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紀要論文

紀要論文

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Transactions of JWRI.39(1) P.69-P.74

Repair by Heating/Pressing on Locally Buckled Steel Bridge Pier and Its Behavior under Cyclic Loads

大阪大学接合科学研究所

英語

2010-09

http://hdl.handle.net/11094/4669

A series of experiments was conducted in order to elucidate behavior under cyclic loads of a steel bridge pier of which local buckling damage was repaired with correction by heating/pressing. The steel bridge pier specimens were locally buckled by loading simulating the situation of an earthquake. The locally buckled part was corrected by heating/pressing with or without water-cooling. Some deformations were left to avoid cracking in the welds, which were residual imperfections. After that, the same loading experiments were conducted. From the results, no deterioration was confirmed in the mechanical properties of the steel even with water-cooling only if the heating temperature was kept below the A1 transformation temperature. Although ideally the local buckling deformation was repaired within an allowance of initial deflection in correction by heating/pressing, it was apparent that making the residual imperfection mode opposite to the local buckling mode was effective for ensuring the maximum load was the same level as that of the virgin pier.

Repair by Heating/Pressing on Locally Buckled Steel Bridge Pier and Its Behavior under Cyclic Loads

大阪大学接合科学研究所

英語

2010-09

Transactions of JWRI

39

1

69

74

03874508

http://hdl.handle.net/11094/4669