Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Author: search.filters.author.Venkataramana, K.Subject: search.filters.subject.Displacement

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    Response Analysis of Berthing Structure with Soil–Structure Interaction
    (Springer Science and Business Media Deutschland GmbH, 2022) Shettigar, S.; Jayalekshmi, B.R.; Venkataramana, K.
    The berthing structures including piles and diaphragm walls are supported on soft marine soils. The soft soils under severe loading are likely to undergo vertical and lateral movement. The anchored diaphragm wall is provided to support the open berth structure against backfill. In this paper, finite element analysis of berthing structure has been carried out using a finite element program ANSYS APDL. The soil strata is modelled as 3D continuum. The response analysis of diaphragm wall for different pretension forces in anchor rod has been carried out. The variation in displacement, shear force and bending moment along the depth of wall is plotted. The result is compared with the case without considering soil–structure interaction. The optimum value of pretension force is obtained as 1050 kN which effectively reduced the deflection of diaphragm wall. The percentage increase in maximum lateral displacement, shear force and bending moment of wall without considering soil–structure interaction effect was found to be 25.265%, 52.523% and 892.944%, respectively. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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    Seismic Slope Stability Analysis Using Pseudo-static Approach
    (Springer Science and Business Media Deutschland GmbH, 2024) Mishra, P.; Venkataramana, K.
    Ensuring the stability of slopes under the action of an earthquake is always a challenging problem for geotechnical engineers. As earthquake is one of the major factors responsible for the failure of slopes, it becomes necessary to carry out comprehensive research on the stability analysis of slopes subjected to earthquake-induced loads. Many researchers have developed several methods to analyse the stability behaviour of slope, but till now the failure behaviour has not been understood properly because of the complexity of earthquake loading. With the above background, this study presents a numerical analysis, performed in PLAXIS 3D, to investigate the stability of slopes subjected to earthquake-induced loadings using pseudo-static approach. Also, parametric studies have been carried out to better understand the effects of different parameters (soil properties, slope dimensions, earthquake loadings, etc.) on the Factor of Safety (FOS) and displacement of the slope. The stability of a slope is best assessed in terms of its FOS, which is computed by the strength reduction technique. Analyses’ results show that the slope can sustain a maximum displacement of 442.80 mm, while slope height is varied till the failure point keeping all other parameters constant. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.