中文摘要：

基于凝集质量法,通过改变浮块的数量和分布位置对传统缓波型立管的结构形状进行改进。结合墨西哥湾200 m水深转塔式系泊浮式生产储油卸油装置（Floating Production Storage and Offloading,FPSO）工程实例,对改进型缓波型立管和传统型缓波型立管在极限工况下的有效张力和曲率分布进行对比分析,对转塔脱离FPSO前后2个过程、2种缓波型立管和简单钢悬链立管在触地点处的极限强度进行校核,得出极限工况下3种立管在转塔脱落过程中触地点处的动态响应特性和极限强度,为工程中立管结构形状的选取提供参考。

英文摘要：

Based on the lumped mass method,the traditional laze wave SCR configuration has been optimized by changing the quantities and distribution of buoyancy modules.With die example that turret moored Floating Production Storage and Offloading（FPSO） project has been carried out in 200 meters depth,GuK of Mexico,the effective tension and curvature of traditional laze wave SCR and shaped laze wave SCR under the extreme condition are compared.The traditional lazy wave SCR and the shaped laze wave SCR are both evaluated in terms of extreme strength of touchdown point before and after the mooring system detached from FPSO.The results are also compared with simple SCR.The dynamic response characters and extreme strength of touchdown point of three risers before and after the mooring system detached from FPSO under the extreme condition are obtained Reference is provided for choosing the configuration of risers.