CAUSE IDENTIFICATION OF FATIGUE CRACKS IN PLATE GIRDER-ON-STEEL FRAME PIER BRIDGE

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概要

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• The purpose of this study is to identify the causes of fatigue cracks found in a plate girder-on-steel frame pier bridge. The complexities of this type of structure make the stress configurations near crack locations complicated. A three-dimensional finite element model, incorporating both superstructure and substructure was created to study the stress development mechanisms near crack locations. Field tests were carried out to investigate structural behaviors, such as conditions of bridge bearings, and to validate the finite element modeling. The results indicate that fatigue cracks are caused by dysfunctional bridge bearings, poor structural details and deformations of some members.

• 公益社団法人 土木学会の論文

著者

• Pengphon Satorn

  Graduate Student Dept. Of Civil Eng. Tokyo Institute Of Technology

• ONO Shuichi

  Graduate student, Dept. of Civil Eng., Tokyo Institute of Technology

• SHIMOZATO Tetsuhiro

  Maintenance and Facilities Dept., Metropolitan Expressway Public Corporation

• MIKI Chitoshi

  Dept. of Civil Eng., Tokyo Institute of Technology

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• RADIATION CHARACTERISTICS OF ULTRASONIC TIP ECHO AND ITS APPLICATION TO DETECT FATIGUE CRACK CLOSURE IN WELDING RESIDUAL STRESS FIELDS
• FATIGUE PERFORMANCE OF COMPOSITE TUBULAR K-JOINTS FOR TRUSS TYPE BRIDGE

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