Desenvolvimento, efeitos e mitigação de liquefacção induzida por sismos: um estudo exaustivo baseado em modelação física dinâmica na centrifugadora
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https://doi.org/10.14195/2184-8394_107_2Palabras clave:
Liquefacção induzida por sismos, areia saturada, modelação física na centrifugadoraResumen
A liquefacção de areias saturadas é uma ameaça séria para estruturas construídas sobre fundações superficiais em regiões sismicamente activas. A implementação do dimensionamento baseado no desempenho nestes casos é condicionada pelo fraco conhecimento sobre os mecanismos relacionados com o desenvolvi mento, magnitude dos efeitos e mitigação da liquefacção induzida por sismos, os quais foram estudados atra vés de um projecto de investigação conjugando técnicas experimentais e numéricas. Este artigo foca a com ponente experimental do trabalho baseada em modelação física na centrifugadora, descrevendo a forma como a técnica é aplicada no estudo de problemas de liquefacção e apresentando algumas das observações e conclu sões preliminares obtidas. Tanto as características mais importantes do comportamento do sistema solo-estru tura quando o solo sofre liquefacção, como as que determinam o desempenho da densificação enquanto me dida de mitigação dos efeitos da liquefacção são consideradas.
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