A Wide Range of Bridge Analysis Applications

Single-span bridges

Use LimitState:RING for a quick and easy single-span highway or railway arch bridge analysis. Problems can contain stone voussoir or brickwork arch barrels, either bonded and multi-ring. A range of predefined and user-defined arch profiles are available.

Multi-span bridges

With LimitState:RING the critical mode of response is identified automatically, whether this involves one, two or more adjacent bridge spans. Unlike other masonry arch software, there is no need to manually balance thrusts at pierheads.

Railway bridges

LimitState:RING was developed in association with the International Union of Railways (UIC) and ships with a database of rail vehicles. Axle loads are distributed through track / sleepers in accordance with industry practice.

Damaged structures

With LimitState:RING you can incorporate bridge-specific details into your arch bridge analysis, including defects such as localized mortar loss and zones with differing material properties.

Multi-ring arches

Ring separation in a multi-ring masonry arch barrel adversely affects bridge load carrying capacity. LimitState:RING can model the effects of full or partial ring separation, and the associated combined sliding / hinging modes of response.

Bridge diagnostics

LimitState:RING includes the ability to impose support movements. This provides a powerful diagnostic tool for investigating the causes of observed cracks and also for investigating the behavior of masonry arch bridges under service loads.

Reinforced masonry arches

LimitState:RING allows masonry arch bridges incorporating reinforcement to be modelled. Moment, shear and normal force diagrams can be displayed to help users interpret the response of reinforced masonry arch bridges.

Optional permissible limit state analysis

When a loading (traffic) regime changes, a bridge in good condition may degrade rapidly and become unserviceable. LimitState:RING optionally allows analysis of the permissible limit state, permitted by CS454 and described in CIRIA C800.