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Journal of KWJS 2004;22(2):33-37.
Published online September 15, 2004.
[연구논문] 재하방법에 따른 프리플렉스빔의 역학적 거동에 관한 연구
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A Study on the Mechanical Behavior of Preflex Beam under Different Preflexion Loading Conditions
Han-Sur Bang, Sung-Min Joo, Kyu-Hun Kim, Hae-Young An
Abstract
Since the preflex beam is fabricated by welding, the pre-compressive stresses that should occur over the concrete pier are diminished by the welding residual stresses. For this reason distribution of welding residual stresses must be analyzed accurately and welding residual stresses should be relieved during the fabrication. In this study strain history, displacement of beam and re-distributed welding residual stresses by different loading conditions are measured and compared to choose more appropriate preflex condition.


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