Download e-book for iPad: A Comprehensive Database of Tests on Axially Loaded Piles by Zhongxuan Yang, Richard Jardine, Wangbo Guo, Fiona Chow

By Zhongxuan Yang, Richard Jardine, Wangbo Guo, Fiona Chow

ISBN-10: 0128046554

ISBN-13: 9780128046555

ISBN-10: 0128047488

ISBN-13: 9780128047484

A entire Database of checks on Axially Loaded pushed Piles in Sands stories the serious have to advance higher load-test databases for piles pushed in sands. the major caliber parameters, inhabitants of present entries and reporting codecs are defined sooner than delivering initial effects got from comparisons among axial capacities calculated through a number of predictive methods and location measurements. This publication additionally exhibits that the "simplified" and "offshore" ICP and UWA editions proposed by means of a few practitioners are over-conservative and that their use may be discontinued. the hot pile skill and stiffness database bargains a large scope for comparing strength prediction biases when it comes to quite a lot of soil and pile parameters. Submission of additional top of the range checks for inclusion in usually up-to-date models is encouraged.

  • Presents a finished and up-to-date database for piles pushed in predominantly silica sands
  • Features reports of the layout methods for pushed piles in sand
  • Assesses the functionality of varied mainstreams layout methods utilized for piles pushed in sand
  • Provides accomplished info of case histories of pile load tests

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Extra resources for A Comprehensive Database of Tests on Axially Loaded Piles Driven in Sand

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The following empirical relationship proposed by Jamiolkowski et al. 2 Incremental Filling Ratio and Final Filling Ratio Both incremental filling ratio (IFR) and final filling ratio (FFR) pile coring parameters are used in the full UWA-05 procedures for open-ended piles. 3) where ΔLp is the increment of soil plug length, and Δz is the increment of the pile penetration. Ideally, IFR should be recorded during driving. 4) where Di has the unit of meter (m). FFR is the average value of IFR recorded over the last 3D of pile penetration.

3 Interface Shearing Angle δf The constant volume (ultimate) interface shearing angle δf used in ICP-05 and UWA-05 or their simplified versions is a key parameter that can vary with sand grain size, shape, and mineral type as well as the hardness and roughness of the pile surface. Site-specific ring shear tests provide the most reliable data. However, Jardine and Chow (1996) originally recommended that if such tests are unavailable, trends for δf with grain d50 could be used to provide estimates, and reported curves from constant normal stress direct shear tests on a range of clean standard sands shearing against steel interfaces prepared with initial Ra values between 6 and 10 μm, after Jardine et al.

1992). 1. This recommendation was revised by Jardine et al. 1 based on ring shear interface tests and also direct shear tests on offshore sands conducted for Shell (UK). Noting that the pile driving in dense sand abrades the surface of steel piles and greatly reduce their maximum roughness; CUR (2001) proposed to adopt a constant δf = 29°, irrespective of grain size. This recommendation is incorporated into the Fugro-05 procedures and provides a default for the UWA method. More recently, Ho et al.

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A Comprehensive Database of Tests on Axially Loaded Piles Driven in Sand by Zhongxuan Yang, Richard Jardine, Wangbo Guo, Fiona Chow

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