Numerical analysis of dense narrow backfills for increasing lateral passive resistance.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Query Builder

Query box

Help
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Numerical analysis of dense narrow backfills for increasing lateral passive resistance.

Filetype[PDF-3.91 MB]


  • English

  • Details:

    • Resource Type:
    • Geographical Coverage:
    • OCLC Number:
      693769216
    • Edition:
      Final.
    • NTL Classification:
      NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures
    • Abstract:
      Previously, full-scale lateral load tests conducted on pile caps with different aspect ratios showed that placement

      of a narrow, dense backfill zone against the cap could substantially increase the passive resistance. The objective

      of this study is to develop design equations to predict the increased passive resistance for these limited width

      backfills for both 2D and 3D conditions. For this purpose, the finite element program, PLAXIS 2D was used to

      investigate the 2D or plane strain passive resistance. To validate the procedure, numerical results were calibrated

      against analytical results obtained from PYCAP and ABUTMENT. The analytical models were additionally

      validated by comparison with measured ultimate passive resistances. The calibrated model was then used to

      simulate the passive behavior of limited width gravel backfills. Parametric studies were also executed to

      evaluate the influence of a range of selected design parameters, related to the pile cap geometry and backfill soil

      type, on the passive resistance of limited width backfills. Numerical results indicated that significant increases in

      passive resistance could be expected for long abutment walls where end effects are less pronounced and the

      geometry is closer to a plane strain condition. Based on results obtained from the parametric studies, a design

      method was developed for predicting the ultimate passive resistance of limited width backfills, for both plane

      strain and 3D geometries. Comparisons between measured and numerical results indicated that using the Brinch-

      Hansen 3D correction factor, R3D, as a multiplier to the plane strain resistances, will provide a conservative

      estimate of the actual 3D passive response of a pile cap with a limited width backfill.

    • Format:
    • Funding:
    • Main Document Checksum:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at rosap.ntl.bts.gov

    Version 3.23