Development of criteria for fatigue repairs in bridge girders damaged by out-of-plane distortion /
A study of flame-cut holes is also conducted. Experimental
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | A study of flame-cut holes is also conducted. Experimental alternatives to drilling holes are developed and recommended. analyses. The findings are then used to derive general by drilling holes at crack tips, or by completely removing a concentrations result, affecting the fatigue life of the connection of a plate girder subjected to a linear bending cutting. In the process of repairing fatigue cracks, stress data indicates that flame-cut holes are at worst Category D details based on AASHTO's fatigue criteria. Results of diaphragm connection details. Due to the widespread nature distortion at unstiffened web gaps caused by poorly designed element model predicts the behavior of both repaired and experienced fatigue cracking due to repetitive out-of-plane guidelines for the use of drilled holes. In addition, safer laboratory testing and finite element analyses are used in necessary. necessary. The results of the finite element analyses and Numerous highway bridge girders across the United States have of a longitudinal web-to-flange by hole-drilling is of the problem, effective and economical means of repair and orientation on stress concentrations using finite element plane distortion is removed, such repair and retrofit portion of densely cracked web plate material by flame- retrofit need to be developed. -Once the source of out-of- spacing and orientation of multiple drilled hole spacing and stress to determine if repair by drilling holes is really structure. Currently, no standardized criteria exist for the techniques involve the arrest of fatigue crack growth, either the development of flame-cut hole guidelines. A finite The first portion of the study analyzes the effects of their correlation with experimental data indicate that arrest unrepaired cracks along the longitudinal web-to-flange use of hole-drilling and flame-cutting as repair techniques. |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | xii, 70 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |