Pengaruh Beban Muatan Berlebih Terhadap Umur Rencana Perkerasan Lentur (Studi kasus Ruas Jalan Bandung - Tasikmalaya KM 77 - KM 79

Abstract

This study aims to analyze the impact of overloading on the design life of flexible pavement using the AASHTO 1993 Method, with a case study on the Bandung - Tasikmalaya Road Sector, KM 77 - KM 79. This road is frequently traversed by overloaded vehicles, which can lead to accelerated pavement deterioration and a reduction in the road's design life. Traffic data, vehicle loads, and existing pavement conditions were utilized to calculate the influence of overloading on the increase of the Equivalent Single Axle Load (ESAL) and to compare it with the pavement design life calculated based on the AASHTO 1993 Method.

The calculation results demonstrate that the percentage of overloading significantly reduces the road's design life. The Vehicle Damage Factor (VDF) for normal loads over a 10-year design life is $20,495,514.04$ ESAL, whereas for overloaded conditions, it reaches $33,083,921.23$ ESAL. This 47% increase in the cumulative VDF value causes the road's service life to last for only 4 years out of the total 10-year design life. To maintain road functionality throughout the 10-year design life, an overlay thickness of 3.83 cm is required with a Resilient Modulus of 2,000 MPa and a minimum Marshall Stability of 800 kg. Alternatively, an overlay of 3.26 cm is needed for Modified Asphalt Concrete (Laston Modifikasi) with a Resilient Modulus of 3,000 MPa and a minimum Marshall Stability of 1,000 kg, with the material applied at approximately 5 cm before compaction.