Stiffness in calculation of code dependent deformations
When the calculation of code-dependent deformations has been run, it is possible to review the stiffnesses.
Available stiffness-values and other values that may appear in output tables
1D members
N = Normal force
My(z) = Bending moment around y(z) axis
Nr = Normal cracking force
Mry(z) = Bending cracking moment around y(z) axis
EIIy(z),s = Short-term bending stiffness for uncracked section around y(z) axis
EIIIy(z),s = Short-term bending stiffness for cracked section around y(z) axis
EIy(z),s = Short-term resultant bending stiffness around y(z) axis
EAIx,s = Short-term normal stiffness for uncracked section
EAIIx,s = Short-term normal stiffness for cracked section
EAx,s = Short-term resultant normal stiffness
EIIy(z),l = Long-term bending stiffness for uncracked section around y(z) axis
EIIIy(z),l = Long-term bending stiffness for cracked section around y(z) axis
EIy(z),l = Long-term resultant bending stiffness around y(z) axis
EAIx,l = Long-term normal stiffness for uncracked section
EAIIx,l = Long-term normal stiffness for cracked section
EAx,l = Long-term resultant normal stiffness
xr = Depth of compression zone for cracked section
As = Total area of reinforcement
Asc = Area of compression reinforcement for cracked section
Ast = Area of tension reinforcement for cracked section
Ir = Second moment of inertia for cracked section
Case_Area = Name of combination for which area of reinforcement was calculated
σsy(z) = Stress in tension reinforcement calculated for cracked section around y(z) axis
σsy(z) = Stress in tension reinforcement calculated for cracked section after created first crack around y(z) axis
ζy(z) = Distribution coefficient around y(z) axis
2D members - standard axes
nx(y) = Normal force in x(y) direction
mx(y) = Bending moment in x(y) direction
nrx(y) = Normal cracking force in x(y) direction
mrx(y) = Bending cracking moment in x(y) direction
EIIx(y),s = Short-term bending stiffness for uncracked section in x(y) direction
EIIIx(y),s = Short-term bending stiffness for cracked section in x(y) direction
EIx(y),s = Short-term resultant bending stiffness in x(y) direction
EAIx(y),s = Short-term normal stiffness for uncracked section in x(y) direction
EAIIx(y),s = Short-term normal stiffness for cracked section in x(y) direction
EAx(y),s = Short-term resultant normal stiffness in x(y) direction
EIIx(y),l = Long-term bending stiffness for uncracked section in x(y) direction
EIIIx(y),l = Long-term bending stiffness for cracked section in x(y) direction
EIx(y),l = Long-term resultant bending stiffness in x(y) direction
EAIx(y),l = Long-term normal stiffness for uncracked section in x(y) direction
EAIIx(y),l = Long-term normal stiffness for cracked section in x(y) direction
EAx(y),l = Long-term resultant normal stiffness in x(y) direction
xrx(y) = Depth of compression zone for cracked section in x(y) direction
Asx(y) = Total area of reinforcement in x(y) direction
Ascx(y) = Area of compression reinforcement for cracked section in x(y) direction
Astx(y) = Area of tension reinforcement for cracked section in x(y) direction
Irx(y) = Second moment of inertia for cracked section in x(y) direction
Case_Area = Name of combination for which area of reinforcement was calculated
σsx(y) = Stress in tension reinforcement calculated for cracked section in x(y) direction
σsr(y) = Stress in tension reinforcement calculated for cracked section after created first crack in x(y) direction
ζx(y) = Distribution coefficient in x(y) direction
2D members - principal axes
n1(2) = Normal force in 1(2) principal direction
m1(2) = Bending moment in 1(2) principal direction
nr1(2) = Normal cracking force in 1(2) principal direction
mr1(2) = Bending cracking moment in 1(2) principal direction
EII1(2),s = Short-term bending stiffness for uncracked section 1(2) principal direction
EIII1(2),s = Short-term bending stiffness for cracked section in 1(2) principal direction
EI1(2),s = Short-term resultant bending stiffness in 1(2) principal direction
EAI1(2),s = Short-term normal stiffness for uncracked section in 1(2) principal direction
EAII1(2),s = Short-term normal stiffness for cracked section in 1(2) principal direction
EA1(2),s = Short-term resultant normal stiffness in 1(2) principal direction
EII1(2),l = Long-term bending stiffness for uncracked section in 1(2) principal direction
EIII1(2),l = Long-term bending stiffness for cracked section in 1(2) principal direction
EI1(2),l = Long-term resultant bending stiffness in 1(2) principal direction
EAI1(2),l = Long-term normal stiffness for uncracked section in 1(2) principal direction
EAII1(2),l = Long-term normal stiffness for cracked section in 1(2) principal direction
EA1(2),l = Long-term resultant normal stiffness in 1(2) principal direction
xr1(2) = Depth of compression zone for cracked section in 1(2) principal direction
As1(2) = Total area of reinforcement in 1(2) principal direction
Asc1(2) = Area of compression reinforcement for cracked section in 1(2) principal direction
Ast1(2) = Area of tension reinforcement for cracked section in 1(2) principal direction
Ir1(2) = Second moment of inertia for cracked section in 1(2) principal direction
Case_Area = Name of combination for which area of reinforcement was calculated
σs1(2) = Stress in tension reinforcement calculated for cracked section in 1(2) principal direction
σsr(2) = Stress in tension reinforcement calculated for cracked section after created first crack in 1(2) principal direction
ζ1(2) = Distribution coefficient in 1(2) principal direction
α1(2) = The angle between x-axis of LCS and 1(2) principal direction
Procedure to display the stiffness
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Open service Concrete Advanced.
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Select function Member check - Check of non-prestressed concrete > Stiffness presentation (single click on the function is sufficient to invoke the function).
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Select the required load case, combination or class.
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Select members to be checked.
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Select the required quantity and if required, make other adjustments in the property window.
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Click Action button [Refresh] to see the selected design values.
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Repeat steps 3 to 7 as many times as required.
There are two functions Stiffness presentation in service Concrete Advanced: one in 1D member branch and the other in 2D member branch. Depending on the type of the member you want to check, select the function in the appropriate branch.