TYPICAL
ANCHOR
4
GROUND SURFACE
st on?
MOMENCLATURE :
Ws WEIGHT OF ANCHOR
ASSUMPTIONS:
() SURFACE OF RUPTURE 19 A PLANE,
F* TENSION (N ANCHOR CABLE
(2) FRICTIONAL RESISTANCE ON ALL SIDES
Of THE ANCHOR EXCEPT THE FACE iS
NEGLIGIBLE.
Ps PASSIVE THRUST ON FACE OF ANCHOR
We HORIZONTAL COMPONENT OF P
¥2
KERTICAL
() THE ANCHOR /S OF GREAT LENGTH
PERPENDICULAR TO THE OIPECTION
COMPINEVT OF P
OF CHaBLE PULL.
= ANGLE DF FAIETION, SO/L ON CONCRETE
BASIC DATA:
ANGLE OF INTERNAL FRICTION, $ + 30°
ANGLE OF CONCRETE FRICTION, © = 20°
SUBMERGED DENSITY OF SOIL *S4 LES/CU FT
9S
7
RESISTANCE
FORCES ON FACE OF ANCHOR IN LES/FT OF ANCHOR WIOTH
£000
€000
6000
9200
10000
12000
4300
MID
\\
/
N
HORIZONTAL COMPONENT OF
a
\
PASSIVE RESISTANCE (PF)
&
oo!
|
“7
DEPTH (0) OF ANCHOR IM FEET
(TOP OF ANCWOR ASSUMEO AT GROUND SURFACE)
PASSIVE
VERTICAL COMPONENT
CUPLIFT) OF PASSIVE
RESISTANCE (EP
8
|
|
DESIGN NOTES:
THE LINE OF ACTION OF FT”peuee NOT L18 ABOVE
THE INTERSECTION OF 2 AND WW FOR CONSERVATIVE DESIGN, Wo WeST EQUAL THE vy ETICAL
COMPONENT OF CT” PLUS
THE VERTICAL
COMPONENT
OF
FIGURE 5.9-4
5-80
ANALYSIS
OF
CABLE
ANCHOR
180GP