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Published in:
2025 | OriginalPaper | Chapter
Embankment Construction on Swampy Area Using Controlled Modulus Columns (CMC) for Standard Gauge Railway Project in Tanzania
Authors : Lami Karagoz, Altan Erdem, Hasan Burak Gokce
Published in: Proceedings of the 5th International Conference on Transportation Geotechnics (ICTG) 2024, Volume 4
Publisher: Springer Nature Singapore
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Abstract
The new Standard Gauge Railway (SGR) is a railway system in Tanzania, consisting of a 1,224-km-long single line with a design speed of 160 km/h and linking the country to the neighboring countries of Rwanda, Uganda, Burundi, and the Democratic Republic of Congo. The railway line alignment passes over some soft soil areas where the soil condition consisted of soft and organic clays with a high ground water table, which made the ground conditions swampy and required ground improvement prior to embankment construction. The chainage where the ground improvement is required involves a 6.5-m-high embankment and a culvert construction. The paper presents the design and construction procedures of the controlled modulus columns (CMC) to transfer the load of the foundation block onto a stiffer layer of soil or rock via load transfer platform. As a result, the settlement of the foundation block was reduced while increasing the bearing capacity.