Balance Fatigue Design of Cast Steel Nodes in Tubular Steel Structures

Table 3

Results of five defects.

Defect	Crack path	Wall thickness 𝑡 (mm)	𝛼0 (mm)	𝛼^′0 (mm)	𝛼0/𝑡 (%)
①	𝛼=0^∘	45	27.6	15.4	61
②	𝛼=90^∘	35	23.3	7.6	67
③	𝛼=180^∘	800	221.3	29.5	28
④	𝛼=0^∘	86	37	21.6	43
⑤	𝛼=180^∘	45	17.9	10.8	40