Conference Papers
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Item A Study on Trenching Techniques for Vibration Isolation: An Overview(Springer Science and Business Media Deutschland GmbH, 2021) Bariker, P.; Kolathayar, S.This paper presents a detailed review of past research studies on trenching techniques for vibration isolation. With rapid urbanization and fast-growing infrastructures in developing countries like India, it is very likely for many structures subject to vibrations from earthquakes, traffic movements, or machine vibrations. Though the trench technique for vibration screening is an established technique, there has been a lot of advancements in vibration screening in recent years. This paper presents an overview of the developments in trenching techniques for vibration screening from its inception to the latest advancements. The studies have been categorized into laboratory element/model tests, field tests, and numerical analyses. The review of studies highlights that the open trenches perform better isolation for shallow depths whereas the infilled trenches perform better than open trenches when the normalized depth of trench is deeper. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Analysis of Strength Properties of Cement-Stabilized Soil at Different Moulding Water Contents(Springer Science and Business Media Deutschland GmbH, 2021) Bariker, P.; Kori, A.; Hulagabali, A.M.In the present study, an attempt is made to evaluate the strength properties of red soil mixed with ordinary Portland cement. A series of standard proctor Tests, unconfined compression strength tests, direct shear tests and split tensile strength tests were performed on samples of red soil with a mixture of 6, 9 and 12% at an increment of 3% of ordinary Portland cement. The tests were conducted on red soils with specific gravity of 2.59 subjecting those to above-specified tests as per Indian Standards IS: 2720. At each mixture of each percentage of ordinary Portland cement sand, peak frictional angle and soil cohesion were found out by conducting direct shear tests. Most of the direct shear tests were conducted to shear strain in excess of 30%, and the stress–strain response was observed and recorded. Also in the present work, the comparison in strength properties was done between the soils at wet of optimum and dry of optimum for all above-mentioned tests. The present trend of results was also matched with those of previous works. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Appraisal of Innovative Finned-Pile Foundations to Resist Lateral Loads(Springer Science and Business Media Deutschland GmbH, 2022) Bariker, P.; Kolathayar, S.Multistoried buildings are subjected to a significant amount of lateral forces due to winds and earthquakes in onshore structures and forces due to water currents and heavy winds in offshore structures. Foundations supporting such structures as offshore wind turbines should resist extensive lateral forces and pullout forces. To sustain these loads, innovative types of pile foundations need to have experimented with in place of regular pile foundations for more economic and efficient performance. In this paper, an attempt is made to demonstrate the efficiency of adopting finned-piles concerning previous literature studies. This work highlights some of the experimental investigations, model studies, and numerical studies (FEM, FDM) adopted to find the usefulness of finned-piles in resisting the lateral loads. Some of the key-points of adopting such foundations are discussed. Finally, future untapped avenues explored on finned piles are also brought out in the paper. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Assessment of Effect of Deep Excavation on Adjacent Structures Using Finite Element Analysis(Springer Science and Business Media Deutschland GmbH, 2022) Hulagabali, A.M.; Bariker, P.; Solanki, C.H.; Dodagoudar, G.R.Deep excavations and its impact on neighboring buildings is one of the most important issues when planning to construct new facility. In metropolitan city, it’s a challenging task for the execution of underground construction due to limited space and high cost of land. Hence, this implies that deep excavation has become necessary for the proper utilization of available space. Therefore, it’s important to make sure that adjacent structures are safe against deep excavation-induced deformation. In this study, a two-dimensional Finite Element Method in PLAXIS 2D has been chosen for the soil–structure analysis of deep excavation supported by contiguous pile wall located in Addis Ababa. For the numerical analysis two constitutive models Mohr–Coulomb and Hardening Soil have been applied in drained effective stress condition. The objective of this study is to investigate the effect of deep excavation on adjacent structures by considering support stiffness, ground water condition, neighboring building distance from face of excavation, and building load. The analysis of this study monitors parameters like maximum lateral wall deflection (δhm), maximum settlement (δvm), angular distortion of the neighboring structures, horizontal strain, and maximum bending moment of contiguous pile wall. Moreover, normalization of lateral wall deflection (δhm/He) and settlement (δvm/He) to the excavation depth (He) and neighboring building distance-excavation (D/He) has been presented. Parametric studies have been carried out by varying parameters of diameter of contiguous pile wall, horizontal anchor spacing, and pre-stress force of anchor. The analysis result has been recorded in terms of lateral wall deflection, ground settlement, and bending moment. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Numerical Simulation of Field Vane Shear Test Using Finite Element Method(Springer Science and Business Media Deutschland GmbH, 2022) Hulagabali, A.M.; Bariker, P.; Solanki, C.H.; Dodagoudar, G.R.One of the most versatile and widely used devices for investigating the undrained shearing strength and sensitivity of soft deposits of clay is the field vane shear test. However, despite its common usage, the interpretation of the vane test has been quite often a controversial issue. Thus, this paper aims to analyze the effects of vane blade thickness and the conventional interpretation of determining shear strength from the vane shear test using the finite element method. The soil stress–strain response has been simulated using the Mohr–Coulomb constitutive model and the Hardening soil model. The sensitivity analysis of boundary conditions has been performed to select the best boundary condition among the different alternatives and to use it properly to get better output for further analysis. The results of numerical simulations have been compared with the conventional interpretation results in verifying and analyzing the performance of the numerical model. It is observed that the measured torque at failure obtained from PLAXIS 3D using the Hardening soil model fits well with the result from the theoretical calculation. However, the Mohr–Coulomb gave too large the torque at failure and the big difference between simulated and hand calculation. The measured undrained shear strengths are inversely proportional to the perimeter ratio of the vane and the same type of soil but different blade thickness, the undrained shear strength can vary significantly. The failure geometry around the blade is recognized in the plastic points, more emphasized at the top than in the middle of the device. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.Item Effect of Load Inclination on the Lateral Resistance of Belled Piles: A Numerical Approach(Springer Science and Business Media Deutschland GmbH, 2025) Bariker, P.; Kolathayar, S.Belled piles are commonly used in geotechnical engineering to provide foundation support in unstable soils. These piles are characterized by an enlarged base, increasing the pile’s load-bearing capacity. Inclined loads are experienced in various engineering applications, such as retaining walls, bridge abutments, and slope stabilization. This study conducts a numerical analysis of belled piles subjected to inclined loads using a finite element approach. The present study investigates the behaviour of belled piles under inclined loads and evaluates their performance in terms of deformation, stress distribution, and load-carrying capacity. The model considers the interaction between the pile and the surrounding soil. The inclined load is applied at various angles to investigate its effect on the pile response. The numerical analysis reveals that several factors, including the angle and magnitude of the applied load, the L/D ratio and the geometry of the belled pile, influence the behaviour of the belled pile under an inclined load. The results show that the deformation and stress distribution in a pile is influenced by the inclination angle of the applied load, with higher inclination angles resulting in larger pile deformations and stress concentrations at the base of the pile. The lateral resistance of the belled pile with a bell angle of 3° significantly carries 21% more load than that of 7°. The findings of this study provide insights into the behaviour of belled piles subjected to inclined loads. They can be used to guide the design and analysis of belled pile foundations in geotechnical engineering projects. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.