This module of CEDRUS is designed for the analysis and dimensioning of stripped
bonded reinforcements. Compared to the standard CEDRUS slab analysis only a few
additional data is necessary. Due to this fact unexperienced users can also estimate
the efficiency using bonded flexural tension reinforcements right at the beginning
stage of the project.
Existing reinforcement
- Definition of the existing (non-pretensioned) reinforcement as basic reinforcement
Bonded reinforcement
- Predefined materials
- Number, thickness and width of the strips for each CEDRUS beam section
Actions
- Loading of the unstregthened slab
- Loading of the strengthened slab
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Analysis
- All verifications needed for the bonded reinforcement are included in the
beam section analysis
- Loading mechanism with two steps
- Consideration of the bond parameter κ according to SIA 166: Mean strains
(ε) are used for determining the plane of strain, for the equilibrium relations
the section at the crack is used
κ = ε/ε"
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Results
- Needed sections for the (non-pretensioned) reinforcement and bonded reinforcement
- Zone information along the beam section:
I: uncracked (State I)
II: cracked (State II)
- The ratio of the concrete compression zone to the static height allows a quick
estimation if the use of bonded reinforcement is reasonable at all
- Strains of (non-pretensioned) reinforcements (mean strains ε, strains at the
crack ε")
- Strains of the bonded reinforcement (meain strains ε, strains at the
crack ε")
- Axial forces of the strips
- Shear forces between the strips and the concrete cross section
- Output of the effective anchorage length whereby an exceeding does not
increase the resistance of the anchorage
- Comparission of the actual values with permitted values of the code
for verifying
- tension forces
- change of tension forces
- anchorage
- Tabular formated and graphical plot of all results
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