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- Title
Strut-and-Tie Model for Punching Failure of Column Footings and Pile Caps.
- Authors
Broms, Carl Erik
- Abstract
A design method for spread footings and pile caps is presented. The model is in principle based on the strut-and-tie concept, but with the strut dimensions defined by compatibility conditions and therefore not possible to manipulate by the designer. Due respect is paid to the size effect--that is, the decreasing strength with increasing member size--which seems to be disregarded by common strut-and-tie methods. Comparison with test results of column footings and four-pile caps in the literature demonstrates that brittle punching failure as well as yielding and brittle cracking failure can be predicted with very good accuracy.
- Subjects
CONCRETE footings; BUILDING foundations; BRITTLE fractures; CRACKING of concrete; FRACTURE mechanics
- Publication
ACI Structural Journal, 2018, Vol 115, Issue 3, p689
- ISSN
0889-3241
- Publication type
Article
- DOI
10.14359/51702042