Three-dimensional cohesive crack model prediction of the flexural capacity of concrete slabs on soil

Cristián Gaedicke, Jeffery Roesler, Francisco Evangelista

Research output: Contribution to journalArticlepeer-review

Abstract

A three-dimensional approach to discretely account for crack initiation, crack growth, and determination of the flexural load capacity of concrete slabs on an elastic foundation under mode I loading is proposed. The finite element model incorporated cohesive crack elements along a pre-defined crack path in the concrete slab. A bilinear softening model was used to describe the stress-crack opening relationship for plain concrete and was defined solely on measured strength and fracture properties. The proposed method predicted the slab's flexural load capacity as compared to the large-scale experimental concrete slab results for several geometries and notch configurations. The model also provided insight into stress concentration areas and crack propagation positions at different load levels.

Original languageEnglish (US)
Pages (from-to)1-12
Number of pages12
JournalEngineering Fracture Mechanics
Volume94
DOIs
StatePublished - Nov 2012

Keywords

  • 3-D cohesive elements
  • Concrete slab
  • Elastic foundation
  • Flexural capacity
  • Fracture mechanics

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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