00804689

Component

https://doi.org/10.3141/1740-12

http://scholar.google.com...cker&publication_year=2000

Stress-laminated timber bridges were introduced into the United States in the late 1980s. Since then this concept has been used for more than 500 bridges constructed on roadways throughout the United States. To evaluate the performance of these bridges, the Forest Products Laboratory of the U.S. Department of Agriculture Forest Service and the Federal Highway Administration initiated a nationwide bridge-monitoring program. A field evaluation and the results obtained through that monitoring program for stress-laminated bridges that have been continuously monitored for 2 or more years after installation are presented. Included are discussions related to bridge design and construction, moisture content, stressing bar force, vertical creep, load test behavior, and condition evaluation. On the basis of the monitoring program results, the performance of stress-laminated timber bridges is generally satisfactory, although there are areas in which performance can be improved.

This paper appears in Transportation Research Record No. 1740, Structural Design Issues.

English

p. 96-103

2000

Transportation Research Record

0309067448

Figures (1) ; References (29) ; Tables (1)

Bridge design; Condition surveys; Construction; Creep; Laminated wood; Load tests; Moisture content; Monitoring; Performance evaluations; Stresses; Wooden bridges

Bridges and other structures; Construction; Design; Highways; I24: Design of Bridges and Retaining Walls

TRIS, TRB, ATRI

Jan 17 2001 12:00AM

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