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0403026701 - Dr. Imam Aschuri, Ir., M.T.
Dosen Pembimbing 1
Ronaldhi Widhiyantoro / 22 2013 295
Penulis
Letak abutment berada sekitar aliran sungai menimbulkan potensi gerusan lokal. Abutment tipe spill-through dilengkapi bangunan pelindung yang memiliki kedalaman lebih dari gerusan lokal. Berdasarkan penelitian abutment Jembatan Cibeureum Tol Soroja didapatkan kedalaman gerusan lokal potensial sedalam 1,412 m dan bangunan pelindung memiliki kedalaman 2 m sehingga, bangunan pelindung masih dapat berdiri. Didasarkan output pemodelan didapatkan nilai (FK) 1,332 pada model tanpa gerusan lokal dan model dengan gerusan lokal didapatkan (FK) 1,327, nilai (FK) didapatkan masih memenuhi kriteria aman (FK≥1,25). Pada kondisi asumsi terjadi perubahan morfologi sungai dengan bertambahnya kecepatan aliran sehingga menimbulkan gerusan lokal hingga dibawah bangunan pelindung dan kondisi tanpa bangunan pelindung, didapatkan nilai (FK) 1,246 dan 1,154 sehingga, abutment tidak lagi dalam kriteria aman. Dapat disimpulkan gerusan lokal berdampak pada nilai (FK) tetapi terlalu signifikan tetapi tetap memerlukan proteksi.