Braking Page
The braking force is placed in all design lanes which are considered to be loaded and which are carrying traffic headed in the same direction.
Accompanying load lane factors that are defined in traffic page will be added in the necessary load cases
| Setting | Description | |||
|---|---|---|---|---|
| (a) Single vehicle stopping | the braking force for single vehicle stopping (FBS) shall be calculated as follows: Fbs = 0.45Wbs Where: | Fbs = braking force applied by a single vehicle | Wbs= load due to a single lane of the M1600 moving traffic load for the length under consideration, in kilonewtons, up to a maximum of 1600 kN. No dynamic load allowance is to be included FBS shall be applied to any lane of a multi-lane bridge to produce the most adverse effects. | |
| Height of application (h) | Distance between the cross-section slab surface and the level of the finished roadway. | |||
| Total line load | Intensity of the line load deriving from dividing the total braking force over the length of the bridge as defined in Superstructure > Spans. | Note: This value is calculated automatically and cannot be changed directly but only by adapting the "total braking load". | ||
| (b) Multi-lane moving traffic stream stopping | the braking force for multi-lane moving traffic stream stopping (FBM) shall be calculated as follows: Fbm=0.15*Wbm Where: | Fbm = braking force applied by multiple vehicles | WBM = load due to multiple lanes of the M1600 moving traffic load for the length under consideration, in kilonewtons. No dynamic load allowance is to be included. | Accompanying lane factors shall be applied, i.e.-= SALF ×M1600 |
| Total line load | Intensity of the line load deriving from dividing the total braking force over the length of the bridge as defined in Superstructure > Spans. |
Note: This value is calculated automatically and cannot be changed directly but only by adapting the "total braking load".