Steel plastic geogrid is an innovative product in China, with complete models of anti-corrosion and anti-aging reinforced steel plastic geogrid, and it has won the broad market with its plastic tensile capacity and the solid performance of steel. Steel plastic geogrid is often used in water conservancy projects. This kind of material can enhance the stability and strengthen the dam, especially steel plastic geogrid used in dam reinforcement and protection.

The tensile force of steel plastic geogrid is the tensile force per linear meter, which is the tensile force of each steel bar × the number of steel bars per linear meter. We need to understand a national standard conversion formula: 1 kg can form a load-bearing tension of 10 N (equivalent to 1 kg = 10 N), then 40 kn (40000 n) steel plastic geogrid can bear 4000 kg of weight per linear meter, that is, 4 tons of weight.

Steel plastic geogrid used in dam reinforcement and protection: the main dam of the reservoir is a sand shell dam with wide core wall, which has quality problems caused by dam materials. During the reinforcement of the reservoir, the reservoir management office conducted the shell material test and dam body stability study of the reinforced earth rock dam, and carried out the research on the key issues in the reinforcement of the earth rock dam, including the optimization of the dam material, the reasonable selection of the reinforcement rate of the geogrid, the comprehensive anti-seepage measures, etc, The mechanical characteristics of geogrid engineering, the calculation of reinforcement ratio, the determination of reinforcement layers, the length of reinforcement materials and other key technical problems in the design of geogrid reinforcement in the dam body are studied in detail, and have been tested and applied with good results.

Steel plastic geogrid used in dam reinforcement and protection: in order to adjust the straightness of steel plastic geogrid without dead angle, before filling a layer of soil and rolling, the grid shall be tensioned again by manpower or machinery with uniform strength to make the grid in a straight-line stress state in the soil. Selection of filler: the filler shall be selected according to the requirements of the research invention. It has been proved that, except hard soil, swamp soil, living * *, chalk and diatomite, they can be used as fillers, but the mechanical properties of gravelly soil and sandy soil are stable and less affected by water content, so they should be selected preferentially. The particle size of filler shall not exceed 15cm, and the grading of filler shall be controlled to ensure the compaction weight. Spreading and compaction of filler: when laying and positioning the grid, all filler shall be replaced in time, and the exposure time shall not exceed 48 hours. The flow operation method of backfilling during laying can also be used. The filler shall be spread out at both ends, the grid shall be fixed, and then the grid shall be pushed to the middle. The order of scrolling is from side to center. During rolling, the roller shall not directly contact the reinforcement. It is strictly prohibited for vehicles to drive on the reinforcement which is not firmly fastened to prevent the reinforcement from misplacement. This is also the key to the success or failure of reinforced soil engineering waterproof and drainage measures: reinforced soil engineering must do a good job of drainage treatment inside and outside the wall, must do a good job of foot protection and scour prevention, soil should be set up with filtration and drainage measures, if necessary, should be set up with geotextile, infiltration pipe (or filter ditch), drainage can not be dredged and blocked, to show no hidden danger. The above five points are the concrete construction methods of steel plastic composite geogrid laying.

Steel plastic geogrid used in dam reinforcement and protection: common high-pressure jet grouting methods are: single pipe method, double pipe method and three pipe method, which can be flexibly applied according to specific requirements and soil conditions. Splitting grouting technology of geogrid: splitting grouting is the grouting technology of earth dam which has been applied since 1970s. It can be used to block the loopholes, cracks and cut off the weak layer to achieve the purpose of dam seepage control. The split grouting holes shall be designed and customized one by one according to the groove section in different parts. If the dam body is usually rolling and has some shortcomings, it can be designed and customized into 2 or 3 rows of holes. Especially in the curved section and bank slope section, the spacing of small holes shall be appropriately reduced, holes shall be arranged according to the specific situation, and grouting method shall be adopted flexibly. This is the general process of reinforcing dam body with polyester grid. Then what is the application of steel plastic geogrid in the construction? It is suitable for the reinforcement of reinforced earth retaining wall, abutment, slope protection and subgrade to enhance the bearing capacity of soft soil foundation and resist the formation of flour. Because of its high tensile strength and small deformation, it is widely used in the treatment of soft soil foundation and subgrade differential settlement, especially the treatment of new and old subgrade differential settlement. Steel plastic geogrid is the material to deal with the uneven settlement of subgrade. Steel plastic geogrid is used to reinforce soft soil foundation. The network structure is beneficial to the drainage of soft soil foundation. The seepage in the soft soil under the embankment filling load promotes the bearing capacity of the consolidated soft soil foundation to increase, and the soft soil foundation and the steel plastic geogrid work together. The application of steel plastic geogrid in buildings is reduced to the label here, because when the vehicle is loaded, the vertical stress embedded in the side of the locking system increases, so the vertical force of the base tends to be uniform.