为研究奥氏体型S30408不锈钢角焊缝连接接头的承载性能,对6个正面角焊缝连接试件和5个侧面角焊缝连接试件进行了拉伸试验,测得焊缝连接试件在拉伸作用下的极限荷载,以及焊缝强度、焊缝随荷载的变形情况,并对焊缝的破坏状态进行了观察。试验结果表明:正面角焊缝连接接头焊缝断裂面呈底部垂直于芯板表面而上部接近30°斜截面的不规则撕裂状,其抗拉强度平均值742 MPa,焊缝平均变形量为2.875 mm。侧面角焊缝连接接头焊缝断裂面较为平整,接近45°理论值,其剪切强度平均为506 MPa,焊缝平均变形量为4.387 mm。正面角焊缝连接试件焊缝抗拉强度为侧面角焊缝连接试件剪切强度的1.47倍。正面角焊缝和侧面角焊缝连接试件承载力试验值均高于CECS 410:2015《不锈钢结构技术规程》和欧洲规范Eurocode 3的设计值,CECS 410:2015规程中对于正面角焊缝和侧面角焊缝连接试件承载力设计值的规定过于保守;欧洲规范Eurocode 3对正面角焊缝连接试件承载力设计值的规定也较为保守,而对侧面角焊缝连接试件承载力设计值的规定较为合理。 In order to study the bearing capacity of austenitic S30408 ​​stainless steel fillet weld joint, the tensile test was carried out on the six positive fillet weld joint specimens and the five side fillet weld joint specimens. The weld joint test specimen The ultimate load under tension, as well as the strength of the weld, the deformation of the weld with the load, and the failure state of the weld were observed. The experimental results show that the fracture surface of the weld of the front fillet weld is irregularly tearing at the bottom perpendicular to the surface of the core plate and the upper part is close to the inclined surface of 30 °, the average tensile strength is 742 MPa and the average deformation of the weld is 2.875 mm. The fracture surface of flank fillet weld joints is relatively flat, close to the theoretical value of 45 °. The average shear strength is 506 MPa and the average weld deformation is 4.387 mm. The tensile strength of the weld of the front fillet weld was 1.47 times the shear strength of the side fillet weld. The test values ​​of the load-bearing capacity of the frontal fillet weld and the side fillet weld are both higher than those of CECS 410: 2015 Technical Specification for Stainless Steel Structures and Eurocode 3, The design value of the bearing capacity of the side fillet weld is too conservative. The European Code Eurocode 3 is also conservative in the design values ​​of the bearing capacity of the fillet welds, while the design of the bearing capacity of the fillet welds The value of the more reasonable.