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Navegando EECA - Artigos publicados em periódicos por Autor "Angelim, Renato Resende"
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Item Capacidade de carga de fundações e verificação de recalques a partir de parâmetros do ensaio panda 2 e de outros ensaios in situ(Ricardo Prado Abreu Reis, 2018-06) Tonhá, Antônio Carlos Ferreira; Angelim, Renato ResendeThis study aims to compare the load capacity of shallow and deep foundations, spread footing and piles, using dynamic penetration resistance values of PANDA 2 test in tropical compacted soil, replacing the parameters obtained by CPT and SPT that implement the traditional methods of capacity of design load. Furthermore, this research includes also the settlements analysis in each of the situations proposed. The comparison of the load capacity of footing and pile with predefined dimensions was made through theoretical and semi-empirical methods. The PANDA 2 results use were satisfactory, with little variability when compared to SPT and CPT use for foundations design in the studied soil. With regard to settlements, as expected, the settlement for pile was relatively lower than the settlements on footing. The main contribution of this paper was the practical application of Panda 2 results use, through methods of estimate foundations load capacity and settlements.Item Medição de energia no ensaio SPT em solo tropical do campo experimental da EECA/UFG - Goiânia(Ricardo Prado Abreu Reis, 2018-06) Jardim, Humberto Carlos de Oliveira; Machado, Romulo Rodrigues; Jorge, Pedro Augusto Machado; Angelim, Renato Resende; Guimarães, Renato CabralThe Standard Penetration Test (SPT), widely used in Brazil, although normalized, may present significant variations on the results caused by the different equipment and procedures used. The measurement of the kinetic energy arriving to the rod during the test is an alternative to improve the valor of the test, making possible to compare the results obtained by different equipment and teams. This study has the objective to compare different energy evaluations of the SPT on tropical soils in the experimental field of the Civil Engineering School from the Federal University of Goiás in Goiania, to disseminate this technique, build a database and demonstrate the advantages of its use. For the theoretical-experimental analysis, it was used accelerometers and strain gauges on an instrumented rod using a dynamic wave analyzer which allowed the simultaneous monitoring of each hit and posterior analysis of this data on software for this purpose. The main contribution of this research is to validate the importance of choosing the correct integration interval for the analysis of the data of the kinetic energy transferred to the anvil and that this energy is not affected by the length of the rod nor by the soil resistance under this research conditions. Also, it expects to contribute on a database of the energy measured SPT for local teams and equipment.