Istiary, Nabilah Rahmanita (2019) Analisa Daya Dukung Tiang Pancang yang Mengalami Pergeseran dan Penyebabnya pada Apartemen Puncak MERR Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Apartemen Puncak MERR merupakan struktur bangunan tinggi yang terdiri dari 2 tower, tower A dan tower B. Keduanya sama-sama terdiri dari 40 lantai. Lantai 1 sampai 7 berfungsi sebagai lahan parkir dan lobby, sedangkan lantai 8 sampai 40 berfungi sebagai hunian. Perencanaan struktur atas bangunan gedung ini menggunakan sistem Struktur Rangka Pemikul Momen, yakni berupa balok dan kolom yang terbuat dari struktur beton bertulang. Sedangkan untuk perencanaan bangunan bawah, apartemen ini menggunakan tiang pancang tipe spun pile sebagai pondasi
Pondasi adalah bagian dari struktur bawah bangunan yang dirancang agar mampu memikul beban rencana dari bangunan diatasnya dan menyalurkan beban-beban tersebut kedalam tanah. Pelaksanaan pondasi dalam seharusnya tidak menyebabkan terjadinya pergeseran koordinat tiang pancang rencana. Hal itu pula yang menjadi perhatian pada pembangunan Apartemen Puncak MERR.
Pelaksanaan pondasi Apartemen Puncak MERR Surabaya sebenarnya sudah sesuai rencana. Saat konstruksi bangunan bawah, yang lebih dahulu diselesaikan adalah pemancangan tiang spun pile pada tower A, kemudian dilanjutkan pada tower B. Pada saat spun pile tower A telah terpasang secara keseluruhan, tiang grup P100 tower A melakukan galian untuk konstruksi pilecap sedalam 4,15 meter, sedangkan tower B mulai pemancangan. Hanya saja saat konstruksi tiang spun pile di tower B, ternyata timbul pergeseran koordinat pemancangan tiang grup P100 di tower A.
Setelah dilakukan analisa terhadap penyebab pergeseran tiang pancang adalah kelebihan air pori pada saat pemancangan. Sedangkan menurut hasil analisa, 40 dari 100 tiang spunpile diameter 600 mm pada P100 Sektor 5 tidak dapat digunakan untuk memikul beban rencana. Hal ini diperkuat dengan hasil tes PIT dan cek kemiringan tiang yang dilakukan di lapangan. Sementara berdasarkan perhitungan daya dukung, 60 spunpile diameter 600 mm tersisa tidak dapat digunakan untuk memikul beban rencana. Sehingga diperlukan tambahan sebanyak 35 bor pile diameter 800 mm untuk memikul keseluruhan beban rencana.
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The Puncak MERR Apartment is a high rise building consisting of 2 towers, tower A and tower B. Both of them consist of 40 floors. Floors 1 to 7 function as a parking lots and lobbies, while the 8th to 40th function as residential areas. The upper structure of this building is designed as a Moment Resisting Frame System, which beams and columns made of reinforced concrete. As for the lower structure this apartment uses spun piles as a foundation.
Foundation is part of the lower structure of the building that is designed to be able to carry the designed load from above and channel it to the ground. The installing method of the deep foundation should not cause any shift of the designed pile coordinate. It was also a concern of the pile construction in Puncak MERR Apartment.
The installing method of spun piles at Puncak MERR is actually be done as planned. When constructing the lower structure, the first one to be completed is the installation of spun piles on tower A, then proceed to tower B. When tower A spun piles are installed as a whole, the P100 tower A pole excavates for pilecap construction as deep as 4,15 meters, while tower B begins erection. It's just that when the construction of the spun pile pole in tower B, it turns out that there is a shift in the coordinates of the P100 group pole installation in tower A.
After doing analysis, known that the cause of the shift of the pile is excess pore water pressure at the time of erection. Whereas according to the analysis result, 40 of 100 spun piles 600 mm diameters in P100 sector 5 cannot be used to carry the designed load. This is affirmed by the results of PIT test and pole slope checks carried out in the field. While based on the calculation of bearing capacity, the remaining 60 spun piles diameter of 600 mm cannot be used to carry all of the designed load. So an additional 35 bored pile diameter of 800 mm is needed to carry all designed load.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RtS 624.154 Ist a-1 2019 |
| Uncontrolled Keywords: | Bearing capacity, shifting foundation, strengthening foundation, spun pile |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA775 Foundations. T Technology > TA Engineering (General). Civil engineering (General) > TA780 Piles and pile-driving |
| Divisions: | Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis |
| Depositing User: | Nabilah Rahmanita Istiary |
| Date Deposited: | 10 Jul 2024 00:53 |
| Last Modified: | 10 Jul 2024 00:58 |
| URI: | http://repository.its.ac.id/id/eprint/66396 |
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