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Figure 9. Barrel vault with horizontal directrix.

Figure 7. Portal arch with extrados reinforcement: pile displacement u vs. load F-numerical/experimental comparison.

top displacement u (mm) versus the varying load F (N) for the arch reinforced with an extrados FRP reinforcement.

Again a very good agreement can be observed between the numerical and experimental data. The calculus code is demonstrated to be able to capture the behaviour of the portal arch ; Figure 8 depicts the collapse mechanism of the structure as it appears directly from the calculus code, clearly due to the formation of four hinges: one at the top of the left pile on the intrados, one at the keystone on the extrados, one under the load cell on the intrados of the right pile, one at the bottom of the right pile on the extrados. Both numerical and experimental data agree in assessing at approximately ten times the original value the increment of the loading capacity of the structure due to the extrados FRP reinforcement.

Figure 9. Barrel vault with horizontal directrix.

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Renewable Energy Eco Friendly

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