Evaluation of Operational Loading of the Light-Rail Transit (LRT) in Capital Region, Indonesia

Abstract

In 2015, the Indonesian government issued regulations to accelerate the implementation of integrated Light-Rail Transit (LRT) in the capital region and its surroundings. In order to ensure its operational safety, experimental work is required to test components’ strength of the manufactured LRT structures. Following the JIS 7105 standard test method, the strain and deflection of the structures were measured by vertical load, compression, rotation, and three-point load support test. The critical area estimated in the railroad structure were conducted according to the finite element method, in which strain gauges are installed in areas where the stress concentration exceeds nominal pressure, namely notches, bends, and junction areas. The result shows that the maximum stress on the LRT train structure occurs at the door, where maximum compressive strain value is -1082 μe » -75.74 MPa on the left and the maximum tensile strain value is 597 μe » 41.79 MPa at the right door. The results of fatigue load analysis represent the average stress (σm) and voltage amplitude (σa) at the coordinate system located in the Søderberg triangle. Meanwhile, the camber value with the full vertical load still has a positive value of 3.03 mm, which indicates a safe limit.

Structural Strength Analysis of 57-Ton Capacity Flat Carriage Coal Transporter with 2x20 Feet Container Subjected to Operation Conditions

“…The experiment was carried out through static and dynamic testing of 57-ton GD along with an operating load of coal in a 2x20 ft container. The goal is to find out the strength and durability of the carriage in receiving operational loading according to the specified acceptance criteria and use the fatigue limit diagram approach based on the Soderberg method 13,35) .…”

“…In its operation, the coal-transporting flat carriage experiences various static and dynamic loads on its structure, due to the condition of the railroad that could be straight, turns left or right, go uphill and downhill; and at the time of stopping, when there is braking, experiencing compression to the structure due to the series of carriages from the front-rear. The impact of these operational loading conditions could affect the structure/ construction of the carriage [13][14][15][16] . The Indoneian regulation of the Minister for Transportation number PM 17 of 2011 states that every carriage operated must have the structural strength and durability in receiving operational loading 17) .…”

“…The Indoneian regulation of the Minister for Transportation number PM 17 of 2011 states that every carriage operated must have the structural strength and durability in receiving operational loading 17) . The purpose of this study is focused on determination of the structural strength and durability of the 57-ton flat wagon prototype at operational conditions, in accordance with the specified acceptance criteria, and to use a fatigue limit diagram approach to the relationship between the mean stress and stress amplitude based on the Soderberg method 13,17,18) .…”

Electromagnetic interference measurement for axle counters light rapid transit railway in Indonesia

“…The design exploration and verification has been done in this paper [21]. Currently, Indonesia is promoting a light rapid transit (LRT) and the signaling system is a critical one as the LRT has to be properly operated [22]. Therefore, it is necessarily researching the electromagnetic disturbances in the LRT railway to ensure that the axle counter on the LRT showing the appropriate results.…”

Bogie Frame Structure Evaluation for Light-Rail Transit (LRT) Train: A Static Testing

“…This mode of transportation is expected to reduce the density of passengers on highway and commuter line trains. This LRT train is designed with a maximum operating speed of 80 km/hour and a maximum carrying capacity of about 220 people in one train [1,2].…”