National Transport Library Research Database

Moräners och fasta friktionsjordars schaktbarhet (Excavation in moraine and dense non cohesive soil)

  • Hintze, Staffan
  • Kungliga tekniska högskolan, Universitet eller högskola, 202100-3054
Sponsors, duration, budget: Vägverket ; 2008-01-01 -- 2013-12-31 ; 2980000 kronorRegistration number:
  • Vägverket AL90 B 2008:8320, 2009/7937, AL90 2008:72234
  • Trafikverket 2010/2191
Subject(s): Abstract: Projektet syftar till att beskriva vilka geotekniska egenskaper i moräner och i grova friktionsjordar som påverkar schaktbarheten och presentera ett nytt system för klassificering av schaktbarhet.Abstract: Excavation and moving of soil are common civil work tasks connected to construction of buildings, roads and railways. In construction projects large amounts of soil have to be handled with different machines, tools and working methods. Soils are more or less difficult to excavate depending on their properties. The ability of excavating the soil (the excavatability) in combination of the type of work performed affects the choice of machines and tools being used. It also affects the time it takes to perform the work. The handling of soil volumes is a large part of the project cost. The cost depends on machines and tools being used, the amount of soil being excavated and the ability of excavating the soil. The main objectives of this study are: to identify parameters affecting the excavatability in soil through a literature review, to study and describe the excavation process in soil, to evaluate parameters affecting the horizontal resistive force on a wide blade with the finite element method, to compare and discuss the magnitude of the horizontal resistive force obtained in the finite element study with calculations with an analytical model, to propose a new classification system.
Item type: