Analisis Gelagar Jembatan Beton Bentang 15 Meter Menggunakan SAP2000 di Pulau Babar
DOI:
https://doi.org/10.59188/jurnalsostech.v6i10.33013Keywords:
jembatan beton bertulang, SAP2000, gelagar T, penulangan, kelayananAbstract
Jembatan menunjang konektivitas transportasi wilayah kepulauan sehingga memerlukan pemeriksaan kekuatan dan kelayanan struktur. Penelitian ini mengkaji dokumentasi desain gelagar T beton bertulang pada rencana Jembatan Batu Merah 2 bentang 15 meter di Pulau Babar. Tujuannya adalah menelaah pemodelan struktur, menyajikan gaya dalam dan penulangan, memeriksa konsistensi kapasitas terpilih, serta memperjelas batas kesimpulan lendutan. Metode penelitian menggunakan pendekatan kuantitatif analitis berupa studi kasus dengan penelaahan dokumen geometri, mutu material, perhitungan pembebanan, tangkapan layar SAP2000, detail penulangan, dan catatan lendutan. Gaya dalam rencana dipertahankan sesuai sumber, sedangkan luas tulangan, kapasitas lentur, dan kapasitas geser dihitung ulang berdasarkan parameter. Hasil pemeriksaan menunjukkan kapasitas lentur tereduksi sebesar 3.791,207 kNm dan kapasitas geser tereduksi sebesar 792,718 kN, dibandingkan tuntutan momen 1.447,1743 kNm dan geser 722,52 kN. Rasio pemanfaatan lentur sebesar 0,382 dan geser sebesar 0,911 menunjukkan bahwa geser lebih dekat terhadap kapasitas. Lendutan individual terbesar akibat beban lajur mencapai 11,40 mm, di bawah batas pembanding 62,50 mm. Namun, ketidakkonsistenan geometri, ketiadaan berkas model, dan kombinasi pengendali yang belum terlacak membatasi interpretasi hasil. Penelitian menyimpulkan bahwa kecukupan penampang bersifat bersyarat; penetapan keamanan dan kelayanan menyeluruh memerlukan penyelarasan model, verifikasi kombinasi pembebanan, pemeriksaan detail penulangan, serta evaluasi lendutan kombinasi dan jangka panjang sebelum desain akhir dapat ditetapkan.
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Copyright (c) 2026 Sidney Casey Rosalia Palapa, Julius Everhart Tenda, Noldie E. Kondoj
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