Research conclusions: (1)The full cross—section splice is adopted between web member and gusset，obtaining the uniform stress in the web member，strong joint stiffness and perfect anti—fatigue performance of member bar．(2)The major arc transition and penetration weld are adopted between the joints plate of cross beam flange and chord with the 1 weld quality，and the weld edge must be hammered to satisfy the requirement of anti—fatigue performance of weld．At the intersection of chord and cross beam，the chord riser extrudes 30 mm with Q370qE—Z25 rolled steel to get rid of the tearing failure of chord riser．(3)In the design of integral joints and detailed structures of other steel structures，the measures for crack and rupture controls should be taken such as major arc，gentle slope，grinding and hammering，to improve the anti—fatigue performances of integral joints and other detailed structures and satisfy the requirement of anti—fatigue performance of structures．