摘要
对大型起重机进行随机地震分析时,考虑了局部动力效应影响及42.5 m标高处的加速度谱值变化。推导出两者有关的计算公式,并编制了相应的计算程序。通过对工程实例的计算,探讨了局部动力效应对起重机寿命预测的影响,得出了一些有益的结论。
Stochastic-seismic analysis of a large lifting equipment is carried out considering the influence of local dynamic effect the change of acceleration spectrum value at 42.5 m height of elevation. The related calculating formulas are deducted and the relevant calculating procedure is worked out. The influence of local dynamic effect to life prediction of lifting equipment is investigated through calculation to engineering question, some beneficial conclusions are put forward.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2004年第8期174-177,共4页
Journal of Mechanical Engineering
基金
国家自然科学基金(基金10142008)
山东省教委基金(2003L01)资助项目。
关键词
起重机
随机地震
局部动力效应
加速度谱值
寿命预测
Large lifting equipment Stochastic seism Local dynamic effect Acceleration spectrum value Life prediction
