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The role of geogrid engineering
Features
It has high strength, low creep, and can adapt to various environmental soils, which can fully meet the use of tall retaining walls in high-grade highways.
It can effectively improve the interlocking and occlusal effect of the reinforced bearing surface, greatly enhance the bearing capacity of the foundation, effectively restrain the lateral displacement of the soil, and enhance the stability of the foundation.
Compared with the traditional grid, it has the characteristics of high strength, strong bearing capacity, corrosion resistance, anti-aging, large friction coefficient, uniform holes, convenient construction and long service life.
It is more suitable for deep-sea operations and reinforcement of embankments, and fundamentally solves the technical problems of low strength, poor corrosion resistance and short service life caused by long-term erosion of seawater for gabions made of other materials.
It can effectively avoid the construction damage caused by being crushed and damaged by the machine during the construction process [2]
Application field
It is suitable for roadbed reinforcement pavement reinforcement of various roads, railways and airports.
It is suitable for foundation reinforcement of permanent load such as large parking lots and dock yards.
It is suitable for slope protection of railways and highways.
Applicable culvert reinforcement.
It is suitable for the secondary reinforcement of the soil slope reinforced by the one-way tensile geogrid to further strengthen the soil slope and prevent soil erosion.
Mine, tunnel reinforcement. [3]
use
Geogrid is suitable for various embankments and roadbed reinforcement, slope protection, and tunnel wall reinforcement. Large-scale airports, parking lots, dock freight yards and other permanent bearing foundation reinforcement.
Geogrid is used to increase the bearing capacity of the road (ground) foundation and prolong the service life of the road (ground) foundation.
Geogrid is used to prevent the road (ground) from collapsing or cracking, and keep the ground beautiful and tidy.
Geogrid is used for convenient construction, saving time and effort, shortening the construction period and reducing maintenance costs.
Geogrids are used to prevent cracks in culverts.
Geogrids are used to enhance soil slopes and prevent soil erosion.
Geogrid is used to reduce the thickness of the cushion and save the cost.
The geogrid is used to support the stable greening environment of the grass-planting mesh pad on the slope.
Geogrid can effectively block the transmission of seismic force and play an important role in enhancing the seismic stiffness, strength and stability of embankment.
The successful application of geogrid is expected to reduce various embankment diseases common in high-intensity earthquake areas and improve the earthquake resistance and disaster reduction ability of roads. However, the current seismic design codes for highways and railways have not made corresponding provisions on the seismic performance of geogrid-reinforced embankments.
At home and abroad, there are few studies on the seismic effect, reinforcement effect and action mechanism of geogrid-reinforced embankment, the calculation and analysis methods are not perfect and mature, and the accumulation of actual site test data is not much.
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Construction process of geotextile
1. The old pavement should be cleaned of dust, loose particles and sundries, and the surface should be kept dry. The sharp and abrupt parts of the road surface shall be leveled; for the seriously damaged and broken parts of the road surface, the broken parts shall be removed and repaired with asphalt concrete. For the pavement with serious cracks or ruts, a layer of 1-2cm leveling layer should be filled.
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The paving surface of the geogrid should be relatively flat. After the paving layer has passed the acceptance, in order to prevent the longitudinal skew phenomenon, first draw a white line or hanging line on the paving layer according to the width, and then start the paving, and then use iron Fix the end of the grille with nails (8 nails per meter width, fixed at an even distance), after fixing the end of the grille, use a paving machine to slowly pull the grille forward, and carry out manual labor for every 10 meters long. Tighten and straighten once until one roll of grille is finished, and then lay the next roll. The operation is the same as before. After laying one roll, use a 6T-10T road roller to roll it from the starting point to the forward direction.
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The role of geogrid engineering
It has high strength, low creep, and can adapt to various environmental soils, which can fully meet the use of tall retaining walls in high-grade highways. It can effectively improve the interlocking and occlusal effect of the reinforced bearing surface, greatly enhance the bearing capacity of the foundation, effectively restrain the lateral displacement of the soil, and enhance the stability of the foundation.
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1) Reinforcement and drainage of road and railway subgrade shoulders; 2) Drainage of tunnels, subway underground passages, and underground freight yards; 3) Soil and water conservation for hillside and side slope development;
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Product characteristics of flexible permeable pipes
1. The material of the soft permeable pipe 1) High carbon steel wire: phosphoric acid anti-rust treatment, PVC coating to prevent acid and alkali corrosion, unique steel wire spiral skeleton to ensure the smooth surface of the pipe wall and withstand pressure. 2) Non-woven filter layer: ensure effective filtration and prevent sediment from entering the tube. 3) Synthetic polyester fiber: The warp yarn is made of high-strength T-DOLON yarn or nylon yarn covered with PVC, and the weft yarn is made of special fiber, which has sufficient tensile strength.
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