ANALISIS PERENCANAAN PONDASI DINAMIS UNTUK MENDUKUNG MESIN TURBIN PADA PABRIK GULA CUKIR JOMBANG
DOI:
https://doi.org/10.22219/jmts.v13i2.2558Abstract
ANALISIS PERENCANAAN PONDASI DINAMIS UNTUK MENDUKUNG MESIN TURBIN PADA PABRIK GULA CUKIR JOMBANG
Dynamic Foundation Design Analysis To Support The Turbine Engine At The Sugar Factory of Cukir Jombang
Ernawan Setyono1 & Abdiyah Amudi2
1&2Jurusan Teknik Sipil Universitas Muhammadiyah Malang
Alamat korespondensi : Jl. Raya Tlogomas 246 Malang 65144
Abstract
Foundation plan to shore up machine load, the foundation system influinced by shaking load, the load caused by imbalance machine force and static system load (foundation and machine). Reminding the change shaking load, according to time and tempo function which long and working in repetition, it caused the structure would be difference compared with structure which accepted static load only. Foundation type used in this planning was block type foundation where in its calculation to find out the condition fulfilled dimention, using trial and error. In general, the foundation weight was the multiple times of machine weight. Direction amplitudo z = 0,127 mm, amplitudo direction x = 0,142 mm, amplitudo direction y = 0,19 mm, amplitudo vertical combination = 0,0083 rad, amplitudo horizontal combination = 0,0027 rad and turque amplitudo = 0,00159 rad. Dimention which able to resist the machine dynamic load by length 9,2 m, wide 4,8 m, and deep 2,8 m.
Keywords : Dynamic Foundation, Elastic Half Space Method
Abstrak
Perencanaan pondasi apabila harus menopang beban berupa mesin, maka sistem pondasi tersebut dipengaruhi oleh beban yang bergetar, beban ini disebabkan oleh gaya-gaya mesin yang tidak seimbang dan beban statis sistem (pondasi dan mesin). Mengingat bekerjanya beban yang bergetar tersebut berubah berdasarkan fungsi waktu dan tempo yang relatif lama dan bekerja secara berulang-ulang, maka hal ini menyebabkan kelakuan struktur akan berbeda apabila dibandingkan dengan struktur yang menerima beban statis saja. Tipe pondasi yang dipakai dalam perencanaan ini adalah tipe pondasi blok, dimana dalam perhitungannya untuk mendapatkan dimensi yang memenuhi syarat menggunakan cara coba-coba. Secara umum berat pondasi adalah sekian kali dari berat mesin. Amplitudo arah z = 0,127 mm, amplitudo arah x = 0,142 mm, amplitudo arah y = 0,19 mm, amplitudo kombinasi vertikal = 0,0083 rad, amplitudo kombinasi horizontal = 0,0027 rad dan amplitudo torsi = 0,00159 rad, Dimensi yang mampu menahan beban dinamis mesin yaitu dengan panjang 9,2 m, lebar 4,8 m dan kedalaman 2,8 m.
Kata kunci : Pondasi Dinamis, Metode Elastic Half Space
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