国外砌石挡墙计算表格MasonryRetainingWall
PROJECT : PAGE : CLIENT : DESIGN BY : JOB NO. :
DATE :
REVIEW BY :
INPUT DATA & DESIGN SUMMARY
SPECIAL INSPECTION ( 0=NO, 1=YES )1Yes TYPE OF MASONRY ( 1=CMU, 2=BRICK )
1CMU MASONRY STRENGTH f m '= 1.5ksi CONCRETE STRENGTH f c '= 4.5ksi REBAR YIELD STRESS f y =60ksi
LATERAL SOIL PRESSURE P a =30pcf (equivalent fluid pressure)PASSIVE PRESSURE
P p =400psf / ft BACKFILL SPECIFIC WEIGHT
g b =110pcf SURCHARGE WEIGHT w s =100psf SERVICE LATERAL FORCE w Lat =20psf FRICTION COEFFICIENT m =0.3ALLOW SOIL PRESSURE Q a =3ksf THICKNESS OF TOP STEM t t =8in THICKNESS OF KEY & STEM t b =12in TOE WIDTH L T =3ft HEEL WIDTH
L H =6ft HEIGHT OF FENCE STEM H F =4ft HEIGHT OF TOP STEM H T =4ft HEIGHT OF BOT. STEM H B =4ft FOOTING THICKNESS h f =12in KEY DEPTH
h k =12in [THE WALL DESIGN IS ADEQUATE.]
SOIL OVER TOE
h p
=
12
in
TOP STEM REINF. (A s,1)
#7@
16in o.c.A s,1 LOCATION (0=at soil face, 1=at middle, 2=at each face)0at soil face BOT. STEM REINF. (A s,2)
#7@
16in o.c.A s,2 LOCATION (0=at soil face, 1=at middle, 2=at each face)0at soil face GROUTED CORES (0=fully, 1=at vertical rebars only)0
solid TOP REINF.OF FOOTING (A s,3)#6@18in o.c.BOT. REINF.OF FOOTING (A s,4)
#
5
@
14
in o.c.
ANALYSIS
SERVICE LOADS
H b = 0.5 P a (H T + H B + h f )2
=
1.22kips H s = w s P a (H T + H B + h f ) / g b =0.25kips H p = 0.5 P p (h p + h f + h k )2= 1.80kips H Lat = w Lat (H F + H T + H B - h p )
=0.22kips W s = w s (L H + t b - t t )
=0.63kips W b = [H T (L H + t b - t t ) + H B L H ] g b = 5.43kips W f = h f (L H + t b + L T ) g c = 1.50kips W k = h k t b g c
=0.15kips W w,t = t t (H T +H F ) g m =0.59kips W w,b = t b H B g m
=
0.44
kips
FACTORED LOADS
g H b = 1.6 H b = 1.94kips g H s = 1.6 H s =0.39kips g H Lat = 1.6 H Lat =0.35kips g W s = 1.6 W s = 1.01kips OVERTURNING MOMENT
g W b = 1.2 W b = 6.51kips H g H y H y g W f = 1.2 W f = 1.80kips H b 1.22 1.94 3.00 3.65g W k = 1.2 W k =0.18kips H s 0.250.39 4.50 1.10g W w,t = 1.2 W w,t =0.70kips H Lat
0.220.357.50
1.65g W w,b = 1.2 W w,b
=
0.53kips
S
1.68
2.69
6.40
RESISTING MOMENT
W
x W x g W x W s 0.63 6.83 4.33 6.92W b 5.43 6.9137.5245.03M HP =
0.53
ft-kips/ft
W f 1.50 5.007.509.00W k 0.15 3.500.530.63OVERTURNING FACTOR OF SAFETY W w,t 0.59 3.33 1.95 2.35W w,b
0.44
3.50
1.54
1.85
8.42> 1.5
g W Retaining / Fence Wall Design Based on ACI 530-05 & ACI 318-05
1.016.511.80g H y
0.53
5.832.6410.24
1.770.180.70HP
Wx M SF Hy
S +=
=
S