提出一种确定石油钻井井架结构屈曲荷载的动态评估方法。
In this paper, a dynamic evaluative method is provided to define the buckling load of oilfield derrick.
与承载能力降低的同时，井架结构的应变参数也发生相应的变化。
Along with the lowering of the load capacity of the derrick, the strain parameters of the structure change accordingly.
计算实例表明，井架上作用的载荷与井架结构频率的平方三线性关系。
Example of calcural shows the load on the derrick is linear with square of the structural frequency of the derrick.
应用推荐