NDT of bridge pins on Pennsylvania Dept. of Transportation structures

William J. Miller; M. K. Chaney

doi:10.1117/12.209783

19 May 1995 NDT of bridge pins on Pennsylvania Dept. of Transportation structures

William J. Miller, M. K. Chaney

Proceedings Volume 2456, Nondestructive Evaluation of Aging Bridges and Highways; (1995) https://doi.org/10.1117/12.209783
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

The Pennsyulvania Department of Transportation conducted a two phase investigation of all fracture critical pin hanger assemblies between 1988 and 1991 of 23 bridges. The first phase consisted of visually inspecting and documenting the condition of the pin assemblies. The second phase involved nondestructive testing of the pins and any hanger assembly parts that the engineer requested. This testing was performed by consultant engineering firms under contract with individual Penn DOT Engineering Districts. The Mehoopany Bridge was the only structure which was tested exclusively by the department's personnel. Twenty fracture critical bridges were consequently retrofitted with support girders or rod support assemblies. The remaining three locations had the pin hanger assemblies removed and the structures were made continuous. Also, the pins were replaced at some of the 20 locations. All removed pins were requested to be retained and sent to the Department's Materials and Testing Laboratory for evaluation testing. A large number of the pins were destroyed during removal and some were discarded during construction. The following criteria was established by department personnel for MTD's testing of the pins and defect comparisons with consulting engineer's test results: 1) modified ASTM A388 standard test, using 18 degree transducer; 2) 1/16 inch saw notches used as reference standard; 3) straight beam and angle test probes for UT of in-place pins; 4) 45 degree and 70 degree angle beam bore hole test probe for verification of pin defects.

Citation Download Citation

William J. Miller and M. K. Chaney "NDT of bridge pins on Pennsylvania Dept. of Transportation structures", Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); https://doi.org/10.1117/12.209783

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Bridges

Inspection

Ultrasonics

Nondestructive evaluation

Transducers

Visualization

Reflection

Show All Keywords

Keywords/Phrases

Search In:

Publication Years