ANALYSIS OF PERMANENT DEFORMATION IN SUBGRADE MATERIAL USING A HEAVY VEHICLE SIMULATOR

Artigos científicos apresentados no exterior
Regras do fórum
Apenas artigos científicos apresentados no exterior
Manuela
Mensagens: 131
Registrado em: 03 Abr 2015, 18:37
Idade: 24
Status: Offline

ANALYSIS OF PERMANENT DEFORMATION IN SUBGRADE MATERIAL USING A HEAVY VEHICLE SIMULATOR

Mensagem por Manuela » 05 Set 2016, 11:38

Autores: Niclas Odermatt, Vincent Janoo, and Rolf Magnusson.

ABSTRACT:
Accelerated load tests of test sections constructed from two subgrade soils at two moisture contents were
conducted at the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL), using a Dynatest/CSIR
Heavy Vehicle Simulator. The test section consisted of a 76-mm (3-in.) asphalt concrete layer, 229 mm (9-in.)
crushed gravel base, and 3-m (10-ft) test subgrade. Preliminary results from the first full-scale accelerated load test
section, with a silty gravel subgrade soil constructed near optimum moisture content and density, are reported in
this paper. Measurements of the stresses and strains in the base and subgrade layers were used in the preliminary
development of a model for predicting rut depth. Strains were measured using the ε-mu coil system. Dynatest soil
pressure cells were used to measure the stresses, and a laser profilometer was used to measure the rut depth. For
this study, failure was set at 12.5-mm (0.5-in.) surface rut depth.
A preliminary subgrade rutting model was developed from the data as a function of the vertical elastic and
plastic strains respectively. This work has been carried out partly at CRREL, Hanover, N.H., USA, and partly at the
Division of Highway Engineering, Royal Institute of Technology (KTH), Stockholm, Sweden.
Você não está autorizado a ver ou baixar esse anexo.

Responder