Effect of Creep and Coldness-Induced Shrinkage on the Performance of Laminated Timber Bridge Decks

Loading...
Thumbnail Image

View/Download File

Persistent link to this item

Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

Effect of Creep and Coldness-Induced Shrinkage on the Performance of Laminated Timber Bridge Decks

Published Date

1990-01

Publisher

Type

Report

Abstract

The purpose of this research has been to analyze the effect of creep on stress laminated timber bridges where creep refers to the time-dependent deformational behavior of the wood. Of particular interest has been the cause of stress loss in stress laminated bridges. During the course of this research, another important factor which affects the level of rod stress in timber bridges was discovered: coldness-induced shrinkage of wood. After the construction of a stress-laminated bridge in northern Minnesota in October, 1988, a significant reduction in rod stresses was noted during a particularly cold period in December of that year. Proper rod stresses are needed for a stress-laminated bridge to perform as an orthotropic plate whereby there is a high degree of load sharing between adjacent laminae. An abrupt reduction in rod stress due to external temperatures poses an important design and service issue for timber bridges.

Description

Related to

Replaces

License

Collections

Series/Report Number

Funding information

Center for Transportation Studies

Isbn identifier

Doi identifier

Previously Published Citation

Other identifiers

Suggested citation

Seavey, Robert; Erickson, Robert. (1990). Effect of Creep and Coldness-Induced Shrinkage on the Performance of Laminated Timber Bridge Decks. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/157093.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.