bending design.pdf

8/13/2019 Bending Design.pdf

1/30

1

CMBUk - III karKNnabegkarkMNt;EdksMrab;Fw

GnuelamtambTdan ACI 318-M08


2/30

2

1-muxkat;ctuekaNbMBak;Edkma eyIgdwgehIyfa

2' 1 0.59n c M f bd

2n n M bd k

eyIgeXIjfa sMrab;m:Um:g;mYy nig ebtugsal; Edksal; eyIgenAmGBaatibIKW kMras;Fwm kMBs;RbsiTPaB nigPaKryEdb d

' 1 0.59n ck f

' y

c

f

f ; s

Abd


3/30

3

1>1 krNITI1 krNIkMnt;muxkat;TUeTA

eyIgGacsntyk BItaragxageRkam. rYc RtUv)anKNna.bnab;mkeyIg KNna edaysntyk

rW .

s u R

d b, 3/1 bd

0.01 CMerIssnSMsMc

CMerIslsMrab;PaBsVit 0.015 srsEdkENnBi)aktMerob

6.03.0/ d b

max75.05.0


4/30

4

]TahrN_krNITI1

cUrKNnavimaRtF wm nigbrimaNEdkrbs;Fwmbgajk grUbTI 3hb,

edaydwgfa

6m

LL=10kN/m

DL=21kN/m

b ?

h ?

f c=25MPa

f y=400MPa

rUbTI 3>1 FwmTMrsamBa


5/30

5

CMhannkarKNna

1-KNnam:Um:g;dac;xat M

u= M

n

2-kMnt;PaKryEdkedayEpkelIlkxNPaBsVitrbs;Fwm

3-KNnakkam:Um:g;4-KNna bd 2

5-KNna b rW d edasntyk6-KNnaA s rYcep gpat;

7-KNna

31 bd

l

h

2

; u

n

M

bd k

' 1 0.59

n ck f

10.375TCL

t t

aad d


6/30

6

1>2 krNITI2 krNIminsal;brimaNEdk ebIeyIgsal; brimaNEdkcaM)ac;GacKNnatamd b,

2'7.14

11'85.0

bd f M

f f

c

u

y

c

eBlEdl RtUvsal; eyIgKYEtepgpat;ebIEdksgt;caM)ac; rWminc)ac;

muneFVIkarKNnamuxkat;Edk.

d b,

1- kMNt;rkPaKryEdk

n u M M 4-ep gpat;fa

2

40.85 1 1

1.7 'u

c

M f bd

s A bd 2-brimaNEdkcaM)ac;sMxkat;

3-rkemKuNkat;bnyP GaRsynwg

ccd t

ut

65.0,9.0,325045.1

minmax t


7/30

7

1>3 krNITI3 krNIsal;vimaRtFwmEtmYy ebIeyIgsal; eyIgRtUvKNnab,

u

n

M d

k b

bd A s

' 1 0.59n ck f

ehIy

mmd h 65

sMKal; kMBs;h GacykCadMbUges Inwg

mmd h 90 sMrab;EdkbeNaymYyCYr sMrab;EdkbeNayBIrCYr 25)1(65 r nd h sMrab;EdkbeNayBIr rWeRcInCYn r

CacMnYnCYrQrnEdkbeNay


8/30

8

2- KMlatnbNajEdknigkMras;RsT2>1 tMrUvkartambTd anedIm,IeGaykareFVIkarrbs;EdkCamYyebtug)anl eyIgRtUverobcMedkdU

KMlatEdkedk kMras;RsTab;karBarGb,brimasMrab;FwmKW38mm nigsMrab;kMralKW20mm

)25;max( mm D s bar nigKMlatbBarEdk mm s 25

h1

d1

b 1

D s D s D

cc

D s

h1

d1

b 1

D s D

c

c

D s

DsD

rUbTI 3>2-1 KMlatEdkGb,brima


9/30

9rUbTI 3>2-2 KMlatEdkGb,brima


10/30

10rUbTI 3>3 KMlatEdkGb,brima RsbtambTdanACI


11/30

11rUbTI 3>4 KMlatEdkGb,brimaTaMgCYrEdk nigCYrQ


12/30

12

rUbTI 3>5 kartMerobEdk Edlman2CYredk


13/30

13

2>2 TTwgGb,brmarbs;muxkat;

CaTUeTATTwgGb,brmarbs;F wm GacKNna)antamrUbmcteTA

KMlatEdk

TTwgGb,rma

ebIeyIgyk

c D snnDb s 22)1(min

Ggt;pitEdkbeNay Ggt;pitEdkTTwgEdkkg

b min

D

D s

s

mm snnDb 96)1(min

D s=10 mm, c = 38 mm

eyIg)an

n cMnYnCYrQnEdkc kMras;RsTab;kar

)()(2min

s Dc D sb

n s


14/30

14

2>3 kBs;Gb,brmarbs;muxkat;kMBs; rWCMerARbsiTPaB KWCacMgayBI

EKmsgt;eTATIRbCuMTMgn;rbs;EdkTaj.kMBs;srubGtibrima GacKNnatam

rUbmndUcxageRkam

kMBs;RbsiT iPaBrbs;muxkat;F wm

c D D

d h s 211

Ggt;pitr)abeNay Ggt;pitr)aTTwg

d1

D

D s

c b kMras;RsTab;karBa

h1d1

b 1

c b

c b

D s

DsD

D s D

c cMgayBITIRbCu MTMgn;EdkeTA)atFwm nig

rUbTI 3>6 kMBs;FwmGb,b


15/30

15

kMBs;srubGtibrimarbs;muxkat; eBleRbIEdkeRcInRsTab;GacKNnatamrUbmndUcxageRkam

nhr cMnYnCYredk nvr cMnYnCYrQ n blr cMnYnEdkkgCYredkcugeRkay

t

blr hr

vr

hr sb

n

nn

nn D s

D Dcc 2

)2(

)1)((2

2

)1)((

2

hr sb

n D s D Dcc

sMrab;bNajEdk EdlCYrcugeRkaymancMnYnEdkticCagkgCYrepSgeTo

sMrab;bNajEdk EdlCYrnImYymancMnYnEdkesIKa


16/30

16

TTwgGb,brmarbs;F wm

KMlatCYrEdkQ

c D sn Dnb svr vr vr

22)1(min

)1(

)(2

vr

svr wvr

n

c D Dnb s


17/30

17

3- lMhat;]TahrN_

1-kMnt;muxkat;ctuekaNEdlrgm:Um:g;dac;xat edayeRbIPaKryEdkGtib,rma nigdwgfa

mmb s 356%;1

kNm560 MPa f MPa f yc 400;21'

2-kMnt;muxkat;ctuekaNEdlrgm:Um:g;dac;xat edayeRbIPaKryEdknigdwgfa

kNm560

MPa f MPa f yc 400;21'

mmd mmb 710,250 3- KNnamuxkat;EdkcaM)ac;sMrab; ;muxkat;ctuekaNEdlrgm:Um:g;dac;xatedayeRbIPaKryEdknigdwgfa

kNm333



18/30

18

4- muxkat;bMBak;EdkDubEdkTat;

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m: Um:g;lTPaBRTRTg;kg enaHmuxkat;bMBak;Edksgt; rWehAmbMBak;ERtUveRbIR)as;. lMdab;nkarKNnamuxkat;bMBak;Edksgt;nwgbgaj dUcxageReBlEdleyIgsal;tMln .

1- KNnaPaKryEdkGtib,rma

';;;;'; d d b f f M ycu

CamYy

)003.0

003.0('85.0 1maxt y

c

f f

004.0t


19/30

19

eFV Ikarep gpat;rvagm:Um:g;eRkAnwgm: Um:g;lTPaBRTRTg;kgGtmax

2

2 uu Rbd M

2- KNnam:Um:g;Gtib,rma

c

y yu f

f f R

'7.11 maxmaxmax

2? uu M M

ebI 2uu M M Edksgt;minRtUvkar mannymuxkat;Camuxkat;bMBak;Edkag

2

'7.1

411

'85.0

bd f

M

f

f

c

u

y

c

bd A s

eyIgGacKNnarkPaKry rYcrkbrim


20/30

20

Edl

21 uun M M M 3- KNnam:Um:g;bEnm

bd A s max2

ebI 2uu M M Edksgt;RtUvkar eyIgRtUveFVIkarKNnarkbrimaNEdkdU

4- KNnaEdkTajbEnm )'(1

1 d d f M

A y

u s 21 s s s

A A A

5- KNnakMlaMgsMBaFpk gEdksgt;

b f

f Aa

c

y s

'85.02

1 ac

y

s s f d c

c

E f ),'(

003.0min'

6- KNnamuxkat;Edksgt;)'('

'd d f

M A

s

u s


21/30

21

4>1 ]TahrN_

1- FwmmYymanTTwg nigkMBs; ehIyRtUvTb;m: Um:gKNnabrimaNEdk edaydwgfa

cm25


2- kMnt;muxkat;EdkcaM)ac;rbs;muxkat;Edlrgm:Um:g;dac;xatedaydwgfa

kNm448


mmhmmb 510,300

cmh 55

kNm357


22/30

22

5- muxkat;ragGkSret

sMrab;RbBn kMral;-Fwm vimaRtrbs;kMral nigKMlat rWTItaMgFwmRtUerobcMCadMbUg. bnab;mk eyIgRtUvKNnamuxkat;Fwm rYmmankarKvimaRttYF wm nigkarKNnabNajEdk. kgkarKNnamuxkat;RcMeBaHm: Um:g;dac;xat / kMras;kMral; nigTTwgsamFwm GacKNTTwgtYFwmGacsntykBI . dUecH eyIgGacKNnaF wmGkS

edaydwgfa . ycu f f M ;';

u M

cm5020


23/30

23

5>1 eBlkMras; d s al;

k- ep gpat;famuxkat;eFVIkardUcctuekaN rWCamuxkat;GkSret edaysnt;rYcKNnam:Um:g;lTPaBRTRTg;rbs;sabTaMgmUl.

ebI enaH eyIgniyayfamuxkat;GkSet.ebI enaH dUecH muxkat;eFVIkardUcmuxkat;ctuekax- ebI

f ha

2

)'85.0()( f f cnf h

d hb f flange M

nf u M M f ha

nf u M M f ha

f ha karKNnaeFV IdUcxageRkam

2

'7.1

411

'85.0

bd f

M

f

f

c

u

y

c

bdA


24/30

24

K-ebI

m:Um:g;Tb;edaytYFwmKW

y

f wc sf f

hbb f A )('85.0

21 nun M M M

f ha karKNnaeFV IdUcxageRkam

21

'7.14

11'85.0

d b f M

f f

wc

n

y

cw

d b A ww sw

22 f

y sf n

hd f A M

KNnabrimaNEdksrub sw sf s A A A

bd A s

epgpat;faweb f w max,75.0

min d b A

w

sw


25/30

25

5>2 eBlmins al;kMBs; nigbrimaNEdkd, A sk- snt;yk

K- eyIgGacerIsyktMld Edl)anKNna rWyktMld NamYyepSgeTehIyeyIgEtRtUveFV IkarKNnamuxkat;EdkeLIgvij.

f ha

y

f chf sf f

bh f A

'85.0,

2, f

yhf sf uhd f A M

d x- KNna BIsmIkarxageRkam

kgRKb;krNI brimaNEdkcaM)ac;minRtUvticCagbrimaNEdkGb

EdkGb,brma KNnatamrUbmn

y

c

y f

f

f 4

';

4.1maxmin


26/30

26

5>4 lMhat;]TahrN_1- manF wmGkSretmYydUcbgajkgrUbTI 3>7. cUrKNnamuxkat;Egfam:Um:g;dac;xatKW .EdleRbIsMParH

kNm M u 430

MPa f MPa f yc 400,25'

100cm

37cm46cm

25cm

10cm

rUbTI 3>7 muxkat;FwmGkSre


27/30

27

2- RbBnkMral-F wmmYydUcbgajk grUbTI 3>8. cUrKNnamuxkEdk

sMrab;F wm edaydwgfam:Um:g;eRkAdac;xat .eRbIsMParH

kNm M u 700


30cm

137cm

275cm 275cm

10cm

h=60cm

d= 44.5cm


28/30

28

3- KNnamuxkat;FwmetmYyedIm,ITb;nwgm: Um:g;dac;xat kNm M u 1100 MPa f MPa f yc 410,21'

4-sMrab;Fwmcak;eRscmuxkat;GuImYydUcbgajk grUb.cUrKNnamuxkat;Edkedaydwgfa

122 cm

d ?

30 cm

10 cm

kNm M u 489


edaydwgfa

10 cm

36 cm

25 cm 6 cm

A s ?

13 cm

15 cm

41 cm

A s ?


29/30

29

5-F wmmYymanTMrbn M dUck grUbRTbnkefr bEnmelIbnkGefrGCIvkm/ ehIyF wmrgkMlaMgefrcMnuc nigGefr Rtg;cMnucC BIA RbEvg .


5-k- KNnam:Um:g;dac;xatGtib,rmanigTItaMgrbs;va5-x- KNnamuxkat;ctuekaNedIm,IRTbn kedayeRbI EdkPaKrynigTTwgFwm cmb 50

edaydwgfa

mkN /35 mkN /22

kN 53 kN 36 m3

%2 s

d ?

9 cm50 cm

A s ?

PL=36 kN

PD=53 kN

300 cm 600 cm

w L=22 kN/m

w D=35 kN/m

A C B


30/30

30

6- KNnabrimaNEdksMrab;FwmmYyEdlRTm: Um:g;dac;xat

mmhmmb 600,300

edaydwgfa

mkN M u /696


600 mm

300 mm

A s ?

bending design.pdf

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