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海底管道悬跨段的出现将会增加管道所受载荷作用力,使管道更易发生破坏。基于海底悬跨管道的特征,简要分析了海底管道的悬跨机理,总结了悬跨段在重力、浮力、波浪力及海流力作用下的破坏机理和研究现状,并对悬跨管道研究的发展趋势进行了展望。结果表明:分析不同结构形式的海底管道在复杂荷载联合作用下的变形和破坏已成为海底管道悬跨段研究的重要发展方向;今后有必要系统地研究流场特性和地震动特性对管道周围流场和受力的影响规律,计算更复杂约束下海底悬跨管道允许悬跨长度,以及从各种判定依据着手分析比较海底管道允许悬跨长度,并得到各种判定依据的适用性范围。
The emergence of subsea pipe spans will increase the load on the pipe and make the pipe more vulnerable to damage. Based on the characteristics of subsea suspended pipeline, the mechanism of subsea pipeline spanning is briefly analyzed. The failure mechanism and research status of suspended span under the action of gravity, buoyancy, wave force and sea flow force are summarized. And the development of research on suspended pipeline Trend outlook. The results show that the analysis of the deformation and failure of submarine pipelines with different structural forms under the combined action of complicated loads has become an important development direction of submarine pipelines. In the future, it is necessary to systematically study the effects of flow field characteristics and ground motion characteristics on the flow around the pipelines Field and force, and calculate the allowable length of suspended span of the pipelines under more complex constraints, and analyze and compare the allowable length of suspended span of submarine pipelines based on various judgments, and get the scope of applicability based on various judgments.