Analisis Perubahan Desain Box Culvert pada Jembatan Penghubung: Studi Kasus Proyek Pelabuhan Terminal Teluk Lamong

Abstract

This study aims to analyze changes in the box culvert design for the connecting bridge project in the Teluk Lamong Port Terminal area and to identify the considerations underlying those changes. The study employed a case study method with a qualitative descriptive approach. Research data were obtained through a review of the initial and revised designs, procurement documents, project documentation, and information from weekly meetings involving the contractor, project owner, and planning and supervision consultants. The results indicate that the box culvert configuration was changed from two units placed side by side to a single unit. In addition to the change in the number of units, there was an adjustment in dimensions from 400 cm in the initial design to procurement specifications for a box culvert measuring 300x200x120 cm with a wall thickness of 50 cm and K-350 concrete strength. The revised design also showed the addition of flanges on the sides of the box culvert as a change in construction details. The design change from two box culvert units to a single unit in the connecting bridge project was made to accommodate the conditions and requirements of the project’s implementation. Based on observations, interviews, and project documentation, this change was influenced by considerations regarding site conditions, ease of implementation, and technical design aspects. The use of a single unit with a revised design is deemed capable of meeting the project’s needs while simplifying the construction process