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Estatística
Título: STRUCTURE-SOIL INTERACTION BY FRAME STRUCTURES UNDER DYNAMIC LOADS DUE TO RECIPROCATING COMPRESSORS
Autor: EDUARDO ARREGUY VIANA
Colaborador(es): DEANE DE MESQUITA ROEHL - Orientador
Catalogação: 02/AGO/2013 Língua(s): PORTUGUESE - BRAZIL
Tipo: TEXT Subtipo: THESIS
Notas: [pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio.
[en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio.
Referência(s): [pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=21832&idi=1
[en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=21832&idi=2
DOI: https://doi.org/10.17771/PUCRio.acad.21832
Resumo:
Gas compressors are key components of industrial plants in oil refining, mainly acting as mechanical energy suppliers to chemical processes. Among the types of compressors, the reciprocating ones is highlighted. Due to mandatory demands of chemical process and industrial arrangement, it is common to install such equipment in framed structures. This condition and the typical movement of mechanical parts of the compressors generate dynamic loads which frequently causes unacceptable vibrations. The aim of the present work is to evaluate the dynamic behavior of a system consisting of a framed structure, a reciprocating compressor, foundation in piles and the soil itself. For this purpose, parametric study is developed from simplified spring-mass models, a finite element model and field measurements. The parametric study is aimed at establish ranges of local soil parameters within which the dynamic behavior of a system can be understood and measured. The parameters so-called spring stiffness (km) and the constant coefficient of horizontal reaction (nh) of natural soil which typically occurs in the area covered by the REPAR refinery, located in Araucaria, Paraná, are then evaluated. This type of natural soils belongs to the geological formation called Guabirotuba. The evaluation of the dynamic behavior of the system through the developed models is benchmarked by field measurements of effective velocity of vibration in the actual structure, obtained by instrumentation. The soil parameters are obtained by back analysis of tests results by using two models widely used in design offices: model proposed by Miche (1932) and model proposed by Hetenyi (1946). The first one takes in account the variation of the soil parameters with depth, and the second one considers soil parameters constant with depth. The aim is also to evaluate the influence of the soil parameters obtained by static and cyclic horizontal loading tests, the latter being proposed to simulate the dynamic effect on the soil. Finally, it is done comparisons of the results provided by simplified models and the finite element model in terms of natural frequencies of vibration.
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