Weighted Prioritization Index for Culvert Sequencing: A Track Settlement Analysis in KVDT Phase 2 (Seremban Line)

Abstract

The jacking method was mostly used in areas where the interval level depth is higher, and its purpose is to reduce disruptions on the surface environment. However, delays of the post jacking construction and end structure backfill specifically headwall and wingwall, leaves the jacked culverts in an unsupported state, resulting in culvert movement and track settlement due to active railway traffic above. Therefore, statistical analysis (Jamovi) was conducted based on secondary data recorded, to establish a sequencing prioritization framework for six sections of jacked culverts which there were two sections from Bangi to Batang benar and four sections from Labu to Seremban along KVDT Phase 2 Seremban line. These six sections were selected because the jacking process had been completed exclusively in this area at the time this research study was conducted. As the KVDT 2 project is currently ongoing, additional culverts may be jacked along the Seremban line in the future. Consequently, this research utilizes secondary data limited to the six sections where the jacking process was completed within the timeframe of this study. Furthermore, to maintain the stability of the structure and environment surrounding, accelerating the building of headwalls and wingwalls can prevent from culvert movement, track settlement and reduce maintenance interventions by securely trapping and permanently locking the jacked culvert and unstable soil condition in place.