Scholarly record

STUDY OF THE RESULTS OF STATIC CPTU TEST FOR CAPACITY CALCULATION OF THE PILE

Irena Baginska, Marek Wyjadlowski, Maciej Sacha

Abstract

Based on a real-life example, the report presents the methodology and the process of adapting in situ measurements from static CPTu probing for an application in a design process, using direct methods of driven pile capacity estimation. The report discusses two approaches. One of them is based on a real-life original CPTu measurement involving preliminary soil assessment while the other one is based on the initial averaging of the measurement values qc and fs. The paper provides methods of averaging cone resistances (????, ????????, ??????), which become the input data for the algorithm of calculating the capacities of the pile side and its base. The authors focus on two most common methods of estimating pile capacity directly from a CPT measurement: the Philipponnat and the Bustamante-Gianeselli method. The issue of the maximum pile side resistance ????,??,??(??????) is presented and illustrated graphically. The ranges of adopting averaging zones ???? for pile base capacity assessment are provided for both methods together with the resultant differences.

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DOI resolver: doi.org/10.5593/sgem2017/12/s02.105

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