大型海洋结构物横向滑移装船技术

Lateral Sliding Shipment of Large Marine Structures

滑移装船是海上导管架平台、上部组块等大型海洋工程结构物施工过程的重要环节。为了研究大型海洋结构物横向滑移装船的可行性及关键点,降低装船施工成本及对建造场地的适用性要求,提高装船效率,保证结构物及运输船安全,指导装船作业安全开展。应用MOSES软件,对国内某海上风电场升压站上部组块滑移装船过程进行模拟计算,将上船过程划分为若干步,以每步的分界点作为结构物滑移作业和船舶调载操作的控制点,对运输船的浮态、稳性、船体强度、调载能力以及潮汐等多重因素进行综合协调以减小误差使装船各步骤平稳过渡,从而分析大型海洋工程结构物滑移装船的可行性及关键点。从模拟结果可确定结构物在装船过程中,运输船能够实现平衡的最小浮态,并结合潮汐变化确定最终装船计划,通过各步骤的调载模拟为船方提供理论调载依据。相关分析和结论对于大型海洋工程结构物滑移装船作业提供理论指导,具有一定参考意义。

Sliding loading is an important link in the construction process of large offshore structures such as offshore jacket platform and upper block.In order to study the feasibility and key points of lateral slip loading of large Marine structures,reduce the cost of loading construction and the suitability of the construction site,improve the loading efficiency,ensure the safety of structures and transport vessels,and guide the safe development of loading operations.To simulate the sliding loading process of the upper module of a domestic offshore wind farm booster station applied.The loading process is divided into several steps,and the boundary point of each step is used as the control point for the sliding operation of the structure and the ship's load adjustment operation.Multiple factors such as the floating state,stability,hull strength,load adjustment capacity,and tide of the transport ship are comprehensively coordinated to reduce errors and ensure a smooth transition of each loading step.The feasibility and key points of sliding loading of large marine engineering structures are analyzed.The simulation results can determine the minimum floating state that the transport ship can achieve balance during the loading process of the structure,and determine the final loading plan based on tidal changes.Through the load adjustment simulation of each step,theoretical load adjustment basis is provided for the ship owner.The relevant analysis and conclusion provide theoretical guidance for the sliding loading operation of large offshore structures and have certain reference significance.