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Advisor(s)
Abstract(s)
Atualmente, qualquer que seja o projeto associado a uma obra de engenharia, requer o devido estudo do terreno que irá estar na base dessa mesma obra. Este estudo é conseguido através da prospeção geotécnica, que se divide em dois grandes grupos: prospeção geofísica e prospeção mecânica. Dentro de cada um destes grupos, são várias as metodologias associadas a ensaios de campo e/ou laboratório possíveis de se considerar a fim de se obterem os resultados pretendidos. No caso desta dissertação, foi abordado, de forma pormenorizada, o ensaio do penetrómetro dinâmico médio (PDM) incluído no grupo da prospeção mecânica. O PDM tem como principal objetivo a obtenção do índice de resistência à penetração que determinado solo oferece, podendo este ser relacionado com outro tipo de grandezas para que se conheça o comportamento geomecânico do terreno. Após descrita em pormenor toda a metodologia relacionada com este ensaio, seguiu-se a demarcação de ensaios a realizar em toda a extensão do campus do ISEP, com o objetivo final de fornecer um contributo importante à futura definição da carta geotécnica de pormenor daquele campus. Numa fase posterior e a fim de se obter a evolução da resistência à compressão em profundidade, foram realizados vários perfis que incluem o máximo de furos alinhados entre si. Discutiu-se os seus resultados e apresentou-se uma sugestão generalizada para a dita caracterização geotécnica do campus do ISEP. Foi ainda proposta a realização de modelação geoestatística, com o intuito de se perceber como cada um dos zonamentos considerados, se comportam a partir de uma superfície moldada. Posto isto, e para finalizar, são tidas em consideração algumas das principais conclusões sobre a validade do ensaio para este tipo de trabalhos.
Nowadays, any engineering related project requires the previous study of the terrain where it will be located. The study is made by the geotechnical exploration, which is divided in two major groups: geophysical exploration and mechanical exploration . Within those groups there are many methodologies related to field and/or laborotories probes that are possible to consider in order to acquire the best results. In this dissertation, it was made a pormenorized aproach to the dynamic probing medium (DPM) which is included in the mechanical prospection group. The main goal of DPM is the obtainment of the penetration resistance index that a certain soil offers. This can be related with another orders of magnitude in order to study the geomechanical reaction of the terrain. After all the related methodology was described, it was made the demarcation of the tests to be performed within ISEP campus, with the final target of contribute to the future definition of the pormenorized geotechnical letter of this campus. In an advanced phase, in order to obtain the compressive strength in depth, there were made various profiles that include the maximum aligned drills within them. Their results were discussed and it was presented a generalized suggestion to the geotechnical caracterization of ISEP campus. It was also proposed to carry out three-dimensional geostatistical modeling in order to understand how each of the zoning, behave as a molded surface. To sum up, some of the main conclusions related to the probing validity to this kind of works, are put to consideration.
Nowadays, any engineering related project requires the previous study of the terrain where it will be located. The study is made by the geotechnical exploration, which is divided in two major groups: geophysical exploration and mechanical exploration . Within those groups there are many methodologies related to field and/or laborotories probes that are possible to consider in order to acquire the best results. In this dissertation, it was made a pormenorized aproach to the dynamic probing medium (DPM) which is included in the mechanical prospection group. The main goal of DPM is the obtainment of the penetration resistance index that a certain soil offers. This can be related with another orders of magnitude in order to study the geomechanical reaction of the terrain. After all the related methodology was described, it was made the demarcation of the tests to be performed within ISEP campus, with the final target of contribute to the future definition of the pormenorized geotechnical letter of this campus. In an advanced phase, in order to obtain the compressive strength in depth, there were made various profiles that include the maximum aligned drills within them. Their results were discussed and it was presented a generalized suggestion to the geotechnical caracterization of ISEP campus. It was also proposed to carry out three-dimensional geostatistical modeling in order to understand how each of the zoning, behave as a molded surface. To sum up, some of the main conclusions related to the probing validity to this kind of works, are put to consideration.
Description
Keywords
Caracterização geotécnica Prospeção geotécnica Penetrómetro dinâmico médio Geotechnical characterization In Situ geotechnical investigations Dynamic penetrometer medium