In view of offshore drilling practice,a method has been derived for calculating the critical load on riser under the combined action of wellhead concentrated load and dead weight uniform load by assuming the drilling riser to be a pipe member with one end fixed and other end hinged and based on the principle of energy conservation and theory of elastic stability.
从海上钻井实际出发,假定隔水导管为一端嵌固、一端铰支约束的典型受力杆件,根据能量守恒准则和弹性稳定性理论,推导出了在有端部集中载荷及自重均布载荷联合作用下其临界载荷的计算方法,并对不变刚度结构和变刚度结构两种不同组合形式的隔水导管的临界载荷进行了实例计算与分析。