拉压杆受力原理在海管吊装施工中的应用研究

Hoisting Analysis of Submarine Pipelines Based on the Principle of Tension and Compression Rods

海底管道可能受渔业影响而造成水下失效,海管段的替换方案可快速完成海管修复。为节省修复船天,减少水下连接点,增长海管长度是比较常见的做法。针对一种较长的水泥配重海管,设计一种利用拉压受力组合的吊装方案,以SACS软件为基础,结合API RP 2A规范对该方案中海管吊装时的结构强度进行计算分析,并对比拉压杆工况及常规吊装工况的计算结果,验证了该吊装方案的可行性,对今后的同类施工具有指导意义。

Submarine pipelines may cause underwater failure due to the influence of fisheries.The replacement scheme of submarine pipeline sections can quickly complete the repair of submarine pipelines.In order to save repairing ship days and reduce underwater connection points,it is a common practice to increase the length of submarine pipelines.Aiming at a long cement counterweight subsea pipeline,a hoisting plan using a combination of tension and compression is designed.Based on the SACS software,combined with the API RP 2A specification,the structural strength of the subsea pipeline during the hoisting of the plan is calculated and analyzed.Comparing the calculation results of tension and compression rod working conditions and conventional hoisting conditions,the feasibility of the hoisting scheme is verified,and it has guiding significance for similar constructions in the future.