Sari, Kumara Ulya (2023) Desain Alternatif Pondasi Bored Pile Menggunakan Metode Statis dan Plaxis 3D pada Jembatan Sine STA0+325 Proyek Pembangunan Jalur Lintas Selatan Lot 6A Pantai Sine-Batas Blitar 1. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penggunaan pondasi dalam bangunan merupakan hal yang sangat diperlukan guna menopang beban struktur diatasnya. Perencanaan pondasi suatu struktur bangunan harus mempertimbangkan beberapa hal diantaranya jenis pondasi, kondisi sekitar dan struktur tanah. Pondasi dalam jenis tiang bor (bored pile) menjadi pilihan pada Jembatan Sine proyek pembanguna Jalur Lintas Selatan Lot 6A Pantai Sine – Batas Blitar 1. Berdasarkan hasil pengujian ulang drilling, nilai SPT (Standard Penetration Test) tanah di lapangan lebih kecil dibandingkan dengan data borlog perencanaan. Dari permasalahan tersebut bagaimana perencanaan ulang daya dukung vertikal pondasi untuk mengetahui kekuatannya. Perencanaan ulang konfigurasi pondasi bored pile sebagai desain alternatif dari struktur bawah Jembatan Sine dengan cara perhitungan daya dukung maupun penurunan. Struktur atas Jembatan tersebut dihitung untuk memperoleh gaya reaksi pada dasar bangunan. Perhitungan daya dukung pondasi menggunakan metode statis yaitu Reese and O’Neill dan Finite Element Method (FEM) berupa Plaxis 3D. Hasil, pondasi boredpile direncanakan berdiameter D60cm, D80cm dan D100cm. Pada lima titik borhole didapatkan 15 type konfigurasi pondasi dengan kedalam BH-A1 50 m, BH-P1 50 m, BH-P2 56 m, BH-P3 56 m dan BH-A2 50 m. Kapasitas dukung tanah terkecil terdapat pada titik P1 dengan diameter pondasi 60 cm sebesar 229.90 ton di kedalaman 50 m. Sedangkan kapasitas dukung tanah terbesar terdapat pada titik P3 dengan diameter pondasi 100 cm sebesar 584.82 ton di kedalaman 56 m. Pemodelan dengan program komputer Plaxis 3D dimodelkan berdasarkan hasil perhitungan metode statis pada titik borehole. Untuk hasil analisa penurunan menggunakan metode statis dan Plaxis 3D didapatkan angka penurunan metode Plaxis 3D lebih kecil dari pada perhitungan metode statis yaitu dengan selisih rata-rata utnuk penurunan tiang tunggal 49% dan penurunan kelompok tinag 15%.
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The use of foundations in buildings is very necessary to support the load of the structure above it. Planning the foundation of a building structure must consider several things including the type of foundation, surrounding conditions and soil structure. Bored pile foundation is the choice for the Sine Bridge development project for the South Cross Route Lot 6A Sine Beach – Blitar 1 Border. Based on the results of repeated drilling tests, the SPT (Standard Penetration Test) value of the soil in the field is smaller than the drill log data. planning. The problem is how to redesign the vertical bearing capacity of the foundation to determine its strength. Redesign the bored pile foundation configuration as an alternative design of the lower structure of the Sine Bridge by calculating the carrying capacity and settlement. The superstructure of the bridge is calculated to obtain the reaction force at the base of the building. The calculation of the bearing capacity of the foundation uses the static method, namely Reese and O'Neill and the Finite Element Method (FEM) in the form of Plaxis 3D. As a result, boredpile foundations are planned with a diameter of D60cm, D80cm and D100cm. At the five borehole points, 15 types of foundation configurations were obtained with depths of BH-A1 50 m, BH-P1 50 m, BH-P2 56 m, BH-P3 56 m and BH-A2 50 m. The smallest soil bearing capacity is at point P1 with a foundation diameter of 60 cm of 229.90 tons at a depth of 50 m. While the largest soil bearing capacity is at point P3 with a foundation diameter of 100 cm of 584.82 tons at a depth of 56 m. Modeling with the Plaxis 3D computer program is modeled based on the results of static method calculations at borehole points. For the results of settlement analysis using the static method and Plaxis 3D, it was found that the settlement rate for the Plaxis 3D method was smaller than the calculation of the static method, with an average difference for a single pile settlement of 49% and a group settlement of 15%. Modeling (BIM) method results in a smaller duration of 459 days where there is a difference of 31 days from conventional methods.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Pondasi Boredpile, Daya Dukung, Penurunan, Plaxis 3D; Boredpile Foundation, Bearing Capacity, Seattlement, Plaxis 3D |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) 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 Vocational > Civil Infrastructure Engineering (D4) |
| Depositing User: | Kumara Ulya Sari |
| Date Deposited: | 27 Sep 2023 06:29 |
| Last Modified: | 27 Sep 2023 06:29 |
| URI: | http://repository.its.ac.id/id/eprint/103995 |
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