Browsing by Author "Banerjee P.K."

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    Nonlinear pile-soil-structure interaction under transient impact loading
    (2002) Küçükarslan S.; Banerjee P.K.
    Nonlinear pile-soil-structure interaction is formulated by using finite element and boundary element methods. Thus, the main idea in using this technique is to get computationally efficient results when comparing with 3D boundary element elastodynamic formulations. Linear beam column finite elements are used to model the piles and structural elements. Numerical modeling of soil media is done by introducing a rational approximation to continuum with nonlinear interface springs along the piles. By using this mixed type of formulation, it is possible to get computationally most efficient and accurate results.
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    Behavior of axially loaded pile group under lateral cyclic loading
    (Elsevier BV, 2003) Küçükarslan S.; Banerjee P.K.
    In this paper, a hybrid boundary element technique is implemented to analyze behavior of axially loaded pile group under lateral cycling loading. Nonlinear material behavior of soil is introduced by a rational approximation to continuum with nonlinear interface springs along the piles. Linear beam column finite elements are used to model the piles. By enforcing displacement and equilibrium conditions at each increment, a system of equations is generated which yields the solution. A numerical study to verify the proposed model is performed. To investigate the cyclic behavior three groups are loaded (1×2, 2×3, and 3×3 groups) initially half of the ultimate axial load, then a lateral loading is applied for cyclic behavior of piles, is done to investigate the behavior of pile groups. © 2002 Elsevier Science Ltd. All rights reserved.
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    Inelastic analysis of pile soil structure interaction
    (Elsevier BV, 2003) Küçükarslan S.; Banerjee P.K.; Bildik N.
    In this paper, inelastic pile soil structure interaction is analyzed by using a hybrid type of numerical method. Piles and structural elements are modeled as linear finite elements and soil half space is modeled by using boundary elements. Inelastic modeling of soil media is presented by introducing a rational approximation to continuum with nonlinear interface springs along the piles. For this purpose, modified Özdemir's nonlinear model is implemented and systems of equations are coupled for piles and pile groups at interacting nodes. To verify the proposed algorithm, four experimental results from previously conducted tests under static loads are compared with those obtained from present analysis. © 2003 Elsevier Science Ltd. All rights reserved.
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    Inelastic dynamic analysis of pile-soil-structure interaction
    (Imperial College Press, 2004) Küçükarslan S.; Banerjee P.K.
    In this paper, inelastic pile-soil-structure interaction for dynamic analysis is formulated by coupling finite element and boundary element methods. Linear beam-column finite elements are used to model the piles and structural elements. The continuum is assumed to be elastic and an efficient step by step time integration scheme is implemented by using half space integral formulation. Inelastic modeling of soil media is done by a rational approximation to continuum with nonlinear interface springs along the piles. Modified Özdemir's inelastic model is implemented and systems of equations are coupled for piles and pile groups. By using this mixed type of formulation, it is possible to get computationally most efficient and accurate results. In order to verify the proposed formulation, the result of a reported full-scale statnamic load tests are compared.
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    Inelastic analysis of pile-soil interaction
    (2004) Küçükarslan S.; Banerjee P.K.
    In this paper, inelastic pile-soil interaction is analyzed by using a hybrid type of numerical method. Piles are modeled as linear finite elements and the soil half-space is modeled using boundary elements. Inelastic modeling of the soil media is introduced by a rational approximation to a continuum with nonlinear interface springs along the piles. For this purpose, a modified Özdemir's nonlinear model is implemented and systems of equations are coupled for piles and pile groups at interacting nodes. To verify the proposed algorithm, three experimental results from previously conducted tests on piles under static axial and lateral loads are compared with those obtained from the present analysis. © ASCE.