中文摘要：

从工程实际问题出发，利用实际测量资料，通过建立近底床悬跨海管的有限元模型，计算了不同底床形状下海管最大静挠度随海流流速变化的规律，对东方1-1气田某标段海管进行了安全评估．筛选出了危险悬跨段。这一计算结果对海管的防护维护工程实践具有切实的指导意义。

英文摘要：

Submarine pipelines are major instruments for transporting oil and gas. A finite element model was established for the spanning pipelines near a seabed. The variations of pipeline deformation with current velocity was calculated according to the measurement data of Dong-Fang 1-1 Gas Field. The security assessments was analyzed. The dangerous segments of a spanning pipeline were pinpointed. This result will guide the company in preventive measures for dangerous spanning pipelines.