Insights Into Drop Mass Systems For Predicting Pile Compressive Resistance From Dynamic Load Test Energy Measurements: A Case Study Of The Tagus River Lezã­ria Bridge And Viaducts

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Insights Into Drop Mass Systems For Predicting Pile Compressive Resistance From Dynamic Load Test Energy Measurements: A Case Study Of The Tagus River Lezã­ria Bridge And Viaducts
Jaime Santos, Jeniffer Viegas
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Resumo:

The present era is defined by the advent of big data, where large volumes of data are generated and stored daily. However, the true challenge lies in transforming this data into meaningful and actionable information. To extract insights from these vast datasets, there is a growing dependence on data-driven methods, many of which build upon traditional statistical foundations. These techniques enable the creation of models that enhance our understanding of diverse subjects and facilitate informed decision-making. This study focuses on the establishment and exploration of a database derived from dynamic load tests on piles (DLT). In DLT on piles, impact hammers are employed, characterized by their potential energy or kinetic energy just before impact. Testing on high-capacity drilled deep foundations presents several challenges, including the need for sufficient energy to mobilize compressive static resistance of the pile. The investigation delves into understanding the correlation among various DLT test variables and uncovering potential relationships using statistical models, such as linear and non-linear regression. The findings from this exploration have unveiled crucial insights, such as the influence of diameter on pile compressive resistance and stiffness and also the existence of a non-linear relationship between resistance and the maximum energy transferred to the pile.

Referência: 

Volume 48, N. 4, Special Issue: 18th ECSMGE, Lisbon 2024 (Invited Editors: A.A.S. Correia, J. Mateus de Brito, C. Ferreira), October-December 2025
Tipo: Revista Soils and Rocks