Skripsi PENGGUNAAN GROUND ANCHOR, SOLDIER PILE DAN COFFERDAM UNTUK PENGENDALIAN BANJIR AIR ROB KOTA SEMARANG

Pemerintah Kota Semarang sedang membangun tanggul di
Kali Tenggang dalam upaya penanganan menanggulangi banjir
air rob. Upaya yang dilakukan adalah untuk mengendalikan
luapan banjir air rob (pasang) agar mampu menahan luapan air
ketika banjir air rob (pasang) datang dan menahan agar tidak
terjadinya keruntuhan tanah yang berdampak pada bangunan
pemukiman warga setempat yang berada di pinggir Kali
Tenggang. Saat ini pihak Dinas PU (Pekerjaan Umum) Kota
Semarang, kurang puas dengan hasil perencanaan yang sudah
ada pada kondisi eksisting Kali Tenggang. Oleh karena itu,
diperlukan review design eksisting agar mengetahui hasil yang
sesuai dengan kondisi eksisting yang aman.
Pada penulisan Tugas Akhir ini dinding penahan tanah akan
dihitung kembali agar mengetahui angka keamanan dalam kondisi
eksisting. Sementara itu kondisi lapangan agak sulit dalam
pelaksanaan, dan keterbatasan biaya. Maka perhitungan ulang
kondisi eksisting dan penggunaan alternatif Ground Anchor,
Soldier Pile dan Cofferdam untuk perkuatan dinding penahan
tanah akan dilakukan agar mendapatkan hasil perkuatan yang
aman, ekonomis, dan effisien.
Dari hasil perhitungan analisis yang telah dilakukan
didapatkan kedalaman kondisi antara pemukiman-kali tenggang
sedalam 7,4 meter dan kedalaman kondisi antara tambak-kali
tenggang sedalam 5,6 meter. Hasil perencanaan pertama struktur dinding penahan tanah menggunakan Sheet Pile Beton dengan
capping beam 90x70 cm serta balok penahan 70x50 cm
menghabiskan dana Rp. 68.143.897.307, perencanaan kedua
struktur dinding penahan menggunakan kombinasi Sheet Pile
Beton dengan Ground Anchor sepanjang 1 meter menghabiskan
dana Rp. 77.905.021.907, perencanaan ketiga struktur dinding
penahan menggunakan soldier pile diameter 1 m dengan jumlah
tulangan yang dibutuhkan 28 D19 menghabiskan dana Rp.
54.619.166.966, dan perencanaan keempat struktur dinding
penahan tanah menggunakan kombinasi Sheet Pile Beton dengan
Cofferdam (Sheet Pile Baja) menghabiskan dana Rp.
99.515.328.317.

Semarang City Government was building the embankment at
the Time Lag in its efforts to cope with the flood of water handling
rob. Efforts are being made is to control a water flood overflow
rob (pairs) to hold the overflow of water when water floods rob
(pairs) come and arrest so as not to impact the occurrence of soil
collapse on the local residential buildings located on the edge of
Time Lag. Currently Department of PU (public works) the city of
Semarang, was less satisfied with the results of planning already
on the existing condition of the Time Lag. Therefore, the existing
design review is required in order to find out the results that
correspond to existing conditions.
On the writing of Thesis of this soil retaining walls will be
counted again in order to know the existing condition of security
in numbers. Meanwhile the condition of the pitch was a bit difficult
in implementation, and cost constraints. Then restart the existing
condition calculation and use of alternative Ground Anchor,
Soldier Pile Cofferdam for the retaining walls and the retaining
wall will be carried out in order to get the retaining a safe,
economical, and disappear.
From the results of the calculation of the analysis that has been
done by mobilising the depth conditions between the settlement
lag-times as deep as 7.4 meters and a depth of conditions between
the embankment-grace period time as deep as 5.6 meters. The
results of the first planning the structure of the retaining walls of soils using Sheet Pile concrete capping beam 90x70 cm and 70x50
cm in retaining beam spent the funds of Rp. 68,143,897,307,
planning a second structure retaining walls using a combination
of Sheet Pile Concrete with Ground Anchor along the 1 meter
spend the funds of Rp. 77,905,021,907, planning the third structure
retaining walls using soldier pile diameter 1 m with the amount of
reinforcement required 28 D19 spend the funds of Rp.
54,619,166,966, and Fourth planning structure of the retaining
walls of soils using a combination of Sheet Pile Cofferdam concrete
(Steel Sheet Pile) spend the funds of Rp. 99,515,328,317

Rp. 100.000

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