Analytical and Testing Methods for Rating Longitudinal Laminated Timber Slab Bridges

Dahlberg, Justin; Liu, Zhengyu; Phares, Brent M.; Wacker, James

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Analytical and Testing Methods for Rating Longitudinal Laminated Timber Slab Bridges

2021-12-01
By Dahlberg, Justin ; Liu, Zhengyu ; Phares, Brent M.

File Language:

English

[PDF - 15.11 MB]

Details

Creators:

Dahlberg, Justin ; Liu, Zhengyu ; Phares, Brent M. ; Wacker, James
Corporate Creators:

Iowa State University. Bridge Engineering Center
Corporate Contributors:

Wisconsin Department of Transportation. Research and Library Unit ; United States. Department of Transportation. Federal Highway Administration ; Wisconsin Highway Research Program
Subject/TRT Terms:
Publication/ Report Number:

WisDOT ID no. 0092-20-01
Resource Type:

Tech Report
Geographical Coverage:

Wisconsin;United States
Edition:

Final Report
Corporate Publisher:

Wisconsin. Dept. of Transportation. Research and Library Unit ; Wisconsin Highway Research Program
Abstract:

The Wisconsin Department of Transportation recognizes the importance of accurately assessing the timber deck slab bridge inventory within the state. Of the 571 timber bridges in Wisconsin, 450 bridges are timber slab bridges. Current methods of load rating employ equations first developed in the later 1980s and early 1990s for determining the equivalent strip width. These equations often produce results that unnecessarily penalize the bridge by requiring a posted weight limit. Through a program of bridge live load tests and analytical modeling, the researchers in this study have both measured and modeled the bridge behavior with more accuracy and have shown the current equivalent strip width calculation methodologies to be conservative, as was originally speculated. Ten unique bridges were tested a part of this study. Three of them were tested twice; once before and once after bridge strengthening measures were employed. An equation to calculate the equivalent strip width was developed with numerous variables in mind.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/62608/dot_62608_DS1.pdf
File Type:

[PDF - 15.11 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:3b0056533a1c65e466e938f7706dffc18001633051cc0cfc6b7d987d6b86f249cca1b200ffcef8657bfd85ef79d369340f9a5843136f54c0ad61014a93c56400

File Language:

English

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