Bearing strength calculation of end-bearing piles under recognition of cohesive friction on the pile surface release_pfyxxdw5trdctk7xmiez7dxjx4

by Vladimir Utkin

Published in Stroitel'stvo: Nauka i Obrazovanie by Moscow State University of Civil Engineering.

2019   p1-1

Abstract

Introduction. It is a drawback of the existing end-bearing pile design method for soil base bearing capacity that the latter is not taken into account in the assessment of the foundation soil action above the rock or a low-compression soil layer in all cases in accordance with the Building Code 24.13330.2011. However, taking into account the bearing capacity of this layer of the soil base in the load accommodation by the end-bearing pile (under recognition of the pile weight) could increase its calculated bearing capacity by the respective value of the soil base bearing capacity in combination with the soil support action under the pile's lower end. The objective of the research is improving the trustworthiness of the calculation result of the bearing strength of end-bearing piles in the soil base, identifying the pile's bearing strength reserve by taking in account the additional soil base bearing capacity due to the cohesive friction on the side surface of the pile. Materials and methods. The object of the research are piles of any applicable materials. The methods of calculation of the end-bearing piles are based on on cohesive friction values and their distribution along the pile length in a limit state calculation model in terms of the soil base bearing capacity. Results. The paper presents the equation of the ultimate compression load of the end-bearing pile in terms of the foundation base soil bearing capacity and the formula for the base soil bearing capacity reserve factor of the pile. The calculation of the pile bearing strength in terms of the material strength is referenced in the bibliography. Conclusions. A calculation method of end-bearing piles bearing strength was developed based both on the bearing capacity of soil base under the pile lower end and the additional soil bearing capacity along the flanks of the pile. The method could be applied also for calculations of the bearing strength of deep slot-type foundations. A quantitative assessment of the end-bearing pile on the design stage of a building with a pile foundation is given, prerequisite is made for further studies of the action of end-bearing piles and development of design codes for various piles in terms of material, type of support action, methods of immersion in the soil, etc.
In application/xml+jats format

Archived Files and Locations

application/pdf  758.0 kB
file_n2c2ioet5fdffhmkaldxt4i3oq
nso-journal.ru (web)
web.archive.org (webarchive)
Read Archived PDF
Preserved and Accessible
Type  article-journal
Stage   published
Date   2019-06-30
Container Metadata
Open Access Publication
In DOAJ
In ISSN ROAD
Not in Keepers Registry
ISSN-L:  2305-5502
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: c3c325a4-5b1e-46bb-beb1-469c15de8084
API URL: JSON