Retroanálise com o uso de rotina em Python aplicada a ensaios pressiométricos

Abstract

The search for reliable parameters for a correct analysis is one of the great challenges found in the project area for geotechnical engineering works. Factors such as the high cost of more accurate testing, the delay in obtaining results, and errors during investigations result in technical complications for design professionals. The aim of this dissertation is to present a method of obtaining parameters for pressuremeter tests from numerical analysis aided by a specific Python Script. At the end will be a back analysis of a case where design parameters were obtained through PMT (Pressuremeter Menard Test), and compared with parameters resulting from the Python Script, values derived from geotechnical instrumentation and design previously performed. This methodology aims to implement a fast and effective choice for the use of data from pressuremeter tests. Through the automated reproduction of numerous numerical simulations of said test with different parameters, it will be possible to choose the values that lead to the curve most faithful to that obtained in the field test. The routine, initially developed by Eng. Francisco Santos Marques, was improved and underwent a series of modifications to properly work the case study work and with the updated version of Plaxis 2019 software. The results were used in a 3D model of the project of the Varnhagen Square rain damming reservoir, where it was possible to analyze the reliability of the proposal through the deformations found in the deformations measured at the local diaphragm walls.