Julio César Leal Vaca (Author), Gustavo Gallegos Fonseca (Author), Eduardo Rojas González (Author)

Abstract

An equation to account for the shear strength of unsaturated soils is proposed in this paper. This equation is defined as the equivalent stress, and is an extension of Murray’s equation. This approach applies to the general case of bi-modal structured soils showing a macrostructure and microstructure. The theoretical development considers the existence of a dry fraction in addition to the saturated and unsaturated fractions of the soil. These different fractions are included in a porous model, which allows an evaluation of the parameters of the equivalent stress equation. Finally, the paper includes a comparison between theoretical and experimental results. The comparison shows that the proposed equation can be used to estimate the shear strength of unsaturated soils.

Keywords

unsaturated soil;shear strength;equivalent stress;water retention curve;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC: 624.13
COBISS: 284310784 Link will open in a new window
ISSN: 1854-0171
Parent publication: Acta geotechnica Slovenica
Views: 940
Downloads: 42
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: Slovenian
Secondary title: Suha frakcija nezasičenih tal
Secondary abstract: V članku je predlagana enačba za račun strižne trdnosti nezasičenih tleh. Ta enačba je definirana kot enakovredna napetost in je razširitev Murrayeve enačbe. Ta pristop se uporablja za splošni primer dvo-modalno strukturiranih tleh, ki kažejo makrostrukturo in mikrostrukturo. Teoretični razvoj obravnava obstoj suhe frakcije poleg zasičene in nezasičene frakcije tal. Te različne frakcije so vključene v porozni model, ki omogoča ovrednotenje parametrov enačbe primerjalne napetosti. Nadalje je izvedena primerjava med teoretičnimi in eksperimentalnimi rezultati. Slednje kaže, da se predlagana enačba lahko uporabi za oceno strižne trdnosti nezasičenih tal.
Secondary keywords: gradbeništvo;nezasičena zemljina;strižna trdnost;zadrževanje vode;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: str. 66-75
Volume: ǂVol. ǂ12
Issue: ǂ[št.] ǂ2
Chronology: 2015
ID: 10941540