钢箱梁焊评报告.doc

1温州绕城高速公路立交钢箱梁制造焊接工艺评定试验总报告一.工程简介温州绕城高速公路采用120m连续钢箱梁结构全桥立面简图见图1。钢箱梁梁高为2.3m正交异性钢桥面板顶、腹、底板设纵向加劲隔板设竖向加劲钢箱梁横断面见图2。钢箱梁主要材质为Q345qD钢板总重量约1080吨。根据钢箱梁的接头形式、焊接位置等确定了22组（对接焊缝11组、坡口部分熔透角焊缝8组T形接头角焊缝3组）接头进行焊接工艺评定试验编制了焊接工艺评定试验方案并报该桥监理组和业主审批。评定试验以《公路桥涵施工技术规范》(JTG/TF50-2011)为依据并遵守设计图的相关规定。图1全桥立面简图图2钢箱梁横断面图422013二.试验材料及焊接设备1.母材用于钢箱梁制造的钢板主要材质为Q345qD钢材符合《桥梁用结构钢》（GB/T714-2008）的规定板厚范围8~35mm。焊接工艺评定试验选择板厚8、12、16、20、24、30、40mm的Q345qD钢板进行均为大生产用料。评定用试板的化学成分和力学性能见表1和表2。表1钢板化学成分(%)板厚(mm)批号材质CSiMnPSVNbTiAlCEV数据来源≤50—Q345qD≤0.18≤0.550.9~1.7≤0.025≤0.02≤0.08≤0.06≤0.03≥0.015≤0.42标准8B422967700Q345qD0.140.281.490.0170.0020.0060.020.0090.030.39质保书0.120.251.420.0130.003＜0.010.020.010.0250.37复验12B422925900Q345qD0.140.281.490.0170.0020.0060.020.0090.030.39质保书0.130.261.420.0150.002＜0.010.020.010.0230.37复验16B422925100Q345qD0.140.281.490.0170.0020.0060.020.0090.030.39质保书0.120.251.410.0140.002＜0.010.020.010.0230.37复验6C03384200Q345qD0.140.301.350.0140.004-0.02-0.0320.38质保书0.150.271.460.0070.004-0.02-0.0320.42复验20B422958200Q345qD0.130.161.420.0120.0040.030.030.010.0380.37质保书0.120.151.410.0130.0040.020.030.010.0280.36复验240182369000H1Q345qD0.150.371.410.0140.0020.0020.0020.0040.0420.39质保书0.140.361.420.0110.002＜0.01＜0.01＜0.010.0300.38复验30B422925810Q345qD0.140.281.490.0170.0020.0060.020.0090.030.39质保书0.130.251.420.0150.002＜0.010.020.010.0230.37复验40B422925700Q345qD0.140.281.490.0170.0020.0060.020.0090.030.39质保书0.130.251.430.0150.002＜0.010.020.010.0220.38复验注：CEV=C+Mn/6+（Cr+Mo+V）/5+（Ni+Cu）/15表2钢板力学性能板厚(mm)批号材质Rel(MPa)Rm(MPa)A(%)弯曲1800KV2(J)交货状态数据来源≤50—Q345qD≥34549020d=2a完好-20℃≥47—标准8B422967700Q345qD41053629.3d=2a完好575759控轧质保书41054031d=2a完好807678复验12B422925900Q345qD43554631d=2a完好256227218控轧质保书43554030d=2a完好285310280复验16B422925100Q345qD40754230.5d=2a完好211223207控轧质保书39551030d=2a完好320310315复验6C03384200Q345qD41155827d=2a完好141216191控轧质保书42557030d=2a完好182199157复验20B422958200Q345qD38951333.5d=3a完好286277265控轧质保书39049530d=3a完好310325320复验240182369000H1Q345qD39552532d=3a完好266275262控轧质保书