力学响应，通过现场试验与有限元法相结合及模型精度验证的手段，基于响应面试验设计方法分析有仰拱和无仰拱的隧道复合式路面力学响应。结果表明，无论有仰拱，还是无仰拱，轴载对各项力学指标的影响最大，混凝土基层厚度对各项力学指标的影响较小，水平荷载对混凝土面板板底拉应力和沥青面层层间剪应力的影响较大、对沥青面层层底拉应变影响较小；无仰拱时围岩模量对各项力学指标的影响大于有仰拱；有仰拱时混凝土面层厚度对沥青面层层底拉应变的影响大于沥青面层厚度，混凝土面层厚度对沥青面层层间剪应力的影响大于基层厚度，无仰拱时影响相反；有仰拱隧道复合式路面结构轴载换算系数得到混凝土面层设计轴次是现行规范的1.8倍，无仰拱是1.3倍；有仰拱、无仰拱时混凝土面层疲劳寿命分别比设计轴载大17和8个数量级，沥青面层疲劳寿命均比设计轴载大1个数量级。研究结果可为隧道复合式路面结构设计研究提供参考。
Keyword ：
力学响应 力学响应 响应面 响应面 疲劳寿命 疲劳寿命 移动荷载 移动荷载 隧道复合式路面 隧道复合式路面
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 翁斌 , 张超 , 阙云 et al. 基于响应面法的隧道复合式路面力学响应分析 [J]. | 森林工程 , 2024 , 40 (02) : 176-187 . |
| MLA | 翁斌 et al. "基于响应面法的隧道复合式路面力学响应分析" . | 森林工程 40 . 02 (2024) : 176-187 . |
| APA | 翁斌 , 张超 , 阙云 , 章灿林 , 徐松 . 基于响应面法的隧道复合式路面力学响应分析 . | 森林工程 , 2024 , 40 (02) , 176-187 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为刻画原状土体内部孔隙细观渗流特征，选取东南沿海地区某地原状花岗岩残积土作为研究对象，基于计算机断层扫描(CT)和图像处理技术对2D/3D原状土体模型进行重构，并结合格子Boltzmann方法(LBM),通过自编程序模拟土体孔隙内水分渗流及分布情况.结果表明：孤立孔隙对渗流结果影响甚微，仅个别连通性好、孔径大且笔直的大孔隙会成为优势通道并产生优先流；渗流从开始至稳定过程中，最大流速主要出现在孔隙通道由宽变窄处，孔隙结构形态对渗流的影响较孔隙占比更为显著.基于工业CT扫描技术和LBM能较好刻画真实土体孔隙渗流特征，2D模型可更直观表现大孔隙优先流现象，适用于定性研究；3D模型更接近实际情况，可精确计算土体渗透率，适用于定量研究.
Keyword ：
CT扫描切片 CT扫描切片 优先流 优先流 原状花岗岩残积土 原状花岗岩残积土 大孔隙 大孔隙 格子玻尔兹曼 格子玻尔兹曼 细观渗流 细观渗流
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 阙云 , 陈宪 , 蒋国平 et al. 基于LBM的2D/3D原状花岗岩残积土细观渗流模拟 [J]. | 应用基础与工程科学学报 , 2024 , 32 (01) : 193-207 . |
| MLA | 阙云 et al. "基于LBM的2D/3D原状花岗岩残积土细观渗流模拟" . | 应用基础与工程科学学报 32 . 01 (2024) : 193-207 . |
| APA | 阙云 , 陈宪 , 蒋国平 , 蔡沛辰 , 吴应雄 . 基于LBM的2D/3D原状花岗岩残积土细观渗流模拟 . | 应用基础与工程科学学报 , 2024 , 32 (01) , 193-207 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Purpose The macropore structure and seepage characteristics profoundly influence the stability of granite residual soil (GRS) slopes. However, accurately predicting the permeability of undisturbed GRS (U-GRS) is challenging owing to its complex and susceptible pore structure. Aims and methods Employing X-ray computed tomography (CT) technologies, a three-dimensional (3D) pore structure of U-GRS, was established. Permeability prediction for U-GRS samples was conducted using three simulation methods, namely, the pore network model (PNM), finite element method (FEM), and the lattice Boltzmann method (LBM), along with two empirical models (EMs)-specifically, Kozeny-Carman (K-C) and Katz-Thompson (K-T) models. Subsequently, the methods were comparatively analyzed for calculating efficiency and accuracy. Finally, a piecewise permeability prediction model (PPPM) for U-GRS based on the CT-LBM was proposed. Results The ranking of permeability estimation methods in terms of accuracy was as follows: LBM > PNM > FEM > EMs. Substantial disparity was observed in the permeabilities obtained using both FEM and EMs compared to other methods, which exhibited a deviation of up to six orders of magnitude. The PPPM demonstrated smaller prediction deviations than the EMs, with its accuracy influenced by the strategy for selecting calculation parameters. Conclusion The CT-LBM, which uses real pore structures, was employed to estimate the permeability of U-GRS. The PPPM, established based on this method, was found to be applicable for estimating U-GRS permeability.
Keyword ：
Comparative analysis Comparative analysis Granite residual soil Granite residual soil Macropore Macropore Permeability model Permeability model X-ray computed tomography images X-ray computed tomography images
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Que, Yun , Chen, Xian , Jiang, Zhenliang et al. Pore-scale permeability estimation of undisturbed granite residual soil: A comparison study by different methods [J]. | JOURNAL OF SOILS AND SEDIMENTS , 2024 . |
| MLA | Que, Yun et al. "Pore-scale permeability estimation of undisturbed granite residual soil: A comparison study by different methods" . | JOURNAL OF SOILS AND SEDIMENTS (2024) . |
| APA | Que, Yun , Chen, Xian , Jiang, Zhenliang , Cai, Peichen , Xue, Bin , Xie, Xiudong . Pore-scale permeability estimation of undisturbed granite residual soil: A comparison study by different methods . | JOURNAL OF SOILS AND SEDIMENTS , 2024 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To promote the anti-ageing performance of asphalt, layered double hydroxides (LDHs) modified by propyl trimethoxylsilane (MPMS) was prepared and applied to modify asphalt. Fourier transform infrared spectroscopy (FTIR) showed that MPMS was chemically-grafted on the surface of LDHs. The interaction between LDHs and asphalt was significantly enhanced after MPMS organic modification, and MPMS organic LDHs (OMLDHs) exhibited better compatibility in asphalt. OMLDHs and LDHs could enhance the high-temperature properties of asphalt, particularly OMLDHs. After ageing, the properties and structure of asphalt were dramatically degenerated. The incorporation of LDHs could inhibit the oxygenic groups increase in asphalt molecules during ageing, and retard the gelatinization of colloidal structures. LDHs could alleviate the negative effect of ageing on asphalt, and improve the anti-ageing performance of asphalt. The improvement effectiveness of LDHs on the anti-ageing performance of asphalt was remarkably improved after MPMS modification.
Keyword ：
Anti-ageing performance Anti-ageing performance Asphalt Asphalt Chemical components Chemical components Chemical structure Chemical structure Layered double hydroxides Layered double hydroxides Molecular dynamics simulation Molecular dynamics simulation Rheological properties Rheological properties Surface organic modification Surface organic modification
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Canlin , Chen, Minxuan , Wang, Ting et al. Evaluation of surface organic layered double hydroxides on the anti-ageing performance of asphalt [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 413 . |
| MLA | Zhang, Canlin et al. "Evaluation of surface organic layered double hydroxides on the anti-ageing performance of asphalt" . | CONSTRUCTION AND BUILDING MATERIALS 413 (2024) . |
| APA | Zhang, Canlin , Chen, Minxuan , Wang, Ting , Xu, Song , Li, Yifei , Que, Yun et al. Evaluation of surface organic layered double hydroxides on the anti-ageing performance of asphalt . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 413 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为了分析短时冻融对浅层边坡稳定性造成的影响，揭示短时冻融条件下残积土和冻融界面抗剪强度损伤规律，通过盐水降低冰点实现冻融界面，进行不同冻融条件下快剪试验。试验结果表明：冻融主要损伤发生在前3次冻融循环过程中，含水率为21.5%时损伤最大，残积土和冻融界面的黏聚力损伤分别为41%和22%,内摩擦角为14%和10%,约占趋于稳定时的85%。黏聚力的损伤程度大于内摩擦角，且随含水率的增大而增大。冻融循环对残积土和冻融界面的强度及强度指标的影响差异随含水率增大、循环次数增加、冷端温度增大而增大。冻融作用对残积土的强度指标损伤程度均较冻融界面大，且强度指标均随着冻融次数增多呈指数衰减趋势。
Keyword ：
冻融界面 冻融界面 抗剪强度指标 抗剪强度指标 残积土 残积土 短时冻土 短时冻土
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 姚晓琴 , 张豪杰 , 阙云 et al. 短时冻融条件下残积土与冻融界面抗剪强度衰减规律对比分析 [J]. | 水利与建筑工程学报 , 2024 , 22 (03) : 66-72 . |
| MLA | 姚晓琴 et al. "短时冻融条件下残积土与冻融界面抗剪强度衰减规律对比分析" . | 水利与建筑工程学报 22 . 03 (2024) : 66-72 . |
| APA | 姚晓琴 , 张豪杰 , 阙云 , 廖炜明 . 短时冻融条件下残积土与冻融界面抗剪强度衰减规律对比分析 . | 水利与建筑工程学报 , 2024 , 22 (03) , 66-72 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Asphalt mixture is a typical granular material, and its macroscopic properties are closely related to the interaction behavior of aggregate particles at the micro scales. Discrete element method (DEM), as an important numerical simulation method in granular mechanics, plays an increasingly important role in analyzing the aggregate packing characteristics, skeleton features, predicting mechanical and pavement performance of asphalt mixtures. However, the complexity of the composition of asphalt mixtures, including the particle size, shape, spatial distribution of aggregate particles, and the viscoelasticity of asphalt binders sensitive to temperature, load, and time, increases the difficulty of constructing DEM models of asphalt mixtures, selecting contact constitutive models, and determining parameters, which directly affects the accuracy and efficiency of DEM simulations. In this review, the generation methods of idealized models, image models, and user-defined models currently used to generate DEM models of asphalt mixtures were summarized in detail. Conventional contact constitutive models, including elastic and viscoelastic contact stiffness constitutive models, as well as fracture models including bonding models and cohesive softening models, were discussed. Moreover, special contact constitutive models, such as damage, self-healing, and two-stage contact models considering compaction evolution, were also summarized and discussed. Then, the contact constitutive model parameters were classified and related determination methods were summarized, and the latest application directions of DEM in current asphalt mixture research were classified. On this basis, relevant discussions were carried out, and the challenges and future development prospects faced by DEM in asphalt mixture research were proposed.
Keyword ：
Application Application Asphalt mixture Asphalt mixture Contact constitutive model Contact constitutive model Discrete element method Discrete element method Model generation method Model generation method
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xue, Bin , Que, Yun , Pei, Jianzhong et al. A state-of-the-art review of discrete element method for asphalt mixtures: Model generation methods, contact constitutive models and application directions [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 414 . |
| MLA | Xue, Bin et al. "A state-of-the-art review of discrete element method for asphalt mixtures: Model generation methods, contact constitutive models and application directions" . | CONSTRUCTION AND BUILDING MATERIALS 414 (2024) . |
| APA | Xue, Bin , Que, Yun , Pei, Jianzhong , Ma, Xiaoyan , Wang, Di , Yuan, Yan et al. A state-of-the-art review of discrete element method for asphalt mixtures: Model generation methods, contact constitutive models and application directions . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 414 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
