The use of dynamic load tests for execution control of driven precast piles in logistic warehouses

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Publication Title
The use of dynamic load tests for execution control of driven precast piles in logistic warehouses

Abstract
Execution control during and after driving precast concrete piles is a critical issue for work validation and acceptance. This is especially important due to the high compressive stresses usually expected to be resisted by precast piles, taking advantage of the high-resistant concrete used on its manufacture and given the effects of driving and lateral displacement of the soil on increasing geotechnical bearing capacity. Among others, refusal measure is one of the main aspects of the execution control of every driven piles, and the refusal criterion is defined using pile driving formulas, usually conservative. Dynamic load tests play a key role in the execution control process, testing a sample of piles, driven with the refusal criterion, to a maximum axial load defined with a given Safety Factor. The results of the Dynamic Load Tests are then used to check and set the refusal driving criterion or calibrate it if needed. In this paper is presented a description of the execution control process used by KELLER in major piling works for logistic warehouses, and a preliminary study comparing the allowable loads deducted from Dynamic Load Tests results and the allowable loads estimated through refusal measurement.
Authors
Joel Costa; J. M. Diaz; J. C. Sanchez

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

C - Risk analysis and safety evaluation

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