G. L. Sivakumar Babu

G. L. Sivakumar Babu
Indian Institute of Science | IISC · Department of Civil Engineering

About

295
Publications
147,230
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4,396
Citations
Citations since 2017
71 Research Items
2879 Citations
20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600
20172018201920202021202220230100200300400500600

Publications

Publications (295)
Conference Paper
A reliability-based design and analysis of reinforced anchors for transmission tower foundations are presented using the Kriging-based response surface method. The improvement of the uplift capacity of anchors in reinforced soil is demonstrated using a three-dimensional numerical model. The initial design of the anchor plate is based on the uplift...
Article
Inclined anchors are used in civil engineering structures where the foundations are expected to resist pullout forces during their operational period. This paper presents a three-dimensional numerical analysis of inclined anchors placed in unreinforced and reinforced sand. The influence of several parameters on the response of inclined anchor plate...
Article
A surrogate model-based response surface method is proposed to predict the maximum wall facing displacement of geosynthetic-reinforced soil (GRS) segmental walls using the multivariate adaptive regression splines (MARS). The synthetic datasets are generated using the Latin hypercube sampling (LHS) technique for both training and testing purposes. F...
Article
Recirculation of leachate in bioreactor landfills accelerates the waste stabilization process. Due to biodegradation-induced changes in waste density, the waste parameters such as hydraulic conductivity and moisture retention characteristics (MRCs) evolve continuously within the landfill. In this study, an approach to evaluate the temporal variatio...
Article
The design of mechanically stabilized earth (MSE) walls depends greatly on the maximum tensile loads developed in the reinforcement layers. In practice, it has been found that the measured tensile loads significantly differ from the predicted values, and it is quantified by a bias value named load bias. It is defined as the ratio of the measured to...
Article
This paper investigates the benefits of using reinforced soil foundations to improve the bearing pressure of shallow foundations on soil using numerical methods. Numerical study of geogrid reinforced soil involves estimation and validation of geogrid properties. Reliability-based design of reinforced soil foundation is performed using kriging surro...
Article
Full-text available
Reliability based design approaches are usually adopted to explicitly consider uncertainties in the rock mass and make decisions on selecting design parameters for tunnel-support problems. However, it is difficult to accurately characterize the input random variables due to fewer sample availability and costly observations. Thus, it is necessary to...
Article
An artificial neural network-based response surface method is proposed to demonstrate the probabilistic performance of the geosynthetic reinforced soil (GRS) walls backfilled with cohesionless soil. Response surfaces are formed either in terms of performance functions or design outputs of the GRS walls using the uniform design method to achieve bet...
Book
This book presents select proceedings of the National conference on Geo-Science and Geo-Structures (GSGS 2020). It provides sustainable solutions to various challenges encountered in the field of geotechnical engineering. The topics presented include advanced characterization to study the behavior of geomaterials, shallow and deep foundations inclu...
Article
Controlling methane emissions from landfills has been a significant concern over the last decades. Researchers have identified the use of landfill cover with oxidative capacity (biocover) as a promising solution to mitigate these methane emissions. However, the geotechnical conditions in a biocover can affect the methane fluxes and the pressure bui...
Article
Geotechnical design considers different limit states of design. Conventional deterministic design methodology uses the factor of safety approach, while reliability-based design and robust design methodology use probability distribution and statistics of properties. In this study, different design methodologies were compared. Efficient probabilistic...
Article
The study aims to investigate the application of anaerobic (AN), aerobic (AER) and semi-aerobic (SA) laboratory scale landfill bioreactors for stabilization of mechanically and biologically treated (MBT) waste of Bangalore city. All major parameters pertaining to the waste, leachate and biogas are continuously monitored during the experiment. Carbo...
Article
The sustainable landfilling concept has several advantages over conventional waste management practices in addressing various socio-economic and environmental concerns. This study presents an overview of the sustainable landfilling concept and various unit processes associated with it. The waste management approaches followed in the city of Bangalo...
Article
Transmission tower foundations experience large vertical uplift forces during their lifetime. These forces can be resisted by providing anchor foundations below the tower. In this study, laboratory experiments were conducted to investigate the pullout capacity of inclined plate anchors in dry sand. The capacity of inclined anchor significantly impr...
Article
Analysis of tunnel-support system stability with uncertain rock mass properties is conducted in this paper. A horseshoe shaped tunnel driven in weak rock mass is analyzed through deterministic, random variable and random field approaches. Performance of the tunnel in probabilistic analysis was assessed by defining three limit states which ensure th...
Article
Methane (CH4) transport in soil is primarily affected by soil physical conditions such as soil-texture and soil-structure, soil-moisture, soil-gas diffusivity, permeability and soil-temperature. Aggregated soils have distinct soil structure with two pore regions characteristics (i.e., inter-aggregate and intra-aggregate regions) and therefore show...
Chapter
Full-text available
The current practices of containing the waste in dumpsite/landfill are considered as unsustainable due to their negative impact on the environment, society and economy. Remediation of the existing open dumpsite into bioreactor landfills helps in recovering the valuable land area at a faster rate due to the reduction in the time required for waste s...
Article
Mining at greater depths can lead to stress-induced failure, especially in areas of high horizontal in-situ stress. The induced stresses around the opening are known to be in a poly-axial stress state where, σ_1≠ σ_2≠ σ_3 with special case of σ_3= 0 and σ_1, σ_2 ≠ 0 at its boundary. The conventional triaxial testing does not represent the actual in...
Article
This paper presents an approach for assessing the failure probability of a road system due to its interaction with landslides induced by the earthquake. The landslide occurrence and failure probability of the road system is estimated by considering the spatial variation of earthquake ground motion. Since significant incoherence in earthquake ground...
Chapter
Properties of soft soils largely influence their behavior and the design scheme of the ground improvement that would be required. The time for 90% consolidation could be estimated theoretically with time factor, coefficient of consolidation, compressibility and permeability. As the reproducibility of these tests is very less, estimating the propert...
Chapter
The hydraulic conductivity of waste is an important parameter that influences the design of leachate recirculation system in a bioreactor landfill. The hydraulic conductivity of waste varies with respect to depth and time in a landfill. These variations can be attributed to the settlement of waste, and the corresponding changes in the void ratio ca...
Article
The long-term safety of radioactive waste disposal facilities is ensured by developing performance assessment models. The general requirement of these models is to assess the risk caused by failure of disposal systems that leads to radionuclide release into the geosphere and their migration toward the near-field biosphere. The radiation dose and ri...
Conference Paper
Full-text available
Reliability based design approaches are usually adopted to explicitly consider uncertainties in rockmass and make decisions on selection of design parameters for tunnel-support problems. However, it is difficult to accurately characterize the input random variables due to fewer sample availability and costly observations. Thus, it is necessary to e...
Article
The most acceptable combination of layer thickness and types of materials used in the different layers of pavement along with an estimated traffic to be carried, during the service life of the pavement, complete the flexible pavement design process. In addition to satisfying the tolerable criteria for fatigue and rutting mechanisms, the pavements a...
Chapter
Early warning systems mitigate landslide risk by providing sufficient lead time to implement actions in order to protect persons or property. However, landslide risk cannot be mitigated effectively by early warning system alone because in the majority of cases it is not possible to transfer settlements and infrastructures within the given lead time...
Conference Paper
The paper investigates ultimate bearing capacity and interference effect of two closely spaced strip footings resting on a rockmass having spatially varying rockmass properties. Rockmass is assumed elastic – perfectly plastic obeying Hoek – Brown failure criterion. This type of rock behaviour is expected for the case of weak and highly jointed rock...
Article
The variabilities or uncertainties of the design properties affect the design significantly, and a systematic approach to capture these variations is essential in the design of foundations. Reliability-based design (RBD) can consider the variations in the design properties in a systematic manner. First-order reliability method estimates reliability...
Article
Full-text available
Probabilistic methods are the most efficient methods to account for different types of uncertainties encountered in the estimated rock properties required for the stability analysis of rock slopes and tunnels. These methods require estimation of various parameters of probability distributions like mean, standard deviation (SD) and distributions typ...
Conference Paper
Full-text available
In this study, the environmental benefits and the feasibility of utilizing landfill gas as an alternative source of energy from two landfill sites of Bangalore and Mysore are evaluated. Bangalore generates around 4,500 tons of municipal solid waste (MSW) per day and the majority of this is collected and disposed in landfills. About 2.1 million tons...
Article
Vertical anchor plates are often provided to increase the performance of various geotechnical engineering structures such as sheet pile walls, bulkheads, bridge abutments and offshore structures. Hence, the safe design of such structures needs a better understanding of the 3D behaviour of the anchor plate. This paper presents and discusses the resu...
Conference Paper
Full-text available
Bangalore generates around 3,500 tons of municipal solid waste (MSW) per day. The current waste management practices involve preliminary mechanical and biological treatment before landfilling. Assessment of the waste management practices followed by the municipality by using life cycle analysis (LCA) is presented in this study. LCA is also used in...
Chapter
Experimental studies on small-scale bioreactor landfills treating mechanically and biologically treated waste under aerobic and anaerobic conditions are presented in this study. The waste was collected from one of the Municipal Solid waste processing units of Bangalore City. The performance of the bioreactors in terms of organic content, gas emissi...
Article
Resilient modulus and permanent deformations are two important aspects which need to be considered in the design of pavements. The use of rollers in the field during pavement construction leads to a higher degree of compaction of material in the vertical direction which alters the properties of the base material used and contributes to stress-induc...
Conference Paper
Full-text available
Support design in tunnels is challenging if the uncertainty in surrounding rock mass is high. Traditional reliability based design approach accounts for this uncertainty by selecting lowest cost design whose reliability index exceeds a threshold value. This traditional design is highly sensitive to the variation in statistics of input parameters (n...
Article
The contaminant transport parameters such as hydraulic conductivity and diffusion coefficient are determined and compared for barrier composed of (1) soil, (2) soil-bentonite (SB), and (3) soil-polymer (SP) mixes. Chloride (Cl−) is taken as the contaminant of interest because it is nonreactive. Sodium bentonite (NaB) and super-absorbent polymer (SA...
Article
Full-text available
A large gold reserve was recently discovered at Haveri district of Karnataka state of India where open pit mining was planned to extract these deposits. Stability analysis for open pit mine slope at this site is presented in the article. Extensive geological investigations and laboratory testing suggested high variability in geological features of...
Conference Paper
The effect of different degree of saturation and compaction on the diffusive properties of soil is studied. Change in the diffusion of nonreactive chloride (Cl⁻) through the barrier soil sample at different degree of saturation is experimentally obtained. Samples prepared at different densities and degrees of saturation are subjected to single rese...
Article
Full-text available
In this study, the role of municipal solid waste (MSW) behavior in the stress-deformation response of interfaces in a lined landfill system was assessed. MSWwas modeled using a constitutive model that considers its time-dependent and degradable characteristics. Effects of compressibility, degradability ofMSW, slope geometry, membrane properties, an...
Article
Near-surface disposal facility is intended for the disposal of low-level nuclear wastes. The reliability analysis of this facility is carried out to estimate the efficiency of the system in containing the nuclear wastes. Subset simulation, an advanced simulation technique, is used for the reliability analysis of the system, and the bootstrap method...
Article
Full-text available
The paper examines the response of square horizontal anchor plate in frictional soil using three-dimensional analysis. The present numerical model is found to closely predict the experimental uplift pressure–displacement relationship. The ultimate uplift load of anchor plate is found to be significantly influenced by its embedment depth, anchor pla...
Chapter
Monumental buildings keep experiencing the distresses due to weathering effects or other reasons. Micropiling had been found very useful for retrofitting works (Srivastava et al. in stability analyses of 18 m deep excavation using micropiles. IGC, N, Delhi, 2016). Kolkata High Court building is a beautiful, majestic building, built in 1872, over a...
Article
Full-text available
The stiffness and strength of the pavement layers are the major parameters that influence the design of highway pavements which in turn decides the thickness of various pavement layers. Studies have shown that the thickness of the base layer plays a crucial role in limiting the rutting of the in situ subgrade soil. Due to the lack of availability o...
Article
Full-text available
The selection of landfill sites for municipal solid waste (MSW) disposal involves consideration of geological, hydrological and environmental parameters which exhibit large spatial variability. Therefore, it is necessary to define, to what extent the chosen sites are reliable such that the probability of environmental pollution and health risks to...
Article
The paper presents results of a comprehensive study on characterization of mechanically biologically treated waste generated in Bangalore, India. Physical, biochemical and engineering characteristics of the waste are presented. The methodology to separate the components of consolidation which includes primary, secondary and biodegradation strains i...
Article
Full-text available
Traditional reliability-based design methodologies often involve selection of design which is of lowest cost and satisfies safety requirements. But, this design is sensitive to variation in statistics of input parameters (noise parameters) and might become unsatisfactory if an underestimation of coefficient of variation of input parameters is made....
Chapter
Full-text available
Assessing landfills in terms of sustainability is a difficult task and needs to be addressed comprehensively. In this paper, we present an initial operationalisation of this approach for a pragmatic legal landfill assessment and its application to assess two prototypic Swiss landfills as part of a pilot study. Thereby, the six generic criteria of S...
Chapter
Full-text available
Sustainable municipal solid waste management has become a challenge to the engineers in the present world. Good pretreatment methods coupled with landfilling are looked as sustainable means of disposal of municipal solid waste. Bioreactor landfill is one such sustainable option. In the present study two landfill simulators (dry and leachate recircu...
Article
Full-text available
The support design for rock tunnels involves a complex problem because of the various types of uncertainties present in rock mass properties; therefore, probabilistic approaches are used to consider these uncertainties systematically in the presented analysis. In earlier studies, uncertainties in peak strength parameters and deformation modulus wer...
Article
Stability analysis of rock tunnels is a complex problem because of various types of uncertainties present in the rock mass properties and hence probabilistic approaches are used to systematically consider these uncertainties in the analysis. While the uncertainty in deformation modulus and peak strength parameters has been considered previously it...
Article
Full-text available
The behavior of landfill depends upon the composition and characteristics of municipal solid waste (MSW) and climatic conditions of the region. MSW undergoes various complex mechanisms such as physical, chemical, thermal and biological processes during its life time in landfills which are difficult to understand. In the present study, an attempt ha...
Chapter
Although there are well-established methods for economic (cost) estimation of any process, the estimation of the environmental and the social effects is relatively less understood and rarely incorporated in engineering calculations. In this paper, the effectiveness of different types of vertical barrier system for a present waste dump is compared i...
Chapter
Full-text available
Understanding of the dynamic properties of municipal solid waste (MSW) and the response of waste landfill for cyclic loads are important for safe seismic design and ensuring sustainability of landfills. This study presents estimation of the dynamic properties through field and laboratory tests of MSW landfill and dynamic response of Mavallipura lan...
Conference Paper
The quantitative assessment of the performance of radioactive waste disposal facilities is an important aspect that needs to be addressed to check its impact on public and the environment. In this paper, near surface disposal facilities (NSDFs), constructed to contain the low level radioactive waste is considered. The performance of these systems i...
Article
The performance of an anaerobic bioreactor in treating mechanically biologically treated municipal solid waste was investigated using experimental and modelling techniques. The key parameters measured during the experimental test period included the gas yield, leachate generation and settlement under applied load. Modelling of the anaerobic bioreac...
Article
As per the regulatory requirements controlling the disposal of radioactive waste, the performance of waste disposal facilities needs to be assessed quantitatively using predictive models. This estimates the potential impact of disposal on the environment and public health. Near Surface Disposal Facilities (NSDFs), constructed to contain the low lev...
Article
Full-text available
The low- and intermediate-level radioactive wastes are generally disposed in near-surface disposal facility (NSDF). The NSDF is composed of engineered barriers. The probabilistic safety assessment model has been developed to analyse the performance of NSDF. The endpoints of the assessment are the concentration of the radionuclide in the groundwater...
Conference Paper
Full-text available
This paper aims to study the hydraulic properties of soil-bentonite and soil-polymer mix. Sodium bentonites are used for the containment barrier applications because of their low hydraulic conductivity which is the result of high swelling of montmorillonite minerals. In addition to rendering low hydraulic conductivity, sodium bentonites are also ef...
Poster
Invitation to submit excellent quality research/practice paper on the topic of Sustainability in Geotechnical Engineering Practices and Related Urban Issues for a Special Issue of Indian Geotechnical Journal in 2017. Important Dates: Last date for full paper submission(online): April 30, 2017. Last date for submission of revised tentatively accepte...
Article
Full-text available
The paper presents the reliability-based approach to assess the performance of landfill considering uncertainties associated with the hydraulic properties of various components of the system. A model domain having final cover system and municipal solid waste (MSW) layer is considered as an integrated system for the analysis. Water balance is comput...
Book
This compilation on sustainability issues in civil engineering comprises contributions from international experts who have been working in the area of sustainability in civil engineering. Many of the contributions have been presented as keynote lectures at the International Conference on Sustainable Civil Infrastructure (ICSCI) held in Hyderabad, I...
Article
The potential of bioreactor landfills to treat mechanically biologically treated municipal solid waste is analysed in this study. Developing countries like India and China have begun to investigate bioreactor landfills for municipal solid waste management. This article describes the impacts of leachate recirculation on waste stabilisation, landfill...
Article
Geocell reinforcement has found a large applicability in the area of pavement engineering, and its deformation characteristics play an important role in the analysis and design of pavements. In the present work, a simple analytical approach that idealizes geocell reinforcement as a beam subjected to vertical symmetrical loads and foundation soil as...
Article
Full-text available
The study presents a recent slope failure in India which resulted in the burial of a village and claimed large number of lives. Current methods of probabilistic back analysis incorporate uncertainty in the analysis but do not consider spatial variability. In this study, back analysis is performed using Bayesian analysis in conjunction with random f...
Article
Full-text available
In the present study, reliability analysis of near surface disposal facility is performed, by assessing the probability of sequential failure of the multi barrier system using the contaminant transport model. The concentration and dose rate of the radionuclide evolve with time hence there is a need for time dependent reliability analysis. Due to th...
Article
Forensic geotechnical engineering is an emerging discipline with a focus on understanding what went wrong, what could have happened and how failures can be prevented using engineering analysis principles in the case of failures of geological/geotechnical origin. In recognition of the importance of the topic, the International Society for Soil Mecha...
Conference Paper
Full-text available
Nuclear power is an efficient source of power generation with low carbon emissions. But one of the serious problems encountered in the nuclear industry is the development of proper disposal facilities for radioactive waste. The safety of a waste disposal facility depends on the efficiency of its design against contaminant migration. The transport m...
Conference Paper
Full-text available
Landfill stability is one of the most important concerns in the landfill design and operation. Several slope failures in the past decade highlight the need for the detailed analysis of landfill stability. These failures are attributed to reasons such as heterogeneous composition, improper evaluation of shear strength parameters and the effects of m...
Chapter
In this paper result of forensic analysis of a cantilever retaining wall for road approach embankments which showed distress in the form of translation, vertical settlements and rotation is presented. Extensive geotechnical soil investigation and field measurements of distress are collected. The paper presents prominent causes of failure of cantile...
Conference Paper
The safety assessment and reliability analysis are the two critical factors that affect the design of a complex structured system. In this paper, safety assessment model is used and the radiation dose of radionuclides are evaluated. The model is developed based on single dumping mode of disposal. In the present paper, radioactive carbon (14 C) is c...
Article
Probabilistic sensitivity analysis is a crucial tool in the uncertainty analysis of systems, which allows the understanding of how the uncertainty in the output response can be apportioned to different sources of uncertainty in the input parameters. Sobol’s method is a widely accepted global sensitivity analysis (GSA) technique that has been applie...
Article
Full-text available
Landfill stability and deformation analysis is one of the most important concerns in the municipal solid waste (MSW) landfill design and operation. Estimation of landfilling capacities based on deformation characterization of MSW assumes considerable significance in the estimation of additional landfilling capacity before closure. In the analysis,...
Article
Full-text available
In the analysis and design of municipal solid waste (MSW) landfills, there are many uncertainties associated with the properties of MSW during and after MSW placement. For the analysis of time dependent settlement response of MSW, a composite compressibility model that accounts for instantaneous compression under the applied load, time dependent me...
Article
Full-text available
In this paper, results of forensic analysis of a cantilever retaining wall for road approach embankments which showed distress in the form of translation, vertical settlements and rotation is presented. Extensive geotechnical soil investigation and field measurements of distress are collected. The paper presents prominent causes of failure of canti...