Electronic Theses and Dissertation

Proyek konstruksi jembatan merupakan pekerjaan yang kompleks dan melibatkan berbagai pemangku kepentingan dalam rantai pasok material, mulai dari pemasok, subkontraktor, hingga kontraktor utama. Salah satu tantangan utama yang dihadapi dalam pelaksanaannya adalah keterlambatan proyek akibat terganggunya pasokan material. Risiko-risiko dalam rantai pasok material seperti keterlambatan pengiriman, ketidaksesuaian spesifikasi, dan kendala produksi dapat menyebabkan gangguan signifikan terhadap waktu pengerjaan proyek. Penelitian ini bertujuan untuk mengidentifikasi risiko rantai pasok material yang dominan serta menganalisis pengaruhnya terhadap keterlambatan proyek jembatan di Aceh. Penelitian kuantitatif ini menggunakan metode analisis Relative Importance Index (RII) dan regresi linear berganda. Data diperoleh melalui penyebaran kuesioner kepada 60 responden yang terdiri atas project manager, site manager, dan staf logistik pada proyek jembatan di Aceh. Hasil penelitian menunjukkan bahwa risiko rantai pasok material yang paling dominan adalah pemesanan material tambahan akibat adanya perubahan pada spesifikasi pekerjaan, waktu tunggu material yang panjang akibat proses pengiriman bertahap dari pemasok, dan kerusakan peralatan berat pengangkut material di lapangan yang menyebabkan keterlambatan pengiriman material. Sedangkan jika ditinjau per faktor, faktor supply, demand, dan process termasuk dalam kategori risiko sedang. Hasil analisis regresi linear berganda menunjukkan bahwa risiko rantai pasok material memiliki pengaruh terhadap keterlambatan proyek jembatan di Aceh. Nilai koefisien determinasi (Adjusted R Square) sebesar 0,572 menunjukkan bahwa sebesar 57,2% keterlambatan proyek dipengaruhi oleh risiko rantai pasok material, sedangkan sisanya sebesar 42,8% dipengaruhi oleh faktor lain di luar penelitian.

Kata Kunci: Rantai pasok, Material, Risiko, Keterlambatan, Jembatan

Bridge construction projects are complex activities involving various stakeholders in the material supply chain, including suppliers, subcontractors, and main contractors. One of the main challenges encountered during project implementation is project delays caused by disruptions in material supply. Risks in the material supply chain, such as delivery delays, specification mismatches, and production constraints, can significantly affect project execution and completion time. This study aims to identify the dominant material supply chain risks and analyze their effects on delays in bridge construction projects in Aceh. This quantitative study employed the Relative Importance Index (RII) analysis and multiple linear regression methods. Data were collected through questionnaires distributed to 60 respondents consisting of project managers, site managers, and logistics staff involved in bridge construction projects in Aceh. The results showed that the most dominant material supply chain risks were additional material orders due to changes in work specifications, long material waiting times caused by gradual delivery processes from suppliers, and damage to heavy equipment used for material transportation in the field, which caused delays in material delivery. Meanwhile, when analyzed by factor, the supply, demand, and process factors were classified as moderate-risk categories. The results of the multiple linear regression analysis indicated that material supply chain risks have a significant influence on bridge project delays in Aceh. The results of the multiple linear regression analysis indicated that material supply chain risks have an effect on delays in bridge construction projects in Aceh. The coefficient of determination value (Adjusted R Square) of 0.572 indicates that 57.2% of project delays are influenced by material supply chain risks, while the remaining 42.8% are influenced by other factors outside this study. Keywords: Supply chain, Material, Risk, Delay, Bridge