Simplified Analytical Model of a Covered Burr-Arch-Truss Timber Bridge

F. Fanous; Douglas R. Rammer; T. Wipf

Treesearch

Simplified Analytical Model of a Covered Burr-Arch-Truss Timber Bridge

Formally Refereed

Authors:

F. Fanous, Douglas R. Rammer, T. Wipf

Year:

2013

Type:

Full Proceedings

Station:

Forest Products Laboratory

Source:

In: Wacker, J.; Krohn, J., eds. Proceedings, 2nd International Conference of Timber Bridges. Washington, DC: WoodWorks – Wood Products Council, 2013; 11 p.

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Download (PDF 900 KB): https://research.fs.usda.gov/download/treesearch/46110.pdf

Abstract

Due to the importance of historical timber covered bridges throughout history, their preservation is necessary. However, conducting an accurate structural evaluation of these types of bridges has always caused difficulties to bridge engineers. This paper summarizes an investigation that was sponsored by the Federal Highway Administration and the USDA Forest Products Laboratory to develop a simple but accurate analytical model to analyze Burr Arch Truss bridges. A three dimensional model that included the splice joints that were used in the construction of the bridge was utilized in the analysis. The analysis was carried out using the STAAD finite element software.

Keywords

historical, timber, Burr-Arch, bridge, finite element, splice joints, joint eccentricities

Citation

Fanous, F.; Rammer, D.; Wipf, T. 2013. Simplified Analytical Model of a Covered Burr-Arch-Truss Timber Bridge. In: Wacker, J.; Krohn, J., eds. Proceedings, 2nd International Conference of Timber Bridges. Washington, DC: WoodWorks – Wood Products Council, 2013; 11 p.