Rakesh Kumar Dutta - Academia.edu (original) (raw)

Papers by Rakesh Kumar Dutta

Research paper thumbnail of Performance of Rectangular Footing on Loose Sand Reinforced with Micropiles

Indian Geotechnical Journal

This study uses finite element analysis to determine the ultimate bearing capacity and the settle... more This study uses finite element analysis to determine the ultimate bearing capacity and the settlement of the rectangular footing reinforced with micropiles under concentric, vertical loads. The parameters varied were size of footing (2 m × 2 m–4 m × 2 m), the size of square micropiles (0.1–0.4 m), the length of micropiles (5–10 m), number of micropiles (8–16) and the distance between the edge of footing and micropiles (0.1–0.8 m). The study’s results indicate that for all micropile spacing and micropile distances from the edge of the footing, the bearing capacity increases while the relative settlement decreases with micropile size. The results further revealed that the bearing capacity increases, and relative settlement decreases with increase in the number of micropiles around the footing. In comparison with rectangular footing, square footing has a higher bearing capacity. Further, the effect of length of the micropiles is linked with the edge distance and the size of micropile.

Research paper thumbnail of Bearing Capacity of Skirted Ring Footing on Dense Sand Overlying Loose Sand

Current Indian Science

Introduction: The ultimate bearing capacity of an unskirted/skirted ring foundation on dense sand... more Introduction: The ultimate bearing capacity of an unskirted/skirted ring foundation on dense sand overlying loose sand is estimated using finite element analysis in this study. Method: The range of thickness ratio (thickness of top dense sand layer divided by external diameter of ring) was kept between 0.25 and 1.5. The friction angle of the upper dense and bottom loose sand layers was maintained between 40° and 44° and 30° and 34°, respectively. In the case of skirted ring footing, the skirts are attached at the inner edge, outer edge, and both the edges, respectively. Result: According to the results, the bearing capacity increases with an increase in either the friction angle of upper dense and lower loose sand layers or the thickness ratio. A double-skirted ring footing was observed to provide the greatest bearing capacity, followed by footing with skirts attached at the outer and inner edges, respectively. Conclusion: To sum up, the bearing capacity of the ring footing was high...

Research paper thumbnail of Numerical Study of Pullout Capacity of Multi-edges Multiplate Horizontal Anchors in Sand

Indian Geotechnical Journal

Research paper thumbnail of Bearing capacity of skirted ring footing on soft clay overlying dense sand

Innovative Infrastructure Solutions

Research paper thumbnail of Numerical Estimation of Bearing Capacity of Shallow Footings Resting on Layered Sand

Transportation Infrastructure Geotechnology

Research paper thumbnail of Support Vector Machines-Based Prediction of Elastic Modulus for Granite Rock

Lecture Notes in Mechanical Engineering, 2022

Research paper thumbnail of Estimation of bearing capacity of shallow footings on layered sand using finite elements analysis

Journal of Engineering, Design and Technology, 2022

Purpose This paper aims to estimate the bearing capacity of a surface strip and circular footings... more Purpose This paper aims to estimate the bearing capacity of a surface strip and circular footings lying on layered sand using numerical limit analysis. Design/methodology/approach Lower and upper bound limit analysis, as well as finite elements and second-order conic programming (SOCP), are used in this analysis. The yield criterion of Mohr-Coulomb is used to model soil behavior. Using this technique, stringent lower and upper bounds on ultimate bearing capacity can be achieved by assuming an associated flow law. Findings The obtained results indicate that the exact collapse load is typically being bracketed to within 6% about a mean of both the bounds. The obtained results are compared with the existing literature wherever applicable. Originality/value To the best of the authors’ knowledge, no study has used lower and upper bound limit analysis, as well as finite elements and SOCP, to estimate the bearing capacity of a surface strip and circular footings lying on layered sand.

Research paper thumbnail of Soft computing based prediction of friction angle of clay

Archives of Materials Science and Engineering, 2020

Purpose: This article uses soft computing-based techniques to elaborate a study on the prediction... more Purpose: This article uses soft computing-based techniques to elaborate a study on the prediction of the friction angle of clay. Design/methodology/approach: A total of 30 data points were collected from the literature to predict the friction angle of the clay. To achieve the friction angle, the independent parameters sand content, silt content, plastic limit and liquid limit were used in the soft computing techniques such as artificial neural networks, M5P model tree and multi regression analysis. Findings: The major findings from this study are that the artificial neural networks are predicting the friction angle of the clay accurately than the M5P model and multi regression analysis. The sensitivity analysis reveals that the clay content is the major influencing independent parameter to predict the friction angle of the clay followed by sand content, liquid limit and plastic limit. Research limitations/implications: The proposed expressions can used to predict the friction angle ...

Research paper thumbnail of Characterization, Durability, and Application of Treated Coir Geotextiles in Low Volume Roads

Journal of Natural Fibers, 2021

Research paper thumbnail of Application Potential of Treated Coir Geotextiles in Unpaved Roads

Journal of Natural Fibers, 2019

Research paper thumbnail of Effect of Chemical Treatment of the Coir Geotextiles on the Interface Properties of Sand–/Clay–Coir Geotextile Interface

Journal of The Institution of Engineers (India): Series A, 2019

Research paper thumbnail of Pressure-settlement behavior of square and rectangular skirted footings resting on sand

Geomechanics and Engineering, 2017

Research paper thumbnail of Effect of diesel and gasoline on the properties of sands — a comparative study

International Journal of Geotechnical Engineering, 2011

... Ghaly, AM, (2001). ... Shin, EC, Omar, MT, Tahmaz, AA, Das, BM, (2002).”Shear strength and hy... more ... Ghaly, AM, (2001). ... Shin, EC, Omar, MT, Tahmaz, AA, Das, BM, (2002).”Shear strength and hydraulic conductivity of oil-contaminated sand.” In: de Mello, LG, Almeida, M. (Eds.), Proceedings of the Fourth International Congress on Environmental Geotechnics, Rio de Janeiro ...

Research paper thumbnail of Experimental and numerical studies of skirted hexagonal footings on three sands

SN Applied Sciences, 2020

Research paper thumbnail of Geotechnical properties of bentonite mixed with nanosilica

Multiscale and Multidisciplinary Modeling, Experiments and Design

Research paper thumbnail of Sensitivity analysis and estimation of improved unsaturated soil plasticity index using SVM, M5P, and random forest regression

Research paper thumbnail of Bearing capacity of embedded and skirted E-shaped footing on layered sand

Journal of Achievements in Materials and Manufacturing Engineering, 2021

Purpose: The purpose of this study is to investigate the ultimate bearing capacity of the embedde... more Purpose: The purpose of this study is to investigate the ultimate bearing capacity of the embedded and skirted E-shaped footing resting on two layered sand using finite element method. The analysis was carried out by using ABACUS software. Design/methodology/approach: The numerical study of the ultimate bearing capacity of the embedded and skirted E-shaped footing resting on layered sand and subjected to vertical load was carried out using finite element analysis. The layered sand was having an upper layer of loose sand of thickness H and lower layer was considered as dense sand of infinite depth. The various parameters varied were the friction angle of the upper (30° to 34°) and lower (42° to 46°) layer of sand, the skirt depth (0B, 0.25B, 0.5B and 1B), the embedment depth (0B, 0.25B, 0.5B and 1B) and the thickness (0.5B, 2B and 4B) of the upper sand layer, where B is the width of the square footing. Findings: The ultimate bearing capacity was higher for the skirted E-shaped footin...

Research paper thumbnail of Study of bearing capacity of skirted irregular pentagonal footings on different sands

Journal of Achievements in Materials and Manufacturing Engineering, 2021

Purpose: The paper presents an experimental and numerical study to evaluate the bearing capacity ... more Purpose: The paper presents an experimental and numerical study to evaluate the bearing capacity of unskirted, singly and doubly skirted irregular pentagonal footings on different sands (S1, S2, S3) at a relative density of 30 %. The skirt depth of the footing was varied from 0.0B to 1.5B (B is the width of the square footing). Design/methodology/approach: The experimental and numerical study of the singly and doubly skirted irregular pentagonal footing resting on sands was modelled in a test tank and Plaxis 3D software respectively. Findings: The results of this study reveal that the bearing capacity was higher for the skirted irregular pentagonal footings on sand S3 followed by sand S2 and S1. The lowest percentage improvement for the singly skirted footing on sand S3 was 18.51% at a Ds/B = 0.25 whereas the highest improvement was 90.81% at a Ds/B = 1.50 for the singly skirted footing on sand S2. The highest percentage improvement for the doubly skirted footing on sand S2 was 95.1...

Research paper thumbnail of Mechanical Behaviour of Bentonite-Cement Mixtures Subjected to Change in Moisture Content

Lecture Notes in Civil Engineering, 2021

Research paper thumbnail of Application of Random Forest Regression in the Prediction of Ultimate Bearing Capacity of Strip Footing Resting on Dense Sand Overlying Loose Sand Deposit

The paper presents the prediction of the ultimate bearing capacity of the strip footing resting o... more The paper presents the prediction of the ultimate bearing capacity of the strip footing resting on layered soil (dense sand overlying loose sand) using random forest regression (RFR). In this study, 181 data collected from literature were used. 71 % of the total data was randomly selected for training the model and the rest of the data were utilized for the testing purpose. The various input parameters were friction angle of the dense sand layer (f1), friction angle of the loose sand layer (f2), unit weight of the dense sand layer (g1), unit weight of the loose sand layer (g2), ratio of the thickness of the dense sand layer below base of the footing to the width of footing (H/B), ratio of the depth of the footing to the width of the footing (D/B) and (H+D)/B. Ultimate bearing capacity was the output in this study. Performance measures were used in order to make the comparison with the artificial neural network (ANN) and M5P model tree. The result of this study revealed that the perf...

Research paper thumbnail of Performance of Rectangular Footing on Loose Sand Reinforced with Micropiles

Indian Geotechnical Journal

This study uses finite element analysis to determine the ultimate bearing capacity and the settle... more This study uses finite element analysis to determine the ultimate bearing capacity and the settlement of the rectangular footing reinforced with micropiles under concentric, vertical loads. The parameters varied were size of footing (2 m × 2 m–4 m × 2 m), the size of square micropiles (0.1–0.4 m), the length of micropiles (5–10 m), number of micropiles (8–16) and the distance between the edge of footing and micropiles (0.1–0.8 m). The study’s results indicate that for all micropile spacing and micropile distances from the edge of the footing, the bearing capacity increases while the relative settlement decreases with micropile size. The results further revealed that the bearing capacity increases, and relative settlement decreases with increase in the number of micropiles around the footing. In comparison with rectangular footing, square footing has a higher bearing capacity. Further, the effect of length of the micropiles is linked with the edge distance and the size of micropile.

Research paper thumbnail of Bearing Capacity of Skirted Ring Footing on Dense Sand Overlying Loose Sand

Current Indian Science

Introduction: The ultimate bearing capacity of an unskirted/skirted ring foundation on dense sand... more Introduction: The ultimate bearing capacity of an unskirted/skirted ring foundation on dense sand overlying loose sand is estimated using finite element analysis in this study. Method: The range of thickness ratio (thickness of top dense sand layer divided by external diameter of ring) was kept between 0.25 and 1.5. The friction angle of the upper dense and bottom loose sand layers was maintained between 40° and 44° and 30° and 34°, respectively. In the case of skirted ring footing, the skirts are attached at the inner edge, outer edge, and both the edges, respectively. Result: According to the results, the bearing capacity increases with an increase in either the friction angle of upper dense and lower loose sand layers or the thickness ratio. A double-skirted ring footing was observed to provide the greatest bearing capacity, followed by footing with skirts attached at the outer and inner edges, respectively. Conclusion: To sum up, the bearing capacity of the ring footing was high...

Research paper thumbnail of Numerical Study of Pullout Capacity of Multi-edges Multiplate Horizontal Anchors in Sand

Indian Geotechnical Journal

Research paper thumbnail of Bearing capacity of skirted ring footing on soft clay overlying dense sand

Innovative Infrastructure Solutions

Research paper thumbnail of Numerical Estimation of Bearing Capacity of Shallow Footings Resting on Layered Sand

Transportation Infrastructure Geotechnology

Research paper thumbnail of Support Vector Machines-Based Prediction of Elastic Modulus for Granite Rock

Lecture Notes in Mechanical Engineering, 2022

Research paper thumbnail of Estimation of bearing capacity of shallow footings on layered sand using finite elements analysis

Journal of Engineering, Design and Technology, 2022

Purpose This paper aims to estimate the bearing capacity of a surface strip and circular footings... more Purpose This paper aims to estimate the bearing capacity of a surface strip and circular footings lying on layered sand using numerical limit analysis. Design/methodology/approach Lower and upper bound limit analysis, as well as finite elements and second-order conic programming (SOCP), are used in this analysis. The yield criterion of Mohr-Coulomb is used to model soil behavior. Using this technique, stringent lower and upper bounds on ultimate bearing capacity can be achieved by assuming an associated flow law. Findings The obtained results indicate that the exact collapse load is typically being bracketed to within 6% about a mean of both the bounds. The obtained results are compared with the existing literature wherever applicable. Originality/value To the best of the authors’ knowledge, no study has used lower and upper bound limit analysis, as well as finite elements and SOCP, to estimate the bearing capacity of a surface strip and circular footings lying on layered sand.

Research paper thumbnail of Soft computing based prediction of friction angle of clay

Archives of Materials Science and Engineering, 2020

Purpose: This article uses soft computing-based techniques to elaborate a study on the prediction... more Purpose: This article uses soft computing-based techniques to elaborate a study on the prediction of the friction angle of clay. Design/methodology/approach: A total of 30 data points were collected from the literature to predict the friction angle of the clay. To achieve the friction angle, the independent parameters sand content, silt content, plastic limit and liquid limit were used in the soft computing techniques such as artificial neural networks, M5P model tree and multi regression analysis. Findings: The major findings from this study are that the artificial neural networks are predicting the friction angle of the clay accurately than the M5P model and multi regression analysis. The sensitivity analysis reveals that the clay content is the major influencing independent parameter to predict the friction angle of the clay followed by sand content, liquid limit and plastic limit. Research limitations/implications: The proposed expressions can used to predict the friction angle ...

Research paper thumbnail of Characterization, Durability, and Application of Treated Coir Geotextiles in Low Volume Roads

Journal of Natural Fibers, 2021

Research paper thumbnail of Application Potential of Treated Coir Geotextiles in Unpaved Roads

Journal of Natural Fibers, 2019

Research paper thumbnail of Effect of Chemical Treatment of the Coir Geotextiles on the Interface Properties of Sand–/Clay–Coir Geotextile Interface

Journal of The Institution of Engineers (India): Series A, 2019

Research paper thumbnail of Pressure-settlement behavior of square and rectangular skirted footings resting on sand

Geomechanics and Engineering, 2017

Research paper thumbnail of Effect of diesel and gasoline on the properties of sands — a comparative study

International Journal of Geotechnical Engineering, 2011

... Ghaly, AM, (2001). ... Shin, EC, Omar, MT, Tahmaz, AA, Das, BM, (2002).”Shear strength and hy... more ... Ghaly, AM, (2001). ... Shin, EC, Omar, MT, Tahmaz, AA, Das, BM, (2002).”Shear strength and hydraulic conductivity of oil-contaminated sand.” In: de Mello, LG, Almeida, M. (Eds.), Proceedings of the Fourth International Congress on Environmental Geotechnics, Rio de Janeiro ...

Research paper thumbnail of Experimental and numerical studies of skirted hexagonal footings on three sands

SN Applied Sciences, 2020

Research paper thumbnail of Geotechnical properties of bentonite mixed with nanosilica

Multiscale and Multidisciplinary Modeling, Experiments and Design

Research paper thumbnail of Sensitivity analysis and estimation of improved unsaturated soil plasticity index using SVM, M5P, and random forest regression

Research paper thumbnail of Bearing capacity of embedded and skirted E-shaped footing on layered sand

Journal of Achievements in Materials and Manufacturing Engineering, 2021

Purpose: The purpose of this study is to investigate the ultimate bearing capacity of the embedde... more Purpose: The purpose of this study is to investigate the ultimate bearing capacity of the embedded and skirted E-shaped footing resting on two layered sand using finite element method. The analysis was carried out by using ABACUS software. Design/methodology/approach: The numerical study of the ultimate bearing capacity of the embedded and skirted E-shaped footing resting on layered sand and subjected to vertical load was carried out using finite element analysis. The layered sand was having an upper layer of loose sand of thickness H and lower layer was considered as dense sand of infinite depth. The various parameters varied were the friction angle of the upper (30° to 34°) and lower (42° to 46°) layer of sand, the skirt depth (0B, 0.25B, 0.5B and 1B), the embedment depth (0B, 0.25B, 0.5B and 1B) and the thickness (0.5B, 2B and 4B) of the upper sand layer, where B is the width of the square footing. Findings: The ultimate bearing capacity was higher for the skirted E-shaped footin...

Research paper thumbnail of Study of bearing capacity of skirted irregular pentagonal footings on different sands

Journal of Achievements in Materials and Manufacturing Engineering, 2021

Purpose: The paper presents an experimental and numerical study to evaluate the bearing capacity ... more Purpose: The paper presents an experimental and numerical study to evaluate the bearing capacity of unskirted, singly and doubly skirted irregular pentagonal footings on different sands (S1, S2, S3) at a relative density of 30 %. The skirt depth of the footing was varied from 0.0B to 1.5B (B is the width of the square footing). Design/methodology/approach: The experimental and numerical study of the singly and doubly skirted irregular pentagonal footing resting on sands was modelled in a test tank and Plaxis 3D software respectively. Findings: The results of this study reveal that the bearing capacity was higher for the skirted irregular pentagonal footings on sand S3 followed by sand S2 and S1. The lowest percentage improvement for the singly skirted footing on sand S3 was 18.51% at a Ds/B = 0.25 whereas the highest improvement was 90.81% at a Ds/B = 1.50 for the singly skirted footing on sand S2. The highest percentage improvement for the doubly skirted footing on sand S2 was 95.1...

Research paper thumbnail of Mechanical Behaviour of Bentonite-Cement Mixtures Subjected to Change in Moisture Content

Lecture Notes in Civil Engineering, 2021

Research paper thumbnail of Application of Random Forest Regression in the Prediction of Ultimate Bearing Capacity of Strip Footing Resting on Dense Sand Overlying Loose Sand Deposit

The paper presents the prediction of the ultimate bearing capacity of the strip footing resting o... more The paper presents the prediction of the ultimate bearing capacity of the strip footing resting on layered soil (dense sand overlying loose sand) using random forest regression (RFR). In this study, 181 data collected from literature were used. 71 % of the total data was randomly selected for training the model and the rest of the data were utilized for the testing purpose. The various input parameters were friction angle of the dense sand layer (f1), friction angle of the loose sand layer (f2), unit weight of the dense sand layer (g1), unit weight of the loose sand layer (g2), ratio of the thickness of the dense sand layer below base of the footing to the width of footing (H/B), ratio of the depth of the footing to the width of the footing (D/B) and (H+D)/B. Ultimate bearing capacity was the output in this study. Performance measures were used in order to make the comparison with the artificial neural network (ANN) and M5P model tree. The result of this study revealed that the perf...