Perencanaan Ulang Timbunan Oprit Dan Abutment Jembatan Plasma Batu Tuguplasma Tanjung Kurung, Palembang (Yang Mengalami Keruntuhan Sebelumnya Pada Saat Pelaksanaan)

Ummah, Rif’ Atul (2016) Perencanaan Ulang Timbunan Oprit Dan Abutment Jembatan Plasma Batu Tuguplasma Tanjung Kurung, Palembang (Yang Mengalami Keruntuhan Sebelumnya Pada Saat Pelaksanaan). Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Abstrak—Terhambatnya produktivitas pengangkutan kelapa sawit dari Plasma Batu Tugu Desa Prambatan menuju Desa Tanjung Kurung akibat adanya sungai periodik yang meluap saat musim hujan, membuat PT. Golden Sumatera melaksanakan pembangunan jembatan dengan oprit yang tinggi. Namun pada pelaksanaannya terjadi kelongsoran yang menyebabkan abutment dan jembatan runtuh. Maka dari itu perlu adanya perencanaan ulang timbunan oprit dan abutment jembatan. Dalam perencanaan ini tanah asli membutuhkan waktu puluhan tahun untuk selesai konsolidasi hingga 90%. Maka dari itu, dibutuhkan bantuan vertical drain berupa PVD untuk mempercepat waktu konsolidasi. Berdasarkan hasil analisis, timbunan oprit jembatan dibagi menjadi dua zona yaitu zona 1 dengan tinggi timbunan 6 meter sepanjang 24 m dengan kemiringan 3% dan zona 2 dengan tinggi timbunan 5.3 meter sepanjang 1 km dengan kemiringan 0%. Timbunan oprit direncanakan menggunakan perkuatan arah melintang timbunan dan perkuatan arah memanjang timbunan di belakang abutment. Untuk perkuatan meilntang direncanakan dua alternatif yaitu alternatif 1 perkuatan timbunan miring dengan geotextile dan alternatif 2 perkuatan timbunan tegak dengan kombinasi multiblocks, geogrid, dan cerucuk. Untuk perkuatan arah v memanjang jalan digunakan geotextile wall dan cerucuk. Dari dua alternatif tersebut dipilih berdasarkan biaya material paling murah. Pondasi jembatan direncanakan menggunakan tiang pancang diameter 30 cm dan 40 cm. Dari masing-masing diameter tersebut dihitung biaya material yang paling sedikit, dan kemudian disimpulkan menjadi alternatif yang dipakai. Dari hasil analisis didapatkan untuk alternatif 1 diperoleh kebutuhan geotextile zona 1 dan zona 2 masing-masing sebanyak 49 lapis dan 34 lapis. Untuk perkuatan memanjang diperoleh kebutuhan geotextile wall sebanyak 19 lapis, serta dibutuhkan cerucuk sebanyak 4 buah/ m dengan panjang masing-masing 9 m. Pada Alternatif 2 didapatkan kebutuhan untuk zona 1 yaitu geogrid sebanyak 10 lapis panjang 6 m dan 36 lapis (2 sisi) panjang 1 m , multiblocks seluas 278,4 m2, geotextile sebanyak 5 lapis, dan cerucuk sebanyak 4 buah/ m (2 sisi) dengan panjang masing-masing 6 m. Sedangkan untuk zona 2 didapatkan kebutuhan geogrid sebanyak 8 lapis panjang 6 m dan 30 lapis (2 sisi) panjang 1 m, multiblocks seluas 9200 m2, geotextile sebanyak 3 lapis, dan cerucuk sebanyak 4 buah/m (2 sisi) panjang masingmasing 6 m. Untuk perkuatan memanjang jalan didapatkan geotextile wall sebanyak 17 lapis, serta dibtuhkan cerucuk sebanyak 3 buah/m panjang masing-masing 9 m. Dari kedua alternatif dipilih alternatif 1 yang menghasilkan biaya material paling murah. Pondasi abutment didapatkan diameter 40 cm jumlah 12 buah panjang 16,5 m menghasilkan biaya paling murah. ============================================================ Abstract—Productivity of palm oil transposrtation from Plasma Batu Tugu village to the village of Tanjung Kurung Prambatan hampered by the periodic overflowing of the river during the rainy season, making PT. Golden Sumatra construct high oprit bridge. However, landslide is occurred at implementation stage, causing the abutment and the bridge collapse. Thus, re-planning is needed for oprit embankment and bridge abutment. In this plan, the native soil take decades to complete consolidation of up to 90%. Therefore, PVD is used as a vertical drain to accelerate consolidation. Based on the analysis, oprit bridge embankment is divided into two zones, zone 1 implement 6 m height along 24 m embankment with 3% longitudinal slope and zone 2 implement 5.3 m height along 1 km embankment with 0% longitudinal slope. Oprit embankment is planned to use transverse reinforcement and longitudinal reinforcement behind the abutment. For transverse reinforcement is planned two alternatives, alternative 1 implement geotextile reinforcement for sloping embankment and alternative 2 implement combination of multiblocks, geogrid and micropile reinforcement for vertical embankment. For longitudinal reinforcement is used geotextile wall and micropile. Further, alternative choice consider the least expensive material cost. Bridge foundation pile is planned to use a vii diameter of 30 cm and 40 cm. Each of the diameter material costs are calculated and then the least material cost concluded to be an alternative that is implemented. Based on analysis for alternatives 1 is obtained zone 1 and zone 2 need 49 layers and 34 layers of geotextile respectively. For longitudinal reinforcement is needed 19 layers of geotextile wall, and is required 4 units / m with each length of 9 m of micropiles. In alternative 2, for zone 1 is needed geogrid as many as 10 layers with length of 6 m and 36 layers (double sides) with length of 1 m, multiblocks which cover an area of 278.4 m2, 5 layers of geotextile, and 4 units / m (double sides) with each length of 6 m of micropiles. For the zone 2 is needed geogrid as many as 8 layers with length of 6 m and 30 layers (double sides) length of 1 m, multiblocks which cover an area of 9200 m2, 3 layers of geotextile, and 4 units / m (double sided) with each length of 6 m of micropiles. For road longitudinal reinforcement, is obtained 17 layers of geotextile wall and is required 3 pieces / m with each length of 9 m of micropiles. Based on comparison of two alternative, is chosen alternative 1 that produces the most inexpensive material cost. Whereas, the abutment foundation is obtained a diameter of 40 cm, as many as 12 units, with each length of 16,5 m that produces most inexpensive cost.

Item Type: Thesis (Undergraduate)
Additional Information: RSS 624.151 363 Umm p
Uncontrolled Keywords: Plasma Batu Tugu-Tanjung Kurung, timbunan oprit, PVD, geotextile, multiblocks dan geogrid, cerucuk, geotextile wall, abutment dan pondasi abutment
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization
Divisions: Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 09 Dec 2019 05:41
Last Modified: 09 Dec 2019 05:41
URI: https://repository.its.ac.id/id/eprint/72299

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