Train weighing system helps save Bangladeshi bridge
Published: 18 May 2012 - Rachael Morling
An in-motion ‘Weighline’ train weighing system has been installed by Railweight in Bangladesh to protect a bridge linking the northern region of the country with the capital, Dhaka.
The Bangabandhu multipurpose bridge over the Jamuna River has developed a number of cracks over the years and in a bid to protect its structure, the government has placed weight restrictions on freight trains passing over it.
Before installing the system, each passing train was manually checked; however with around 17 trains a day crossing the bridge, this was not only time consuming but sometimes inaccurate.
The new weighing system will weigh trains while they are moving at speeds of up to 80km/hr with moving trains weighed to an accuracy of better than +/- 0.25 percent and individual wagons to +/- 0.5 percent. Overweight trains are stopped and not allowed to cross the bridge until they are bought within tolerance. The system will also accommodate both broad gauge and metre gauge trains and automatically identifies vehicles without any operator intervention.
Each system features four pairs of transducers, which the installers fitted to sections of rails that matched the existing rail type, a TSR4000 weight indicator and I-Line software for overloaded train management through dedicated PCs.