Fatigue strength of various details used for the repair of bridge members
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Fatigue strength of various details used for the repair of bridge members a report of an investigation conducted by the Engineering Experiment Station, University of Illinois, in cooperation with the Public Roads Administration [and others] by Wilbur M. Wilson

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Published by University of Illinois in [Urbana, Ill.] .
Written in English

Subjects:

  • Metals -- Fatigue.,
  • Bridges -- Maintenance and repair.

Book details:

Edition Notes

Statementby Wilbur M. Wilson and William H. Munse, under the supervision of the Committee on the Fatigue Testing (Structural) of the Welding Research Council, the Engineering Foundation.
SeriesUniversity of Illinois bulletin ;, v. 47, no. 30
ContributionsMunse, William Herman.
Classifications
LC ClassificationsTA460 .W53
The Physical Object
Pagination60 p.
Number of Pages60
ID Numbers
Open LibraryOL198297M
LC Control Numbera 50009335
OCLC/WorldCa13811972

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The objects of the tests are twofold: 1) to determine the relative fatigue strength of various devices that have been used or proposed to strengthen or repair old bridge members in order to eliminate those methods that involve details with a low fatigue strength, and 2) to determine quantitatively the fatigue strength of the members that have. bettor understanding of bridge fatigue behavior and to substantial changes in fatigue pro­ Ylsion of bridge design specifications. This booklet has been prepared as a to the general problem of bridge falJ~ue and to a is! the designer with the selection and design of bridge details that offer superior falJ~ue strength. Fatigue strength of various details used for the repair of bridge members. By Wilbur M. Wilson and William Herman Munse. Get PDF (10 MB) Abstract. Cover ed as part of an investigation conducted by the Engineering Experiment Station, University of Illinois at .   In , the dismantling of a ninety-one-year-old railway bridge presented an opportunity to perform tests on four of its cross girders. The goal of the tests was to determine the fatigue resistance of riveted mild steel details and the effectiveness of different repair techniques.

The design value of the fatigue strength is thus Δσ Rsk /γ S,fat and the NA to BS EN says that the value of the partial factor γ S,fat (applied to reinforcement) is the same as that for strength and thus γ S,fat = Example of fatigue assessment for a 3-span bridge. AASHTO fatigue specifications classify commonly used steel bridge details into fatigue Categories A, B, B’, C, C’, D, E and E’ based on their fatigue characteristics. The “S-N curves”, where S is the stress range of a constant amplitude cyclic loading and N is the number of cycles to a fatigue failure, define a lower-bound fatigue. Advanced Composites in Bridge Construction and Repair is a technical guide for engineering professionals requiring an understanding of the use of composite materials in bridge construction. Show less Advanced composite materials for bridge structures are recognized as a promising alternative to conventional construction materials such as steel. it is also possible to retrofit or upgrade the fatigue strength of existing steel bridges with poor details. Fatigue crack repair techniques for weld toe surface cracks were developed to repair and extend the life of cracked welded steel bridge details. Figure 4. Yellow Mill Pond Bridge: Fatigue .

These stresses can cause unexpected fatigue cracking. This section discusses these stresses and the methods used to repair the fatigue cracks that form under secondary stresses. out-of-Plane Distortion Differential displacements between girders and lateral bracing elements introduce fatigue to the web-gap regions of the girders. fatigue damage cases which had been reported for various bridge types and details were collected. A A total of more than damage cases were studied and categorized according to the type of detail. The primary factors involved were the ADTT level, the number of lanes available, and the bridge span length. WIM (weigh-in-motion) data with a high-resolution time stamp of seconds from four different states and for different bridge configurations were used to study the effect of multiple trucks on various bridge structures. For the diaphragm-to-rib weld which is the typical vulnerable fatigue detail, S-N curve with fatigue strength of 90 MPa at NC=2 million cycles can be used to assess fatigue properties of diaphragm.