Live Load Retaining Wall

Chapter 14 retaining walls july 2020 14 7 14 1 introduction retaining walls are used to provide lateral resistancefor a mass of earth or other material to accommodate a transportation facility.

Live load retaining wall.

In the conventional design of retaining walls and bridge abutments the lateral earth pressure due to live load surcharge is estimated by replacing the actual highway loads with a 600 mm layer of backfill. Surcharge loads acting on retaining walls are additional vertical loads that used to the backfill soil above the top of the wall. Traffic and street traffic for temporary shoring design adjacent to the public way. The train live load surcharge may greatly.

Ls live load surcharge. Steel has very high tensile strength but can bend easily due to its small cross section. Ev the self weight of the soil above the heel of a footing in a semi gravity retaining wall or of the reinforced soil in a mse. For comparison this surcharge is significantly larger than highway live load surcharge which is typically simplified to 250 psf ft.

Surcharge loads shall be applied where vehicular load or pedestrian loads are expected to act on the surface behind a shored excavation or retaining wall within a distance equal to the height of the excavation or wall. Retaining wall design the applicable train live load surcharge is the cooper e80 which can be approximated as 1 880 pounds per square foot per foot psf ft of rail. Eqe dynamic. Missing concrete or pool consolidation and foreign object intrusion in the wall base section will reduce support to the steel and can cause wall failure.

Dc the self weight of structural components. Design relationships table 1 summarizes the influence of increasing the wall batter increasing the unit width increasing the unit s in place density and using better quality backfill on the maximum. This original recommendation was made several decades ago when the highway truck loads were much lighter. Construction since it is the most critical section of wall stem in wall design.

It can be either dead loads for example sloping backfill above the wall height or live load which could result from the highway or parking lot paving or adjacent footing. Prior to completing any retaining wall design it is first necessary to calculate the forces acting on the wall. The walls are used in a variety of applications se including right of way restrictions protection of existing structures that must remain in place. Surcharge loads acting on retaining wall.

Retaining wall to support a fill. Eh static soil lateral load. Retaining wall to support a cut.