The geocell is a type of high density polyethylene composed of reinforced ( HDPE） A three-dimensional mesh cell structure formed by strong welding or ultrasonic welding of the sheet material. It is flexible and retractable for transportation Stack,During construction, it can be tensioned into a network, and after filling loose materials such as soil, gravel, and concrete, it can form a structure with strong lateral restriction and large stiffness.
Constraint mechanism
1. Utilizing the lateral restraint of the geocell The lateral restraint of the geocell can be achieved by increasing friction with the material outside the cell and by constraining the filling material inside the cell. Under the action of the lateral restraining force of the geocell, it also produces upward friction force on the filling material, thus increasing its own tensile strength. This effect can reduce the change transmission of foundation displacement and reduce the settlement of half-filled and half-excavated subgrade.
2. Using the net bag effect of geocell Under the action of the lateral restraint force of geocell, the net bag effect produced by the filling material can make the load distribution more uniform. This effect can reduce the pressure on the foundation, improve the bearing capacity of the cushion, and finally achieve the purpose of alleviating the uneven settlement of the foundation.
3. The friction of the geocell is mainly produced on the contact surface between the filling material and the geocell, so that the vertical load is transferred to the geocell and then transferred out by it. In this way, the pressure on the foundation can be greatly reduced, the bearing capacity of the cushion can be improved, and the purpose of alleviating the uneven settlement of the foundation can be achieved.
Conclusion
To sum up, the restraint capacity of geocell grid is mainly reflected in the use of its lateral restraint force, net bag effect and friction to strengthen the foundation and improve the bearing capacity and stability of subgrade. Because of its excellent mechanical properties and environmental adaptability, this material has been widely used in road engineering, railway engineering, water conservancy engineering and other fields.
Post time: Jan-08-2025