Poutre rectangulaire la flexion simpleDimensionnement des
armatures lELU Cas o la contrainte de compression du bton est
limite lELSClasses dexposition XD, XF et XS.ok
caracteristiques des materiaux aciers -btontype du
btonC25/C30type
d'aciers500BEs200000Fyd434.78fcd16.67fck25Fcu16.7dimensions et
caracteristiques de la sectionbw0.18c0.03h0.6d'
M Aloueche: distance du centre de gravit des aciers comprims la
fibrede bton la plus comprime,0.05d0.54M
M Aloueche: M Aloueche:moment
ultime0.25ClasseC12/C15C16/C20C20/C25C25/C30C30/C37C35/C45C40/C50C45/C55C50/C60C55/C67C60/C75C70/C85C80/C95C90/C105Mser0.1791.400.8fck1216202530354045505560708090K1.00fcd810.666666666713.333333333316.66666666672023.333333333326.66666666673033.333333333336.66666666674046.666666666753.333333333360calcul
des moments
reduits1fctm1.61.92.22.62.93.23.53.84.14.24.44.64.85cu0.2858aciers
comprims
necessairefcm2024283338434853586368788898lu0.22340.22338614Ecm2700029000300003100033000340003500036000370003800039000410004200044000u0.320Ec2835030450315003255034650357003675037800388503990040950430504410046200ab0.0561fctk
0,051.11.31.51.822.22.52.72.933.13.23.43.5sl0.0074 PIVOT Bfctk
0,9522.52.93.33.84.24.64.95.35.55.766.36.6yd0.00217fctd0.750.891.031.221.361.51.651.781.9222.12.22.32.4sl438.60Palierc2
()Zc0.447cu2 ()0.00310.00290.00270.00260.0026As111.20cmc3 ()cas ou
les aciers comprims sont necessairescu3
()Mlu0.195'0.0926s2,e271.53pivot
A0.045500A0.10190.0225sl,e899.9329608939pivot
Bc500B0.05610.045As24.10cmsl0.00742865440.0035500C0.03870.0675
