Avaliação do método de trincheiras para redução de vibração na cravação de estacas pré-moldadas

• Autor(a) principal: Azocar, Gustavo Borges
• Data de Publicação: 2017
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Universitário da Ânima (RUNA)
• Texto Completo: https://repositorio.animaeducacao.com.br/handle/ANIMA/4281
• topic: Vibração; Bate estaca; Trincheira; Estaca pré-moldada

Deep foundations are widely used in large enterprises, chiefly precast piles due to its great cost-benefit ratio. The most aggravating disadvantage of this method is its interference with the surroundings of the construction, mainly, the vibration generated by the pile driving. This has the potential to reach nearby buildings or infrastructures causing them unpleasant pathological problems. Hence, the importance of knowing these vibrations, their ways of propagation in the soil and how to intervene to minimize them. In order to reduce the propagation of vibrations, the excavation of trenches is an adopted alternative, where this research will be evaluating its efficiency in reaching the objective. From a bibliographical research, coupled with data collection in a qualitative approach, soil vibration data were collected at each meter, with the execution of the trench and without its interference, during the execution of the pile driving in a construction in Tubarão, SC. With these data, amplitude characteristics were determined for each point, making possible to compare the collection without excavation and with excavation. Then, the behaviors of the data sets without and with excavation were mathematically modeled where the difference between the two was conspicuous, proving that the execution of the trench decreased the amplitude of the waves. Although it was not statistically possible to affirm a significant difference between the sets, it is possible to affirm that there is a tendency in reduction of the vibrations with its use.