摘要
本文依据Ｍｉｎｅｒ线性累积损伤理论、起重机载荷谱及钢结构疲劳设计规范，提出了起重机金属结构疲劳寿命的计算方法。应用此方法，在对起重机金属结构应力实测的基础上，对上海铁路分局１１台铁路龙门起重机主梁的疲劳寿命进行了计算。
According to Miner’s Linear accumulational damage criterion, loading chart of the crane and fatigue design standard of the steel structure,the analytic method of fatigue life of the main beams is raised.On the basis of this method and the stress measures of the crane beams,the fatigue life of the beams of 11 railway grantry cranes are computed.
