Rational load rating of deck-girder bridges with girder end shear cracks in reverse orientation : technical summary.

Bernica, Andrew; Rasheed, Hayder

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Rational load rating of deck-girder bridges with girder end shear cracks in reverse orientation : technical summary.

2017-04-01
By Bernica, Andrew ; Rasheed, Hayder

File Language:

English

Details

Creators:

Bernica, Andrew ; Rasheed, Hayder
Corporate Contributors:

Kansas. Dept. of Transportation. Bureau of Research
Subject/TRT Terms:
Publication/ Report Number:

Report Number: K-TRAN: KSU-15-2
Resource Type:

Tech Report
Geographical Coverage:

Kansas ; United States
Corporate Publisher:

Kansas. Dept. of Transportation. Bureau of Research
Abstract:

A user interface creates a grillage model of an existing bridge and places various rating trucks on the ; bridge. Equivalent flexibility analysis distributes truck live loads within deck panels to surrounding ; girders and diaphragms. Stiffness matrices are utilized to find nodal displacements and reactions at the ; girder supports caused by truck live loads and bridge dead load. These reactions are checked against RISA ; software models to test the accuracy of the stiffness matrix application. ABAQUS FE models and Mohr’s ; circle stress distribution determine driving and clamping forces on the crack due to resolution of dead ; and live load reactions and friction force generated between the concrete girder and rusty steel bearing ; pad along the shear crack orientation. In addition to the simplified modified compression field theory, ; these clamping and driving forces are used to determine the shear capacity of each girder at the reverse ; cracks. A modified version of Equation 6B.4.1 from the Manual for Bridge Evaluation (AASHTO, 2011) ; is used to find operating and inventory rating factors (RFs) for the bridge.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/32232/dot_32232_DS1.pdf
File Type:

[PDF - 592.95 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:810f0b855f354f70248d6f837a63133f4258a22c42c708d7697cba4886462bb2

File Language:

English

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