Analysis of the Junction Efficiency of the Heksagonal Geogrid Used for Soil Reinforcement

In order to achieve the designed bearing capacity and durability of geosynthetic reinforced soil (GRS), it is necessary to compact the soil properly and to choose a geosynthetic with appropriate parameters. It is becoming more and more important to correctly determine the mechanical parameters of geosynthetics in laboratory tests. The traditional junction efficiency of the hexagonal geogrid is insufficiently adequate to the reality. According to this approach, the measure of the efficiency is limited to the ratio of the loads destroying the junction and the rib, and does not take into account the differences in deformations in the junction area and in the rib for different load values.This article presents the results of the first laboratory work carried out to evaluate the junction efficiency of hexagonal geogrid under static load by analyzing deformations of geogrid junctions and ribs. An innovative way to determine the efficiency is given by the newly defined strain junction efficiency coefficient based on the true principal strains. In the laboratory tests the digital image correlation (DIC) method was used. This method allows for the determination of displacements and strains of geogrid specimens in any direction and at any point. The results of the conducted research and analyses indicate that the method of evaluating the junction efficiency proposed in this article is more appropriate to the real performance of the junctions and ribs of the hexagonal geogrid under the different levels of tensile load.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References; Tables;
  • Pagination: 7p

Subject/Index Terms

Filing Info

  • Accession Number: 01657895
  • Record Type: Publication
  • Report/Paper Numbers: 18-04523
  • Files: TRIS, TRB, ATRI
  • Created Date: Jan 8 2018 11:06AM