Elk Falls Pipeline Bridge

Photo: B&T
Elk Valley Pipeline Bridge, Campbell River, BC, Canada

Buckland & Taylor used the calibrated computer model to investigate the effects of mitigation alternatives, such as additional supports with or without dampers.

The 49 m (160 ft.) Elk Falls Pipeline Bridge crosses the Campbell River just upstream of the BC Hydro Powerhouse, northeast of the Town of Campbell River.

The bridge is an all-welded steel Vierendeel truss made up of HSS sections. The bridge forms part of the BC Parks trail system and is used by 60,000 pedestrians a year.

Strong pedestrian induced vibrations have been observed and reported in the past. These vibrations are largely caused by groups of teenagers that excite the bridge near its natural frequency.

Buckland & Taylor's Scope of Work:

Buckland & Taylor inspected the structure and investigated the possibility of founding additional supports in the existing alignment. For this purpose, we generated a static and dynamic model of the existing structure.

Using the calibrated computer model, Buckland & Taylor investigated the effects of mitigation alternatives, such as additional supports with or without dampers. We also developed the most cost efficient mitigation alternative and prepared design drawings and specifications for the preferred mitigation measure.

Buckland & Taylor completed analysis and design of auxiliary support to reduce vibration created by group excitation.

LAST UPDATED: 27.01.2014