Theoretical And Experimental Analysis Of Wind Resistance Ability Of Offshore Deepwater Port Mechanical Group

With long coastline and numerous ports, Chinese shipping industry is facing good opportunities for development at present. In the meantime, the insufficient of large-scale deepwater port and loading and unloading machinery have appeared increasingly, which caused large ships'long-time mooring in the port; therefore, it is imperative to build deepwater berths in China for catching the opportunity for development and attracting large regular ship companies. Generally speaking, the location of deep-water ports are far away from the mainland coastline, which tend to suffer more wind attacks and near the center of typhoon when some typhoons coming. Furthermore, the features of port machinery present the trendy to become huge-size, and the whole machine's centre-of-gravity is becoming higher and higher, all of which make an increase of potential accident.Concerning the offshore deepwater port's environmental characteristics of considerable climatic variation and strong winds all the year round, this thesis aimed at the presentation of wind-resistance strategy which suitable for large-scale mechanical group in deepwater port by calculation, analysis and numerical simulation of crane's wind loads and its flow distribution. The contents and major results of this article are as follows:(1) Taking the super-banama type quay container crane as an example, its wind loads in typical working conditions were calculated. According to the calculation and relevant safety analysis, the conclusion that boom should keep flat before typhoon was gained.(2) According to crane's constructional features and its geographical environment, the mathematical and physical model were developed based on the hydromechanics principles; this paper also discussed the computing strategy of multiple loading cases with one set of mesh generation, and analysed the boundary conditions of this numerical simulation.(3) Through the numerical analysis of the flow phenomenon around the quay-side container crane by means of numerical wind tunnel, the distribution of pressure and flow field were gained and the distribution of the resultant force and moment force of the crane were accumulated totally. Through the analysis of the experiment results, the potential problem of the largest wind loads which was ignored by conventional caculation method was found, and some improvement suggestions were given.(4) A simulation experiment on the state of interactions and reciprocal influence of large-scale mechanical group's interior equipment under intensive wind was carried out, the wind loads and mutual influence of three cranes among different space were gained, and the group wind resistance strategy was proposed. The result of this analysis provided theoretical bases and technological support for safety production of offshore deepwater port loading and unloading machinery group.