Seismic Stability

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V. S. Ramakrishna Annapareddy - One of the best experts on this subject based on the ideXlab platform.

  • A Strain Dependent Approach for Seismic Stability Assessment of Rigid Retaining Wall
    Geotechnical and Geological Engineering, 2020
    Co-Authors: Sanjay Nimbalkar, Anindya Pain, V. S. Ramakrishna Annapareddy
    Abstract:

    A new method is proposed to evaluate the Seismic Stability of a rigid retaining wall undergoing translation or rotational failure. In the present method, strain-dependent dynamic properties are used to assess the Seismic Stability of rigid retaining walls against sliding and overturning failure conditions. The effect of foundation soil properties on the Stability of retaining walls is also considered. From the parametric study, it is observed that the foundation soil properties have a significant effect on both sliding and rotational Stability of rigid retaining walls. This can be attributed to the use of strain-dependent dynamic properties and the consideration of foundation soil properties. The predictions of the proposed method are compared and verified against the results from other methods proposed in the past. The percentage increase in the results compared to the existing literature is a maximum of 10 and 28% for rigid (bedrock) and flexible (sand deposit) foundation, respectively.

Sanjay Nimbalkar - One of the best experts on this subject based on the ideXlab platform.

  • A Strain Dependent Approach for Seismic Stability Assessment of Rigid Retaining Wall
    Geotechnical and Geological Engineering, 2020
    Co-Authors: Sanjay Nimbalkar, Anindya Pain, V. S. Ramakrishna Annapareddy
    Abstract:

    A new method is proposed to evaluate the Seismic Stability of a rigid retaining wall undergoing translation or rotational failure. In the present method, strain-dependent dynamic properties are used to assess the Seismic Stability of rigid retaining walls against sliding and overturning failure conditions. The effect of foundation soil properties on the Stability of retaining walls is also considered. From the parametric study, it is observed that the foundation soil properties have a significant effect on both sliding and rotational Stability of rigid retaining walls. This can be attributed to the use of strain-dependent dynamic properties and the consideration of foundation soil properties. The predictions of the proposed method are compared and verified against the results from other methods proposed in the past. The percentage increase in the results compared to the existing literature is a maximum of 10 and 28% for rigid (bedrock) and flexible (sand deposit) foundation, respectively.

Xiaoqin Lei - One of the best experts on this subject based on the ideXlab platform.

  • Seismic Stability analysis of gravity retaining wall supporting c φ soil with cracks
    Soils and Foundations, 2019
    Co-Authors: Shuxi Zhao, Qiwei Yan, Xiaoqin Lei
    Abstract:

    Abstract This article presents an analytical approach for the Seismic Stability analysis of gravity retaining wall with c–φ backfill soil. Cracks which are pre-existing (open before the collapse) and are form as part of slope collapse are considered. For a translational failure mechanism assumed, formulas are provided to calculate directly the yield acceleration and the inclination of failure surface. Factors such as cracks and cracks opening, wall back inclination, soil-wall friction, backfill slope are easily to be coupled into the formulations. Both the depth and most adverse location of the crack can be determined from the optimization procedure. Comparisons are made with existing methods and the influences of cracks opening are discussed. The influence of a crack presence on Seismic Stability of soil-wall system is distinct and pre-existing (opened) cracks have more adverse effect.

  • Seismic Stability analysis of gravity retaining wall supporting c–φ soil with cracks
    Soils and Foundations, 2019
    Co-Authors: Shuxi Zhao, Qiwei Yan, Xiaoqin Lei
    Abstract:

    Abstract This article presents an analytical approach for the Seismic Stability analysis of gravity retaining wall with c–φ backfill soil. Cracks which are pre-existing (open before the collapse) and are form as part of slope collapse are considered. For a translational failure mechanism assumed, formulas are provided to calculate directly the yield acceleration and the inclination of failure surface. Factors such as cracks and cracks opening, wall back inclination, soil-wall friction, backfill slope are easily to be coupled into the formulations. Both the depth and most adverse location of the crack can be determined from the optimization procedure. Comparisons are made with existing methods and the influences of cracks opening are discussed. The influence of a crack presence on Seismic Stability of soil-wall system is distinct and pre-existing (opened) cracks have more adverse effect.

Anindya Pain - One of the best experts on this subject based on the ideXlab platform.

  • A Strain Dependent Approach for Seismic Stability Assessment of Rigid Retaining Wall
    Geotechnical and Geological Engineering, 2020
    Co-Authors: Sanjay Nimbalkar, Anindya Pain, V. S. Ramakrishna Annapareddy
    Abstract:

    A new method is proposed to evaluate the Seismic Stability of a rigid retaining wall undergoing translation or rotational failure. In the present method, strain-dependent dynamic properties are used to assess the Seismic Stability of rigid retaining walls against sliding and overturning failure conditions. The effect of foundation soil properties on the Stability of retaining walls is also considered. From the parametric study, it is observed that the foundation soil properties have a significant effect on both sliding and rotational Stability of rigid retaining walls. This can be attributed to the use of strain-dependent dynamic properties and the consideration of foundation soil properties. The predictions of the proposed method are compared and verified against the results from other methods proposed in the past. The percentage increase in the results compared to the existing literature is a maximum of 10 and 28% for rigid (bedrock) and flexible (sand deposit) foundation, respectively.

Shuxi Zhao - One of the best experts on this subject based on the ideXlab platform.

  • Seismic Stability analysis of gravity retaining wall supporting c φ soil with cracks
    Soils and Foundations, 2019
    Co-Authors: Shuxi Zhao, Qiwei Yan, Xiaoqin Lei
    Abstract:

    Abstract This article presents an analytical approach for the Seismic Stability analysis of gravity retaining wall with c–φ backfill soil. Cracks which are pre-existing (open before the collapse) and are form as part of slope collapse are considered. For a translational failure mechanism assumed, formulas are provided to calculate directly the yield acceleration and the inclination of failure surface. Factors such as cracks and cracks opening, wall back inclination, soil-wall friction, backfill slope are easily to be coupled into the formulations. Both the depth and most adverse location of the crack can be determined from the optimization procedure. Comparisons are made with existing methods and the influences of cracks opening are discussed. The influence of a crack presence on Seismic Stability of soil-wall system is distinct and pre-existing (opened) cracks have more adverse effect.

  • Seismic Stability analysis of gravity retaining wall supporting c–φ soil with cracks
    Soils and Foundations, 2019
    Co-Authors: Shuxi Zhao, Qiwei Yan, Xiaoqin Lei
    Abstract:

    Abstract This article presents an analytical approach for the Seismic Stability analysis of gravity retaining wall with c–φ backfill soil. Cracks which are pre-existing (open before the collapse) and are form as part of slope collapse are considered. For a translational failure mechanism assumed, formulas are provided to calculate directly the yield acceleration and the inclination of failure surface. Factors such as cracks and cracks opening, wall back inclination, soil-wall friction, backfill slope are easily to be coupled into the formulations. Both the depth and most adverse location of the crack can be determined from the optimization procedure. Comparisons are made with existing methods and the influences of cracks opening are discussed. The influence of a crack presence on Seismic Stability of soil-wall system is distinct and pre-existing (opened) cracks have more adverse effect.