Handling Technology Of The Heavy Cargo Wharf For Xiangjiaba Hydropower Station And Finite Element Analysis Of The Steel Truss Carriage

In this paper, the current common handling technology of heavy cargo wharf was introduced. 3000t-class Ro-Ro ship and 1000t-class barge of handling process, which were adopted in Xiangjiaba, were expounded in detail. Operating period of 3000t Ro-Ro ship, the lifting way of heavy cargoes, the project investment of wharf, the impact of downriver wharfs, ships entering and leaving conditions, navigation condition, flood control, technical adaptability, ability to adapt the water level, construction period, the volume of harbor basin excavation, etc. were selected to estimate the two options. Finally, the second option was identified as the recommendatory handling technology of heavy cargo wharf in Xiangjiaba, which could meet the needs of the safe and efficient transit.According to the loading and different types of ships, with the mechanical method, the feasibility analysis of steel truss carriage was classified three working conditions. The conditions, which corresponded to the Ro-Ro, pushing or hauling, and crawler crane, were heavy cargo entering the steel truss carriage from the end, heavy cargo entering from the side, crawler crane operating on the carriage. The results showed that the strength of the steel truss carriage met the use requirements. Besides, the check computations of steel girder, the tractive ability of fairleader, rail foundation of loading-bearing demonstrated the rationality and safety of the project.Finite element method was the most effective way to analyse the holistic stress and deformation of the steel truss carriage. The most unfavorable loads and the most dangerous parts could be determined expediently, though ANSYS numerical calculation. Three types of working conditions were defined. The third condition was considered the most unfavorable, after the stress and deformation calculation.Through the comparison analysis of setting stiffening plates or not, the conclusion was drawn that were effective on developing the holistic structural intensity, rigidity, reducing stress, and controlling deformation.This paper analysed the reason that the results were conservative, and put forward the optimal program that the stiffening plates should be arranged alternately. The optimal model and computation analysis showed that the alternate arrangement of the plates meet the requirement of the safety and economy. The stress and deformation were under the allowable value of standard code. The program was proved feasible. Besides, the nonlienear relationship between the height of stiffening plates and the deflection of beams was showed.