대형 강구조블록의 최소 용접변형의 용접순서 결정 및 변형예측

다국어 초록 (Multilingual Abstract)

In order to minimize the effect of weld deformation on the preceding equipment during Pre-erection joint welding, the optimal welding sequence by unit load method was derived. And the weld deformation was predicted by the equivalent load method considering the constraint according to the derived welding sequence. For this purpose, the restraint coefficient was derived by conducting experiments and elastic FEM analysis on various welded specimens in order to derive the restraint of butt welds. In addition, the welding sequence that can minimize the welding deformation was derived by calculating the constraint by the unit load method in steel block structure. According to the derived welding procedure, the welding deformation near the preceding equipment during the pre-erection joint welding was predicted within 4 mm by using the equivalent load method considering the constraint. Specifically, the deformation in the lower part with the block supports occurred about 2 mm, and the deformation of 3~4 mm occurred at the upper part of block.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 용접부 등가하중 모델링
• 3. 구속계수 및 등가하중법 적용방법
• 4. 해석대상 모델
• 5. 해석 결과
• 6. 결론
• Reference

참고문헌 (Reference)

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6 K.Satoh, "Handbook of Welding Structures"

7 J.-U. Park, "Effects of mechanical constraints on angular distortion of welding joints" Informa UK Limited 7 (7): 232-239, 2013

8 Jeong-Ung Park, "Effect of external load on angular distortion in fillet welding" Elsevier BV 42 : 403-410, 2012

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10 Masubuchi K., "Analysis of Welded Structures" Pergamon Press 235-327, 1980

11 Seo, S.I., "A Study on the Prediction of Deformations of Welded Ship Structures" 15 (15): 73-81, 1999