* 1 1 2 1 1. 266033 2. 266071 DOI 10. 7617 /j. issn. 1000-8993. 2013. 08. 026 EFFECT OF WELD BETWEEN SIDE-PLATE AND BEAM FLANGE ON THE BRITTLE FRACTURE OF SIDE-PLATE REINFORCED JOINT Liu Yun 1 Wang Yan 1 Song Yongjie 2 Mao Chengchao 1 1. School of Civil Engineering Qingdao Technological University Qingdao 266033 China 2. Qingdao Ruidu Design Group Co. Ltd Qingdao 266071 China Abstract Taking side-plate reinforced joint as the research object this study simulated transient welding process for the connecting weld between side-plate and beam flange. Based on above research the effects of residual stress at the joint of the side plate and beam flange on plastic equivalent strain index and rupture index were analyzed according to the two models either with or without welding residual stress. The results show that welding residual stress affects obviously the brittle fracture possibility of the joint and the position where a brittle fracture can easily occur is also found out. Keywords welding residual stress side-plate reinforced joint plastic equivalent strain index rupture index brittle fracture 1 1 2 1 Table 1 Geometric parameters of joint models 1-5 /mm SPB - 1-9 50 220 SPB - 2-9 40 170 6-7 SPC - 1-9 50 220 SPC - 2-9 40 170 ANSYS 8-9 3 SPB - 1 1 500 s 1 SPB SPC HN300 150 6. 5 9 HW250 250 9 14 * 2012M510982 201102040 JBLG15 1978 qingdaoliuyun@ 163. com 2013-04 - 25 120 Industrial Construction Vol. 43,No. 8,2013 工业建筑 2013 年第 43 卷第 8 期
Rupture Index 12 4 a SPB C - 1 b SPB C - 2 1 Fig. 1 Model dimension 1 2 Fig. 2 Position of welding seam 8 13 13-5 Fig. 3 3 1 500 s Temperature distribution of beam bottom flange at 1 500 s 1 2 3 4 5 Fig. 5 Sketch of paths 4 Pa Fig. 4 Residual stress distribution 2. 1 等效塑性应变指数分布 6 SPB SPB - 1 SPB - 2 6a 2 3 6b 10-11 Plastic Equivalent Strain Index 侧板与梁翼缘连接焊缝对节点断裂性能的影响 刘芸, 等 121
a b c - - - 6 Fig. 6 Distribution of plastic equivalent strain index U 6 8 20 40 13 SPB - 1 180 SPB - 2 150 7b 0 U 6c 20 10 40 8 6b 13 14 6a 7c 6c 20 6b 7b 14 7b 7c 2. 2 开裂指数分布 7 SPB 2. 3 有无焊接残余应力的对比 7a SPB SPC 122 工业建筑 2013 年第 43 卷第 8 期
a b c - - - Fig. 7 7 Distribution of rupture index 8 9 8 Ω 9 5 mm 0. 6 9 SPB SPC 6 8 a b c 1 SPB - 1 2 SPC - 1 3 SPB - 2 4 SPC - 2 Fig. 8 8 Contrast of rupture index with and without welding residual stress path 1 侧板与梁翼缘连接焊缝对节点断裂性能的影响 刘芸, 等 123
Fig. 9 a b c 1 SPB - 1 2 SPC - 1 3 SPB - 2 4 SPC - 2 9 Contrast of rupture index with and without welding residual stress path 4 SPC - 1 2 SPB - 1 2 ANSYS 90 mm 1. 3 J. 2010 40 S1 524-529. 1 J 4. D. 2012. 5 2 SPB SPC 6 2007. 7 J 15. 2. J. 2013 28 1 13-18. 3.. 2007 28 3 1-7. -. T J. 2011 28 10 209-215.. D... 2009 41 12 10-8. D. 3 2011. 9 D. 2012. 97 4 6 9. 124 工业建筑 2013 年第 43 卷第 8 期
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