深水缓波型刚性立管的设计方法

缓波型刚性悬链线立管由于其良好的力学性能和较低的成本，适用于深水油气田开发。本文详述了缓波型刚性悬链线立管的设计准则和设计流程，给出了分布式浮块的设计方法和等效原则，推导了等效水动力参数的计算公式。通过静力分析，得到了不同浮块的布置位置和浮力系数对立管形态、顶端张力、弯矩分布的影响；通过动力分析，得到了沿管等效应力响应的分布规律，为缓波型刚性悬链线立管的设计提供了有益的参考。

Study on the Design Method of Deepwater Steel Lazy Wave Riser

The steel lazy wave riser has been used in deep-water oil and gas field development due to its good adaption to the movement of the upper platform and economic efficiency. This paper introduces the design criterion and design flow of steel lazy wave riser. The design method and the equivalence principle of distributed buoyancy modules are given. The formulas of equivalent hydrodynamic parameters are derived in this paper. The influences of distributed buoyancy modules and the buoyancy factor on the configuration of the riser, the top tension, and the bending moment distribution are obtained. We can acquire distribution law of equivalent stress response along the pipe by dynamic analysis. This offer certain reference for the design of steel lazy wave riser.