Civil Engineering Reference
In-Depth Information
L
IG
L
IG
L
IG
L
x
M
=−
q
jx
ix
M
=−
x
q
ix
ix
M
=
x
q
jx
ix
AE
L
AE
L
x
0
0 000
−
x
0
0
0
0
0
12
EI
L
6
EI
L
12
EI
L
6
EI
L
0
z
0
0
0
z
0
−
z
0
0
0
z
3
2
3
2
12
EI
L
6
EI
L
12
EI
L
6
EI
L
y
y
y
y
0
0
0
0
0
0
−
0
−
0
3
2
3
2
∆
∆
∆
P
P
P
ix
iy
iz
ix
ix
iy
iz
ix
IG
L
IG
L
0
0
0
x
0
0
0
0
0
−
x
0
0
6
EI
4
EI
L
6
EI
L
2
EI
L
y
y
y
y
0
0
−
0
0
0
0
0
0
q
q
q
M
M
M
L
2
2
6
EI
L
4
EI
L
6
EI
L
2
EI
L
iy
iz
jx
jy
jz
iy
iz
jx
jy
jz
0
z
0
0
0
z
0
−
z
0
0
0
z
2
2
=
∆
∆
∆
P
P
P
−
AE
L
AE
L
x
0
0 000
x
0
0
0
0
0
12
EI
L
6
EI
L
12
EI
L
6
EI
L
0
−
z
0
0
0
−
z
0
z
0
0
0
−
z
3
2
3
2
q
q
q
M
M
M
jx
jy
jz
jx
jy
jz
12
EI
L
6
EI
L
12
EI
L
6
EI
L
y
y
y
y
0
0
−
0
0
0
0
0
0
3
2
3
2
IG
L
IG
L
0
0
0
−
x
0
0
0
0
0
x
0
0
6
E
I
2
EI
L
6
EI
L
4
EI
L
y
y
y
y
0
0
−
0
0
0
0
0
0
L
2
2
6
EI
L
2
EI
L
6
EI
L
4
EI
L
0
z
0
0
0
z
0
−
z
0
0
0
z
2
2
(4.33)
4.13
gLObAL JOint StiffnESS
The solution of structures using the global joint stiffness method requires
that each component be in the same Cartesian coordinate system. The
main components of the system are the members, loads, and supports. The
main results desired from the solution are the joint deformations, member
forces, and support reactions. The global or joint system is the primary
way to organize all the components. The supports and some of the loads
will be expressed in this system directly. Some of the loads will have to
