Overload truck wheel load distribution on bridge decks.

Till, Roger D.

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Overload truck wheel load distribution on bridge decks.

2009-04-01
By Till, Roger D.

File Language:

English

Details

Creators:

Till, Roger D.
Corporate Creators:

Michigan. Dept. of Transportation. Construction and Technology Division
Corporate Contributors:

Michigan. State Transportation Commission
Subject/TRT Terms:

Bridge Decks Bridges--Live Loads--Mathematical Models Live Loads Mathematical Models Trucks--Weight Trucks By Weight Wheel Loads
Publication/ Report Number:

R-1529
Resource Type:

Tech Report
Geographical Coverage:

Michigan
Corporate Publisher:

Michigan. Dept. of Transportation. Construction and Technology Division
Abstract:

There is a need to accurately analyze the load effects on bridge decks from permitted overload trucks on

Michigan’s roads. The AASHTO Standard Specifications for Highway Bridges, 17th edition, provides a

distribution width of live loads when reinforcement is parallel to traffic in section 3.24.3, but not when

reinforcement is perpendicular to traffic. There is a distribution width factor, E, for cantilever slabs given

in section 3.24.5; however, the structural action for this case is different than that of a continuous deck

slab over multiple beams. In the Bridge Analysis Guide, 2001 edition, it is stated in Example 9, Bridge

Deck Rating For Designated Loading, that, “Based on study of the AASHTO method, the moment effect

of the wheels of tandem axles spaced at 3'-6" will overlap, and hence are additive.” The study of the

AASHTO method was basic and a more detailed method is needed to correctly model wheel loading from

overload trucks on bridge decks.

A detailed method for accurately modeling wheel loading from overload trucks will be developed for

bridge decks, followed by a simplified approach that can be used to analyze bridge decks for these

overloads.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:efb698d271343258473883bb9fcc6257b5ffd3b70a3a5b78f421f8ed82248915
Download URL:

https://rosap.ntl.bts.gov/view/dot/18188/dot_18188_DS1.pdf
File Type:

[PDF - 6.49 MB ]

File Language:

English

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