CFVR5225 - Time-dependent losses.Coupled calculation method (EC2)

The model is a prestressed beam with a length of 16 cm.
The beam is made of C40/50 concrete and the tendons are made of Y1960S3 steel.
The section is rectangular 1 x 0.8, with reinforcement of s500 steel.
The aim of the example is to verify the calculation of prestressing losses for active tendons.

Element types used in the model: BEAM44

Needed CivilFEM Modules:
Geotechnical Module
Bridges and Civil Non Linearities Module
Advanced Prestressed Concrete Module

The example can be launched on an educational license.

KEYWORDS

Beam

Tendon

Cross Section

Prestressed Concrete

Model Statistics
Number of elements	10
Number of nodes	11
Number of civil materials	3
Number of cross sections	1
Number of shell vertices	0

Log file: CFVR5225.DAT

  FINISH
  ~CFCLEAR,,1
  ~CFACTIV,NLBR,Y
  ~CFACTIV,PRSC,Y
  NomFile='CFVR5225'
  /TITLE, %NomFile%, Time-dependent losses. Coupled calculation method (EC2)

! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! Parameters
  DEPTH = 1.0
  WIDTH = 0.8
  L = 16
! Setup
  ~CODESEL,EC3-92,EC2-91,EC2-91,,EC8-94
  ~UNITS,SI

  /PREP7
! Materials
  ~CFMP,1,LIB,CONCRETE,EC2,C40/50
  ~CFMP,2,LIB,REINF,EC2,S500
  ~CFMP,3,LIB,PREST,EHE,Y1960S3
! Model definition
  DEPTH = 1.0
  WIDTH = 0.8
  ~CSECDMS,1,REC,1,DEPTH,WIDTH
  ~BMSHPRO,1,BEAM,1,1,,,4,1,0,,Beam 1
  ET,1,BEAM4
! Nodes
  N, 1,0,0
  N,11,L,0
  FILL
! Elements
  TYPE,1
  REAL,1
  MAT,1
  E,1,2
  EGEN,10,1,-1
! Capture support beam.
  ~SBBMDEF,1
! Elevation points
  ~PCEPDEF,1,1,0,0
  ~PCEPDEF,2,11,0,0
! Plan points
  ~PCPPDEF,1,1,0,0
  ~PCPPDEF,2,11,0,0
! Tendons
  ~PCTNDEF,1,3,1e-002,0.15,,,
  ~PCTNMDF,1,EADD,1.
  ~PCTNMDF,1,EADD,2.
  ~PCTNMDF,1,PADD,1.
  ~PCTNMDF,1,PADD,2.
  ~PCTNMDF,1,METHOD,1
! Stress losses calculation
  ~PCLOSS,500500,1,EC2,0.8

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp    = 9
  NComp_ch = 0

! Marix dim.
  *DIM,LABEL,CHAR,Ncomp,1
  *DIM,LABEL_CH,CHAR,Ncomp_ch,1
  *DIM,VALUE,,Ncomp,3
  *DIM,VALUE_CH,CHAR,Ncomp_ch,3
  *DIM,TOLER,,Ncomp,2

! Labels
!--------------------------------------------------------------------------------------
  LABEL( 1)  = 'C01_SHR'
  LABEL( 2)  = 'C01_CRE'
  LABEL( 3)  = 'C01_RLX'
  LABEL( 4)  = 'C06_SHR'
  LABEL( 5)  = 'C06_CRE'
  LABEL( 6)  = 'C06_RLX'
  LABEL( 7)  = 'C11_SHR'
  LABEL( 8)  = 'C11_CRE'
  LABEL( 9)  = 'C11_RLX'

! Correct data, obtained data
!--------------------------------------------------------------------------------------
  VALUE( 1,1) =  7.600E7   /1.17885  $  ~CFGET,value( 1,2),PRSCONC,,TENDON,LOSS,,1, 1,4
  VALUE( 2,1) =  5.503E7   /1.17885  $  ~CFGET,value( 2,2),PRSCONC,,TENDON,LOSS,,1, 1,5
  VALUE( 3,1) =  0.330217E8/1.17885  $  ~CFGET,value( 3,2),PRSCONC,,TENDON,LOSS,,1, 1,6
  VALUE( 4,1) =  7.600E7   /1.17885  $  ~CFGET,value( 4,2),PRSCONC,,TENDON,LOSS,,1, 6,4
  VALUE( 5,1) =  5.503E7   /1.17885  $  ~CFGET,value( 5,2),PRSCONC,,TENDON,LOSS,,1, 6,5
  VALUE( 6,1) =  52960315.5/1.17885  $  ~CFGET,value( 6,2),PRSCONC,,TENDON,LOSS,,1, 6,6
  VALUE( 7,1) =  7.600E7   /1.17885  $  ~CFGET,value( 7,2),PRSCONC,,TENDON,LOSS,,1,11,4
  VALUE( 8,1) =  5.503E7   /1.17885  $  ~CFGET,value( 8,2),PRSCONC,,TENDON,LOSS,,1,11,5
  VALUE( 9,1) =  0.485819E8/1.17885  $  ~CFGET,value( 9,2),PRSCONC,,TENDON,LOSS,,1,11,6

! Warning and error tolerances
  *DO,II,1,NComp
    TOLER(II,1)  = 1E6
    TOLER(II,2)  = 1E6
  *ENDDO

!--------------------------------------------------------------------------------------
! Result comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC

Results

Label	Target	CivilFEM	Ratio	Tolerance
C01_SHR	6.447e+007	6.4249e+007	1.003	1e+006
C01_CRE	4.6681e+007	4.6523e+007	1.003	1e+006
C01_RLX	2.8012e+007	2.7755e+007	1.009	1e+006
C06_SHR	6.447e+007	6.4249e+007	1.003	1e+006
C06_CRE	4.6681e+007	4.6523e+007	1.003	1e+006
C06_RLX	4.4925e+007	4.4604e+007	1.007	1e+006
C11_SHR	6.447e+007	6.4249e+007	1.003	1e+006
C11_CRE	4.6681e+007	4.6523e+007	1.003	1e+006
C11_RLX	4.1211e+007	4.107e+007	1.003	1e+006

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CFVR5225 - Time-dependent losses.Coupled calculation method (EC2)

Results