Vinay Bhushan Chauhan

Madan Mohan Malaviya University of Technology, Gorakhpur (U.P.) India | MMMEC · Department of Civil Engineering

The usage of reinforcement in the soil mass has resolved the issue of scarcity of suitable land for construction. It has enabled the wise utilization of problematic soils with the application of geotextile as reinforcements. Out of many alternatives of the utilization of geotextile material as a reinforcement element for the soil, the provision of...

Brick is one of the common and vital construction materials which is used in all masonry works. A large land area is required for acquiring the voluminous quantity of the clay for brick manufacturing. An alternative material for clay, if burnt into brick, needs to be identified that can be added in brick as a replacement of clay in such a quantity...

Out of numerous available methods to reduce the lateral earth pressure on the retaining structures, a retaining wall with relief shelves, though known for more than a few decades, is one of the least practiced approaches to minimize the earth pressure on a wall due to the complex behavior of such walls as well as the lack of design recommendations...

In this study, the effect of an eccentric load on the ultimate bearing capacity (UBC) of a strip footing of width B resting above a circular cavity in the rock mass is investigated using upper-and lower-bound finite-element limit analysis incorporating an adaptive meshing technique. The effect of governing independent variables, such as the diamete...

In this study, the impact of the presence of a compressible clay layer on the ultimate bearing capacity (UBC) of a strip footing supported by a lay-ered soil stratum is evaluated using Adaptive Finite Element Limit Analysis (AFELA). The normalized depth of the compressible layer (H/B), internal friction angle of the sandy soil (ϕ), and undrained sh...

Retaining wall with relief shelves is being increasingly adopted to provide an economical and sustainable solution for earth retention purposes. The current study aims to evaluate the effectiveness of relief shelves in mitigating lateral thrust on a rigid, non-yielding retaining wall subjected to static surcharge loading. A comprehensive numerical...

In this study, a finite element limit analysis-based numerical simulation is carried out using an adaptive mesh refinement technique to investigate the influence of a circular void/cavity having a diameter, d v , on the ultimate bearing capability (UBC) of a strip footing with a width, B resting over rock mass and subjected to a centrally placed li...

In this study, the Multivariate Adaptive Regression Splines (MARS) model is employed to create a data-driven prediction for the bearing capacity of a strip footing on rock mass subjected to an inclined and eccentric load. The strengths of rock masses are based on the Hoek-Brown failure criterion. To develop the set of training data in MARS, the low...

This paper investigates the influence of a circular void on the ultimate bearing capacity (UBC) of a strip footing subjected to uniformly distributed load resting on the rock mass, using adaptive finite element limit analysis. To assist the practicing engineers in their work, a dimensionless reduction coefficient, Rc, has been evaluated and present...

Back-to-back mechanically stabilized earth (BBMSE) wall is a specific case of modern earth retention technique, where the design of the wall system depends on the spacing between two walls as the limited space behind the wall controls the interaction between them as well as their stability and lateral earth pressure distribution along the wall heig...

Modernization, industrialization and rapid changes in the modern lifestyle have resulted in massive waste materials in the environment. Scientists are continuously evolving innovative ways for efficient reuse/recycling and the safe disposal of waste materials. This study explores potential waste materials reuse in additive stabilization of a fair t...

Analysis of slope stability is a classic issue with immense consequences in geotechnical engineering. Using a two-dimensional finite element analysis tool, the present study investigates the influence of different distribution patterns in the soil slope reinforced with geogrid on the shear failure plane and stability of the slope under gravity and...

This study employs a two-dimensional plane strain finite element limit analysis method to examine the stability of fully-braced excavations in non-homogeneous clay. The excavation has a width (B), a depth (H), and an embedment depth of the rigid wall (D). The clay is considered to obey the Tresca failure criterion in the simulation of the finite el...

This book presents the basic description of soils, rocks and other similar materials of India with a focus on the subsurface investigation in its 28 states and 8 union territories. An attempt has been made to cover more geological and geotechnical engineering aspects. It includes the ground subsurface details in terms of boring logs, project site p...

This paper presents the numerical study based on the adaptive finite element analysis of the bearing capacity of a strip footing on reinforced soil mass. A parametric study has been conducted to estimate the ultimate load-bearing capacity of footing having a width, B resting over reinforced soil mass (qult, R) using wraparound ends configuration of...

Retaining walls with pressure relief shelves bring a substantial reduction in lateral earth pressures acting on these walls, and they have been increasingly used in various infrastructure projects in several countries for more than a decade. However, due to the complexity of soil–wall–relief shelf interaction, the lateral earth pressure distributio...

Strip footing needs special attention when substantial underground voids of significant dimensions occur in natural rocks since voids can compromise structural integrity. This paper uses a numerical simulation, based on finite element limit analysis with adaptive mesh refinement technique, to evaluate the effect of a circular void in the rock mass...

Failure of the soil slopes by dynamic excitation is one of the most vital geotechnical earthquake hazards which may lead to serious destruction to the bridge abutments, dams, embankment, and structures resting on the slope. Moreover, due to deficient space available for the construction of slopes in urban areas, high and steep slope is constructed...

A numerical parametric study using the finite element program of OPTUM G2 was performed on single, double, and triple anchored sheet piles systems retaining sandy soil. The present paper evaluates the variation of maximum shear force distribution, bending moment distribution, and displacement of soil and sheet pile wall concerning different depths...

An essential requirement during the design of structures is a rational assessment of the ultimate bearing capacity of the footing resting on rock mass (qu). The qu is influenced by several parameters, and the simultaneous consideration of all such factors during the assessment of ultimate bearing capacity is a cumbersome process. Considering that t...

The land scarcity has built up the pressure on the engineers to bring a cost-effective and time-saving solution to utilize the ground with poor strength as a foundation bed for various structures. With the recent progress in the area of ground reinforcing techniques using geosynthetics, the extensive usage of geotextile materials as a reinforcing e...

With the advent of ever-growing urbanization and industrialization, there exists a requirement for heavy infrastructures that can retain heavy earth masses and are sustainable in its functioning. The conventional earth mass retention methods using rigid retaining walls are not preferred for most of the projects, as they are expensive and are time-c...

Over a previous couple of decades, there is a rise in research related to the use of synthetic fibers as soil reinforcement materials due to their availability, economy, and growth in recognition of sustainable development. As an outcome of rapid urbanization, an enormous amount of construction work is going on throughout the world, and due to the...

Soil nailing is an efficient in-situ ground improvement technique that is being used extensively in the field to stabilize the unstable artificial or natural soil slopes. In this paper, a parametric study is done by varying the soil nailing parameters, namely the length (L) and the inclination of soil nails (α), with respect to the horizontal for a...

Piled raft foundations (PRFs) are essential for improving the load-bearing capacity of the foundation and for controlling the total and differential settlements. For an efficient design of the foundation for high-rise buildings, components of PRF such as length, diameter, and raft thickness are important factors. This study aims to examine the inte...

The advent of industrialization and unrestrained urbanization created a demand for the construction of heavy engineering infrastructures which caused extensive environmental deterioration. Also, the construction industry generates huge waste in the form of demolished material and recycled material. Therefore, the need of the hour is to explore all...

This article examines the stability of retaining walls with relief shelves compared to the conventional cantilever wall using limit analysis integrating with the finite element method. The performance of such walls subjected to an incremental static uniformly distributed surcharge loading on the backfill surface is accessed in the terms of the magn...

Whenever a need arises to construct a high retaining wall, the construction of a mechanically stabilized earth (MSE) retaining wall in a multi-tiered configuration is a viable approach than the construction of a single-tiered (rectangular wall). However, the behavior of multi-tiered MSE walls is complex, and unfortunately, the behavior of such wall...

The use of geosynthetic reinforcement to enhance the ultimate load-bearing capacity and reduce the anticipated settlement of the shallow foundation has gained sufficient attention in the geotechnical field. The improved performance of the shallow foundation is achieved by providing one or more layers of geosynthetics below the foundation. The full...

The scarcity of competent load-bearing strata for the foundation of the various structure has built pressure on geo-technicians to use the soil with poor strength employing numerous ground modification techniques. Reinforcing soil strata using geotextile material is a well-established, cost-effective, and proven methodology to improve the bearing c...

Soil nailing is commonly used to stabilize cut slopes and earth retaining structures, embankments and sometimes to reduce the lateral earth pressure on retaining wall. This is an in-situ reinforcement technique that uses passive rigid bars usually made up of steel that can withstand tensile forces, shearing forces, and bending moments. In the prese...

Reinforcement in the soil can be used to enhance the behavior of retaining walls under seismic loading in terms of improved overall stability of the structure. Mechanically Stabilized Earth (MSE) retaining walls, referred to as “segmental” retaining walls owing to their use of segmental blocks as facing elements for rein-forcement, have been extens...

This study intends to examine the behavior of a GRS wall with static footing loading above it, while varying the positions of the footing. For the study of behavior of such complex structure, finite element modeling is handy and enables to look into the various stress/strain developed in the numerical model. In view of the above, a series of finite...

Mechanically Stabilized Earth (MSE) retaining walls, reinforced by the geogrids and using rigid segmental blocks as facing elements have extensively been used in recent past as an economic and sustainable solution for the earth retention. Nevertheless, in the case of a high retaining wall, tiered walls are preferred than a single-tier retaining wal...

Piled raft foundations are essential for improving the load-bearing capacity of the foundation and for controlling the total and differential settlements. For an efficient design of the foundation for high rise buildings, components of piled raft foundation such as length, diameter, and raft thickness are important factors. This study aims to exami...

Soil nailing is an efficient in-situ ground improvement technique that is being used extensively in the field to stabilize the unstable artificial or natural soil slopes. In this paper, a parametric study is done by varying the soil nailing parameters namely, the length (L) and the inclination of soil nails (α) with respect to the horizontal for a...

The hybrid modular construction is an innovative approach and a revolutionary alternative to traditional building construction practices in the field of construction and technology. This innovative technology has fundamentally changed the methods that the construction industry has worked on. The hybrid modular construction relies on the idea of mak...

Over a previous couple of decades, there is a rise in research related to the use of synthetic fibers as soil reinforcement materials due to their availability, economy, and growth in recognition of sustainable development. As an outcome of rapid urbanization, an enormous amount of construction work is going on throughout the world, and due to the...

The advent of industrialization and unrestrained urbanization created a demand for the construction of heavy engineering infrastructures which caused extensive environmental deterioration. Also, the construction industry generates huge waste in the form of demolished material and recycled material. Therefore, the need of the hour is to explore all...

In the present study, an attempt is made to evaluate the ultimate pullout capacity of the vertical helical plate anchor embedded in clay with a number of geometrical configurations using the limit analysis based on the finite element method. Ultimate pullout capacity (qu) of single and multiple helical plate anchors are determined using numerical a...

Present study discusses the behavior of an anchored sheet pile wall supporting a wide excavation based on the analysis using a computational tool based on the finite element method. The soil is modeled using the Mohr-Coulomb material and the sheet pile wall is modeled using the plate elements. A parametric study using numerical modelling is perform...

Soil reinforcement using Geogrid in the retaining wall is used to strengthen the overall structure to improve the stability of the retaining wall system as well as the behavior of the structure under the seismic loading. With reference to the construction of a conventional rigid retaining wall, the provision of geogrid reinforcement is much appreci...

Plate anchors play a significant role in the stabilization of various geotechnical structures. In recent years, the use of helical anchors has extended beyond their traditional use in the foundations. Faster installation and instant loading capabilities have increased their use in multiple infrastructure applications. Through the past few decades,...

The present study attempts to investigate the possible reasons behind the failure of a cantilever retaining wall with relief shelves which is located in the populated area of Hyderabad city, India. This study is carried out using an analytical model based on static force analysis for a retaining with relief shelves to provide the most possible reas...

This poster is based on the first author's Ph.D. Research and won the First Prize among all the participants of the department.

The present study is conducted to investigate the effectiveness of relief shelf to reduce the lateral thrust on rigid non-yielding retaining wall, through a small-scale physical model test in laboratory. The height of the model retaining wall was 700 mm, and five earth pressure sensors were used to measure the lateral pressures along the height of...

Performance of retaining under various loading conditions depends on the types of backfills, however many lightweight fills material like EPS geofoam, geoboard, fly ash, waste tyre (in many forms) etc. are being extensively used as backfill material. The primary advantages of using these lightweight materials are the reduction in total lateral thru...

Mumbai marine clay is problematic in nature for substructures and it needs to be strengthening before making it available for any construction activity. Out of many available geotechnical solutions, stone columns are quite handy in significantly improving the bearing capacity of marine clay, which also supplements by dissipating excess pore water p...

Earth pressure on a retaining wall decides the sectional dimensions of the wall, and there have been several attempts in the literature to reduce the earth pressures on the retaining walls, by using techniques such as lightweight backfill and placement of compressible inclusions at the wall-backfill interface, to name a few. A retaining wall with p...

Present study investigates the influence of spatial variability of soil properties on the lateral thrust on a rigid retaining wall in active condition. Friction angle of the soil is modelled as a lognormal anisotropic random field in two dimensions, using the Cholesky decomposition technique to study the effect of horizontal and vertical scale...

In the present study, effectiveness of EPS geofoam on reduction of lateral earth pressure has been studied using numerical computation tool FLAC 3D. Earth pressure distribution on wall, backfill surface settlement and geofoam compression are computed and compared to evaluate the effectiveness of various geofoam densities in reducing the lateral ear...

The present study investigates the influence of spatial variability of soil properties on the lateral thrust and failure surface of a 6 m high frictionless rigid earth retaining wall in active condition. The drained friction angle of the soil is modelled as a log-normal anisotropic random field in two dimensions, using the Cholesky decomposition te...

Assessment of magnitude and distribution of lateral earth pressure on retaining wall under various loading conditions has been a area of research for geotechnical engineers as the total thrust on wall is the key factor to decide the sectional dimensions of retaining wall. By reducing this lateral earth pressure on wall, sectional dimensions of wall...

The study involves comprehensive finite difference numerical analysis to examine the possible reason of failure of retaining wall with relief shelves. It is found that use of larger width of relief shelves has significantly increased bending stress in relief shelf as well as on the faces of stem of wall just the relief shelves. This unanticipate...

The objective of the present study is to understand the swelling behavior of the expansive soil and also examine the reduction of swelling pressure using EPS (expanded polystyrene) geofoam with the help of a 3-D numerical model developed in FLAC 3D. Four cubic soil samples of size 0.5m, 1m, 2m and 5m are chosen to study the effect of soil sample si...

This paper presents a numerical study on a 6m high non-yielding rigid retaining wall with relief shelves. This study aims to present a comparative investigation of lateral earth pressure distribution with and without relief shelves using finite element software (ABAQUS). The findings of the numerical analysis showed that use of relief shelf can sub...

Present study attempts to investigate the possible reasons behind the failure of a cantilever retaining wall with relief shelves, which is located in the heart of Hyderabad city, India. A pressure relief shelf is a finite width, thin horizontal cantilever platform extending into the backfill, which are constructed monolithic with the stem of the re...

Reliability of experimental results depends on several factors, and sample preparation is one of the important phases of any experimental investigation in the laboratory. Preparation of consistent samples is a prerequisite to check the repeatability of test results of an experiment, and often samples need to be tested to verify whether the preparat...

Rigid non-yielding retaining walls are made usually as gravity retaining walls. These gravity retaining walls are bulky in size. There may be situations where high retaining walls are required to resist the lateral earth pressure. However, massive gravity walls may not be viable due to economic and space constraints. Also, in some cases, sufficient...

Skirted foundations are one of the offshore shallow foundations, which are used in offshore oil and gas industries. In offshore environment, foundations are subjected to large components of combined horizontal (H), moment (M), torsion (T) loading as compared to vertical loading (V) due to water waves, wind loading etc. These loads change frequently...

Soft soils exhibit phenomenon of volumetric change due to change of water content. This behavior of volumetric change of soil with water content needs to be studied properly for better estimation of swelling pressure. A numerical model is studied in FLAC 3D to predict the swelling pressure of an expansive soil.

Pipes buried in expansive soils undergo severe stresses due to volumetric change owing to change of moisture content. A three dimensional numerical model is developed in FLAC 3D to study the effect of expansive soil on buried pipe. A parametric study has been conducted to study the variation pipe thickness on pipe deflection profile.

A numerical study is conducted to evaluate the effectiveness of EPS geofoam to reduce surcharge induced earth pressures and total lateral thrust on non-yielding rigid retaining wall.

Precise assessment of pressures acting on any surface of an object or medium due to surrounding material is vital, especially while dealing with civil engineering structures, in order to optimize the design and economize the cost of structure. Some of the classical examples where pressures play an important role are retaining structures, silos, b...

Preparation of uniform and repeatable sand beds of required density is a prerequisite for obtaining reliable results from laboratory tests on reconstituted sand specimen. A portable traveling pluviator (PTP), working on the principle of air pluviation, is used in the present study to achieve the above objectives. PTP is a simple device which is wid...

This paper presents results of small scale physical model tests conducted on instrumented gravity retaining wall subjected to combined surcharge and seismic loading. The efficiency of compressible geo-inclusion, in the form of EPS geofoam, to reduce lateral thrust on the wall was evaluated. Initially surcharge pressures were applied on the surfac...

In the present study the response of rails, treated as infinite beams, resting on geosynthetic-reinforced granular fill on top of stone-column-treated soft soil, was studied under the action of moving loads. The granular fill layer was modelled as a Pasternak shear layer and the extensible geosynthetic layer as a rough elastic membrane. The stone c...