CÁLCULO DE Area Do Aço PILARES DE CONCRETO

 

BÍLBVLJ NF QGLM[FR NF BJDB[F^J ‒ QGLM[ BV[^J BMRJ FUF@QLJ3

= QMRRJ3 Bílbulj nj àdngbf nf f fskfltfs skfltfs Qmrm x0

JKR3 2,>8 ç u` bjfhbgfdtf nf `ulplgbmïâj

ιfx0 2,>8 x mlturm nj pglmr

Rfïâj dj fgxj x ιfx0 2,>8 x 2,11 0 2>,81  

< 26 sf fdqumnrm djs pglmrfs burtjs.

21

Qmrm y0

JKR3 2,>8 ç u` bjfhbgfdtf nf `ulplgbmïâj

ιfy0 2,>8 x mlturm nj pglmr

Rfïâj dj fgxj y ιfy0 2,>8 x 2,11 0 ;7,86 < 26 sf fdqumnrm djs pglmrfs burtjs.  

26

;³ pmssj3 Bílbulj nj `j`fdtj `àdg`j3 @`gd (^rmkmlemrf`js f` `ftrjs) Qmrm x0

@x0 (1,1=6+1,12x e)x DN @x0 (1,1=6+1,12x 1,2 )x =?61 ID @x 0 >;,1 ID.`

JKR3 e0 sfïâj nj pglmr DN 0 =;61iod x =,> (mtjr sfourmdïm) 0 =?61 iD

Qmrm y0

@y0 (1,1=6+1,12x e) x DN @y0 (1,1=6+1,12x 1,26) x =?61 ID @y0 >>,8 ID.`

JKR3 e0 sfïâj nj pglmr DN 0 =;61iod x =,> (mtjr sfourmdïm) 0 =?61 iD

 

JKR3 MB0 1,26 U 1,21 0 1,=16 @»

2³ Qmssj3 Àdngbf nf rfsgstãdbgm X0 DN

X0 =?61

Mb x Hbn

0 1,722

1,=16 x=?561

Hbn0 bi / mtjr sfourmdïm bn0 ;6 /=,> 0 =?,56 `pm Qmrm fssf pmssj grf`js trmdsjr`mr pmrm Ipm. Qmrm gssj, ç sò s ò `ulplgbmr j vmljr nf bnpjr =.111

>³ Qmssj3 Burvmturm nm sfïâj brgbm Qmrm x 0

μx0  

@x Mb x e x Hbn

0 >;,1

0 1,1?6

1,=16 x 1,2 x =?561

Qmrm y0

μy0   6³ Qmssj

@y Mb x e x Hbn

0 >>,8

0 1,185

1,=16 x 1,26 x =?561

 

  JKR3 Qmrm fdbjdtrmr m mr`mnurm mr`mnurm nj mïj grf`js ulgzmr j íkmbj j trmïm trmïmdnj dnj bj` js vmljrfs fdbjdtrmnjs rfhfrfdtfs m μ f X.

= pmssj dj íkmbj3 Qfom j vmljr nf X 0 1,722 ; pmssj 3 Qfom j vmljr nf μ 0 1,1?6 2 pmssj3 Qfom j vmljr nf

μ 0 1,185

JKR3 J pjdtj jdnf ms lgdems sf bruzm` ç j pjdtj jdnf grf`js fdbjdtrmr m pfrbfdtmof` nf mr`mnurm.

Dj mkmbj fstm nf`jdstrmnj pflm sftm vfrnf uds dó`frjs. ]umdnj ms lgdems sf bruzm` m burvmturm djs `jstrm quf bm`js djs vmljrfs fdtrf =,; f =,> . Fdtâj djssj vmljr pfrbfdtuml ç nf =,2 % f =,; %. Qmrm sfougr m sfourmdïm grf`js pfomr j `mgjr vmljr quf ç =,2 %. 8³ Qmssj3 Bílbulj nm mr`mnurm (grf`js trmkm trmkmlemr lemr f` b`) MR0 pfrbfdtmof` quf fdbjdtrm`js x MB 0

MR 0 p. mb

MR0 =,2 x 21 x 26 0 =2,? b` b`»» írfm nm mr`mnurm nj mïj.  

=11

?³ Qmssj3 Dm tmkflm nf mr`mnurm nj mïj

 

]umdnmnf nf kmrrms

Qmrm djssj bmsj fsbjlef`js u`m kgtjlm nf =;,6 `` Djssj bílbulj nfu quf tf`js u`m írfm nf mïj nf =2,? b`» jlemdnj pflm tmkflm pjr `mgs quf bjljbíssf`js =1 kmrrms sò befomràm`js mj vmljr nf =;,61 írfm nj mïj. Fdtâj, grf`js ngvgngr =2,? / =, ;6 0 =1,78 kmrrms. @ms bj`j dâj trmkmlejs bj` dó`frjs g`pmrfs n kmrrms, vm`js mrrfnjdnmr pmrm =; kmrrms. =,;6 rfpfsfdtm dfssf bmlbulj m mrfm nj mïj pmrm = kmrrm. Xfcm dm tmkflm mbg`m. Hgbju nfssm jr`m m ngstrgkugïâj3

[forms njs fstrgkjs3 J vmljr nf Ψ0=,;6

  quf fsbjlefr 6`` pjrquf j fstrgkj dâj Qmrm djssj bmsj3 =;,6 / > 0 2,=;6 `` pflm rform dòs tfrf`js quf pjnf sfr `fdjr quf 6``. Fdtâj m fspfssurm nm mr`mnurm sfrí nf 6``.

J

fspmïm`fdtj sfrí m sfougdtf fqumïâj3

=; x

=,;6 0 =6 b` j fspmïm`fdtj.