耙吸式挖泥船耙吸管系统的受力分析及仿真研究

Analysis of Forces Acting on Suction Pipe System of Trailing Suction Hopper Dredger and Simulation Research

为预测耙吸式挖泥船远海施工时耙吸管系统在非静态环境中的多体动力学行为,要求准确分析作用在该系统上的力。详细讨论了主要作用力:在波浪补偿器作用下的缆绳拉力、耙头与海床间的土壤剪切力、作用在耙吸管上的水流阻力及由于压力差在耙头处产生的推动力等。并以耙吸式挖泥船为例,根据得出的作用力数学模型,建立了基于ADAMS动力学分析软件的仿真模型进行验证。仿真结果与实际施工情况非常吻合。

To predict the multiple dynamic behaviors of the suction pipe system of a trailing suction hoper dredger （TSHD） when it is dredging at sea under the un-quiet conditions, the forces acting on the system should be analyzed accurately. The tension force, shear forces （including pushing force, cutting force and friction force）, impulse force, hydrodynamic drag on the suction pipes, and the force resulted from the pressure difference, etc, are the main forces for detail discussion in this paper. Based on the mathematical model of these forces, a simulation model is built by using the software of ADAMS. The simulation results tally with the practical scenarios very well.