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Our company is the largest integrated manufacturer, mainly produces business: one-way plastic geogrid, two-way plastic geogrid, fiberglass geogrid, warp geogrid, steel geogrid, Geocell mine gate, multi-directional geogrid convex node geogrid, three-dimensional geotextile mat, high strength geonet, geocell, engineering fiber, plastic blind ditch, soft water pipe, staple fiber geotextiles, filament geotextile , geomembrane, waterproof blanket, drainage boards and other engineering materials. Factory direct sales, price concessions, quality assurance, honest work, is your trusted partner of choice! Abstract: The foundation reinforcement geogrid is very common, current design specifications generally grille design requirements tensile strength as a mechanical index in road, rail. In fact, the factors affecting the reinforcing effect of a variety of domestic has conducted a number of experiments to study the effects of different reinforced layers, the thickness of the reinforced cushion, but because of the production process for the grille, mesh shape the physical properties of the mesh size, shape, etc. rib reinforcement effect caused by differences in the different experiments, the country is still little research. Shallow situ load plate test, study the performance of different types of bearing capacity and deformation geogrid reinforced cushion. Tests showed that different materials, different production processes, physical and mechanical properties of different geogrid reinforced cushion its bearing capacity and deformation properties mused different, there are differences in stress diffusion effect, high strength which does not strengthen the grid Reinforced effect. Tricot polyester geogrid (polyester grid), choose polyester with polyester fiber as raw material. Using directional structure warp, weft fabric between each other without bending state to yarn intersections with high strength filament *** combine to form a solid combination of points, give full play to its mechanical properties, tricot polyester geogrid (polyester grid) with high tensile strength, elongation is small, tear strength strength, small differences in vertical and horizontal strength, resistance to UV aging, wear resistance, corrosion resistance, light weight, and soil or gravel embedded in the lock and strong, to enhance soil shear and reinforcement to improve the integrity of the soil and load force, with significant effect. Polyester tricot polyester geogrid high-strength polyester industrial yarn, weaving through the mesh fabric warp direction, the PVC coating process into a geogrid. Processed and used in soft soil roadbed, dams and other projects reinforced enhanced to improve the quality of the project to reduce the project cost. Tricot polyester geogrid Features: 1, 2 has a very high tensile strength, elongation 3, corrosion resistance, anti-aging 4, and the base material has a strong bite force 5, light weight, there is drainage through knitting polyester geogrid use: 1, tricot polyester geogrid is used for a variety of soft soil subgrade reinforcement road highway, railway, municipal roads and other enhancements, can effectively improve the strength of subgrade, delaying reflection cracks in the road. 2, warp polyester geogrid Water Project dams, channel reinforced, isolation, reinforcement of soft soil foundation, to enhance its defense capabilities, improve the bearing capacity and stability. 3, warp polyester geogrid for embankment reinforcement, retaining wall reinforcement, enhance the overall strength, roads, railways, water and other soft enhanced reinforcement. 4, warp polyester geogrid for railway ballast protection: As the train vibration and wind and rain, resulting in the loss of ballast, with geogrid wrapped ballast to prevent the loss of ballast, improve the stability of the roadbed; 5, tricot polyester geogrid retaining wall for the railroad: geogrid reinforced retaining wall on the edge of the railway, for example, in the railway station and dock with the station, prolong life, reduce maintenance costs; 6, tricot polyester Geocell gate for reinforced retaining wall: vertical retaining wall next to the road and paved geogrid can increase the carrying capacity of retaining wall; 7, abutments ground subsidence is generally very easy to down, jumping phenomenon occurs in the bridge By laying the foundation sets geogrid can increase capacity, solid abutments. Tricot polyester geogrid construction method: the grill on the construction of the road should be paved asphalt layer of coarse stone, the original road are advised flat, after finishing, trim and clean for the construction, with the need to use specific nail ordinary grill be fixed grille lap joints laterally more than 5cm, 10cm higher than vertical laying of asphalt treated geogrid layers of asphalt to minimize oil spill, with a self-adhesive geogrid construction, the rubber tire roller moderately rolling after to asphalt paving and compaction without specific nail fixation. Geogrid 1 Introduction In recent years, geogrid in highway, railway embankment application areas, more and more used as a reinforcing grid foundation, increase capacity, reduce the role of cushion thickness and other aspects of the obvious. Many laboratory tests also explored the impact of reinforced layers, cushion thickness, strength and other factors on soil reinforced effect. In the current design of a variety of specifications, the foundation reinforcement geogrid selection, or in tensile strength as the only indicator, without considering the different production processes, different materials, different physical and mechanical properties of the geogrid reinforcing effect, resulting in foundation reinforcement geogrid with increasing tensile strength. In fact, the countries have already begun to study the effect of factors reinforced the US Corps of Engineers in the 1990s for ⑴⑵ light aircraft under the Flexible Pavement Base grill a lot of research, come to affect some of the main reinforcement effect factors, the intensity of the grid is not among them. Table 1 was derived factors reinforced. Table 1 factors reinforced the effect of (US Corps of Engineers 1992) Comparison Program Performance Comparison geogrid project assessment thicker rib thickness, the better the bigger the better stiffness stiffness better than square or rectangular shape rounded or curved mesh size and fill soil aggregate size, the better the harder node strength relevant circular or square shape hardness must have a minimum intensity of the grid nodes secant modulus (ASTM D 4595) shall have a minimum requirement secant modulus. Stability optimal value unknown (plane torsional stiffness) Thomas i 金力博 soil (Dr Thomas Kinney) of "grille mesh plane twisted stable" Experimental studies on the beneficial effects of the grille to improve road traffic performance. Under certain minimum mesh torsional torque effect secant modulus can better reflect the performance of the Dutch grid traffic information center and foundation engineering report prepared CROW157 Design Guide Holland road structure, its sixth *** and eleventh *** specifically for geosynthetics, the production process classification reinforced material and presented its reinforced ⑶ performance curve for each category. Seen from the curve, as compared with other types of grid, reinforced Tensile grille relatively good. The new three-Tensar company in 2007 in the European market to geogrid reinforced in order to study the effect of this grid, the British Building Research Center BRE (Building Research Establishment) produced a special three meters in diameter large Capacity Test Equipment effects of different types of grill, reinforced layers of different, different soil types on the effect of reinforced ⑷. From the model test results, three to grill because of its unique geometry, superior results reinforced foundations. By loading plate test for different types of geogrid reinforced cushion conducted experimental study site, select the most commonly used type of stretch, warp-type, two-way grille and welding on the market, as well as the company's new patented product Tensar - stretch type three to four materials grille, grille compare different types of reinforced cushion bearing capacity and deformation characteristics, and load dispersion characteristics. Analysis when geogrid reinforcement when foundation on which lay the gravel layer will pass through the mesh and geogrid embedded in the mesh holes. Only when the lateral deformation of the gravel layer is well constrained, the whole reinforced cushion will form a stable overall structure. Then the mechanism of reinforcement can not be used "tensioned membrane" theory to explain, but the role of interlocking mesh. The impact of interlocking action of factors, the actual factors that column in Table 1. Effect of bar effect. 1) from the joint strength, the type of node and the mesh grid is stretched simultaneously formed in production, as a whole; welded grid with warp grid nodes are longitudinal, transverse reinforced belts formed after then twice by welding, braided molding process, which is bound to be smaller than the tensile strength of the node type grille. The node strong enough, it will cause the plane torsional stiffness mesh is small, not well constrained lateral deformation gravel. This should result in welding, warp grid stiffened performance as the main reason for tension-type grille. 2) From the mesh size, the welded mesh grille near maximum 100mm, many gravel accumulate hole in the net, only to rely on their own role mutual squeeze between the gravel, reinforced effect is not obvious; and warp minimum grid mesh, less than 15mm, more than 97% of the gravel particle size greater than this value, which makes the gravel can not squeeze into cell fitted, can only "float" on top of the grid, the effect of a large reinforced discounted. The two stretch mesh grille are just adapt and gravel particle size, reinforced natural effect will be more pronounced. 3) From the shape of the mesh, the Tensar grid three-TX170 due to its unique triangular mesh structure, than the same stretch of SS30 grille reinforced effective, proven triangular mesh of interlocking gravel stronger, better performance reinforced cushion. Conclusions (1) geogrid reinforcement of foundation bearing capacity has improved to varying degrees. The advantages of punching stretch geogrid type is more obvious, especially Tensar three to grill, because of its unique triangular mesh rendering, especially the degree of improvement, compared with unreinforced program, the ultimate bearing capacity can be increased 35% or so. (2) In addition to the performance of reinforced cushion reflected in the above capacity, the key point is to look at the foundation soil disturbance. Three-section grille, settling mainly in the gravel layer and sand settlement only less than 30% of the total settlement, indicating minimal disturbance of the sand. The warp grille and grille section welding, sand sedimentation are great, especially the welding grille section, under load, the foundation has a great disturbance. (3) The calculation of reinforced cushion deformation modulus obtained by the formula modulus, three to remain the most dominant grille. The main effect of stress (4) sand the top surface diffusion in 45-degree angle range, which uses the design of a 45-degree angle to calculate the diffusion reinforced cushion match. (5) The minimum tensile strength of a three-way grid, the data analysis, the optimal performance are reinforced, reinforced prove little effect and strength of the relationship, this is the result of the US Army Corps of Engineers and CROW157⑶ ⑴⑵ agreement. Therefore, the selection on the grill when the designer can not simply tensile strength as the only indicator of design. Geogrid market booming beyond many of us by surprise, this 1990s new building materials from abroad, and today is widely used in a variety of road embankment and high strength requirements of civil engineering. With the growing market demand, production companies have sprung up, the intensity of competition lead to various quality levels and prices appear as buyers how to choose? Stick with quality to create a market, not with their peers to engage in a price war, the price war because the final outcome is straight harms, but customers eventually become victims. Price war is bound to affect the quality of products, in order to reduce costs, will be used to reduce raw material cost saving standard way, a direct result of product appearance, strength in all aspects of the decline. Geogrid price, depending on the material and the strength of the size of the distinction, the more expensive the higher the intensity of the price, the factory has not been a strong test of the product, the person in charge of the manufacturers are not manufactured or were reduced after the factory model. Geogrid quality determines the quality of the project, geogrid quality is only one aspect, such as the quality of the filler used in the construction will affect the play the role of geogrid. Geogrid by the force of the product is divided into two-way and one-way geogrid geogrid, divided by the product of the material composition of glass fiber geogrid, geogrid synthetic fibers, polypropylene, ethylene geogrid, plastic composite geogrid. In recent years, ethylene polypropylene unigeogrid old road subgrade construction in more general use, it can effectively prevent uneven roadbed settlement, reflective cracking longitudinal cracks and old pavement. PE / PP geogrid is extruded from the polymer by two-way stretching, tensile strength, suitable for all kinds of soil, its performance is better than the unstretched Geo network, is Currently one of the best reinforced reinforcement material. The grid can be widely used in highways, municipal roads, railways, runways and other subgrade enhancement, highways, railways and rivers and the coast of reinforced earth retaining wall of reinforced engineering; strengthening the dykes of river and sea; mine reinforcement and orchards many areas of vegetable, livestock, site fencing, with good mechanical and successful cooperation through the world's first coal producer Shenhua Group, the reinforcement of such products in the field of mine has been vigorously promoting the application. Geogrid more widely. Geogrid from the 1980s into China, a few years ago on the engineering base to find someone asked: "? Geogrid know what you"? "A lot of people shook their heads. With geogrid production scale and growth, improve innovation geogrid production technology, geogrid large number of applications have been built road, rail among some wetlands, swamps and ports and other civil engineering works deal more interested in using geogrid. Because the role and characteristics of geogrid, can greatly reduce the workload of civil engineering, improve work efficiency and quality of civil engineering, geogrid products increasingly popular