不锈钢节点板连接件数值分析

尽管不锈钢和碳素钢的力学性能有本质区别,然而,现行规范规定不锈钢连接设计时仍基本遵循碳素钢的设计准则,仅在此基础上稍作修改。对于常见的角钢单肢与加固板连接的情况,EN1993-1-4以及SCI/欧盟不锈钢设计手册对不锈钢的设计规定,直接采用了EN1993-1-8对碳素钢净截面承载力的设计规定,且未作任何修改。对单肢与加固板采用单排螺栓连接的L型不锈钢的净截面承载力进行了研究。建立奥氏体不锈钢的数值模型,并利用现有的试验结果对其进行了验证。这些模型随后用于进行参数研究。最后,基于研究结果对L型不锈钢净截面承载力的设计方程进行了修正,并通过统计分析验证了该方程可靠性。

Numerical Study of Stainless Steel Gusset Plate Connections

Despite fundamental differences between the mechanical behaviour of stainless steel and carbon steel , design provisions for stainless steel connections in current standards essentially follow the rules for carbon steel with some limited modifications.For the common case of angle section members connected by one leg to a gusset plate , the design rules for net section capacity from EN 1993-1-8for carbon steel have been adopted for stainless steel connections in EN 1993-1-4and the SCI / Euro Inox Design Manual without any modification.In this paper , an investigation into net section rupture of stainless steel single angles connected by one leg to a gusset plate with a single row of bolts is investigated.Numerical models for austenitic stainless steel have been developed and validated against existing test results.These models are then used to perform parametric studies.Finally , based on the obtained results , revised design equations for determining the net section capacity of stainless steel angles are proposed and their reliability demonstrated by means of statistical analysis.