!*************************************************************************************!
! TITLE: CFVR4017 - Reinforced concrete design according to GB 50010 Chinese code
! SUBTITLE: Torsion desing.
!
! DESCRIPTION: A concrete cantilever beam with rectangular shape section and
! DESCRIPTION: shear & torsion reinforcement is subjected to a vertical load and
! DESCRIPTION: torsion moment at free end.
! DESCRIPTION:
! DESCRIPTION: Determine the area per unit length of torsional transverse reinforcement
! DESCRIPTION: and total area of torsional longitudinal reinforcement according to GB 50010.
! DESCRIPTION:
!
! ELEMENT TYPE: BEAM4
! MODULES:
! UNITS: User
! KEYWORD1: Beam
! KEYWORD2: Cross Section
! KEYWORD3: Code Checking/Design
! KEYWORD4: Reinforced Concrete
! KEYWORD5: GB 50010
!
!*************************************************************************************!
  FINISH
  ~CFCLEAR,,1
   NomFile='CFVR4017'
  /TITLE, %NomFile%, TORSION DESIGN ACCORDING TO GB50010
! -------------------------------------------------------------------------------------
! Initial data
! -------------------------------------------------------------------------------------
! CivilFEM SETUP
  ~UNITS,,LENG,M
  ~UNITS,,TIME,S
  ~UNITS,,FORC,KN
  ~CODESEL,,GB50010

! Preprocessor
  /PREP7

! Parameters
  L=1              ! Length in m
  b=.4             ! Cross-section width in m.
  h=.3             ! Depth in m.
  T=25.            ! Torsional moment in KN*m
  Q=4.7            ! Maximum concomitant design shear force in Mp

! Material Definition
 ~CFMP,1,LIB,CONCRETE,GB50010,C25
 ~CFMP,2,LIB,REINF,GB50010,HRB400
 ~CFMP,2,GB_S    ,GAMs    ,,1.10

! Element Type Definition
  ET,1,Beam4                            ! Element Type 1: 3D Beam

! Cross-section definition
 ~CSECDMS,1,REC,1,0.3,0.4

! Reinforcement definition
 ~RNFDEF,1,TORSION,2,1e-4, , , ,1e-4, ,

! Beam properties
  ~BMSHPRO,1,BEAM,1,1,,,4,0,0,,Beam property

! Model Construction
  N,1                                    ! Nodes input
  N,5,L
  FILL,1,5

  E,1,2                                  ! Elements input
  EGEN,4,1,1,1

  D,1, , , , , ,ALL                      ! Constraint conditions

/SOLU
  F,5,FY,-Q
  F,5,MX,T
  SOLVE               ! Calculation

/POST1
! Postprocessor
  ~CFSET,,1,1       ! First load step

! Torsion design according to GB50010
  ~DIMCON,SHT,TORSION

!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data Comparison number
  NComp = 3
  NComp_ch = 0

! Matrix 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(1,1) = 'TRD1'
  LABEL(2,1) = 'ASTT'
  LABEL(3,1) = 'ASLT'

! Correct values
  VALUE(1,1)=0.322E2
  VALUE(2,1)=0.564E-3
  VALUE(3,1)=0.732E-3

! Comparison
 ~PLLSCON,TRD1
 *GET,VALUE(1,2),ELEM,3,ETAB,CFETAB_J
 ~PLLSCON,ASTT
 *GET,VALUE(2,2),ELEM,3,ETAB,CFETAB_J
 ~PLLSCON,ASLT
 *GET,VALUE(3,2),ELEM,3,ETAB,CFETAB_J

! Warning and error tolerances
  TOLER( 1,1)= 1E-1 $ TOLER( 1,2)= 1E-1
  TOLER( 2,1)= 1E-5 $ TOLER( 2,2)= 1E-5
  TOLER( 3,1)= 1E-5 $ TOLER( 3,2)= 1E-5

!--------------------------------------------------------------------------------------
! Results comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC