Analysis method of GINA water stop for immersed tunnel
An immersed tunnel and analysis method technology is applied in the analysis field of GINA waterstops for immersed tunnels, which can solve the problems of analysis failure to converge, calculation failure, grid distortion, etc., and achieve easy modeling, inspection, and analysis methods. Simple and convenient, accurate calculation results
Pending Publication Date: 2021-04-09
ZHUZHOU TIMES NEW MATERIALS TECH
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Problems solved by technology
When analyzing the large deformation of the rubber body on the GINA waterstop, the excessive elastic properties of the rubber material of the GINA waterstop, small thickness, large vertical compression, geometric nonlinearity, and boundary condition nonlinearity often lead to excessive meshing. Distorted deformations that prevent the analysis from converging and result in calculation failures
When the traditional grid generation method and vertical displacement loading method are used to analyze the sealing device, due to the limitations of the ordinary grid division method and the conventional vertical displacement loading method, the grid distortion is very large during the large deformation of the GINA waterstop. Serious, and the vertical loading displacement is too large, which will easily lead to the suspension of analysis and calculation
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[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0036] like Figure 2-4 As shown, wherein the GINA waterstop 3 for immersed tunnels includes a nose tip 2, a main body 4 and a bottom 5, wherein the GINA waterstop 3 is located between the pressurized tooling 1 and the embedded steel plate 6, wherein the embedded steel plate 6 passes through the bolts 7. Fixed on the base.
[0037] like figure 1 As shown, the analysis method of the GINA waterstop for immersed tunnels of the present embodiment includes the steps:
[0038] S1. Solid modeling: GINA waterstop sealing device (such as Figure 4 shown) using three-dimensional finite element modeling, and using segmented GINA waterstop finite element model; in order to reduce the calculation cost, the GINA waterstop sealing device scaled model is used for analysis;
[0039] S2. Define the material properties; in which, Shore A 40-degree, 50-degree, a...
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The invention discloses an analysis method for a GINA water stop for an immersed tube tunnel. The analysis method comprises the steps: S1, performing solid modeling; S2, defining material attributes; S3, performing finite element mesh layered division: mesh layered division is performed on the nose tip, the main body and the bottom in the thickness direction of the GINA water stop according to the hardness proportional relation of the rubber material; S4, assembling components; S5, defining constraints; S6, setting an analysis step; S7, defining boundary conditions, and loading the vertical displacement in a segmented mode; S8, establishing an analysis file and running the analysis file for analysis. The method has the advantages that the operation is simple and convenient, and the analysis result distortion caused by excessive distortion and deformation and even distortion of the grid is avoided.
Description
technical field [0001] The invention mainly relates to the technical field of large deformation rubber characteristic analysis, and in particular relates to an analysis method for a GINA waterstop for an immersed tunnel. Background technique [0002] At present, GINA waterstops used in immersed tunnels are often made of single-hardness rubber vulcanized, and the nose tip, main body and bottom of the GINA waterstop have special functions, that is, the nose tip is mainly used for compression, and the main body is mainly used for compression. It is used for compression, shearing and load-bearing, and the bottom is mainly used for load-bearing. Therefore, the use of single-hardness rubber cannot meet the unique functions of the nose tip, main body and bottom, and has certain limitations. In this case, according to the functions of the nose tip, main body and bottom of the GINA waterstop, the three matching rubbers are set, that is, the hardness layering method is used to enhance...
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IPC IPC(8): G06F30/13G06F30/23
CPCG06F30/23G06F30/13
Inventor 王伟强孔令俊罗勇欢陈彦北庾光忠黄友剑
Owner ZHUZHOU TIMES NEW MATERIALS TECH