初位移对БУ—40钻机井架承载能力的影响

Influence of Initial Displacement on the Load Capacity of Guyed Masts

—40钻机井架安装后,用拉绷绳扶正井口,将使井架天车台处产生初位移。经理论计算分析表明,井架的承载能力随井架初位移的增加而降低,在基础无不均匀沉陷情况下,拉绷绳找正井口时,最大初位移极限是前后不允许超过300mm,左右不允许超过280mm。

While being lined up with the center of the well by guylines, an errected mast will be led to an initial displacement at the water table. Design calculation shows that the load capacity of the mast decreases with the increase of initial displacement and, in case there is no unequal settlement of foundation, the limit of initial displacement should be 300mm forward orbackward and 280mm leftward or rightward.