Kohesi: Jurnal Sains dan Teknologi

Articles

Vol. 11 No. 4 (2026): Kohesi: Jurnal Sains dan Teknologi, ISSN 3025-1311

INTEGRASI BLOCPLAN DAN VERIFIKASI SPASIAL UNTUK EVALUASI KELAYAKAN ALTERNATIF SITE LAYOUT PROYEK KONSTRUKSI

Submitted
September 10, 2026
Published
2026-09-10

Abstract

Model otomasi perencanaan site layout konstruksi umumnya bergantung pada algoritma heuristik untuk membangkitkan konfigurasi fasilitas berbasis kedekatan. Namun, model topologis ini kerap mengabaikan rintangan (obstacle) fisik, sehigga menghasilkan site layout yang optimal secara matematis namun tidak dapat digunakan di lapangan. Penelitian ini mengevaluasi kelayakan konstruksi dari keluaran heuristik melalui kerangka hibrida yang mengintegrasikan algoritma generatif BLOCPLAN dengan memverifikasi geometris berbasis AutoCAD. Dalam penerapannya pada Proyek Pembangunan Tahap II Gedung Rumah Sakit Kharitas Bhakti Pontianak yang sangat padat, algoritma menghasilkan 20 alternatif site layout untuk 17 fasilitas berdasarkan matriks ARC. Verifikasi dilakukan untuk mengetahui adanya benturan spasial terhadap batas lahan, tabrakan elemen struktural, dan tumpang tindih antar fasilitas. Hasil verifikasi spasial menunjukkan bahwa 60% alternatif site layout (12 dari 20 tata letak) tidak valid karena adanya ketidaksesuaian geometris, yang terutama disebabkan oleh dimensi ekstrem fasilitas Penyimpanan Besi 1 (panjang 22 meter). Hasil verifikasi menunjukkan bahwa konflik overlapping merupakan jenis konflik terbesar yaitu pada 9 alternatif (60%), sedangkan boundary constraint dan obstacle constraint masing-masing ditemukan pada 3 alternatif (20%). Delapan alternatif yang telah dinyatakan valid dan dianggap layak untuk diaplikasikan kemudian dievaluasi berdasarkan layout score yang diberikan BLOCPLAN. Alternatif 13 diidentifikasi sebagai tata letak paling optimal, berhasil memperoleh skor tertinggi 0,56 dengan tetap memenuhi semua batasan fisik yang ada. Temuan ini menegaskan pentingnya menyesuaikan output algoritma teoritis dan penerapannya di lapangan.

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