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hdpe plastic geocell construction process

Views: 1     Author: Site Editor     Publish Time: 2023-07-08      Origin: Site

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  Geocell construction

1. Tools

1. Each group of 2-3hammers

2. Each group of pay-off ropes 50-100 meters(for pay-off)

3.Anchor (12-14mm) U-shaped nails 1 y/piece

2. Geocell paving accessories, how to use the guide photo

1.Limit cap

2.Anchor rod or U-shaped nail: the length is twice the height of the sheet+ 30cm

Schematic diagram of construction use


3. Schematic diagram of construction and use

Slope protection construction work

Roadbed reinforcement construction

4. Geocell Construction Requirements

Geocell laying, connection, fixing, and backfiling are important construction steps. The correct geocell is explained in detail from these aspects The construction method fundamentally simplifies the construction steps, improves the construction speed, and makes the construction more rapid, convenient and labor-saving.

1.Laying of geocells: Laying is generally carried out on slopes and roadbeds. The laying of the slope needs to be laid evenly from top to bottom, from the top of the slope to the bottom of the slope. That is, the honeycomb grid should be fully expanded and tightened to keep it in a complete honeycomb grid state, so as to givefull play to the fixing effect of the sheet on the soil and vegetation;

(2) The laying of the roadbed is on a horizontal surface. It should be laid according to the force direction of the roadbed to avoid uneven laying of the

roadbed, such as soft soil potholes and uneven gravel roadbeds, because the geocell should be fully The premise of playing the role of strength is to ensure that the laying layer has good flatness. In addition, it is strictly forbidden to drive vehicles on the subgrade after the geocell is laid and before the soilis backfilled.

The cell grid without backfill soil has a limited bearing capacity and cannot withstand the passage of heavy-duty vehicles. The cell grid must be fully opened and backfilled. After the soil is sufficient, the vehicle can be driven.

2. The connection of the geocell: the key part of the connection - the lock. After the geocell is produced, it is compressed and bundled to save space

and facilitate storage and transportation. It only needs to be unfolded during construction. The area of each finished geocell after unfolding is more than ten to tens of square meters, so how to connect each geocell? Here, locks (also known as buckles, connecting buckles) are needed for connecion. After the locks are

connected to the cells, they form an integral reinforcement layer. Note: A complete and effective connection can form an overall continuous reinforcement

layer. If there are no locks and other accessories for connection, plastic cable ties and iron wires can also be used for binding connection, but the strength of

these two materials is relatively low, and they are easy to be pulled and broken during soil spraying and landfiling, resulting in the laying of geocells. loss of

continuity. Therefore, it is still recommended that the majority of construction units use the regular connection accessories provided by the manufacturer: buckles for connection.

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3. Fixing of geocells: U-shaped steel bars and wooden piles. As

mentioned earlier, the cells are connected by locks, so how can the overall reinforcement layer of the cells be fixed on the slope and the roadbed? Here you need to use U-shaped steel bars and wooden piles. The U-shaped steel bar is buckled upside down on the cell sheet, inserted verically into the ground, and made to

contact with the top of the cell sheet by knocking to ensure that the depth of the soil is 20cm-30cm, and the wooden pile is vertically inserted into the cell body, and then inserted Soil can be. In addition, we generally use U-shaped steel bars to fix on slopes, and mostly use wooden piles to fix on road subgrades. U-shaped nails anchored at the main stress point L-shaped nails are often used and processed by themselves at 12/14m. Scattered points on the slope can be fixed with low-

standard medium 6/8mm threaded steel

bars or wooden piles. 4. Backfilling of geocells: full backfilling is the key to exerting the strength of the sheet.

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When backfilling soil on the slope, each cell unit should be fully filled with soil without leaving gaps, and the backfill soil should be at the same height as the cell. Backfilling stones on the subgrade should also ensure that the height of the filler is the same as the height of the cell sheet, which is also to allow the filler to have a fixing effect on the cell sheet, so that it can still maintain the complete expansion of the honeycomb shape in the later stage of construction.

Five, laying steps note:

1. The hole forming position of the anchor rod must be above the diagonal corner of the cell to ensure that the weight of the cell can be transfered to the anchor rod.

2. 2. Cells must be completely connected to each other to form a piece and connect as a whole.

3. In order to prevent water flow from scouring the cells, build a waterproof ridge an the top of the slope to prevent rainwater from pouring into the cells from the top of the slope to destroy the cells and unblock the drainage, and dredge it in time.

Six the basic principle of geocell

The reason why geocells are effective and have attracted the attention of the engineering community should start from their basic principles. Foreign literatures cal it 'a three- dimensional cellular system, which can significanty improve the pertormance of general fillmaterial erosion control insect hosts and applications over a wide range." lits the key principle is threedimensional.We al know that when a cardives on the desert, two deep ruts wil be formed,the pressed par wil sink deeply, and the sides othe rut wil buge. If the vehicle

behind continues to advance along the rut, the sunken part will sink further, and the raised part will rise further, until the raised part rubs against the chassis of the vehicle, and the sunken rut buries most of the wheels, making it impossible to move forward. The reason for this is that when the external load acts on the surface of the foundation, according to the Planel theory and the Taylor theory, it can be known that under the action of the concentrated load, the active zone 1 is compressed and sinks, and the force is decomposed and

transmitted to the transition zone on both sides. Zone 2, the transition zone 2 is transmitted to the passive zone 3,and the passive zone wil be deformed and raised without any deformation.





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