The geocell is a three-dimensional mesh cell structure made of reinforced HDPE sheet material, which is welded with high strength. It is generally welded by ultrasonic pin welding. Due to engineering needs, some are perforated in the membrane sheet.
Characteristics
1.It has the ability to expand and contract freely, and can be shrunk and folded for transportation. It can be tensioned into a net shape during construction and filled with loose materials such as soil, gravel and concrete to form a structural body with strong lateral restriction and large rigidity.
2. Light, abrasion resistant, chemically stable, resistant to light and oxygen ageing, acid and alkali, suitable for different soil and desert conditions.
3.Higher lateral restraint and anti-slip, anti-deformation, effective enhancement of the bearing capacity of the roadbed and dispersion of the load.
4.Changing the geometry of geocell height and welding distance can meet different engineering needs.
5.Self-expanding, small transport volume; convenient coupling, fast construction speed.
Engineering applications
1. Dealing with half-filled half-excavated roadbed
In the ground natural slope steeper than 1:5 slope construction embankment, embankment base should be dug steps, the width of the steps shall not be less than 1M, phased construction or reconstruction of highway widening, the new and old roadbed fill slope of the interface, should be excavated steps, high-grade highway step width is generally 2M, in each layer of the steps on the horizontal surface of the geocell, the use of geocell own elevation side limit reinforcement effect, better solve the problem of uneven subsidence.
2, wind and sand area roadbed
Due to the low roadbed and heavy load-bearing professional requirements of the sandy area roadbed construction, the use of geocells can play a side-limiting role on the loose fill, within a limited height to ensure that the roadbed has high stiffness and strength to withstand the load stress of large vehicles.
3. Reinforcement of the back of the platform
The use of geocells can better achieve the purpose of reinforcement, geocells and fillers can generate sufficient friction between the roadbed and the structure to effectively reduce the uneven settlement between the roadbed and the structure, and ultimately to effectively alleviate the "bridge platform jump" disease on the bridge deck of the early impact damage.
4, multi-year frozen soil area roadbed
In the perennial frost area construction of fill roadbed, should reach the minimum fill height, in order to prevent the occurrence of slurry or cause the upper limit of the frozen layer down, resulting in excessive settlement of the embankment. The unique face reinforcement effect and effective implementation of the overall lateral limit of the geocell can ensure, to the greatest extent possible, a minimum fill height in certain special locations and give the fill a high quality of strength and stiffness.
5. Treatment of wet-submerged loess roadbeds
For the highway and a highway through the wet sink loess and compressive loess section, or high embankment of the foundation allowable bearing capacity is lower than the vehicle collaborative load and embankment self-weight pressure, but also according to the bearing capacity requirements of the roadbed treatment, then the superiority of geocell is undoubtedly.
6. Saline soil, swelling soil
The reinforcement measures are applied to the shoulders and slopes of highways and primary roads built with saline soils and swelling soils. The effect of the cell is one of the most excellent among all reinforcement materials, and it has excellent corrosion resistance, which can fully meet the requirements of building highways in saline soils and swelling soils.
