...
Tendons
...
are
...
line
...
objects
...
which
...
may
...
be
...
embedded
...
within
...
other
...
objects
...
(
...
...
,
...
...
,
...
...
,
...
etc.)
...
to
...
simulate
...
the
...
effects
...
of
...
...
and
...
post-tensioning.
...
Tendons
...
may
...
be
...
modeled
...
either
...
as
...
independent
...
structural
...
objects
...
or
...
simply
...
as
...
equivalent
...
loads
...
which
...
act
...
upon
...
the
...
structure.
...
When
...
modeled
...
as
...
objects,
...
...
behavior
...
may
...
be
...
assigned
...
through
...
axial
...
...
,
...
and
...
losses
...
may
...
be
...
calculated,
...
including
...
those
...
from
...
elastic
...
shortening
...
and
...
time-dependent
...
effects
...
(
...
...
,
...
...
,
...
and
...
aging).
...
Tendons
...
extend
...
between
...
two
...
...
locations,
...
may
...
follow
...
a
...
curvilinear
...
or
...
segmented
...
path
...
within
...
3D
...
space,
...
and
...
do
...
not
...
need
...
to
...
be
...
entirely
...
contained
...
within
...
other
...
objects.
...
Tendons
...
have
...
axial,
...
shear,
...
bending,
...
and
...
torsional
...
stiffness
...
properties,
...
though
...
axial
...
is
...
of
...
primary
...
concern.
...
A
...
maximum
...
tension
...
(positive)
...
and
...
compression
...
(negative)
...
may
...
be
...
assigned
...
to
...
tendons.
...
No-compression
...
behavior
...
is
...
specified
...
by
...
setting
...
the
...
compression
...
limit
...
to
...
zero.
...
These
...
limits
...
only
...
apply
...
during
...
nonlinear
...
analysis.
...
...
...
may
...
also
...
be
...
applied
...
to
...
tendons.
...
Additional
...
information
...
on
...
tendons
...
and
...
their
...
application
...
is
...
available
...
in
...
the
...
CSI Analysis Reference Manual (The Tendon Object, page 279).
References
LAPBOX: Linear-Elastic Analysis of Box-Girder Bridges, NISEE Online Archive, University of California, Berkeley – the LAPBOX Manual explains calculation of tendon forces
Related Content
Articles
Child pages (Children Display) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tutorials
Filter by label (Content by label) | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Test Problems
Filter by label (Content by label) | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|