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The Finite Element Analysis on the Seepage of Dock and the Stress of Dock Floor

Author: SunRuiRui
Tutor: YuanXinMing
School: Yangzhou University
Course: Hydraulic Structure Engineering
Keywords: Dock Backplane Finite Element Seepage Cambridge model Beam on elastic foundation
CLC: U673.33
Type: Master's thesis
Year: 2009
Downloads: 76
Quote: 1
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Abstract

Built in dry dock at the riverside, the surrounding water table and the river level was high, with drainage decompression system to reduce groundwater table, the the dock bottom plate with the surrounding shore inevitably produce a larger difference between the water level and the formation of large hydraulic gradient soil seepage role of uplift pressure on the base plate; produce local structural weight will be less than the uplift pressure on the arch of the underground structure, bottom slab, and the overall instability accident. Therefore, the analysis of the dock the seepage and dock chamber floor has a very important engineering significance. Based on this, this paper focuses on the dock percolation and seepage under the dock chamber floor for finite element analysis, the main contents are: according to the similarity of the temperature field and seepage field principle, the use of the temperature field in the ADINA finite element software modules to simulate seepage problems The different role of head of the dock upstream finite element seepage analysis. The results show that, drains and impervious wall set greatly reduces the penetration head in the dock under the floor, but the dock the soleplate be larger role in the uplift pressure; the various soil permeability coefficient different, lead to the penetration rate is not the same, larger coefficient of permeability, penetration speed; around the filter layer settings gutter flow velocity at the outlet of the filter layer; seepage discharge can be obtained according to the flow velocity, and provide the basis for the choice of drainage. The use of finite element software ADINA the Cambridge model simulation backplane surrounding soil body, on the dock empty dock ship, an empty dock the ship both cases different thickness dock chamber floor for finite element structural analysis. The results showed that the different thickness of the base plate outer load is the same trend of the case of the same displacement; floor in the case of its own weight is less than the osmotic pressure will be bent upwardly; the displacement of the base plate, and the stress applied to the ship load at maximum. In this paper, a homogeneous earth glycerol seepage test software to calculate the seepage results compared to see from the result of the comparison between the two there is an error, but to meet the accuracy requirements, and thus verify the the software temperature field calculation seepage reliable; elastic foundation beam method for computing the the dock chamber floor normal stress value with software simulation results of the comparison, the results of the two methods of calculation is more consistent, which proves that the software architecture module reliability of the results. Research method and research has important reference value to the research and application of similar engineering problems.

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