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采用动力悬浮系统将管道悬浮在海面下一定深度,用以代替海底敷设,是一种先进的施工技术。它较之海底敷设具有容易安装,不需要开挖管沟;维护方便、节省投资;避免在铺设过程中 产生过大的弯曲应力等优点。本文着重介绍了这一悬浮管道系统的结构原理,提出了优化设计的计算方法,编制了电算程序,用以对在波浪条件下管道的动力性能优化,从而使管道相对稳定地悬浮在海水中,将激振引起的动态应力限制在允许的范围内。通过对系统的L取三个不同数值实例运算,结果表明经过优化运算选出的设计参数,将管道悬浮在海水中,在技术上是可行的,方案是经济合理的。
The use of dynamic suspension system will be suspended in the pipeline under the sea a certain depth, to replace the laying of the sea, is an advanced construction technology. It is easier to install than the sea floor installation, without the need for excavation ditches; easy maintenance, saving investment; to avoid excessive bending stress in the laying process and so on. This paper focuses on the structural principle of this suspended pipeline system, puts forward the calculation method of optimal design, and compiles a computer program to optimize the dynamic performance of the pipeline under wave conditions so that the pipeline can be relatively stably suspended in seawater , The dynamic stress caused by vibration limits within the allowable range. By taking three different numerical examples for the system L, the results show that it is technically feasible to suspend the pipeline in the seawater through the design parameters selected by the optimization calculation, and the scheme is economically reasonable.