Burr Truss

As Burr Truss or Burr Arch Truss refers to a design that combines arc and half-timbered construction with each other. The construction technology was developed in 1804 by Theodore Burr and finds application especially in the covered wooden bridges in North America.

Features

The basic idea of ​​design is that the sheet supports the entire weight of the bridge, while the timber to stabilize the bridge. Although a truss design could carry the weight that guide arch bridges, the driving dynamic horizontal forces generated on the bridge by acceleration and braking of the vehicles, in the form of train and compression forces from. On girder bridges such forces produce unfavorable bending moments at the supports.

In the literature, the view is taken that the timber carries the weight of the bridge and the arch bridge to stabilize the part. Regardless of the mode of action of a Burr Truss bridge is more stable than an arc or beam bridge.

Single Documents

• Arch bridge