Soil modelling

The present paper also includes strength prediction models that consider the influence of curing temperature. In addition, the Thermogravimetry analysis (TGA) used to determine the chemically bound water content in cement-treated soil and the X-ray diffraction (XRD) test to explain the chemical mechanism in cement-treated soil are also mentioned.

18p viengfa 28-10-2024 1 1   Download

In this study, the Machine Learning (ML) approach has been adopted using Random Forest (RF) model to estimate the CBR of the soil based on 10 input parameters such as Plasticity Index (PI), Liquid Limit (LL), Silt Clay content (SC), Fine Sand content (FS), Coarse sand content (CS), Optimum Water Content (OWC), Organic content (O), Plastic Limit (PL), Gravel content (G), and Maximum Dry Density (MDD), which can be easily determined in the laboratory.

14p viengfa 28-10-2024 5 2   Download

Light Gradient Boosting Machine is a new machine learning technique developed by Microsoft corporation which has been proposed in the present study to determine the CBR of stabilized expansive soils. Model performance of the ML model are evaluated by different criteria such as correlation coefficient R, root mean square error RMSE and mean absolute error MAE.

8p viengfa 28-10-2024 3 2   Download

This study aims to evaluate the allowable bearing capacity of the strip footing subjected to uniform vertical loading. Finite element modeling is implemented to analyze the behavior of soil the ground under the strip footing.

4p vibecca 01-10-2024 2 0   Download

The prediction of ground settlement under tunnel excavation is still challenge. Almost engineer uses Mohr-Coulomb model in practice due to the conventional geotechnical investigation data. This paper describes the study of tunnel lining behaviors and ground surface settlement under tunneling process with a typical case study of twin tunnels excavation in Ho Chi Minh city, Vietnam.

11p vibecca 01-10-2024 1 1   Download

This study shows the results of landslide susceptibility mapping for the southwest region of Quang Nam province using the Weights of Evidence (WoE) model. The input data consists of a landslide inventory and ten influencing factors, i.e., geology, distance to fault, elevation, relief amplitude, slope, aspect, rainfall, soil type, land use, and distance to road.

15p vibecca 01-10-2024 5 1   Download

This study applies the GRU (Gated Recurrent Unit) model when selecting different values of batch-size, namely 16, 32, and 64, with varying epochs of 20, 50, 100, 150, and 200. The input data comprises observations collected by two GNSS CORS stations from the VNGEONET network, namely HYEN and CTHO, spanning from August 10, 2019, to March 18, 2022.

10p vibecca 01-10-2024 3 1   Download

A hybrid analytical-numerical solution is proposed to solve the problem of a laterally loaded pile with a circular cross-section in multilayered soils. In the pile-soil model, the lateral load is located at the pile head including both lateral force and bending moment. The single pile is considered as a beam on elastic foundation while shear beams model the soil column below the pile toe.

14p vifilm 24-09-2024 6 1   Download

The modulus reduction and damping curves represent the nonlinear behavior of soil under cyclic load. In the literature, those curves were produced from lab tests of soil at particular confining stresses. This study developed a set of parameters that can be used to normalize the modulus reduction and damping curves to be stress-independent.

16p vifilm 24-09-2024 3 2   Download

The objectives of this study are to evaluate the role of land surface, soils and climate characteristics on the groundwater balance within the area of Long Bien district of Hanoi and to answer the question if the expected land cover and land use changes in the near future are critical for sustainable management of groundwater resources in the area.

5p viyoko 24-09-2024 3 0   Download

A fuzzy finite element approach for static analysis of laterally loaded pile in multi-layer soil with uncertain properties is presented. The finite element (FE) formulation is established using a beam-on-two-parameter foundation model.

9p viyoko 24-09-2024 4 0   Download

Vacuum consolidation preloading method (VCM) has been widely adopted as an effective solution for soft soil improvement over the world. Recently, VCM has been successfully applied for improving the geotechnical properties of dredged mud, which is normally dumped at reclamation area by hydraulic pumping.

10p viyoko 24-09-2024 1 1   Download

This paper presents the upper bound limit analysis of a slope in cohesive-frictional soils using the node-based smoothed finite element method (NS-FEM). The soil slope was discretized as triangular elements and modeled as Mohr-Coulomb material with the associated flow rule.

14p vifaye 20-09-2024 4 1   Download

Bài giảng Chuyên đề SWAT (Soil and Water Assessment Tool) - Chương 1: Tổng quan về mô hình SWAT (Overview of SWAT model). Những nội dung chính được trình bày trong chương này gồm có: Khái niệm thủy văn, thủy văn lưu vực, chu trình thủy văn, mô hình thủy văn; tổng quan về SWAT; nguyên lý mô phỏng SWAT; tiến trình mô phỏng SWAT. Mời các bạn cùng tham khảo!

41p zizaybay1106 19-07-2024 8 1   Download

This study utilized the GIS-based Soil and Water Assessment Tool (SWAT) model to simulate the flow of Vu Gia - Thu Bon river basin at two hydrological stations - Nong Son and Thanh My, during the calibration period (2004 - 2010) and the verification period (2011 - 2015). The evaluation results of both periods, as measured by the NSE and R2 indexes, were found to be above 0.75.

12p dianmotminh02 03-05-2024 3 3   Download

Bài giảng Nền móng công trình xây dựng - Chương 3: Mô hình hóa môi trường đất. Chương này cung cấp cho học viên những nội dung về: mô hình hóa môi trường đất (modeling soil media); mô hình hệ số nền (discrete soil model); mô hình cơ học vật liệu nền (soil constitutive model);... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

40p chutieubang 06-12-2022 22 6   Download

Soil erosion is a naturally occurring process in mountainous areas that affects all landforms. Located in Central of Vietnam, in the tropical monsoon climate Da Nang City is characterized by more than 70 percentage of area with hilly and mountainous topography. This study is objective apply the Universal Soil Loss Equation (ULSE) model developed by Wischmeier and Smith (1978) integrating with remote sensing data and Geographical Information System (GIS) tool to evaluate soil erosion risk in Da Nang City, Vietnam.

11p viindranooyi 04-05-2022 13 2   Download

Bài viết sử dụng Plaxis 2D với một số mô hình đất (Mohr-Coulomb, Hardening Soil) để dự đoán hành vi đào sâu trong đất sét mềm saturead. Dữ liệu dự đoán được so sánh với việc làm lưới tại hiện trường và phát hiện ra rằng modell đất cứng có vẻ phù hợp nhất. Để hiểu rõ hơn mời các bạn cùng tham khảo nội dung chi tiết của bài viết này.

8p interstellar 22-09-2021 26 2   Download

From the experimental studies on the indoor model, the analysis of the software model under the load of the column system combined with the high strength geogrid considering the ground pressure, the column deformation, and the mesh deformation, propose new calculation formulas, which are more suitable in GRPS design.

27p hobbsandshaw 09-06-2021 22 4   Download

The literal meaning of Hysteresis is to be lagged behind. In soil system, it is evident that the two soil moisture characteristic curves do not follow the exact same reversible path. As a result a hysteretic behaviour is experienced. Several causes may be attributed like non uniformity of pores, contact angle difference, entrapped air in pore space and the swelling and shrinking property of soil. To predict the hysteretic behaviour, several models defining the character were also suggested like Conceptual models and Empirical models.

6p gaocaolon9 22-12-2020 14 2   Download