PREFLEX BEAM 제작시의 용접부 역학적 특성에 관한 연구

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 17; no. 6; pp. 65 - 71
• Main Authors: 방한서(HAN-SUR BANG), 주성민(SUNG-MIN JOO), 안해영(HAE-YOUNG AN)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2003
• Subjects: 해양공학; Pre-compressive Stress 초기압축응력; Finite Element Method 유한요소법; Preflex Beam 프리플렉스빔; Welding Residual Stress 용접잔류응력
• ISSN: 1225-0767; 2287-6715

Since the preflex beam is fabricated through welding, the pre-compressive stresses that should occur over the concrete pier are diminished by the welding residual stresses. Therefore welding residual stresses must be relieved during the fabrication. Therefore, the analysis and examination of the accurate welding residual stress distribution characteristics are necessary. In this study, accurate distribution of welding residual stress of the preflex beam is analyzed by the finite element method, using 2 dimensional and 3 dimensional elements. Further, the thermo-mechanical behavior of the preflex beam is also studied. After the finite element analysis, real distribution of welding residual stress is measured using the sectioning method, and then is compared with the simulation results. The distribution of welding residual stress by finite analysis agreed well with the experimental results.