RETAINING WALL PLANNING SOIL CANTILEVER TYPE ON THE ROAD SOEKARNO – HATTA KM 48 SAMARINDA – BALIKPAPAN --Ed. 1

RETAINING WALL PLANNING SOIL CANTILEVER TYPE ON
THE ROAD SOEKARNO – HATTA KM 48 SAMARINDA –
BALIKPAPAN
Annarose
Mahasiswa, Jurusan Teknik Sipil, Politeknik Negeri Samarinda
Annarose_rivai@yahoo.com
Raudah Ahmad
Staff Pengajar, Jurusan Teknik Sipil, Politeknik Negeri Samarinda
raudahcoal@gmail.com
Joko Suryono
Staff Pengajar, Jurusan Teknik Sipil, Politeknik Negeri Samarinda
Jokosuryono55@gmail.com
INTISARI
Perencanaan dinding penahan tanah tipe kantilever di Jalan Soekarno –
Hatta KM 48 Samarinda - Balikpapan. Kondisi memiliki lereng yang terindikasi
terjadi longsor, longsoran ini menyebabkan amblasnya jalan utama. Perhitungan
dimensi, kontrol stabilitas, penulangan dinding penahan tanah sangat penting
dalam perencanaan dinding penahan tanah. Dari perhitungan kestabilan lereng
dapat nilai 3,2 > 1,5 yang menandakan lereng aman terhadap longsoran, tetapi
sebagai bentuk pencegahan maka dilakukan penanganan terhadap lereng tersebut
dengan dinding penahan tanah. Berdasarkan tinggi lereng mencapai 7 meter, maka
direncanakan dinding penahan tanah yang memiliki tinggi 7 meter dan lebar 4,9
meter. Pertama kontrol stabilitas terhadap geser dan guling, apabila salah satu
tidak memenuhi maka harus mendimensi ulang dinding penahan tanah. Nilai
kontrol stabilitas terhadap geser sebesar 3,1 dan guling sebesar 2,1. Kedua kontrol
stabilitas terhadap daya dukung dan kelongsoran, apabila salah satu tidak
memenuhi maka harus merencanakan pondasi dalam. Nilai kontrol stabilitas
terhadap daya dukung sebesar 3,41 karena nilai angka keamanan sudah memenuhi
keamanan yang disyaratkan, maka tidak perlu diberikan kekuatan tambahan
pondasi tiang pancang untuk menambah kapasitas dukung pondasi. Terakhir
dinding penahan tanah direncanakan penulangan secara detail.
Kata kunci : tanah lempung, longsor, dinding penahan tanah, stabilitas.
ABSTRACTINERSIA Vol. IX No.10,September 2019
ISSN: 1829-6025
Planning cantilever type retaining wall on Soekarno-Hatta Road KM 48
Samarinda - Balikpapan. The condition has slopes that indicated landslides, this
landslide caused the collapse of the main road. Dimension calculation, stability
control, reinforcement of the retaining wall are very important in planning the
retaining wall. From the calculation of the stability of the slope can be a value of
3.2 > 1.5 which indicates the slope is safe against avalanches, but as a form of
prevention, the slope is treated with a retaining wall. Based on the slope height
reaching 7 meters, then planned retaining wall which has a height of 7 meters and
a width of 4.9 meters. First the stability control of sliding and rolling, if one does
not meet it must re-dimension the retaining wall. The value of the stability control
of shear is 3.1 and bolster is 2.1. Second, stability control on carrying capacity
and landslide, if one does not meet, then it must plan the deep foundation. The
value of stability control to the carrying capacity is 3.41 because the value of the
security number has met the required security, so there is no need to be given
additional strength of the pile foundation to increase the bearing capacity of the
foundation. Finally the retaining wall is planned reinforcement in detail.
Keywords: clay, landslides, retaining walls, stability