Based on first-order reliability method (FORM)l,approaches to the estimations of strength and fatigue reliabilities of boxlike main girders of overhead travelling cranes are presented.

• 本文提出了基于一阶可靠性方法的桥式起重机箱形主梁静强度和疲劳强度可靠度的估算方法,并给出了相应的算例。