CFVR0930 - Shell shear reinforcement design according to ACI-318

Shell shear reinforcement design according to ACI-318.

The model is made up of two square shell elements of 1.0m x 1.0m. Boundary conditions: + Node located at origin has its vertical movement restrained(perpendicular to the shells). + Node located at X=0 and Y=100 cm are completely restrained. + Node located at X=100 and Y=100 cm has its vertical movement restrained(perpendicular to the shells). Applied loads: + Pressure of 3 kg/cm² on one of the elements. + Punctual tension force of 50 kp (X=200,Y=0). + Punctual compression force of 100 kp (X=200,Y=100).
There is no shear reinforcement in the slab. The reinforcement design code is the ACI 318.

Element types used in the model: SHELL43

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

Shell

Shell Vertex

Reinforced Concrete

ACI 318

Model Statistics
Number of elements	2
Number of nodes	6
Number of civil materials	2
Number of cross sections	0
Number of shell vertices	1

Log file: CFVR0930.DAT

   FINISH
  ~cfclear,,1
   NomFile='CFVR0930'
  /TITLE, %NomFile%, Shell shear reinforcement design according to ACI 318
! ---------------------------------------------------------------------------------
! Model definition and solve
! ---------------------------------------------------------------------------------

! Setup
 ~UNITS,,MONE,EURO
 ~UNITS,,LENG,CM
 ~UNITS,,TIME,S
 ~UNITS,,FORC,KP
 ~CODESEL,,ACI
 ~CFCONFG,PLRES   ,SHELL   ,EPSW 
 ~CFCONFG,RESULT,CFSHF,1

  /PREP7
! Materials
  ~CFMP,5,LIB,CONCRETE,EC2,C40/50
  ~CFMP,2,LIB,REINF,EC2,S400
! Element types
  ET,2,SHELL43
! Shell Vertex
  t=25     ! Thickness
  r=4      ! Cover
  th = 0   ! Reinforcement angle
 ~SHLRNF,1,t,5,2,r,0.0,0.0,0.0,0.0,0,th,45
 ~SHLSHR,1,2,,12,,,14,14
! Beam & Shell property
 ~BMSHPRO,10,SHELL,1,1,1,1,43,,,,Shell property

! Nodes
  N,10,0,0
  N,20,100,0
  N,30,200,0
  N,40,0,100
  N,50,100,100
  N,60,200,100
! Elements
  MAT,5
  REAL,10
  TYPE,2
  EN,100, 10, 20, 50, 40
  EN,200, 20, 30, 60, 50
! Boundary conditions
  D,10,UZ,0.0
  D,40,ALL,
  D,50,UZ,
! Solve
  /SOLU
  SFE,100,2,PRES,,3.0
  F,30,FY,50
  F,60,FX,-100
  SOLVE

  /POST1
! ---------------------------------------------------------------------------------
! Check with CivilFEM
! ---------------------------------------------------------------------------------
 ~CFSET,,1
 ~DIMCON,SHELL,SHEAR
 ~CFSET,1
 
!--------------------------------------------------------------------------------------
! DATA CHECK
!--------------------------------------------------------------------------------------
! Data comparison number
  NComp = 7
  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) = 'VC_X'
  LABEL( 2,1) = 'VS_X'
  LABEL( 3,1) = 'ASSH_X'
  LABEL( 4,1) = 'VC_Y'
  LABEL( 5,1) = 'VS_Y'
  LABEL( 6,1) = 'ASSH_Y'
  LABEL( 7,1) = 'ASSH'

! Correct values
  VALUE( 1,1)=225.4
  VALUE( 2,1)=131.02
  VALUE( 3,1)=1.53E-03
  VALUE( 4,1)=225.71
  VALUE( 5,1)=0.0
  VALUE( 6,1)=0.0
  VALUE( 7,1)=1.53E-03

! Comparison
 ESEL,S,ELEM,,100
 ~PLSHCON,VC_X 
 *GET,VALUE(1,2),NODE,10,EPSW
~PLSHCON,VS_X 
 *GET,VALUE(2,2),NODE,10,EPSW
~PLSHCON,ASSH_X  
 *GET,VALUE(3,2),NODE,10,EPSW
~PLSHCON,VC_Y
 *GET,VALUE(4,2),NODE,10,EPSW
~PLSHCON,VS_Y  
 *GET,VALUE(5,2),NODE,10,EPSW
~PLSHCON,ASSH_Y  
 *GET,VALUE(6,2),NODE,10,EPSW
~PLSHCON,ASSH 
 *GET,VALUE(7,2),NODE,10,EPSW

! Warning and error tolerances
  TOLER( 1,1)= 1E0     $ TOLER( 1,2)= 1E0
  TOLER( 2,1)= 1E0     $ TOLER( 2,2)= 1E0
  TOLER( 3,1)= 1E-03   $ TOLER( 3,2)= 1E-03
  TOLER( 4,1)= 1E0     $ TOLER( 4,2)= 1E0
  TOLER( 5,1)= 1E0	   $ TOLER( 5,2)= 1E0
  TOLER( 6,1)= 1E-03   $ TOLER( 6,2)= 1E-03
  TOLER( 7,1)= 1E-03   $ TOLER( 7,2)= 1E-03


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

Results

Label	Target	CivilFEM	Ratio	Tolerance
VC_X	225.4	225.08	1.001	1
VS_X	131.02	131.33	0.998	1
ASSH_X	0.00153	0.0015332	0.998	0.001
VC_Y	225.71	225.79	1.000	1
VS_Y	0	0	0.000	1
ASSH_Y	0	0	0.000	0.001
ASSH	0.00153	0.0015332	0.998	0.001

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CFVR0930 - Shell shear reinforcement design according to ACI-318

Shell shear reinforcement design according to ACI-318.

Results