Active and passive arching stresses outside a deep trapdoor

Costa, Yuri Daniel Jatobá; Zornberg, Jorge G.

Active and passive arching stresses outside a deep trapdoor

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dc.contributor.author	Costa, Yuri Daniel Jatobá
dc.contributor.author	Zornberg, Jorge G.
dc.date.accessioned	2020-11-09T19:55:48Z
dc.date.available	2020-11-09T19:55:48Z
dc.date.issued	2020-04-25
dc.description.resumo	The classic trapdoor configuration has been useful to examine the changes in stresses expected on buried structures. However, the primary focus of previous studies has been on investigating the loads on the surface of the trapdoor, while stresses outside the trapdoor boundaries have generally been overlooked. This paper presents and discusses results of three-dimensional laboratory model tests conducted to investigate changes in the vertical soil pressure measured at various locations within a granular soil mass surrounding a deep rectangular trapdoor acting in both active and passive modes. The study aimed at investigating stress changes within the portion of the soil mass beyond the boundaries of the trapdoor. Redistributions of soil pressure were found to occur in a large zone of the soil outside the trapdoor under both active and passive conditions. Results indicate that active conditions induced the development of an unloading region in the soil, which includes the collapsing mass above the trapdoor and a portion of the soil surrounding the trapdoor. A stable load-transfer region could be identified in farther portions of the backfill. In passive conditions, the development of a load-transfer region above the trapdoor and an unloading region extending to farther zones in the backfill was also identified. The soil relative density, soil confinement and trapdoor shape were found to affect soil pressure distributions outside the trapdoor limits	pt_BR
dc.identifier.citation	COSTA, YURI D.J.; ZORNBERG, J. G. . Active and passive arching stresses outside a deep trapdoor. Acta Geotechnica, p. xx, 2020. Disponível em: https://link.springer.com/article/10.1007/s11440-020-00969-x. Acesso em: 28 out. 2020. https://doi.org/10.1007/s11440-020-00969-x	pt_BR
dc.identifier.doi	10.1007/s11440-020-00969-x
dc.identifier.issn	1861-1133
dc.identifier.issn	1861-1125
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30548
dc.language	en	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Sand	pt_BR
dc.subject	Soil arching	pt_BR
dc.subject	Soil stress	pt_BR
dc.subject	Trapdoor tests	pt_BR
dc.subject	Underground structure	pt_BR
dc.title	Active and passive arching stresses outside a deep trapdoor	pt_BR
dc.type	article	pt_BR