Reforco Fundacao
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MacGrid® Net - Micromalla
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MacGrid® Net – elemento responsável por estabilizar a base de umaestrutura de contenção em SP/Brasil e permitir sua construção. Alturamáxima do aterro, 15,00m
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( )0
2
0tan1tanln
2ββε ++=
L
Eqg
Pressão devido à contribuição média do efeito membrana
onde:E – Módulo elástico = 150 kN/mɛ – deformação no reforço = 15%βo – ângulo produzido pelo efeito da compactação = 49 graus
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Considerando a capacidade de carga do solo em função do Nspt:
Nspt = 2
qs = (Nspt x 100) / 5 = 40kPa
Obtendo o valor de qg através da equação anterior:
qg = 124kPa
Capacidade de carga do solo reforçado:
Qap = qs + qg = 164 kPa
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Durante o período de projeto se concluiu que se o solo de fundaçãorecebesse uma sobrecarga inicial superior a 100kPa seria possívelincrementar a capacidade de carga do solo de fundação por umprocesso de adensamento. Porém, esse solo não suportaria o efeito dacompactação e portanto foi proposta a solução de estabilização de soloscom a MacGrid Net.
Considerando que a tensão induzida oferecida pelos equipamentoscompactadores é aproximadamente de 100kPa, é possível dizer que oreforço geossintético foi suficiente para incrementar a capacidade decarga do solo de fundação e permitir a construção da obra.
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