关于起重机在起吊时动载荷的确定,已有不少文献报导。虽然如此,这一课题仍不能认为已完美地解决,因为目前的一些试验结果尚未在实用计算规范里有所反映。作者认为,目前所做的试验不可能包括所有可能的情况,用以对实用计算进行简化。因而在计算规范里,仍然应用经验算法,并不考虑过程的物理意义。 On the lifting crane in the determination of dynamic load, there have been many reports. Nevertheless, this subject still can not be considered as a perfect solution, as some of the current trial results have not yet been reflected in the pragmatic specifications. The author believes that the current experiment can not include all possible situations, to simplify the practical calculation. Thus in the calculation of norms, the empirical algorithm is still applied, does not consider the physical meaning of the process.