FORMULAIRE DES POUTRES

Cas de chargesRéactions

aux appuisMoment maximumflèche

L en m

H en mm

s en DaN/mm²Flèche à l/2Rotation aux appuis2P42/PLML=hL279.0s EILP 48

3EILPA16

2-=q

EILPB16

2+=q

LPbRA=

LPaRB=

LPabMaM==0

22/PbML=(a>b)

()bLEIbPfl2423482/--=

EILbaPfa3

22-=
()bLEILbPf223327max--= ()LbEIL

PbA226-=q

()aLEILPaB226-=q

P32/PLML=hL201.1s

EILP 648
323

23P22/PLML=hL284.0s

EILP 384
319

P2532/PLML=hL20.1s

EILP 1000
363

PPaML=2/hL2s

EI aLPa 24
)2423(-

23P1252/PLML=hL294.0s

EILP 1296
353

22P22/PLML=hL294.0s

EILP 768
341
2 qL 8 2Lq hL299.0s EI Lq 384
45EI
LqA24 3-=q EI LqB24 3+=q 4 qL 12 2Lq hL295.0s EI Lq 120
4EI

LqA192

35-=q
EI

LqB192

35+=qCas de charges

multiples hL2s» 6 qLRA= 3 qLRB= 27
32
0LqM= 16 2

2/LqML=

LqfL768

452/-=

Lqf765

45max-=

LqA360

37-=q
EI

LqB360

38+=q
()baqRA+=2 ()baqRB+=2 ()aLqMLM2423242/0-==÷÷ ae-+-==384 45
120
4 48
22

2/maxLaLa

EI qfLf ()LaaLEI qA332

224--+=q

()LaaLEI qB223324-++=q ()2aLL qaRA-= 2 2/0 2 xqxRALMx-= ()LaEI aqfL232296 2 2/--= L aqRB2

2=()222/axqaxRALLMx--=

LqfL768

452/-=

--+-=4 2)2( 2 16 4

482/LaLaLEI

qfL L MRA-= L MRA+=

MMAM==0

0=MB EI

LMfL16

2 2/-= EI

LMfi58.15

2 max-= EI

MLA3-=q

MLB6+=q

L MRA-= L MRA+=

LMaMaw-=

LMbMae+=

()baEIL

Mabfa-+=3

()LaEI MfL22

4162/-+=

ae--+=L LaEI MAa23 2 q ae--=L L EI MBa26 2 q 2

PaRBRA==()aLPaMm-+=28()aLaLEI

PafL324383842/+-=

PRA=PLMA-=EI

LPfB3 3-=EI LPB2 2+=q

PRA=PbMA-=EI

bPfB3quotesdbs_dbs2.pdfusesText_2

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