Bond-slip constitutive relationship between bars and mortar for block masonry

ZHENG Yi^1,2, LI Li^2,3, LIU Ming¹, XU Jia-long², ZHANG Yan-nian¹

1.School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;2.Liaoning Building Materials Inspection Institute,Shenyang 110032,China;3.School of Materials Science and Engineering, Wuhan University of Technology,Wuhan 430070,China



Abstract:

Ten specimens were tested in this paper in order to study the bond behavior and the process of force transfer when bars adhered to mortar. The development of the bond stress between bars and mortar was calculated. Test results show that the maximum bond-stress is not influenced by the bar bond length and increases as the increased splitting strength of mortar for block. The local bond stress-slip curve was obtained. Then,based on the regressive analysis of test data,two bond shearing stress-slip constitutive models between bars and mortar were proposed. The models can be used in the numerical simulation or finite element analysis and provide references for the improvement of the corresponding design codes.

Key words:  reinforced masonry  mortar  bond-slip  constitutive model

DOI：10.11916/j.issn.1005-9113.2010.02.006

Clc Number:TU364

Fund: