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PONTS ET VIADUCS

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- 554 -<br />

rJes réactions exercées sur les appuis Aet B sont:<br />

1 Pd, P d' 1<br />

en A - pl + - + - == - PT'<br />

2 l l 2<br />

l 1 1 )<br />

, 1<br />

en B, de même à cause de la symétrie - pl + P.<br />

2<br />

1<br />

~I ,<br />

A<br />

X<br />

i<br />

1<br />

~ ; IiI C<br />

l<br />

Fig. 89.<br />

1.<br />

"<br />

1 ~<br />

1,<br />

". B<br />

, ;<br />

1

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