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Pengalaman
Pekerjaan Geoteknik
Oleh: Ro’yu Awwalul MQS
Jenjang 7
DINDING PENAHAN TANAH
• PERUMAHAN VILLA CIHERANG INDAH
• Nilai Rp 832,933,068
• Penahan Jalan Utama
• Kubikasi 88,34 m3
Dinding gravitasi atau gravity wall terbuat dari beton bertulang
atau pasangan batu. Adakalanya diberikan tambahan tulangan
beton di permukaan dinding untuk mencegah terjadinya retak
pada permukaan akibat perubahan suhu
Dinding gravitasi (gravity wall)
DPT ini berbentuk huruf T yang terdiri dari kombinasi dinding
dengan beton bertulang. stabilitas bangunan DPT didapatkan
dari bobot sendiri DPT dan berat tanah diatas tumit tapak.
Struktur bangunan yang berfungsi sebagai penopang kantilever
pada DPT ini terdiri dari 3 bagian yaitu bagian dinding vertikal
(steem), tapak dan ujung kaki tapak (toe). Biasanya ketinggian
dinding ini tidak lebih dari 6- 7 meter
Dinding penahan tanah kantilever
(cantilever retaining wall)
Pengecekan terhadap guling dilakukan dengan menggunakan
persamaan: 𝑆𝐹 𝑂𝑣𝑒𝑟𝑡𝑢𝑟𝑛𝑖𝑛𝑔 = Σ𝑀.𝑅 Σ𝑀.𝑂 (4) dimana ΣMR
adalah jumlah momen yang menyebabkan turap mengalami
guling dengan titik tumpu putaran pada titik 0. Momen ini
dihasilkan dari tekanan tanah aktif yang bekerja pada
ketinggian H/3. ΣMO adalah jumlah momen yang mencegah
struktur turap terguling dengan titik pusat/ titik tumpu putaran
di titik 0. Momen ini disebabkan oleh gaya vertikal dari struktur
dan berat tanah di atas struktur.
Pengecekan stabilitas terhadap
guling (overturning)
Pengecekan stabilitas dinding penahan terhadap geser
ditentukan dengan persamaan sebagai berikut: 𝑆𝐹 𝑆𝑙𝑖𝑑𝑖𝑛𝑔 = Σ
𝑉 tan(𝑘.1 𝑥 𝜙) 𝑃𝑎 (5) dengan k adalah nilai koofisien gesek
sebesar 2/3
Pengecekan stabilitas dinding
terhadap geser (sliding)
Persamaan Terzhagi digunakan untuk menghitung kapasitas
daya dukung ultimit/ bearing capacity. DPT dimisalkan menjadi
pondasi memanjang. Tabel koofisien daya dukung tanah
metode Terzhagi disajikan pada Tabel 1
Pengecekan stabilitas daya dukung
(Bearing capacity).
PENGUKURAN
• Greenland forest hill Residence
• Nilai Rp. 45.000.000
• Pengukuran Batas
• Stake Out
• Leveling Kavling
PEKERJAAN JALAN TOL KUNCIRAN -SERPONG
• PEKERJAAN JALAN TOL KUNCIRAN -SERPONG
• Nilai Rp2,4 triliun
• Struktur Jalan
• Panjang 11,2 Km
SEKIAN DAN TERIMAKASIH

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Presentation Geoteknik (Ro'yu Awwalul MQS).pptx

  • 2. DINDING PENAHAN TANAH • PERUMAHAN VILLA CIHERANG INDAH • Nilai Rp 832,933,068 • Penahan Jalan Utama • Kubikasi 88,34 m3
  • 3.
  • 4. Dinding gravitasi atau gravity wall terbuat dari beton bertulang atau pasangan batu. Adakalanya diberikan tambahan tulangan beton di permukaan dinding untuk mencegah terjadinya retak pada permukaan akibat perubahan suhu Dinding gravitasi (gravity wall)
  • 5. DPT ini berbentuk huruf T yang terdiri dari kombinasi dinding dengan beton bertulang. stabilitas bangunan DPT didapatkan dari bobot sendiri DPT dan berat tanah diatas tumit tapak. Struktur bangunan yang berfungsi sebagai penopang kantilever pada DPT ini terdiri dari 3 bagian yaitu bagian dinding vertikal (steem), tapak dan ujung kaki tapak (toe). Biasanya ketinggian dinding ini tidak lebih dari 6- 7 meter Dinding penahan tanah kantilever (cantilever retaining wall)
  • 6. Pengecekan terhadap guling dilakukan dengan menggunakan persamaan: 𝑆𝐹 𝑂𝑣𝑒𝑟𝑡𝑢𝑟𝑛𝑖𝑛𝑔 = Σ𝑀.𝑅 Σ𝑀.𝑂 (4) dimana ΣMR adalah jumlah momen yang menyebabkan turap mengalami guling dengan titik tumpu putaran pada titik 0. Momen ini dihasilkan dari tekanan tanah aktif yang bekerja pada ketinggian H/3. ΣMO adalah jumlah momen yang mencegah struktur turap terguling dengan titik pusat/ titik tumpu putaran di titik 0. Momen ini disebabkan oleh gaya vertikal dari struktur dan berat tanah di atas struktur. Pengecekan stabilitas terhadap guling (overturning)
  • 7. Pengecekan stabilitas dinding penahan terhadap geser ditentukan dengan persamaan sebagai berikut: 𝑆𝐹 𝑆𝑙𝑖𝑑𝑖𝑛𝑔 = Σ 𝑉 tan(𝑘.1 𝑥 𝜙) 𝑃𝑎 (5) dengan k adalah nilai koofisien gesek sebesar 2/3 Pengecekan stabilitas dinding terhadap geser (sliding)
  • 8. Persamaan Terzhagi digunakan untuk menghitung kapasitas daya dukung ultimit/ bearing capacity. DPT dimisalkan menjadi pondasi memanjang. Tabel koofisien daya dukung tanah metode Terzhagi disajikan pada Tabel 1 Pengecekan stabilitas daya dukung (Bearing capacity).
  • 9. PENGUKURAN • Greenland forest hill Residence • Nilai Rp. 45.000.000 • Pengukuran Batas • Stake Out • Leveling Kavling
  • 10.
  • 11. PEKERJAAN JALAN TOL KUNCIRAN -SERPONG • PEKERJAAN JALAN TOL KUNCIRAN -SERPONG • Nilai Rp2,4 triliun • Struktur Jalan • Panjang 11,2 Km
  • 12.