Banca de DEFESA: JUCIELA CRISTINA DOS SANTOS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JUCIELA CRISTINA DOS SANTOS
DATE: 09/11/2022
TIME: 09:00
LOCAL: Pos Graduação Engenharia Civil
TITLE:

Mapping and Geotechnical Characterization of the Barreiras Formation in the Municipality of Maceió, Alagoas

KEY WORDS:

Geotechnical Characterization, SPT Database, Geostatistical Analysis.

PAGES: 253
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

This work presents a study on the geotechnical behavior of sediments from the Barreiras Formation in the city of Maceió - Alagoas, from a geomorphological, geological and geotechnical mapping, based on SPT tests and laboratory tests. 1,592 SPT records were spatialized, identifying typical profiles of and interpolation through the ordinary kriging method, in order to understand the resistance to penetration of soils in the studied region. With the support of the defined geomorphological compartments, the morphology of the Coastal Tablelands was associated with the Barreiras Formation Geological Unit, improving the cartographic scale of representation of this unit, at a scale of 1:10,000. A geotechnical detail study was carried out at four locations in the city: UFAL, HCOR, Grota da Moenda and Encosta do Mutange, belonging to the geological domain studied. The surveys showed a predominance of predominantly clayey profiles (between 65% - 85%) of the analyzed PTS, with characteristics that point to the occurrence of the Distal Fan/Alluvial Plain facie. Through geostatistical analysis, an increase in Nspt resistance and a seasonality effect resulting from the rainy season were observed. The generated maps complemented the geotechnical investigation carried out, which involved the execution of soundings, collection of undisturbed samples at the top, middle and bottom of the slope, in addition to laboratory tests such as physical characterization, erodibility, permeability (Tri-flex), suction study , double edometric assay, collapsivity studies, direct shear and triaxial ICD. The studied soils presented medium plasticity, classified as silts and clays of low compressibility (CL and ML). The parameters obtained for compressibility, resistance and those related to suction, are close to each other, presenting themselves coherent when compared to the existing literature, with the slopes showing less cohesion, highlighting the base of the slope of Moenda, being directly related with the granulometric composition. The geotechnical parameters obtained together with the probabilistic maps are of great importance in the knowledge of the behavior of the soils in the investigated place, allowing initial parameters for foundation projects, slope stability calculation, urban planning, among other engineering projects.

COMMITTEE MEMBERS:
Externa à Instituição - BERNADETE RAGONI DANZIGER - UERJ
Presidente - 2749584 - IGOR FERNANDES GOMES
Externa à Instituição - JULIANE ANDRÉIA FIGUEIREDO MARQUES - UFAL
Externo ao Programa - 1549099 - ROBSON RIBEIRO LIMA - nullExterno à Instituição - RODOLFO MOREDA MENDES