HDPE geogrid-residual soil interaction under monotonic and cyclic pullout loading

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Fernanda B. Ferreira (Author) FEUP; Castorina Silva Vieira (Author) FEUP; Maria de Lurdes Lopes (Author) FEUP; Pedro G. Ferreira (Author) FEUP

Journal

Title: Geosynthetics International

Vol. 27

Pages: 79-96

ISSN: 1072-6349

Publisher: ICE Publishing Ltd.

Indexing

ISI Web of Knowledge - 18 Citations

Scopus - 21 Citations

Associated Projects

CDW_LongTerm - Valorização de Resíduos de Construção e Demolição em aterros reforçados com geossintéticos. Estudo do comportamento a longo prazo

Other information

Authenticus ID: P-00R-J9V

DOI: 10.1680/jgein.19.00057

Abstract (EN): The understanding of soil-geosynthetic interaction under cyclic loading conditions is essential for the safe design of geosynthetic-reinforced soil structures subjected to repeated loads, such as those induced by road and railway traffic and earthquakes. This paper describes a series of large-scale monotonic and multistage pullout tests carried out to investigate the behaviour of an HDPE uniaxial geogrid embedded in a locally available granite residual soil under monotonic and cyclic pullout loading. The effects of the pullout load level at the start of the cyclic stage, cyclic load frequency and amplitude, number of cycles and soil density on the load-strain-displacement response of the reinforcement are evaluated and discussed. Test results show that the cumulative displacements measured along the length of the geogrid during cyclic loading increased significantly with the precyclic pullout load level and the load amplitude. In contrast, the cumulative cyclic displacements were found to decrease with increasing frequency and soil density. In medium dense soil conditions, the geogrid post-cyclic pullout resistance decreased by up to 20%, with respect to the value obtained in the comparable monotonic test. However, for dense soil, the effect of cyclic loading on the peak pullout forces recorded during the tests was almost negligible.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 18