不同底质海床上自升式平台矩形沉垫的渗流力研究

Study of Rectangle Mat Seepage Force for Self-elevating Platforms Supported on Seabed with Various Bottom Matters

自升式海洋平台具有良好的移动性,可在各种不同底质的海床上作业,在不同工况下自升式平台的大尺度矩形底座和沉垫会受波浪、海流和海床渗流力的作用。基于渗流力学的基本理论,验证ABAQUS有限元软件模拟海洋平台沉垫渗流问题的可行性与精确性,探讨海床不同底质对平台沉垫底部渗流力的影响规律。

Due to its good mobility, self-elevating offshore platform is applied for the seabed with various bottom matters. Under different work conditions, for the self-elevating platform with large-scale rectangle base, its base and mat suffer wave load and current load and seabed seepage force. Based on basic seepage mechanics theory, we verify the accuracy and feasibility for simulating offshore platform mat seepage by ABAQUS finite element software, and discuss the variation law of offshore platform mat seepage force affected by the seabed with various bottom matters.