On souhaite renforcer un arc en intervenant à l’intrados (A) ou à l’extrados (B).
On peut appliquer des bandes à l’intrados, correctement ancrées, pour augmenter l’excentricité admissible de la résultante de compression dans l’épaisseur de l’arc et augmenter les charges conduisant à la formation des charnières plastiques qui provoquent le mécanisme de rupture.
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