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Civil engineering group project


The Effect of Cracking on the Dynamic Modulus of Reinforced Concrete Beams

Structural engineers continue to refine their understanding of material and structural behaviour, which has had consequences on the dynamic behaviour of modern structures in the following ways:

To create a good design taking into account these issues, requires better understanding of the dynamic modulus of a reinforced concrete slab.

Aims and objectivesconcrete_10.jpg

 

Design of beams, concrete and rigconcrete_7.jpg
Theoretical and computational predictions


Predictions regarding the development of cracks, displacement and frequencies have been achieved through utilising Excel, MATLAB and Oasys GSA.

It is more difficult to make predictions on the extent of cracking in a concrete beam. The more extensivly a beam cracks, can lead to a lower second moment of area. As the amount of cracking cannot be accurately predicted, the behaviour of the beam is difficult to anticipate with certainty. The project group uses these experiments to come to a conclusion.

Quantifying the extent of cracking is necessary to understand the changes in second moment of area. Together with experimental dynamic testing, the beam will be used to determine the effects of cracking on the dynamic modulus of a concrete beam.

concrete_6a.jpgconcrete_6b.jpgconcrete_6c.jpg

 

 

 

Illustrations above show Oasys GSA beam shape predictions 

(PDF Document) Full project details

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