Across England there are hundreds of bridges and viaducts constructed from brick and random stone usually built using brick arch spandrels, built well over 100 years ago, having not been designed to meet today’s standards with volume and weight of traffic that we have on the roads and railways today many are in need of reinforcement and repair in order to maintain their use.
Bridge Repairs
Many of these structures have fallen into a state of disrepair and must be reinforced in order to keep them open and serving their purpose. Traditional reinforcement is costly and can lead to major road and rail closures and diversions but Newman’s are able to use modern methods of repair to reinforce these structures.
Bridge Reinforcement
Utilising the Twistfix system we are able to reinforce delaminated spandrels enabling them to withstand the weights and speeds that road and rail vehicles impose in this modern world.
By installing helical bar to the underside of the spandrel and installing grout ties through the spandrel we are able to provide an engineered reinforcement solution that enables the route to stay open and improves the load capacity of these bridges and viaducts. Click here to view the Twistfix method video.
Much of the pointing has failed on the large structures and removal and replacement is a delicate process. Newman’s skilled technicians are able to reinstate mortar that’s loose or missing combined with our structural reinforcement scheme we are able to provide a last guaranteed solution.
We are currently carrying out a structural inspection and repair to a brick built railway bridge in North London.
Our client expressed concerns over the visible cracking and bowing present to the structure of which carries high speed trains into central London so it was vital that we acted quickly in order to carryout the inspection, design and implement a suitable structural repair scheme.
Bridge-reinforcement
To save time and cost in scaffold we opted to use our van mounted cherry picker that will enable our installation to be carried out rapidly, in less time that it would take to erect scaffolding.
The spandrel is suffering from de-lamination causing in some brickwork to fall from the masonry arch severely weakening the structure. the sofit which carries and distributes the loads of the masonry arch was showing signs of racking caused by vibration allowing water to penetrate into the structure causing defective pointing. the brick pier was also suffering from major cracking and separation.
We will be installing Twistfix helical beams at 300mm centres horizontally accross the masonry arch creating a grid pattern with the bars drilled 1.5m into the supporting pillars providing a reinforced structure distributing the loads. and over 4000 1.5m grout ties will be installed through the sofit into the arch pinning the sofit and preventing further delamination.
the works will be carried out so that the bridge remains fully functional and the road remains open and accessible.
