Anchorage zone stresses of beams subjected to shear forces

Yook Kong Yong, Christopher B.K. Gadegbeku, Edward G. Nawy

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Transverse shear force effects on the stress and strain distributions of post-tensioned, rectangular, concrete anchorage blocks were studied, for both concentrically and eccentrically prestressed anchorage zones. From the threedimensional, isoparametric finite element model used, it was found that the peak lateral bursting stress in the beam width direction is always higher and nearer to the loaded face of the concrete than the peak transverse bursting stress in the direction of the beam height. Experimental verification involved the use of three-dimensional, embeddable, strain gage tripods, fabricated to measure the interior concrete strains in the anchorage blocks of fifteen beams subjected to transverse shear loadings up to failure. The measured strains were compared with the analytical strain curves and strain contours given by the three-dimensional finite element model, and found favorable. It was also found that the transverse shear load reduces the peak transverse bursting strain, but has little effect on the peak lateral bursting strain. The test ultimate transverse loads compared well with the respective theoretical loads, with a mean value of 1.10.

Original languageEnglish (US)
Pages (from-to)1789-1805
Number of pages17
JournalJournal of Structural Engineering (United States)
Issue number8
StatePublished - Aug 1987

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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