| 摘要 |
The invention relates to the field of bridges and more particularly to those that are relatively quickly deployable, as required in military applications. Prior art bridge reinforcement systems utilise a series of rigid reinforcement links which are suspended from the underside of the bridge to be reinforced. Such systems comprise a large number of individual tension elements all of which must be pre-installed and tensioned. This type of arrangement which is complex results in deployment of the reinforcement system being equipment and man intensive. Furthermore, this type of reinforcement system projects by as much as two metres from the underside of the bridge which means that it cannot be used where there are obstructions at this level. The invention proposes the use of a number of aramid fibre tendons which are attached to the underside of the bridge and held under tension. |
