In winter, due to the high groundwater level in ground soil, frost heave occurs under negative temperature conditions, resulting in vertical frost heaving force and tangential frost heave force. The thickness of skid plate and stilling basin floor is relatively thin, and it can resist deformation. Poor. As a result, cracks occur in the middle of the skid plate and the stilling basin, which are consistent with the actual observations. It can be seen that the occurrence and development of cracks are due to the frost heave of foundation soil during dry deposition of Baiyangdian Lake. Only by ensuring that the foundation soil under the resistance skateboard is not frost heaved, can we solve the crack problem of the resistance skateboard fundamentally.
Thermal Insulation Antifreeze design There are two methods commonly used to prevent frost heave. One method is to use non-frost heave materials to replace the frost heaving foundation. Another method is to use insulation materials or use water layer to prevent frost heave on the building foundation. After comprehensive comparison, it is the best method to use insulation materials as frost heaving measures. Its construction is simple, many domestic water conservancy projects have been successfully applied, and the insulation effect is good.
The insulation and reinforcement design of the resistance skateboard includes part of the contents: first, the cracks on the resistance skateboard are processed, and then the foundation soil under the resistance skateboard is grouted. Finally, the anti-leakage skateboard is designed for thermal insulation and antifreeze. Crack treatment In order to prevent the further development of cracks and the occurrence of slurry during foundation grouting, the crack treatment measures on the resistance skateboard are “4†grooves centered on the cracks along the cracks, brush loose particles, clean and then in the tank Epoxy mortar was filled and repaired, and the appearance was smooth, dense and smooth, and it remained flat with the original concrete.
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