半潜驳装载高瘦沉箱下潜中的船舶稳性研究

Research on stability of semi-submersible barge during submergence with tall and slender caissons on board

深水重力式码头所采用的高瘦沉箱在利用半潜驳出运安装的过程中,由于高瘦沉箱的重心相对较高,宽度较窄,容易影响船舶的稳定性。通过理论计算船舶初稳性高度并校核船舶的稳性,再结合初稳性高度计算原理及计算案例分析,总结影响半潜驳下潜稳性的各种因素,提出改善半潜驳装载沉箱下潜稳性的方法。有效确保高瘦沉箱出运安装的船舶稳性,保障船机设备和人员的施工安全。

By using a semi-submersible barge for transportation and installation of tall and thin caissons for a deep-water gravity wharf,the caissons have a relatively high center of gravity and narrow width,which is prone to affect the stability of barge.By theoretically calculating the initial metacentric height of the barge and checking its stability and further based on the calculation principle of the initial metacentric height and analysis of calculation cases,various factors affecting the submerging stability of the semi-submersible barge are summarized and measures are proposed to improve the submerging stability of the semi-submersible barge with caissons on board,which can effectively ensure the stability of the barge when tall and thin caissons are shipped for installation and ensure the safety of the barge,machinery,equipment and personnel during construction.