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New Bhairab Railway Bridge, Ashuganj, Bangladesh
||Driving bridge foundations
||ICE 1412C with 200TC Clamp / 3.4m beam ICE 900 powerpack
The Chittagong area has the potential to expand as a second industrial hub. In this project the client is constructing a new railway bridge parallel to the very old one. It covers a part of the Dhaka-Sylhet Road improvement that crosses the River Meghna between Ashuganj and Bhairab.
The section of works crossing the river, the main bridge, is 929m long and consists of seven 110m main spans and two 79.5m spans of post-tensioned concrete box girders constructed as in-situ segmental balanced cantilevers. The railway ministry selected Ircon-Afcons JV and Gannon-FLCL Consortium for the foundation, construction and approach roads along the side. The costs of this second Bhairab Bridge project are approximately BDT5.675bn.
The new railway bridge will have a length of 900m supported by 10 pile foundations. Each pile foundation will have 6 piles, a total of 60 liners to be driven to complete the piling job.
The tube diameter is 2.5 m with a wall thickness of 25mm. Piling was to be done in the Bhairab river using a jack-up barge. Client was driving the tubes up to 31m including 17m draft. The soil strata below the water bed level was soft and hence the piles were penetrating easily at a speed of 2m/min. The ICE 1412C Vibratory Hammer was commissioned by Suretech.
The main reasons for the client choosing the ICE 1412C
- ICE Holland made a drivability analysis proving 1412C is the correct machine to do the job, accepting stringent commercial terms.
- Suretech has a local subdealer Milontika to provide support.
- Timely response to all their queries and solving them to clients satisfaction.