Joint classification according to AISC

Dieser Artikel ist auch verfügbar in:

Joints are classified according to joint stiffness to:

  • Rigid – joints with insignificant change of original angles between members,
  • Semirigid – joints which are assumed to have the capacity to furnish a dependable and known degree of flexural restraint,
  • Simple – joints which do not develop bending moments.

Joints are classified according to the commentary in AISC 360-16, Cl. B3.4.

  • Rigid – \( \frac{S_{j,ini} L_b}{E I_b} \ge 20 \)
  • Semirigid – \( 2 < \frac{S_{j,ini} L_b}{E I_b} < 20 \)
  • Simple – \( \frac{S_{j,ini} L_b}{E I_b} \le 2 \)

where:

  • Sj,ini – initial stiffness of the joint; the joint stiffness is assumed linear up to the 2/3 of Mj,Rd
  • Lb – theoretical length of the analyzed member
  • E – Young's modulus of elasticity
  • Ib – moment of inertia of the analyzed member
  • Mj,Rd – joint design moment resistance

Geben Sie uns eine Rückmeldung. War dieser Artikel hilfreich?

Verwandte Artikel

Check of components according to AISC

Testen Sie IDEA StatiCa kostenlos

Laden Sie eine kostenlose Testversion von IDEA StatiCa