Title:
Strut-and-Tie Models for Headed Bar Development in C-C-T Nodes
Author(s):
Sung-Chul Chun and Sung-Gul Hong
Publication:
Structural Journal
Volume:
106
Issue:
2
Appears on pages(s):
123-131
Keywords:
anchorage; bar development; bond strength; failure mechanism; headed bar; strut-and-tie model.
DOI:
10.14359/56350
Date:
3/1/2009
Abstract:
This study presents strut-and-tie models (STMs) explaining the development of bond strength along bonded length together with anchorage by head bearing of a headed bar. The anchorage at a head requires construction of a biaxially compressed nodal zone and bond resistance needs to use the concept of a smeared node. This model consists of a strut with the nodal zone at the head for head bearing and a fan-shaped stress field for bond stresses along the development length. This modeling clarifies interaction between head bearing and bond resistances. The experimental results for a series of headed bars with relatively small head bearing areas are interpreted by this proposed model.