Time dependent behaviour of geosynthetic reinforced soil walls

• Type: Article in International Conference Proceedings Book
• Date: 1994

Authors

Maria de Lurdes Lopes (Author) FEUP; António Silva Cardoso (Author) FEUP

Conference proceedings International

Title: XIII ICSMFE

Pages: 1265-1268

13th International Conference on Soil Mechanics and Foundation Engineering

New Delhi, 5 a 10 de Janeiro de 1994

Other information

Resumo (PT): The paper describes a viscoelastic model to simulate the creep behaviour of geosynthetics, which is based on a chain of Kelvin units interconnected in series. The model is efficient and economic because the viscoelastic evolution is transformed into a sequence of n pseudo-elastic calculations, which are easy to perform since each step depends only on the preceding one. The implementation of this model in a finite element code is also discussed. Using the described viscoelastic model a study of long term behaviour of geosynthetics (in geogrid reinforced wall) is carried out. This study leads to the conclusion that changes in inclusion strains during time are composed by two parts, one due to material creep and another, elastic, due to the change in state of stress, and also that the behaviour of walls reinforced with those materials changes more significantly during the first year of service.

Abstract (EN): The paper describes a viscoelastic model to simulate the creep behaviour of geosynthetics, which is based on a chain of Kelvin units interconnected in series. The model is efficient and economic because the viscoelastic evolution is transformed into a sequence of n pseudo-elastic calculations, which are easy to perform since each step depends only on the preceding one. The implementation of this model in a finite element code is also discussed. Using the described viscoelastic model a study of long term behaviour of geosynthetics (in geogrid reinforced wall) is carried out. This study leads to the conclusion that changes in inclusion strains during time are composed by two parts, one due to material creep and another, elastic, due to the change in state of stress, and also that the behaviour of walls reinforced with those materials changes more significantly during the first year of service.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 4