Theresia Dinar Tirta Narindraswari, Budi Rahardjo, Wahju Herijanto

Geometric Design of the Banjarmasin-Martapura Railway Line

Introduction

Geometric design of the banjarmasin-martapura railway line. Explore the geometric design of the 42.940 km Banjarmasin-Martapura railway line in South Kalimantan. Addressing IKN support & traffic, this study details a 100 km/h double track, curves, and construction specs using AutoCAD Civil 3D.

Abstract

South Kalimantan Province is experiencing population growth and is planned to serve as a supporting area for the National Capital (IKN) of Nusantara. Banjarbaru City, as the provincial capital, is viewed as a potential center for economic growth. The region surrounding Syamsudin Noor Airport is also projected to develop into a hub of strategic activities, which could lead to traffic congestion. Besides Banjarbaru, high passenger demand has also been observed in Banjarmasin City and Martapura. According to the 2030 National Railway Master Plan (RIPNAS), a railway line is planned to connect Banjarmasin, Syamsudin Noor Airport, Banjarbaru, and Martapura. Currently, there is no geometric design available for this railway line, making it necessary to develop a suitable design that aligns with the topographic and other local conditions. This study employs AutoCAD Civil 3D and other supporting software to create the railway design. The proposed railway line spans 42.940 kilometers, with a planned operational speed of 100 km/h, consisting of both at-grade and elevated sections. The design incorporates 15 horizontal curves, with radii of 1660 meters for Full-Circle curves and 560 meters for Spiral-Circle Spiral curves. The railway is classified as Class I, with a 1435 mm gauge and a double track configuration. The rail type used is 141RE, paired with S-35 concrete sleepers produced by PT. WIKA Beton, and fastened using KA Clip fasteners. The ballast layer has a top layer thickness of 30 cm, while the sub-ballast is 45 cm thick. The estimated construction cost is Rp31,333,291,269,000.00.

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