GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Material
Publisher
Person/Organisation
Language
Years
FID
Subjects(RVK)
  • 1
    Online Resource
    Online Resource
    Numerical simulation of the moisture migration of unsaturated clay embankments in southern China considering stress state
    Springer Science and Business Media LLC ; 2021
    In:  Bulletin of Engineering Geology and the Environment Vol. 80, No. 1 ( 2021-01), p. 11-24
    Details
    In: Bulletin of Engineering Geology and the Environment, Springer Science and Business Media LLC, Vol. 80, No. 1 ( 2021-01), p. 11-24
    Type of Medium: Online Resource
    ISSN: 1435-9529 , 1435-9537
    URL: Article
    DOI: 10.1007/s10064-020-01916-6
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 1480689-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 2
    Online Resource
    Online Resource
    Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value
    Hindawi Limited ; 2018
    In:  Advances in Civil Engineering Vol. 2018 ( 2018-07-05), p. 1-7
    Details
    In: Advances in Civil Engineering, Hindawi Limited, Vol. 2018 ( 2018-07-05), p. 1-7
    Abstract: This study described a new methylene blue test to measure the methylene blue value (MBV) for 15 cohesive soils and established the relationship between MBV and plasticity index (PI) and between MBV and percent passing No. 200 sieve (P 200 ), respectively. Thereafter, the soil-water characteristic curves (SWCCs) for 15 cohesive soils based on Fredlund and Xing’s model were generated by the pressure plate test. Then, regression equations for determining the four fitting parameters in a previously developed SWCC equation by using the measured MBV were utilized to generate the SWCC for the cohesive soils. At the same time, the slope parameter, b f , in the SWCC equations was found to be associated with the moisture susceptibility of cohesive soils. A higher b f value indicates that the material is more moisture susceptible. In addition, a lower MBV/PI/P 200 shows a lower suction at the same degree of saturation; on the other hand, a higher MBV/PI/P 200 presents a higher suction. Therefore, the moisture-holding capacity of cohesive soils increases with increasing MBV, PI, and P 200 . Finally, the proposed estimation method was validated by a comparison between the four determined fitting parameters from MBV and the pressure plate test.
    Type of Medium: Online Resource
    ISSN: 1687-8086 , 1687-8094
    URL: Article
    DOI: 10.1155/2018/9213674
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2018
    detail.hit.zdb_id: 2449760-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 3
    Online Resource
    Online Resource
    Rapid estimation of resilient modulus of subgrade soils using performance-related soil properties
    Informa UK Limited ; 2021
    In:  International Journal of Pavement Engineering Vol. 22, No. 6 ( 2021-05-12), p. 732-739
    Details
    In: International Journal of Pavement Engineering, Informa UK Limited, Vol. 22, No. 6 ( 2021-05-12), p. 732-739
    Type of Medium: Online Resource
    ISSN: 1029-8436 , 1477-268X
    URL: Article
    DOI: 10.1080/10298436.2019.1643022
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2021
    detail.hit.zdb_id: 2135763-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 4
    Online Resource
    Online Resource
    Gray Correlation Analysis and Prediction on Permanent Deformation of Subgrade Filled with Construction and Demolition Materials
    MDPI AG ; 2019
    In:  Materials Vol. 12, No. 18 ( 2019-09-19), p. 3035-
    Details
    In: Materials, MDPI AG, Vol. 12, No. 18 ( 2019-09-19), p. 3035-
    Abstract: Construction and demolition (C & D) materials obtained from the demolition of buildings are proven to be qualified and sustainable subgrade fillers. The permanent deformation response of subgrade C & D materials under different moisture contents, degrees of compaction, deviator stresses, and confining pressures was revealed by carrying out dynamic triaxial texts. Then, using a four-factor and three-level orthogonal test and by calculating the Gray correlation degree of each factor, the influence degree of each factor on the permanent deformation was determined. The results indicated that two different response types of the permanent deformation of subgrade C & D materials, plastic shakedown and plastic creep, were identified as reason behind the increase in stress levels. Also, according to the Gray correlation analysis results, the permanent deformation of highway subgrade filled with C & D materials is influenced by the deviator stress most significantly, followed by moisture content, degree of compaction, and confining pressure. Finally, a permanent deformation prediction model about this kind of subgrade filler with a reasonable prediction accuracy was proposed.
    Type of Medium: Online Resource
    ISSN: 1996-1944
    URL: Article
    DOI: 10.3390/ma12183035
    Language: English
    Publisher: MDPI AG
    Publication Date: 2019
    detail.hit.zdb_id: 2487261-1
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 5
    Online Resource
    Online Resource
    Method for efficient calculating earth pressure of retaining wall considering plant transpiration
    Springer Science and Business Media LLC ; 2023
    In:  Scientific Reports Vol. 13, No. 1 ( 2023-09-16)
    Details
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 13, No. 1 ( 2023-09-16)
    Abstract: An accurate estimation of earth pressure on retaining walls is imperative to achieving its design. This paper presents an analytical method framework that considers the effect of plant transpiration relative to the traditional calculation approaches. Specifically, a closed-form solution for one-dimensional steady unsaturated flow considering plant transpiration is incorporated into a representation of effective stress to obtain the changes in matric suction, and effective stress. The representations are used to extend Hooke’s law and Rankine’s earth pressure theory to determine at-rest, active, and passive earth pressures. Subsequently, the analytical method is used in a series of analysis case studies on the influence of root architecture types, transpiration rates, and soil types on earth pressure, to reveal that it can rapidly obtain the earth pressure. Notably, the effect of plant transpiration on earth pressure is significant. Furthermore, it is found that soil types and transpiration rates have a larger influence than root architecture types. Collectively, the research not only reveals the effect of plant on earth pressure for retaining wall, but also provides a theoretical basis for further exploration of the contribution of plants to the stability of retaining wall.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    URL: Article
    DOI: 10.1038/s41598-023-42411-8
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2023
    detail.hit.zdb_id: 2615211-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 6
    Online Resource
    Online Resource
    Model for Predicting Resilient Modulus of Unsaturated Subgrade Soils in South China
    Springer Science and Business Media LLC ; 2018
    In:  KSCE Journal of Civil Engineering Vol. 22, No. 6 ( 2018-6), p. 2089-2098
    Details
    In: KSCE Journal of Civil Engineering, Springer Science and Business Media LLC, Vol. 22, No. 6 ( 2018-6), p. 2089-2098
    Type of Medium: Online Resource
    ISSN: 1226-7988 , 1976-3808
    URL: Article
    DOI: 10.1007/s12205-018-1703-1
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2018
    detail.hit.zdb_id: 2446036-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 7
    Online Resource
    Online Resource
    Moisture Migration and Control of New Embankment for Reconstruction and Expansion Project in Southern China
    Hindawi Limited ; 2020
    In:  Advances in Civil Engineering Vol. 2020 ( 2020-07-21), p. 1-14
    Details
    In: Advances in Civil Engineering, Hindawi Limited, Vol. 2020 ( 2020-07-21), p. 1-14
    Abstract: In hot and humid regions of southern China, the volumetric moisture content of the embankment after opening to traffic for a period of time reaches a stable state, and it is higher than the design value. When it was widened, the humidity gradient and exchange were formed due to the difference in moisture content between the existing and new embankment. To reveal the moisture migration of the existing and new embankment and control the rise of volumetric moisture content in new embankment, six frequency domain reflectometry sensors were installed in existing and new embankment to monitor the volumetric moisture content. A finite element model for the embankment was established and verified with the measured data. And seven numerical analyses of transient seepage in the new embankment of the cushion, cover, and partition using capillary barrier by sand were simulated. The results show that the volumetric moisture contents of the new embankment in southern China gradually increase and eventually reach an equilibrium state. The increase in water comes from the slope, the foundation, and the existing embankment. Early in the first 1∼2 years, the water mainly comes from the foundation and the existing embankment. After that, as time goes by, the water comes mostly from the slope infiltration and gradually migrates to the foundation and the existing embankment. Finally, the volumetric moisture content and the water storage gradually reach equilibrium. The volumetric moisture content of the new embankment using capillary barrier by sand at the cushion, the cover, and the partition is maintained as the construction volumetric moisture content. This combination is a very effective method to control the humidity stability of the new embankment in southern China.
    Type of Medium: Online Resource
    ISSN: 1687-8086 , 1687-8094
    URL: Article
    DOI: 10.1155/2020/7230537
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2020
    detail.hit.zdb_id: 2449760-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 8
    Online Resource
    Online Resource
    Modeling humidity and stress-dependent subgrade soils in flexible pavements
    Elsevier BV ; 2020
    In:  Computers and Geotechnics Vol. 120 ( 2020-04), p. 103413-
    Details
    In: Computers and Geotechnics, Elsevier BV, Vol. 120 ( 2020-04), p. 103413-
    Type of Medium: Online Resource
    ISSN: 0266-352X
    URL: Article
    DOI: 10.1016/j.compgeo.2019.103413
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2020
    detail.hit.zdb_id: 1492536-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 9
    Online Resource
    Online Resource
    Prediction of permanent deformation for subgrade soils under traffic loading in Southern China
    Informa UK Limited ; 2022
    In:  International Journal of Pavement Engineering Vol. 23, No. 3 ( 2022-02-23), p. 673-682
    Details
    In: International Journal of Pavement Engineering, Informa UK Limited, Vol. 23, No. 3 ( 2022-02-23), p. 673-682
    Type of Medium: Online Resource
    ISSN: 1029-8436 , 1477-268X
    URL: Article
    DOI: 10.1080/10298436.2020.1765244
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2022
    detail.hit.zdb_id: 2135763-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 10
    Online Resource
    Online Resource
    Numerical Method of Flexible Pavement considering Moisture and Stress Sensitivity of Subgrade Soils
    Hindawi Limited ; 2019
    In:  Advances in Civil Engineering Vol. 2019 ( 2019-05-30), p. 1-10
    Details
    In: Advances in Civil Engineering, Hindawi Limited, Vol. 2019 ( 2019-05-30), p. 1-10
    Abstract: Weaknesses of the subgrade structure induce the asphalt surface diseases and shorten the service life of flexible pavement. However, the resilient modulus (Mr) of subgrade soils is difficult to be evaluated directly since the subgrade is hidden and covered by the granular or asphalt layer. This study aimed to establish a numerical approach to predict the dynamic behavior of flexible pavements considering the stress sensitivity and moisture variation of subgrade soils. Firstly, 2D FEM simulations of flexible pavements were performed with half-sine loadings. A constitutive model of subgrade soils was proposed to incorporate soil suction and octahedral shear stress. It was validated using the laboratory triaxial test data of 3 selected soils. Then, the developed model was programmed by the user-defined material subroutine (UMAT) in the software ABAQUS. Subsequently, the validity of FEM model was verified by the laboratory tank model. Finally, the effect of moisture contents on the dynamic response of pavement structures was studied by tensile stress and vertical compressive strain. Results show that the surface deflection of the FEM model is similar to that of the actual pavement structure with the R 2 of 98.44%. The developed UMAT program is reliable since the distribution of Mr in the FEM model is influenced by the stress and moisture condition of subgrade soils. When the moisture content is increased by 63%, the average Mr of subgrade soils is decreased by 18.7%. Meanwhile, the stiffness softening of subgrade soils increases vertical compressive strain at the top of the subgrade and the tensile stress at the bottom of the surface layer. It is interesting that the developed model can be applied to analyze the fatigue cracking of both subgrade and surface layers in the future.
    Type of Medium: Online Resource
    ISSN: 1687-8086 , 1687-8094
    URL: Article
    DOI: 10.1155/2019/7091210
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2019
    detail.hit.zdb_id: 2449760-5
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...