RESTRAINED STRAINS AND SELF-STRESSES OF THE SELF-STRESSED CONCRETE MEMBERS IN THE UNIAXIAL RESTRAINT CONDITIONS
Abstract
Approaches and basic equations of the modified strains development model for the self-stressing concrete restrained expansion strains assessment for the different restraint conditions are presented. Proposed model is realized by the iterative procedure that considers expansion on the elementary time intervals. Modified strains development model was verified based on the results of the experimental studies of the self-stressed concrete members reinforced with steel or FRP bars in the different restraint conditions. Comparison of the predicted and calculated values of the restrained expansion strains has shown a good agreement. Effectivness of the FRP bars utilizing in combination with self-stressing concrete was confirmed. Obtained during concrete expansion in the restrained conditions initial volumetrical stress-strain state had a fruitful influence on the member resistance under the applied load.
About the Authors
V. .. Semianiuk
Brest State Technical University
Russian Federation
Russian Federation
V. .. Tur
Brest State Technical University
Russian Federation
Russian Federation
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Review
For citations:
Semianiuk V..., Tur V... RESTRAINED STRAINS AND SELF-STRESSES OF THE SELF-STRESSED CONCRETE MEMBERS IN THE UNIAXIAL RESTRAINT CONDITIONS. Building and Reconstruction. 2017;(2):32-56. (In Russ.)
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