Conference Papers

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

Browse

Subject: search.filters.subject.Plaxis 2D

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    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.
  • No Thumbnail Available
    Item
    An Analysis of Piled Slope with Single Row of Piles Using 2D Finite Element Analysis
    (Springer Science and Business Media Deutschland GmbH, 2024) Jose, D.; Kolathayar, S.; Nayak, S.
    The increased frequency of landslides and the associated damages emphasize the need to develop novel techniques for landslide mitigation. Among numerous methods developed till today, an anti-slide pile is an effective tool for controlling slides in landslide-prone areas. The present study assesses the suitability of 2-D FE analysis using the strength reduction method for analyzing a slope stabilized with anti-slide piles. A detailed parametric study was carried out to explore the influence of the position and length of the pile on the factor of safety of pile-reinforced slopes, and the failure mechanism was studied in detail. Fixed head piles improved the safety factor compared to free head piles, and an improvement of 1.5 times was obtained compared with unreinforced slope. Piles located at the crest and toe of the slope were not significantly improving compared to other locations. For fixed head piles, the length of the pile does not affect the factor of safety, and for free head piles, the factor of safety improves with an increase in the length of the pile. For the slope considered in the study, the optimum position of the pile is between the crest and middle portion of the slope, and the optimum length is found to be 20 m for free head piles and 10 m for fixed head piles. The failure mechanism of the piled slope is also explained in detail for each case. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.