Filter
Top Products
STAAD Commands and Input Instructions
Section 5
5-148
Notes
1) Users are urged to refer to Section 5.38 for information on
specification of SUPPORTS along with the CHANGE
command specifications.
2)
Spring constants must be provided in the current units.
3)
All spring DOF must be entered after the last non-spring DOF
is specified, if both are on the same line.
4)
If there are two entries for the same joint, then:
a)
any direction that is pinned/fixed on either will be fixed in
that direction.
b)
any direction released on one and is a spring on the other
will use the spring.
c)
Any direction that is pinned/fixed on one and a spring on
the other will use the spring.
d)
Any direction that is a spring on 2 or more entries will
have the spring constants added.
Description of Enforced
Enforced Support defines which translational and rotational
directions, at a joint, may have a support displacement imposed.
The support displacements are defined for each load case in
section 5.32.8. If no support displacement is entered, then zero
displacement will be imposed, as if that direction was FIXED. The
enforced displacement directions will be fixed for dynamic load
cases.
If there are two entries for the same joint, then any direction that is
enforced on either will be enforced in that direction, overriding
any other support specification for that joint-direction.
Example for support generation
SUPPORTS
3 TO 7 GENERATE PIN