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7/18/2019 Daya Dukung Data Lapangan
http://slidepdf.com/reader/full/daya-dukung-data-lapangan 1/29
DAYA DUKUNG PONDASI TIANG
DATA LAPANGAN (SONDIR
DAN SPT)
7/18/2019 Daya Dukung Data Lapangan
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Daya Dukung Ujung untuk Tanah Pasiran
Tiang Pancang :
Qp = 40 x N SPT x Ap (ton)Dimana,N–SPT = (N!N")#" N= $a%ga %ata&%ata N 'a%i 'aa% * 0&D *
N"= $a%ga %ata&%ata N 'a%i 'aa% * 4&D *+
DATA SPT
7/18/2019 Daya Dukung Data Lapangan
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Nilai N – SPT Desain
adalah:
Ndesain = ½ (N1 +N2)
N!" N – SPT UNTU# D$S%N T"&"N"N U'UN% P"D" T"N"& P"S"N φ :
D
(4 x D)dirata-rata untukdesain tahanan ujung = N2
(10 x D)dirata-rata untukdesain tahanan u un = N1
Ground Surface
Tian ancan
7/18/2019 Daya Dukung Data Lapangan
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Daya Dukung Ujung untuk Tanah PasiranTi ng )*r
=7 N (t/m2)
=400 (t/m2)
qp = 7 N (t/m2) < 400 (t/m2)
7/18/2019 Daya Dukung Data Lapangan
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Tahanan %eser Seliut Tiang dari Tanah er,asir
-enurut Na.al $ngineering /a0ilities *and:
- Tiang Pancang :Q = 0-" x (N SPT) x Li x p (ton)
"- Tiang .o% :Q = 0- x (N SPT) x Li x p (ton)
7/18/2019 Daya Dukung Data Lapangan
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Tahanan %eser Seliut Tiang *r ,ada Tanah er,asir
Ro/iani, Dncan an' .a%*% (11)
= 0.11 N (t/m2)
= 0.28 N (t/m2)
(=27.5 t/m2)
=0.32 N (t/m2) N < 53
Z=depth below ground surface
0.20 N
7/18/2019 Daya Dukung Data Lapangan
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Da2a Dng Tiang +*%'aa%an Ni3aiSPT
• nit ta$anan /ng:5* (N#m") = 40 Nco% (L#D) 6 400 Nco%
(tiang pancang pa'a pai%)
• nit ta$anan g** *3imt:5 (ton#m") = 0-" N 6 0 ton#m"
5 (N#m") = " N 6 00 N#m"
• Dapat /ga '*ngan o%*3ai N&SPT '*ngan7 ++:
7/18/2019 Daya Dukung Data Lapangan
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.*+*%apa o%*3ai N&SPT '*ngan 7
• Li$at 8ana3 9not
• 7 = (" N)0-; ! ; (8i2a$ita)
• 7 = (" N)0-; ! "0 (P*c)
•
7 = (" N)0-;
! "; (Dn$am)• 7 = ("0 N)0-; ! ; (Po3o < Dai, >i$i'a)
• 7 = (; N)0-; ! ; (S$ioi < ?i)
• 7 = ("0 N)0-; ! ; (@apan** Nationa3 Rai3a2)
7/18/2019 Daya Dukung Data Lapangan
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Relationship between Cohesion and N-Value (Cohesive soil)
2/3 N
7/18/2019 Daya Dukung Data Lapangan
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Relationship between n!le o" #nte$nal %$i&tion and N-Value('and 'oil)
7/18/2019 Daya Dukung Data Lapangan
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Vande$ Veens (*+,7) ethod "o$ .ilesin Cohesionless 'oils (daa duun! uun!)
5p= %ata&%ata ta$anan
on 'i *'a3aman D 'iata /ng tiang 'an D'i+aa$?S = "-;
7/18/2019 Daya Dukung Data Lapangan
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T$* in %iction on t$* pi3* $at in co$*ion3* oi3(8*2*%$o%, 1;B)
'ip3ac*m*nt pi3*
C&*ction pi3*
5c =%ata&%ata ta$anan on 'a3am g#cm" *pan/ang tiang3timit* in %iction, fs, mempunyai harga maximum 0Pant C&*ction,a maximm o ;4 Pa (ca3c3at*' on a33ac*o Eang* an' *+)
7/18/2019 Daya Dukung Data Lapangan
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'&hme$tmanns ethod "o$Cohesionless and Cohesive 'oils
oint 1ea$in! Capa&it Qb in All Types of Soil Sc$m*%tmann (1F)
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7/18/2019 Daya Dukung Data Lapangan
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7/18/2019 Daya Dukung Data Lapangan
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7/18/2019 Daya Dukung Data Lapangan
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DATA
7/18/2019 Daya Dukung Data Lapangan
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Da2a Dng Tiang +*%'aa%an PT
• nit ta$anan /ng 5*
• 5* = 0-; (5c ! 5c")
'imana: 5c = ni3ai 5c %ata&%ata pa'a /a%a L!0-. ampai L!4. 'i+aa$/ng tiang, 5c" = ni3ai 5c %ata&%ata
pa'a /a%a L ampai L&0-F. 'iata/ng tiang
DATASONDIR
7/18/2019 Daya Dukung Data Lapangan
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Da2a Dng Tiang .*%'aa%anPT
• nit ta$anan /ng 5*
5* = 0-; (5c ! 5c")
'imana:5c = ni3ai 5c %ata&%ata
pa'a /a%a L!0-.ampai L!4. 'i
+aa$ /ng tiang,
5c" = ni3ai 5c %ata&%atapa'a /a%a L
ampai L&0-F. 'iata/ng tiang
7/18/2019 Daya Dukung Data Lapangan
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Da2a Dng Tiang .*%'aa%anPT
• nit ta$anan g** tiang
7/18/2019 Daya Dukung Data Lapangan
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"4
Ana3ii Da2a Dng +*%'aa% 'ata Son'i% (PT)(INDON9SIA)
• .*+an S*m*nta%a
• .*+an Stati T*tap
• .*+an Dinami
5
.
2
. f O p AQa +=
5
.
3
. f O p AQa +=
8
.
5
. f O p AQa +=
7/18/2019 Daya Dukung Data Lapangan
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.ataan&+ataan ni3ai 5* 'an 5 (anta%a
3ain)
• Tiang pancang
& 5* 6 ;0 N5 tan φ (N#m") ata 5* (N#m") 6 400 Nco% (pai%)
- 5 (N#m") 6 00 (pai%)
- 5 (N#m") 6 0 (Tom3inon&pai%)
-5 (N#m
"
) 6 "0 (DNH&pai%) 'an 5 (N#m"
) 6 "00 (DNH&3*mpng)
- 5 (N#m") 6 0 (9not)
• Tiang +o%
- o'to +*%'aa%an p*n%nan ; Diam*t*%, 5*
(N#m") 6
"100 (pai%)
- 5* (N#m") 6 F0 (AS9&3*mpng)
- ON*i3, 5 (N#m") 6 10 (pai%)
- 5 (N#m") 6 "0 (DNH&pai%) 'an 5 (N#m") 6 "00 (DNH&
3*mpng)
- 5 (N#m") 6 0 (9not)-
" "
7/18/2019 Daya Dukung Data Lapangan
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Da2a Dng IJin
41
;
−=
=
+=
FS
FS QQ
QQQ
ult izin
seult
7/18/2019 Daya Dukung Data Lapangan
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?acto% o Sa*t2
• D*p*n' on man2 acto%, inc3'ing:
• – t2p* an' impo%tanc* o t$* t%ct%*
• – patia3 a%ia+i3it2 o t$* oi3
•
– t$o%og$n* o t$* +%ac* in*tigation• – t2p* an' nm+*% o oi3 t*t
• – aai3a+i3it2 o on&it* o% n*a%+2 33&ca3* 3oa'
• t*t
• – anticipat*' 3**3 o cont%ction monito%ing• – p%o+a+i3it2 o '*ign 3oa' +*ing *xc**'*'
• '%ing 3i* o t%ct%*
7/18/2019 Daya Dukung Data Lapangan
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3aiKcation o St%ct%* <
L**3 o ont%o3
• St%ct%*:
• – monm*nta3: '*ign 3i* 002*a%
• – p*%man*nt: '*ign 3i* "; 2% an'M 00 2%
• – t*mpo%a%2: '*ign 3i* M "; 2%
7/18/2019 Daya Dukung Data Lapangan
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?acto% o Sa*t2 o% D**p?on'ation o% Dona%' Loa'