An analytical model for the interaction between two dissimilar piles in a finite soil layer

2021 ◽  
Author(s):  
Huan Liu ◽  
Qijian Liu
Keyword(s):  
Analytical Model ◽  
Soil Layer ◽  
Finite Soil Layer

An alternative BE–FE formulation for a raft resting on a finite soil layer

2015 ◽  
Vol 50 ◽  
pp. 352-359 ◽  
Author(s):  
Dimas Betioli Ribeiro ◽  
João Batista de Paiva
Keyword(s):  
Soil Layer ◽  
Finite Soil Layer

A new analytical solution to axisymmetric Biot’s consolidation of a finite soil layer

2008 ◽  
Vol 29 (12) ◽  
pp. 1617-1624 ◽  
Author(s):  
Zhi-yong Ai ◽  
Quan-sheng Wang
Keyword(s):  
Analytical Solution ◽  
Soil Layer ◽  
Finite Soil Layer ◽  
Biot’S Consolidation

scholarly journals An Analytical Model of Evaporation Efficiency for Unsaturated Soil Surfaces with an Arbitrary Thickness

2011 ◽  
Vol 50 (2) ◽  
pp. 457-471 ◽  
Author(s):  
Olivier Merlin ◽  
Ahmad Al Bitar ◽  
Vincent Rivalland ◽  
Pierre Béziat ◽  
Eric Ceschia ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Analytical Model ◽  
Land Surface ◽  
Soil Layer ◽  
Soil Evaporation ◽  
Atmospheric Conditions ◽  
Potential Evaporation ◽  
Evaporative Demand ◽  
Soil Layers ◽  
Arbitrary Thickness

Abstract Analytical expressions of evaporative efficiency over bare soil (defined as the ratio of actual to potential soil evaporation) have been limited to soil layers with a fixed depth and/or to specific atmospheric conditions. To fill the gap, a new analytical model is developed for arbitrary soil thicknesses and varying boundary layer conditions. The soil evaporative efficiency is written [0.5 − 0.5 cos(πθL/θmax)]P with θL being the water content in the soil layer of thickness L, θmax being the soil moisture at saturation, and P being a function of L and potential soil evaporation. This formulation predicts soil evaporative efficiency in both energy-driven and moisture-driven conditions, which correspond to P < 0.5 and P > 0.5, respectively. For P = 0.5, an equilibrium state is identified when retention forces in the soil compensate the evaporative demand above the soil surface. The approach is applied to in situ measurements of actual evaporation, potential evaporation, and soil moisture at five different depths (5, 10, 30, 60, and 100 cm) collected in summer at two sites in southwestern France. It is found that (i) soil evaporative efficiency cannot be considered as a function of soil moisture only because it also depends on potential evaporation, (ii) retention forces in the soil increase in reaction to an increase of potential evaporation, and (iii) the model is able to accurately predict the soil evaporation process for soil layers with an arbitrary thickness up to 100 cm. This new model representation is expected to facilitate the coupling of land surface models with multisensor (multisensing depth) remote sensing data.

Steady-state analytical model for vapour-phase volatile organic compound (VOC) diffusion in layered landfill composite cover systems

2017 ◽  
Vol 54 (11) ◽  
pp. 1567-1579 ◽  
Author(s):  
Haijian Xie ◽  
Qiao Wang ◽  
Huaxiang Yan ◽  
Yunmin Chen
Keyword(s):  
Analytical Model ◽  
Water Saturation ◽  
Soil Layer ◽  
Surface Flux ◽  
Vapour Phase ◽  
Retardation Factor ◽  
Protective Layers ◽  
Cover System ◽  
Volatile Organic ◽  
Benzene Concentration

An analytical model for the diffusion of one-dimensional vapour-phase volatile organic compounds (VOCs) through a four-layer landfill composite cover system consisting of a protective layer, drainage layer, geomembrane (GMB), and compacted clay liner (CCL) is developed. Effects of degree of water saturation (Sr), adsorption, and degradation on vapour-phase VOC diffusion in a cover system are then analyzed. The vapour-phase benzene concentration profile increases with increase of Sr in the drainage and protective layers. When Sr1 = Sr2 = 0.5 (where Sr1 and Sr2 are degree of water saturation of the protective and drainage layers, respectively), surface flux for the case with the degree of water saturation of the CCL layer Sr4 = 0.3 is 1.3 and 1560 times larger than that with Sr4 = 0.7 and = 0.9, respectively. The effect of adsorption of the VOCs in the CCL on performance of the cover system is more important than that in the drainage and protective layers. Surface flux and concentration of benzene tends to be zero when CCL is amended with 0.5% biochar due to an increase of the retardation factor. The effect of degradation rate on benzene concentration increases with increase of degree of water saturation. The influence of half-life of VOCs in the soil layer, t1/2, on vapour-phase VOC concentration can be neglected when Sr ≤ 0.3.

Rutting Performance of Road Using Construction and Demolition Waste Materials

2021 ◽  
Vol 882 ◽  
pp. 221-227
Author(s):  
Arpan Ray ◽  
Radhikesh Prasad Nanda ◽  
Pronab Roy
Keyword(s):  
Analytical Model ◽  
Soil Layer ◽  
Road Construction ◽  
Construction And Demolition Waste ◽  
Waste Materials ◽  
Layer System ◽  
Demolition Waste ◽  
Strength Criteria ◽  
Concrete Layer ◽  
Aggregate Impact Value

Wastes arising from construction and demolition (C & D) constitute one of the major streams in many countries. In this paper experimental investigation was carried to see the feasibility of C& D waste as road aggregates. From the grading analysis it was observed that using C& D wastes, strength criteria is being satisfied and meet the specifications of MORTH which is then subjected to aggregate impact value (AIV) testing, CBR testing etc. The CBR value of C&D waste was found to be 43.46 which were well above the permissible value. A proposed three-layer system using soil layer, C & D waste layer and asphalt concrete layer is chosen to estimate rut depth using existing analytical model. From the analytical model rut depth is predicted to be 14.77 mm which is less then maximum allowable limits. Hence C& D waste materials can be used as alternate materials in road construction with economy and sustainability.

scholarly journals Substantiation of the parameters of the disk-knife working body and the study of its work 

2018 ◽  
Vol 64 (No. 4) ◽  
pp. 195-201
Author(s):  
Savelii Kukharets ◽  
Gennadii Golub ◽  
Viktor Biletskii ◽  
Oleksandr Medvedskii
Keyword(s):  
Analytical Model ◽  
Equations Of Motion ◽  
Soil Layer ◽  
Comparative Test ◽  
The Body ◽  
Geometrical Parameters ◽  
Plant Remains ◽  
Working Bodies ◽  
The Individual

The work is devoted to the issue of improving the quality of cultivating of root-bearing soil layer and optimizing its agrotechnological properties. Improving the quality of cultivation is due to the application of soil cultivating tools equipped with disk-knife working bodies. They are provided theoretical and experimental study of the work of the disk-knife working body, and it is substantiated its rational parameters. The basis of the substantiation of the parameters of the cultivating tool is the original analytical model, which reflects the process of interaction of the working body with the soil. To study the performance of the process, on the basis of kinematic equations of motion of the individual points of the working bodies, it is developed the analytical model of the motion of the battery of the working bodies. On the basis of the provided analytical researches, they were determined geometrical parameters and developed experimental samples of the disk-knife working body. It was carried out a comparative test in the field of tools equipped with disk-knife working bodies and with standard spherical cut-off discs, which confirmed the effectiveness of the use of disk-knife working bodies. The use of disk-knife working bodies ensures: the burying of plant remains and fertilizers into the root-bearing soil layer, improving the quality of soil cultivation, preserving of its structure, reducing the traction resistance of the body.

Study of the Earth Pressure of the Finite Soil Layer

2021 ◽  
pp. 448-456
Author(s):  
Du Yi-han ◽  
Liu Xuan-yu ◽  
Jiang Min
Keyword(s):  
Soil Layer ◽  
Earth Pressure ◽  
The Earth ◽  
Finite Soil Layer

scholarly journals A Proposed Analytical Model for the Debris Flow with Erosion and Entrainment of Soil Layer

2016 ◽  
Vol 32 (10) ◽  
pp. 17-29 ◽  
Author(s):  
Kwang-Woo Lee ◽  
Hyun-Do Park ◽  
Sang-Seom Jeong
Keyword(s):  
Debris Flow ◽  
Analytical Model ◽  
Soil Layer
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