Pengaruh Beban Berlebih (Overload) Terhadap Pengurangan Umur Rencana Perkerasan Jalan

SIA, Gisella Helga Ngewi (2024) Pengaruh Beban Berlebih (Overload) Terhadap Pengurangan Umur Rencana Perkerasan Jalan. Undergraduate thesis, Universitas Katolik Widya Mandira Kupang.

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Abstract

Roads are the means and play an important role in the smooth running of land transportation traffic. Basically, as the road ages, the quality of the road structure decreases, especially if heavy vehicles are passing which tend to exceed the provisions. Current roads often experience damage in a relatively short time (early damage), both newly built roads and newly repaired roads (overlays). Overloading is a condition where the vehicle load exceeds the maximum allowable limit. The aim was to determine the extent of the influence of overload on the design life of the flexible pavement on the Yos Sudarso road, Alak sub-district, Kupang City, East Nusa Tenggara. Based on the results of calculating the remaining life of the pavement, the remaining service life of road pavement construction based on planning under normal conditions is 50%. For the additional load condition of 5%, the remaining life of the pavement decreased from normal conditions that occurred in the fourth year where the remaining life was only 36%. When the weight of a heavy vehicle is increased by 10%, the simulation results show that the residual life is negative at 25.20%. This continues if the vehicle load is added by 15%, and the simulation results are obtained which shows the planned residual life is negative at 4.18%. The effect of overload: adding a load to a vehicle type from the standard load will result in a fairly large reduction in the equivalent figure, namely under normal conditions the decrease that occurs at the beginning of the road construction is 90.00% and at the end of the road maintenance period it is 0.00%, in conditions of 5% additional load the decrease that occurred at the start of construction was 87.36% and at the end of the road maintenance period -25.98%, in conditions of 10% additional load the decrease that occurred at the beginning of construction was 85.04% and at the end of the road maintenance period -49.06%, and under conditions of 15% additional load the decrease that occurred at the beginning of construction was 80.84% and at the end of the road maintenance period -90.97% so that the repetition load over the life the plan that the pavement can support is achieved before the design life. Adding a load beyond the standard axle load on the vehicle axle will result in a significant increase in damaging power. Damage occurs more quickly because the concentration of load on each wheel of the vehicle is very high due to the limited number of axles, especially with excessive loads. After all, road pavement planning still refers to vehicle design for normal loads. The mechanism by which a vehicle's load influences the road pavement depends on the shape ix of the vehicle's axle configuration and the area of contact between the tire and the road pavement.

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