Analysis of Geocell Load Transfer Mechanism Using a New Radial Load Test

The use of geocells for soil stabilization, especially for stabilization of paved and unpaved roads, has significantly increased during the last years. Nevertheless, the design of geocell stabilized soil is mainly based on experience or very simplistic design methods to estimate the ultimate bearing capacity (ultimate limit state analysis). The existing ultimate limit state designs methods are based on principles derived from soil mechanics and usually have not been verified for geocell stabilized soil. Design methods for the estimation of settlements or rut depths (serviceability analysis) are not available. This is mainly due to limited knowledge of the load carrying mechanism of geocells. This paper presents a new test method called the radial load test (RLT) to evaluate the load carrying mechanism within a geocell system in detail. The influence of different factors such as geocell stiffness, number of interconnected geocells and geocell height on the load carrying mechanism were evaluated using the RLT. Results show that the bearing capacity of geocells significantly increases with increasing material stiffness, geocell height and increasing number of interconnected cells. Based on the test results, an analytical model for the load carrying mechanism within a geocell system was developed. Comparison of calculated values and measured test results are in good agreement. The test results, as well as the analytical model, are described in the paper.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 345-357
  • Monograph Title: Sound Geotechnical Research to Practice: Honoring Robert D. Holtz II

Subject/Index Terms

Filing Info

  • Accession Number: 01902948
  • Record Type: Publication
  • ISBN: 9780784412770
  • Files: TRIS, ASCE
  • Created Date: Dec 21 2023 4:35PM