From: Subject: ACES PSC Module - PS Estimate Date: Sun, 12 Jul 2009 22:00:39 +0930 MIME-Version: 1.0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Location: file://C:\ACES6\Tempdata\PSC Module-Page-Data.htm X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 ACES PSC Module - PS Estimate

ACES PSC Design Module V1.000:   Run=20 date:  23-JUN-09
-------------------------------------------= ------------------------------------------------------
Heading: &= nbsp; Test=20 module
Job Name: AS5100 SUPER-T CLOSED TOP : = SUPERT-CLSD3
Designer:=20  GS

Comments: No comments

Units: =    mm, kN,=20 MPa, kN.m,=20 microstrain
----------------------------------------------------------= ---------------------------------------

DESIGN=20 CODE: AS5100.5-2004


DESIGN MOMENTS (M) & SHEARS (V)

  Self weight

Msw

=3D

600.0

  kN.m

Vsw

=3D

150.0

kN

  Insitu concrete slab

Mslab

=3D

500.0

  kN.m

Vslab

=3D

120.0

kN

  Superimposed DL

Msdl

=3D

50.0

  kN.m

Vsdl

=3D

20.0

kN

  Design live load

Mll

=3D

2000.0

  kN.m

Vll

=3D

500.0

kN

  Special Vehicle

Mhvl

=3D

0.0

  kN.m

Vhvl

=3D

0.0

kN

                       

DIFFERENTIAL SHRINKAGE   (AS5100.5-2004 Section = 6.1.7)

  Shrinkage strain in girder after being made = composite (u1)  

=3D

300.0

  microstrain
  Ultimate shrinkage strain in insitu slab = (u2)

=3D

450.0

  microstrain
  Differential shrinkage strain (u =3D u2 - = u1)

=3D

150.0

  microstrain
           
  Youngs Modulus of girder (Eg)

=3D

35000

  MPa
  Youngs Modulus of insitu slab (Es)

=3D

40000

  MPa
  Modular ratio (n =3D Es/Eg)

=3D

1.143

   
  Residual creep factor for girder (Rcf)

=3D

0.200

  (AS5100.5-2004 Clause E3.2.2)
           
  Area of insitu slab concrete (As =3D = Ws*Ts)

=3D

480000

  mm^2
  Height to centroid of slab from bottom of = girder=20 (Ys)  

=3D

1300

  mm
  Height to centroid of composite girder=20 (Yc)  

=3D

941

  mm
  Differential eccentricity (ec=3D = Ys-Yc)

=3D

359

  mm
           
  Shrinkage forces & moments are calculated = as per=20 AS5100.5-2004 Appendix E, Cl E3.2.3(a) viz:
           
  Shrinkage force Fshr =3D = u*Es*(As/10^9)*(1 -=20 EXP(-Rcf))/Rcf   

=3D

2610

  kN
  Shrinkage moment   Mshr =3D Fshr * = ec /=20 1000

=3D

936

  kN.m
           
           
  Shrinkage stresses:      
           
  SumNA =3D n*As + 1.0*Ag

=3D

  1.1340E+06

  mm2
  Fsus =3D Fshr*1000*(1/As - n/SumNA)

=3D

2.81

  MPa
  Fsug =3D - Fshr*1000 / SumNA

=3D

-2.30

  MPa 
           
  Stress at top of insitu slab (fts =3D Fsus = -=20 Mshr*10^6/Zst)

=3D

0.89

    MPa
  Stress at bottom of insitu slab (fbs =3D = Fsus -=20 Mshr*10^6/Zsb)

=3D

1.72

  MPa
  Stress at top of precast girder (ftg =3D = Fsug -=20 Mshr*10^6/Zgt)  

=3D

-3.25

  MPa
  Stress at bot of precast girder (fbg =3D = Fsug +=20 Mshr*10^6/Zgb)  

=3D

1.14

  MPa
           

PRESTRESS FORCES - PRELIMINARY ESTIMATE

Debonded bars are included in the analysis=20

Strand diameter (Ds) =3D 12.0 mm

 Row

Ybar (mm)

 Total no. of bars 

No. of debonded bars

No. of bars included

Ybar*No. bars included

1

  70 

8

0

8

560    

2

  150 

8

0

8

1200    

3

500 

4

0

4

2000    

4

1000 

4

0

4

4000    

5

1100 

8

0

8

8800    

6

300 

4

0

4

1200    

7

0 

0

0

0

0    

8

0 

0

0

0

0    

   

36

0

36

17760     =

  Total number of bars in the section

=3D

36

     
  Total number of debonded bars in the section

=3D

0

   
  Total number of bars included in the = analysis=20   

=3D

36

  (Nbbars)
  Sum of Ybar x number of bars included in = analysis

=3D

  17760

  (Ynbars)
           
  Distance from bottom of girder to girder = centroid=20 (Yb)  

=3D

605

  mm
  Distance from bottom of girder to CG = strands=20 (Ycgs)

=3D

493

  mm (Ynbars/Nbbars)
  Eccentricity of CG strands from CG girder = section=20 (e)

=3D

112

  mm (Yb - Ycgs)
           
  Preliminary estimate of jacking = force:      
           
  Jacking force factor (Jf)

=3D

0.75

 
  Ultimate strand breaking force (Pult)

=3D

250

  kN 
  Initial jacking force (Pj =3D = Nbbars*Pult*Jf)

=3D

  6750

  kN