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STAAD Commands and Input Instructions
Section 5
5-150
5.27.2 Inclined Support Specification
Purpose
These commands may be used to specify supports that are inclined
with respect to the global axes.
General Format:
SUP
PORT
⎧ f
1
f
2
f
3
⎫ ⎧PINNED ⎫
joint-list INC
lined ⎨ ⎬ ⎨ ⎬
⎪REF f
4
f
5
f
6
⎪ ⎪
FIXED (BUT release-spec[spring-spec.])
⎪
⎩REFJT
f
7
⎭ ⎩
ENFORCED (BUT release-spec)
⎭
where f
1
, f
2
, f
3
are x, y, z global distances from the joint to the
“reference point"; or
where f
4
, f
5
, f
6
are x, y, z global coordinates of the “reference
point"; or
where f
7
is a joint number whose x, y, z global coordinates is the
“reference point".
A vector from the joint location to the reference point location
serves to define a local coordinate system (same as member with
BETA=0). The inclined support directions are in this local
"Inclined Support Axis System" (see more below).
See
Section 1.14
Note the release-spec and spring-spec are the same as in the
previous section (5.27.1). However, FX through MZ and KFX
through KMZ refer to forces/moments and spring constants in the
"Inclined Support Axis System" (see below).