Download - TS5a Groundsill Kebonagung
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Jembatan
Kebonagung
Degradasi Dasar Sungai
Gerusan Lokal
Upaya Pengamanan
Foto: Etik Iriani, Ikanadani, Noorfian, Binga (MPBA 2005)
Istiarto (2005, 2006, 2007), Studio Model (2006, 2007)
Naskah: IstiartoIstiarto 1 Jembatan Kebonagung
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Pulowatu
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016
038
045
Kalasan
Trowono
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Kemiri
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Jerukwudel
Baran
(Rongkop)
Bedoyo
Pecucak
Semuluh
Blimbing
Candirejo
Semin
WONOSARI
Gledag
Sambipitu
Gading
Temanggung
Panggang
Barongan
Singosaren
Piyungan
Janti
MlatiNgijon
Sedayu
Klangon
Samas
BANTUL
PalbapangPandak
Sp. Galur
Kara
ngnongko
Temon
Toyan
WATES
Sentolo
Tegalsari
Dekso
Kalibawang Klangon
Ngaglik
Tempel
Prambanan
Ke SURAKARTA
Kaliurang
Pakem
Ke MAGELANG
Samigaluh
Nanggulan /Kembang
Dayakan
Milir
Mk. Imogiri
Kretek
Parangtritis
Paliyan
Nglipar
Kr.Mojo
Pandanan
Bulu
Sumur Ngeposari
Duwet
Jepitu
Sadeng
Baron
Tepus
Ngobaran
013
037
001
002
039
013040
006
046
047
007
006
044
026
027005
004
008
004
041 009
010
042
Srandakan
050
050
014
012
012
014015
033
020
051
020
021
022
048
048
024
029
025
023
023
030
032
030
031
031
030
055
056054
053
053
052
035
034
034
003
Wediombo
Ngungap
SLEMAN
Ke P
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jo
Congot
037
028
043
036
05
009
010011
007
017
017
049
019
020
035
PlayenPandean
059
058
061
Bakulan
Waduk Sermo
062
Pengasih
Kab. Magelang
Prop. Jawa Tengah
Cangkringan
Sampakan
Patuk
Jl. Nasional
Jl. Propinsi
Dawung
YOGYAKARTA
060
PETA LOKASI
PROYEK PERENCANAAN TEKNIS JALAN DAN JEMBATAN
TAHUN ANGGARAN 2002
Perencanaan Jbt. Kb. Agung IIPerencanaan Jbt. Dodogan
Istiarto 2 Jembatan Kebonagung
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GroundsillEndapan
sedimen
K. Ngapak
K. Progo
Ke Godean
Ke Ngijon
Jembatan Kebonagung
Istiarto 3 Jembatan Kebonagung
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Istiarto 4 Jembatan Kebonagung
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Kerusakan groundsill pada 1997
patah 2 m
revetment rusak
Sisi kanan groundsill patah,
terjadi setelah kerusakan
groundsill pada 1997
penempatan tetrapod beton,
namun kurang berhasil.Istiarto 5 Jembatan Kebonagung
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Pandangan ke arah hulu Jembatan Kebonagung.
Istiarto 6 Jembatan Kebonagung
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Pandangan ke arah hilir Jembatan Kebonagung.
Istiarto 7 Jembatan Kebonagung
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Istiarto 8 Jembatan Kebonagung
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Pembuatan Revetment
Istiarto 9 Jembatan Kebonagung
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Bagian kiri groundsill yang keropos.
Istiarto 10 Jembatan Kebonagung
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Groundsill bagian kiri yang keropos.
Istiarto 11 Jembatan Kebonagung
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Penampang patahan groundsill yang keropos.
Istiarto 12 Jembatan Kebonagung
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Istiarto 13 Jembatan Kebonagung
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Tetrapod yang hanyut akibat banjir.
Istiarto 14 Jembatan Kebonagung
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Tetrapod yang digunakan saat ini.
Istiarto 15 Jembatan Kebonagung
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Istiarto 16 Jembatan Kebonagung
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Keadaan groundsill pada akhir musim kemarau 2006.
Istiarto 17 Jembatan Kebonagung
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Keadaan pilar dan fondasi jembatan
pada akhir musim kemarau 2006.Istiarto 18 Jembatan Kebonagung
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Jejak gerusan lokal
di sekitar fondasi jembatan
(September 2006).
Istiarto 19 Jembatan Kebonagung
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Jejak gerusan lokal
di sekitar fondasi jembatan
(Maret 2007).
Istiarto 20 Jembatan Kebonagung
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Jejak degradasi dasar
sungai di sekitar jembatan
(September 2006).
Istiarto 21 Jembatan Kebonagung
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Degradasi dasar sungai + Gerusan lokal di sekitar pilar
Istiarto 22 Jembatan Kebonagung
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Echosounding dasar sungai
di sekitar pilar/fondasi jembatan
(Oktober 2006).
Istiarto 23 Jembatan Kebonagung
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Istiarto 24 Jembatan Kebonagung
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Istiarto 25 Jembatan Kebonagung
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Keadaan groundsill pada musim hujan (awal 2007).
Istiarto 26 Jembatan Kebonagung
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15 Maret 2007
8 Oktober 2006
Istiarto 27 Jembatan Kebonagung
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Istiarto 28 Jembatan Kebonagung
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15 November 2007
Pengamanan pilar
jembatan dengan
pemasangan bronjong
di sekeliling fondasi /
pile-cap.
Bronjong ditujukan
untuk stabilisasi dasar
sungai.
Mercu bronjong sama
dengan elevasi dasar
sungai.Istiarto 29 Jembatan Kebonagung
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Istiarto 30 Jembatan Kebonagung