Study of bond stress-slip relationship and radial dilation in prestressed concrete
| Autor: | M.J. Casati, José Ma Benítez, Jaime C. Gálvez |
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| Rok vydání: | 2012 |
| Předmět: |
Dilatant
Engineering Test procedures business.industry Bond 0211 other engineering and technologies Computational Mechanics 020101 civil engineering 02 engineering and technology Structural engineering Numerical models Slip (materials science) Physics::Classical Physics Geotechnical Engineering and Engineering Geology 0201 civil engineering law.invention Prestressed concrete Mechanics of Materials law Indentation Precast concrete 021105 building & construction General Materials Science business |
| Zdroj: | International Journal for Numerical and Analytical Methods in Geomechanics. 37:2706-2726 |
| ISSN: | 0363-9061 |
| DOI: | 10.1002/nag.2158 |
| Popis: | This paper presents two test procedures for evaluating the bond stress–slip and the slip–radial dilation relationships when the prestressing force is transmitted by releasing the steel (wire or strand) in precast prestressed elements. The bond stress–slip relationship is obtained with short length specimens, to guarantee uniform bond stress, for three depths of the wire indentation (shallow, medium and deep). An analytical model for bond stress–slip relationship is proposed and compared with the experimental results. The model is also compared with the experimental results of other researchers. Since numerical models for studying bond-splitting problems in prestressed concrete require experimental data about dilatancy angle (radial dilation), a test procedure is proposed to evaluate these parameters. The obtained values of the radial dilation are compared with the prior estimated by numerical modelling and good agreement is reached |
| Databáze: | OpenAIRE |
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