Geogrid is a kind of main geosynthetics. Compared with other geosynthetics, it has unique performance and efficacy. It is often used as reinforcement of reinforced soil structure or reinforcement of composite materials.
Geogrids are divided into four categories: Plastic geogrids, steel plastic geogrids, glass fiber geogrids and polyester warp knitted polyester geogrids. The grid is a two-dimensional grid or three-dimensional grid grid with a certain height formed by thermoplastic or molding of high molecular polymers such as polypropylene and polyvinyl chloride. When used as civil engineering, it is called geogrid. characteristic
It has high strength, low creep and can adapt to all kinds of environmental soil. It can fully meet the use of high retaining wall in high-grade highway.
It can effectively improve the interlocking and Meshing Effect of the reinforced bearing surface, greatly enhance the bearing capacity of the foundation, effectively restrict 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 operation and embankment reinforcement, and fundamentally solves the technical problems of low strength, poor corrosion resistance and short service life caused by long-term seawater erosion of gabions made of other materials.
It can effectively avoid construction damage caused by rolling and damage by machines and tools during construction
application area
It is suitable for subgrade reinforcement and Pavement Reinforcement of various highways, railways and airports.
It is applicable to the foundation reinforcement of permanent bearing such as large parking lot and wharf freight yard.
It is suitable for slope protection of railway and highway.
Culvert Reinforcement where applicable.
It is applicable to the secondary reinforcement of the soil slope after the reinforcement of unidirectional tensile geogrid, so as to further strengthen the soil slope and prevent water and soil loss.
Reinforcement of mines and tunnels. [2]
purpose
The geogrid is applicable to the reinforcement of various dams and subgrade, slope protection and tunnel wall. Foundation reinforcement of permanent bearing such as large airport, parking lot, wharf and freight yard.
Geogrid is used to increase the bearing capacity of subgrade and prolong the service life of subgrade.
Geogrid is used to prevent the collapse or crack of Road (ground) surface and keep the ground beautiful and tidy.
The geogrid is used for convenient construction, saving time and labor, shortening the construction period and reducing the maintenance cost.
The geogrid is used to prevent cracks in the culvert.
Geogrid is used to strengthen soil slope and prevent water and soil loss.
Geogrid is used to reduce the thickness of cushion and save cost.
Geogrid is used to support the stability and greening environment of grass planting mesh pad on the slope.
application
Geogrid can effectively isolate the transmission of seismic force, and plays 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 ability of earthquake resistance and disaster reduction of roads. However, the current code for seismic design of highway and railway does not make corresponding provisions on the seismic performance of embankment strengthened with geogrid.
There are few studies on the seismic effect, reinforcement effect and action mechanism of geogrid reinforced embankment at home and abroad, the calculation and analysis method is not perfect and mature, and there is little accumulation of test data at the actual construction site [1].
