HDPE Geocell
The core principle of geocell is the "honeycomb three-dimensional restraint system", which functions through the following mechanisms:
1. Lateral Constraint: The cell walls exert strong lateral support on loose materials such as soil and gravel filled inside, preventing particle lateral displacement and "solidifying" the loose medium into an integral rigid slab.
2. Load Distribution: It can effectively distribute concentrated loads evenly over a larger area of the foundation, reducing localized stress concentration, settlement and deformation.
3. Shear Resistance Enhancement: The friction and interlocking action between the geocell and the filler improve the shear strength and overall stability of the soil.
HDPE geocell is a three-dimensional honeycomb grid structure made of high-density polyethylene (HDPE) sheets with high strength, welded by ultrasonic welding. It is widely used in civil engineering projects such as roads, slopes, and embankments, and has excellent reinforcement, protection and load-bearing performance. Its core advantage lies in significantly improving the overall stability and load-bearing capacity of the filler through a three-dimensional constraint mechanism.
I. Working Principle: Three-Dimensional Constraint Effect
The core principle of geocell is the "honeycomb three-dimensional restraint system", which functions through the following mechanisms:
1. Lateral Constraint: The cell walls exert strong lateral support on loose materials such as soil and gravel filled inside, preventing particle lateral displacement and "solidifying" the loose medium into an integral rigid slab.
2. Load Distribution: It can effectively distribute concentrated loads evenly over a larger area of the foundation, reducing localized stress concentration, settlement and deformation.
3. Shear Resistance Enhancement: The friction and interlocking action between the geocell and the filler improve the shear strength and overall stability of the soil.
II. Main Application Scenarios
1. Road Subgrade Reinforcement
· Suitable for treating adverse foundations such as soft soil, collapsible loess, and permafrost.
· Can reduce the thickness of the base layer by 30%–50%, lowering engineering costs and extending service life.
· Effectively alleviates the "bridge abutment bump" phenomenon, enhancing driving comfort and safety.
2. Slope Ecological Protection
· Used for protecting steep slopes of highways, railways, rivers, and other areas.
· After filling with planting soil, grass can be planted for greening, achieving dual goals of engineering protection and ecological restoration.
· Can stabilize the surface soil and prevent landslides and soil erosion even under rainfall erosion.
3. Temporary Construction Access Roads
· Quickly lay heavy machinery access roads in marshes, tidal flats, and soft ground.
· Easy to construct, local materials can be used, and the construction period can be shortened significantly.
4. Applications in Special Geological Conditions
· Saline Soil and Expansive Soil Areas: Highly corrosion-resistant, suitable for high-corrosivity soil environments.
· Permafrost Areas: Helps maintain stable ground temperature and prevents subgrade damage caused by freeze-thaw cycles.
III. Brief Construction Process
1. Base Surface Levelling: Clear debris and ensure the laying surface is level.
2. Unfolding and Fixing: Stretch out the folded geocell and fix its edges and nodes with anchor rods or steel nails.
3. Tensioning and Shaping: Ensure the geocell is fully stretched and tightened to avoid looseness.
4. Layered Filling: Fill in sand, gravel or planting soil layer by layer, with each layer controlled at 20–30cm in thickness, and compact it.
5. Surface Treatment: Carry out vegetation planting, asphalt paving or other surface construction according to the purpose.
