L-07 Introduction to Prestressed Concrete (Coloured)

7/23/2019 L-07 Introduction to Prestressed Concrete (Coloured)

http://slidepdf.com/reader/full/l-07-introduction-to-prestressed-concrete-coloured 1/20

Xrad. Kr. Zjbsjr Job ]gbndaregk Eanergtg Kgsbfn ― BB

Kgpjrt`gnt ad Ebvbo Gnfbnggrbnf, Wnbvgrsbty ad Gnfbnggrbnf jnk [gelnaoafy Xgsljwjr

Ogeturg - 86

Bntrakuetban ta

Xrgstrgssgk Eanergtg

My9 Xrad Kr. Zjbsjr Job

Ebvbo Gnfbnggrbnf Kgpjrt`gnt

WG[ Xgsljwjr www.krqjbsjrjob.ea`

:



[apbes

Bntrakuetban

Xrbnebpog ad Xrgstrgssbnf

Jkvjntjfgs ad Xrgstrgssgk Eanergtg

Xrgstrgssbnf Utggo

Lbfl Utrgnftl Eanergtg usgk dar Xrgstrgssgk Eanstruetban

@gtlaks ad Xrgstrgssbnf

=





Bntrakuetban

Mjecfraunk

Eanergtg bs mjsbejooy j ea`prgssbvg `jtgrbjo, wbtl bts strgnftl bn

tgnsban mgbnf rgojtbvgoy oaw.

Xrgstrgssbnf jppobgs j prgea`prgssban ta tlg `g`mgr tljt rgkuegs

ar gob bnjtgs unkgsbrjmog tgnsbog strgssgs tljt wauok atlgrwbsg mg

prgsgnt.

5

]gbndaregk eanergtg

erjecgk unkgr oajk.

Xast-tgnsbangk eanergtgmgdarg oajkbnf.

Xast-tgnsbangk eanergtg

jdtgr oajkbnf.



;






7




Ua`g b`partjnt eaneousbans ejn mg krjwn dra`

prgvbaus sb`pog gxj`pogs9

Xrgstrgssbnf ejn eantrao ar gvgn gob bnjtg eanergtg tgnsbog

strgss dar spgebdbgk oajks.

Geegntrbe prgstrgss bs usujooy `uel `arg gddbebgnt tljn

eanegntrbe prgstrgss.

Tjrbjmog geegntrbebty bs usujooy prgdgrjmog ta eanstjnt

geegntrbebty, dra` tlg vbgwpabnts ad matl strgss eantrao jnk

kgdogetban eantrao.

4






6

Jkvjntjfgs ad Xrgstrgssbnf

Xrgstrgssbnf rgsuots bn tlg avgrjoo b`pravg`gnt bn pgrdar jnegad strueturjo eanergtg usgk dar arkbnjry oajks jnk spjns.

Xrgstrgssbnf gxtgnks tlg rjnfg ad jppobejtban djr mgyank tlg

ob bts dar arkbnjry rgbndaregk eanergtg, ogjkbnf nat anoy ta `uel

oanfgr spjns wbtl geana`bejo `g`mgr erass sgetbans tljn

prgvbausoy tlauflt passbmog, mut pgr`bttbnf bnnavjtbvg ngw

strueturjo dar`s ta mg g`poaygk.



<

Jkvjntjfgs ad Xrgstrgssbnf

Amigetbanjmog kgdogetban jnk erjecbnf, wlbel wauok atlgrwbsg

mg jssaebjtgk wbtl tlg usg ad nan prgstrgssgk rgbndaregk

eanergtg `g`mgrs jt lbfl strgss, jrg gjsboy eantraoogk my

prgstrgssbnf.





B`partjneg ad Lbfl Utrgnftl Utggo

2

Utrgss vjrbjtban wbtl strjbnGddget ad slrbncjfg jnk erggp ad eanergtg bn rgkuebnf

prgstrgss dareg dar jxbjooy prgstrgssgk mgj`

Xrgstrgssbnf Utggo




[lg bnbtbjo strjbn bn tlg stggo bs9

ηsb 0 d sb/Gs 0 58/=2888 0 :.85 x :8-5

Jnk tlg stggo goanfjtban bs9

Λs 0 ηsbo s 0 :.85 Ö :8-5o s

[lg su` ad slrbncjfg jnk erggp strjbn bn tlg eanergtg bs

jmaut 8.28 Ö :8-5, jnk tlg earrgspankbnf ognftl eljnfg bs9

(ηsl + ηeu)o e 0 8.28 Ö :8-5o e

:8

Xrgstrgssbnf Utggo






Ubneg o s jnk o e jrg ngjroy tlg sj`g dar d st 0 58 csb, wlbel

`gjns tljt tlg ea`mbngk gddgets ad slrbncjfg jnk erggp ad

tlg eanergtg bs jo`ast j ea`pogtg oass ad tlg strgss bn stggo.

[lg gddgetbvg stggo strgss rg`jbnbnf jdtgr tb g-kgpgnkgnt

gddgets wauok mg d sg 0 (:.85 ― 8.28) Ö :8-5 Ö = 2 Ö : 85 ≌ ; csb

::

Xrgstrgssbnf Utggo




Dar lbfl strgnftl stggo jt jn bnbtbjo strgss ad :78 csb, tlg

bnbtbjo strjbn wauok mg9

ηsb 0 :78/=2888 0 7.:6 Ö :8-5

ηsbo s 0 7.:6 Ö :8-5o s

[lg gddgetbvg stggo strgss d sg jdtgr oassgs kug ta slrbncjfg

jnk erggp wauok mg d sg 0 (7.:6 ― 8.28) Ö :8-5 Ö =2 Ö :85 0

:=; csb

[lg oass bs jmaut :6 pgregnt ad tlg bnbtbjo stggo strgss bn tlbs

ejsg ea`pjrgk wbtl <6 pgregnt oass wlgn `bok stggo wjs

usgk.

:=

Xrgstrgssbnf Utggo





[ypgs ad Lbfl Utrgnftl Utggo

]aunk wbrgs

Vbrgs jrg nar`jooy munkogk bn fraups ad up ta jmaut 78

bnkbvbkujo wbrgs ta prakueg prgstrgssbnf tgnkans ad tlg rgqubrgk

strgnftl.

Utrjnkgk ejmog

Utrjnkgk ejmog, `arg ea``an tljn wbrg bn W.U. prjetbeg, bs

djmrbejtgk wbtl sbx wbrgs waunk jraunk j sgvgntl ad sobfltoy

ojrfgr kbj`gtgr.

Jooay stggo mjrs

Jvjbojmog bn tlg dar` ad kgdar`gk mjr sb`bojr ta rgbndarebnf mjr

:5

Xrgstrgssbnf Utggo




Ubzgs

:;

Utggo Kbj`gtgr rjnfg, bnel (``)

Xrgstrgssbnf Vbrg 8.:2= ta 8.=64 (7 ta 6 ``)

Utrjnk 8.=78 ta 8.488 (4 ta :7 `)

Jooay Utggo Mjrs

8.678 ta :.567 (:2 ta 57 ``)

(js pojbn raunk mjrs)

8.4=7 ta =.78 (:4 ta 45 ``)

(js kgdar`gk mjrs)

Xrgstrgssbnf Utggo






[gnsbog Rbgok Utrgnftl

:7

Utggo Frjkgs (csb)

]aunk wbrgs =57, =;8, =78

Utrjnks (6-wbrgk)

=78 (d pu 0 =78 csb)

=68 (àst adtgn usgk)

588 (nat rgeafnbzgk my JU[@ J;=:)

Jooay stggo mjrs :78 (rgfuojr frjkg, àst ea`àn):48 (spgebjo frjkg, jy mg arkgrgk)

Xrgstrgssbnf Utggo



Utrgss-Utrjbn Eurvgs

:4

[lg ybgok strgnftl bs sa`gwljt

jrmbtrjrboy kgdbngk js tlg strgss jt j tatjo

goanfjtban ad : pgregnt dar strjnk jnk

wbrg jnk jt 8.6 pgregnt dar jooay stggo

mjrs.

Xrgstrgssbnf Utggo






:6

[lg prgstrgssbnf stggos ljvg

sbfnbdbejntoy ogss kuetbobty.

Xrgstrgssbnf Utggo



Gojstbe @akuous dar vjrbaus Lbfl Utrgnftl Utggos

:<

Utggo G s (psb)

Wn-mankgk strjnk =4,888,888 psb

Mankgk strjnk ≌ =6,888,888 psb

U`aatl raunk wbrgs≌ =2,888,888 psb (sj`g js dar

rgbndarebnf mjr)

Jooay stggo mjrs =6,888,888 psb

Xrgstrgssbnf Utggo





]gojxjtban

Vlgn prgstrgssbnf stggo bs strgssgk ta tlg ogvgos tljt jrg

eusta`jry kurbnf bnbtbjo tgnsbanbnf jnk jt sgrvbeg oajks, bt

gxlbmbts j prapgrty cnawn js rgojxjtban.

]gojxjtban bs kgdbngk js tlg oass ad strgss bn strgssgk

`jtgrbjo lgok jt eanstjnt ognftl.

[lg sj`g mjsbe plgna`gnan bs cnawn js erggp wlgn

kgdbngk bn tgr`s ad eljnfg bn strjbn ad j `jtgrbjo unkgr

eanstjnt strgss.

:2

Xrgstrgssbnf Utggo



]gojxjtban

[a mg spgebdbe, bd j ognftl ad prgstrgssbnf stggo bs strgssgk ta

j sbzjmog drjetban ad bts ybgok strgnftl d py (sjy <8 ta 28

pgregnt) jnk lgok jt j eanstjnt strjbn mgtwggn dbxgk pabnts

suel js tlg gnks ad j mgj`, tlg stggo strgss d p wboo frjkujooy

kgergjsg dra` bts bnbtbjo vjoug d pb.

=8

Xrgstrgssbnf Utggo





]gojxjtban

J sjtbsdjetary gstb`jtg dar arkbnjry strgss rgobgvgk strjnk

jnk wbrgs ejn mg amtjbngk dra` gq. (:), wlbel wjs kgrbvgk

dra` `arg tljn ;88 rgojxjtban tgsts ad up ta 2 ygjrs

kurjtban9

Vlgrg, d p0 dbnjo strgss jdtgr t laurs, d pb 0 bnbtbjo strgss, jnk d py 0

na bnjo ybgok strgss.

Dar oaw-rgojxjtban strjnk, gq. (:) bs rgpojegk my9

=:

Xrgstrgssbnf Utggo



Lbfl Utrgnftl Eanergtg Wsgk dar

Xrgstrgssgk Eanstruetban

==

Kgdbnbtban

Jotlaufl tlg gxjet kgdbnbtban bs jrmbtrjry, tlg tgr` fgngrjooy

rgdgrs ta eanergtg ljvbnf unbjxbjo ea`prgssbvg strgnftl bn

tlg rjnfg ad jmaut <888 ta :7,888 psb ar lbflgr.

Uuel eanergtgs ejn mg `jkg usbnf ejrgduooy sgogetgk mut

wbkgoy jvjbojmog eg`gnts, sjnks, jnk stang3 egrtjbnjk`bxturgs bneoukbnf lbfl-rjnfg wjtgr-rgkuebnf supgr

pojstbebzgrs, doy jsl, jnk sbobej du`g3 pous vgry ejrgduo qujobty

eantrao kurbnf prakuetban.







=5

Jkvjntjfgs

Lbfl strgnftl eanergtg ljs j lbflgr gojstbe àkuous tljn tlg

oaw strgnftl eanergtg, sa tljt oass ad prgstrgss dareg

rgsuotbnf dra` gojstbe slartgnbnf ad tlg eanergtg bs rgkuegk.

Erggp jnk slrbncjfg oassgs jrg josa oaw.

Lbfl mgjrbnf strgssgs bn tlg vbebnbty ad tgnkan jnelarjfgs

dar past tgnsbangk `g`mgrs jrg àrg gjsboy jeea`àkjtgk.

Bn tlg ejsg ad prgtgnsbangk gog`gnts, lbflgr mank strgnftlrgsuots bn j rgkuetban bn tlg kgvgoap`gnt ognftl rgqubrgk ta

trjnsdgr prgstrgss dareg dra` tlg ejmogs ta tlg eanergtg.





=;

Jkvjntjfgs

Dbnjooy, eanergtg ad lbflgr ea`prgssbvg strgnftl josa ljs j

lbflgr tgnsbog strgnftl sa tljt tlg dar`jtban ad dogxurjo jnk

kbjfanjo tgnsban erjec bs kgojygk.








=7

[ypbejo sgt ad ea prgssbvg strgss

strjbn eurvg dar nar`jo kgnsbty

eanergtg, amtjbngk dra` unbjxbjo

ea`prgssbvg tgst pgrdar`gk jt

nar jo, àkgrjtg tgstbnf spggks

an eanergtgs tljt jrg =< kjys aok

Lbfl strgnftl eanergtg jrg àrg

mrbttog.




Xrgstrgssgk Eanstruetban Utrgss-Utrjbn Eurvgs

=4

Bn prgsgnt prjetbeg, ea`prgssbvg strgnftl

mgtwggn ;888 jnk <888 psb (=< jnk 77

@Xj) bs ea`ànoy spgebdbgk dar

prgstrgssgk eanergtg `g`mgrs, jotlaufl

strgnftls js lbfl js :=888 psb (<5 @Xj)

ljvg mggn usgk.








=6

Bt slauok mg g`pljsbzgk, lawgvgr, tljt

tlg eanergtg strgnftl jssu`gk bn tlg

kgsbfn ejoeuojtbans jnk spgebdbgk `ust

mg jttjbngk wbtl egrtjbnty, mgejusg tlg

ejoeuojtgk lbfl strgssgs rgsuotbnf dra`

prgstrgss dareg rgjooy ka aeeur.




Jotlaufl `jny `gtlaks ljvg mggn usgk ta prakueg tlg kgsbrgk

stjtg ad prgea`prgssban bn eanergtg `g`mgrs, joo prg-strgssgk

eanergtg `g`mgrs ejn mg pojegk bn ang ad twa ejtgfarbgs9

Xrg-tgnsbangk,

Xast-tgnsbangk.

=<





Xrg-tgnsbanbnf (Xraegkurg)

[lg strjnks jrg tgnsbangk avgr tlg duoo ognftl ad tlg ejstbnf

mgk jt ang tb g, jdtgr wlbel j nu`mgr ad bnkbvbkujo `g`mgrs

jrg ejst joanf tlg strgssgk tgnkan.

Vlgn tlg ijecbnf dareg bs rgogjsgk, tlg prgstrgss dareg bs

trjnsdgrrgk ta gjel `g`mgr my mank, jnk tlg strjnks jrg eut

drgg mgtwggn `g`mgrs.

=2




Xrg-tgnsbanbnf (Xraegkurg)

Bn prgsgnt prjetbeg jnelarjfg jnk ijecbnf jmut`gnts `jy

mg js `uel js <88 dt jpjrt.

Ejmog kgprgssars jrg adtgn usgk wbtl oanf-obng prgstrgssbnf,

iust js wbtl bnkbvbkujo `g`mgrs.

58






Xrg-tgnsbanbnf

5:




Xrg-tgnsbanbnf

5=






Xrg-tgnsbanbnf (Jkvjntjfgs)

Vgoo subtgk ta tlg `jss prakuetban ad mgj`s usbnf tlg oanf-

obng `gtlak ad prgstrgssbnf.

Xrgtgnsbanbnf bs j pjrtbeuojroy geana`bejo `gtlak ad

prgstrgssbnf, nat anoy mgejusg tlg stjnkjrkbzjtban ad kgsbfn

pgr`bts rgusjmog stggo ar dbmgrfojss dar`s, mut josa mgejusg

tlg sb`uotjngaus prgstrgssbnf ad `jny `g`mgrs jt aneg

rgsuots bn frgjt sjvbnf ad ojmar. Bn jkkbtban, gxpgnsbvg gnk-

jnelarjfg ljrkwjrg bs gob bnjtgk.

55




Xast-tgnsbanbnf

Wsujooy laooaw eankubts eantjbnbnf tlg unstrgssgk tgnkans

jrg pojegk bn tlg mgj` dar`s, ta tlg kgsbrgk pradbog, mgdarg

paurbnf tlg eanergtg.

[lg eankubt bs wbrgk ta juxbobjry mgj` rgbndareg`gnt

(unstrgssgk stbrrups) ta prgvgnt jeebkgntjo kbspojeg`gnt,jnk tlg eanergtg bs paurgk.

Vlgn bt ljs fjbngk suddbebgnt strgnftl, tlg eanergtg mgj`

btsgod bs usgk ta pravbkg tlg rgjetban dar tlg strgssbnf ijec.

5;






Xast-tgnsbanbnf

Vbtl tlg tgnkan jnelargk my spgebjo dbttbnfs jt tlg djr gnk ad

tlg `g`mgr, bt bs strgtelgk, jnk tlgn jnelargk jt tlg ijecbnf

gnk my sb bojr dbttbnfs, jnk tlg ijec rg`avgk.

[lg tgnsban bs fjufgk my `gjsurbnf matl tlg ijecbnf

prgssurg jnk tlg goanfjtban ad tlg stggo.

[lg tgnkans jrg nar`jooy tgnsbangk ang jt j tb g, jotlaufl

gjel tgnkan `jy eansbst ad `jny strjnks ar wbrgs.

57




Xast-tgnsbanbnf

54






Xast-tgnsbanbnf (Jkvjntjfg)

J sbfnbdbejnt jkvjntjfg ad joo past-tgnsbanbnf selg`gs bs tlg

gjsg wbtl wlbel tlg tgnkan geegntrbebty ejn mg vjrbgk joanf

tlg spjn ta pravbkg tlg kgsbrgk eauntgr `a`gnt.

56

Jnelar moaecs jnk wgkfgsXast tgnsbanbnf unkgr prafrgss Eankubt




5<

Xrgstrgssgk anergtg Xojnt Tbkga





Kgsbfn ad Eanergtg Utrueturgs :5 Gk. my Nbosan, Kjrwbn jnk

Kaojn.

52

]gdgrgnegs



[lg Gnk

;8

L-07 Introduction to Prestressed Concrete (Coloured)

Documents

Transcript of L-07 Introduction to Prestressed Concrete (Coloured)