Analytical approach of anchor rod stiffness and steel base plate calculation under tension

Konstantinos Daniel Tsavdaridis*, Mohamed A. Shaheen, Charalampos Baniotopoulos, Emad Salem

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


The analysis of column base plate connections under biaxial moment or when large numbers of anchor rods are utilised is complicated. Such complex connections are regularly found in engineering practice, in spite of proposed, up-to-date finite element modelling techniques and analytical formulations being unsuitable. The lack of suitability arises from their development for non-practical column base plate idealised configurations. In the present paper, the results of a finite element study of single-headed anchors under tension are discussed, leading to the derivation of a simple equation that describes the stiffness of the headed anchor rod embedded in concrete. Furthermore, this paper suggests a simple and suitable approach to analyse base plate connections independent of loading scenarios, the number of anchor rods and their arrangement, taking into account the actual rigidity of the connection. In this study, a three-dimensional, nonlinear finite element model is developed through the use of the general-purpose finite element software package ABAQUS. The respective numerical results were verified against experimental ones.

Original languageEnglish
Pages (from-to)207-218
Number of pages12
Early online date11 Nov 2015
Publication statusPublished - 1 Feb 2016


  • Anchor rod
  • Base plate
  • Holding down bolt
  • Monotonic tension load
  • Parametric study
  • Rod stiffness

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Safety, Risk, Reliability and Quality


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