Stress Concentration of Geomembrane at Anchoring Ditch
There are two functions between flexible geomembrane and its relatively rigid foundation and protective layer, namely, the relative fraction of the interface and the coordinate deformation in the same direction. The external environment such as pond water storage and icing can act indirectly on the HDPE geomembrane factory price impermeable layer through the protective layer. The geomembrane at the anchorage trench is prone to stress concentration. It is recommended to follow the principle of “pull and continue” in the design and construction of the anchorage trench.
After the construction of an anti-seepage structure and slope protection, the water storage function of the evaporation pond must be exerted. In view of the difficulty in the simulation of fluid-solid interaction, it is not necessary for the purpose of the study. At this stage of the simulation HDPE geomembrane for sale, the hydrostatic pressure after water storage is applied to the slope protection in the form of mechanical boundary conditions to simulate the effect of water storage in the evaporation pool
After water storage in winter, ice sheets with a certain thickness will form on the water surface, and the lateral expansion of the ice sheets will exert a certain force on the bank slope. This stage mainly analyzes the effect of frost heave force on the anti-seepage structure. Similarly, in this simulation, the solid model of ice is not directly established HDPE geomembrane manufacturers, but the calculated ice pressure and ice layer thickness are applied to the slope at the corresponding position in the form of mechanical boundary conditions.
After the anti-seepage layer and slope protection are laid, the maximum displacement is mainly located in the middle and upper part of the slope protection, and the shear strain increment is concentrated at the top of the interface between the anti-seepage structure and the slope protection. All these indicate that after the slope, protection is laid, under the influence of its own weight, the slope protection will slide down along the interface between the slope protection and the anti-seepage structure high quality HDPE geomembrane, and the middle and upper parts of the slope protection will be deformed the most.
The maximum deformation of the anti-seepage geomembrane is 1.3 cm, which is located in the middle and upper part of the geomembrane, while the deformation of the anchor trench sidewall is very small, and the maximum tensile stress is the largest. This indicates that the anti-seepage geomembrane is anchored after being anchored by the anchoring ditch, resulting in tensile deformation in the upper and middle parts of the slope, and the high quality aquaculture geomembrane is anchored and produces a certain stress concentration.
The maximum tensile stress of the anti-seepage geomembrane after anchoring is located on the sidewall of the anchoring groove, which is about 2.34 kPa, which is far lower than the yield strength of the geomembrane.