Numerical analysis of group effect in bonded anchors with different bond strengths

Title: Numerical analysis of group effect in bonded anchors with different bond strengths
Author(s): Y.-J. Li, R. Eligehausen
Paper category : conference
Book title: International Symposium on Connections between Steel and Concrete
Editor(s): R. Eligehausen
Print-ISBN: 2-912143-25-X
e-ISBN: 2351580346
Publisher: RILEM Publications SARL
Publication year: 2001
Pages: 699 - 707
Total Pages: 9
Nb references: 12
Language: English

Abstract: In recent years the failure behavior of group anchors has been investigated and the group effect for quadruple fastenings with bonded anchors has been clarified. However the performed work is available only for an average bond strength within 8 MPa to 12 MPa.
No doubt, with the variation of the bond strength the group effect for bonded anchors should be influenced. In this paper the influence of the bond strength on the failure mode and the group effect is investigated. The investigation is carried out by performing a series of numerical analysis of single and quadruple fastenings with bonded anchors. In the calculation the concrete and the bond material are simulated by the improved microplane model, which is implemented in the 3D nonlinear finite element program MASA. Investigated are groups with bonded anchors (d =16 mm, hef = 96 mm) with a spacing s = 48 mm to s = 288 mm. Varied is the average bond strength (6.2, 11.1, and 22.5 MPa). From the results of the numerical study the influence of bond strength on the failure modes of groups with bonded anchors is revealed and the group effect as a function of the bond strength is clarified.

Online publication: 2009-12-31
Publication type : full_text
Public price (Euros): 0.00