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IBRACON Structures and Materials Journal • 2012 • vol. 5 • nº 1
Steel fibre reinforced concrete pipes. Part 2: Numerical model to simulate the crushing test
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9. Nomenclature
A
:
Pipe spigot.
A
c
:
Concrete area.
A
s,i
:
Area of the
i
-th steel bar.
B
:
Pipe socket.
dA
c
:
Differential concrete area.
C
f
:
Fibre dosage.
D
i
:
Internal diameter of the pipe.
D
o
:
Outside diameter of the pipe.
E
cm
:
Average Young modulus of the concrete.
E
s
:
Young modulus of the steel.
F
:
Applied load on the pipe.
F
c
:
Proof load of the pipe.
F
cr
:
First cracking load of the pipe.
F
n
:
Minimum failure load (established) of the pipe.
F
max,pos
: Maximum post-failure load (simulated) of the pipe.
F
min,pos
: Minimum post-failure load (established) of the pipe.
F
u
:
Ultimate failure load of the pipe.
F
3mm
:
Post-failure load for a 3.0 mm vertical displacement of the
key (2
st
series of the tested pipes).