CN108330763B - Geotechnical grid - Google Patents
Geotechnical grid Download PDFInfo
- Publication number
- CN108330763B CN108330763B CN201810305692.9A CN201810305692A CN108330763B CN 108330763 B CN108330763 B CN 108330763B CN 201810305692 A CN201810305692 A CN 201810305692A CN 108330763 B CN108330763 B CN 108330763B
- Authority
- CN
- China
- Prior art keywords
- cushion block
- cell
- cell sheets
- middle cushion
- sheets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010008 shearing Methods 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims 2
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 101100495270 Caenorhabditis elegans cdc-26 gene Proteins 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
Abstract
The invention discloses a geocell, which comprises a cell sheet for forming a netlike cell and a plurality of node parts for connecting two adjacent cell sheets, wherein the node parts comprise: the middle cushion block is clamped between the two cell sheets and used for increasing friction force; a fastener for clamping the two cell sheets and the intermediate pad; the outer cushion block is arranged on the outer side of the cell sheet and is used for being in fit contact with the extrusion surface of the fastener. Because the middle cushion block is arranged between the two cell sheets, the middle cushion block is used for increasing friction force, and two sides of the middle cushion block are respectively in fit contact with the two cell sheets, the friction area between the two cell sheets is increased, the friction force of the two cell sheets at the node part is increased, and the stripping resistance and the shearing resistance of the cell sheets at the node part are improved.
Description
Technical Field
The invention relates to the technical field of roadbed protection devices, in particular to a geocell.
Background
For the roadbed bearing for a long time, due to the pressure and vibration action of the load, the pressed area of the roadbed gradually sinks, and the two sides of the pressed area can be raised high, namely the roadbed material is displaced transversely to the two sides of the section of the roadbed, so that the bearing capacity of the roadbed is greatly reduced.
In the prior art, a geocell is generally adopted to improve the shearing resistance and friction of the roadbed material so as to reduce or delay the roadbed material from transversely moving under the pressure or vibration action of the load. However, in the prior art, two cellular sheets are directly connected at a connection node of the geocell by rivets, and at the connection node, the peeling force and the shearing force between the two cellular sheets are small, so that the two connected sheets are easily peeled off each other or misplaced along the length direction of the sheets.
In view of the foregoing, it is a need for a geocell that can improve the peel and shear resistance between two sheets.
Disclosure of Invention
Accordingly, the present invention is directed to a geocell, wherein cell sheets of the geocell have high peel and shear resistance.
In order to achieve the above object, the present invention provides the following technical solutions:
a geocell comprising a cell sheet for forming a mesh cell and a plurality of node portions for connecting adjacent two of the cell sheets, the node portions comprising:
the middle cushion block is clamped between the two cell sheets and used for increasing friction force;
a fastener for clamping the two cell sheets and the intermediate pad;
and the outer cushion block is arranged on the outer side of the cell sheet and is used for being in fit contact with the extrusion surface of the fastener.
Preferably, the middle cushion block is a middle cushion block with resistance lines on two sides for increasing friction force.
Preferably, the surface of the outer cushion block, which is used for being in fit contact with the cell sheet, is provided with the resistance patterns.
Preferably, the resistance pattern comprises a triangular resistance pattern, a trapezoidal resistance pattern or a wavy resistance pattern.
Preferably, the surfaces of the middle cushion block and the outer cushion block, which are used for being in fit contact with the cell sheets, are provided with wear-resistant coatings.
Preferably, the edge portion of the outer pad is provided with rounded corners for reducing the shearing action of the outer pad on the cell sheet when the cell sheet forms a mesh cell.
Preferably, the corresponding positions of the cell sheet, the middle cushion block and the outer cushion block are respectively provided with a connecting hole, and the fastening piece is a bolt and a nut matched with the connecting holes.
Preferably, the connection hole includes an a-type connection hole, a B-type connection hole, or a C-type connection hole.
Preferably, the thickness of the outer cushion block is greater than or equal to the thickness of the middle cushion block.
Preferably, the intermediate pad comprises a metallic intermediate pad and the outer pad comprises a metallic outer pad.
According to the geocell provided by the invention, the middle cushion block is arranged between the two cell sheets, so that the friction force of the contact surface can be increased, and the two sides of the middle cushion block are respectively in contact with the two cell sheets, so that the friction area between the two cell sheets is increased, the friction force of the two cell sheets at the node part is increased, and the stripping resistance and the shearing resistance of the cell sheets at the node part are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a node in an embodiment of a geocell provided by the present invention;
FIG. 2 is a partial schematic view of FIG. 1A;
FIG. 3 is a schematic view of a geocell according to a first embodiment of the present invention;
FIG. 4 is a side view of a second embodiment of a geocell provided by the present invention;
fig. 5 is a side view of a third embodiment of a geocell provided by the present invention.
Reference numerals in fig. 1 to 5 are as follows:
the three-dimensional structure comprises a grid sheet 1, a node part 2, a middle cushion block 3, an outer cushion block 4, a round angle 41, a fastener 5, a resistance line 6 and a connecting hole 7.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The core of the invention is to provide a geocell, and cell sheets of the geocell have large stripping resistance and shearing resistance.
Referring to fig. 1 to 5, fig. 1 is a front view of a node in an embodiment of a geocell according to the present invention; FIG. 2 is a partial schematic view of FIG. 1A; FIG. 3 is a schematic view of a geocell according to a first embodiment of the present invention; FIG. 4 is a side view of a second embodiment of a geocell provided by the present invention; fig. 5 is a side view of a third embodiment of a geocell provided by the present invention.
The application provides a geotechnique's check room, including being used for forming the check room piece 1 of netted check room and being used for connecting a plurality of node portion 2 of two adjacent check room pieces 1, node portion 2 includes:
the middle cushion block 3 is clamped between the two cell sheets 1 and used for increasing friction force;
a fastener 5 for clamping the two cell sheets 1 and the intermediate pad 3;
and an outer cushion block 4 arranged on the outer side of the cell sheet 1 and used for being in fit contact with the extrusion surface of the fastener 5.
It will be appreciated that when the geocell is fully deployed in use, a net-like cell will be formed between adjacent cell sheets 1 due to the restriction of the node portions 2, and lateral movement of the subgrade material will be inhibited due to the lateral restriction of the cell sheets 1, thereby improving the load carrying capacity of the subgrade.
The geocell provided by the application is mainly used for improving the peeling resistance and the shearing resistance of two adjacent cell sheets 1 at the node part 2. For this purpose, the geocell provided in the present application is provided with an intermediate pad 3 for increasing friction at the node portion 2 of two adjacent cell sheets 1.
That is, when the cell sheets 1 are pulled away from each other, the two adjacent cell sheets 1 of the same node portion 2 have a peeling force and a shearing force of relative slip, which are separated from each other. Considering the material and cost, the material of the cell sheets 1 is usually a plastic sheet, and the friction force between the plastic sheet and the plastic sheet is usually small, so the application improves the peeling resistance and the shearing resistance between the two cell sheets 1 by providing the intermediate pad 3 for increasing the friction force between the two cell sheets 1.
Specifically, as shown in fig. 1, the outer cushion block 4, the cell sheet 1, the intermediate cushion block 3, the cell sheet 1 and the outer cushion block 4 are tightly connected by a fastener 5 after being stacked.
The upper and lower two surfaces of middle cushion 3 respectively with two cell piece 1's a side laminating contact, with two cell piece 1 direct contact's frictional force turn into the frictional force between cell piece 1 and the middle cushion 3, because middle cushion 3 can increase frictional force, and two sides of middle cushion 3 all with cell piece 1 laminating contact, increased the frictional area between two cell pieces, consequently, improved the frictional force of two cell pieces 1 at node 2.
The two outer cushion blocks 4 are respectively in fit contact with the other side surfaces of the two cell sheets 1, the other side of the outer cushion blocks 4 is in fit contact with the extrusion surface of the fastening piece 5, and the outer cushion blocks are used for buffering the pressure of the fastening piece 5 to the cell sheets 1, so that the extrusion surface of the fastening piece 5 is prevented from being directly in fit contact with the cell sheets 1, the extrusion force of the fastening piece 5 is caused to directly act on the side surfaces of the cell sheets 1, the cell sheets 1 are damaged, and the strength of the cell sheets 1 is further influenced. On the other hand, the outer cushion block 4 also plays a role in sealing the connection of the fastening piece 5 and the cell sheet 1, so that the tightness of the connection part is increased, and the connection reliability of the fastening piece 5 and the cell sheet 1 is ensured.
The thicknesses of the intermediate pad 3 and the outer pad 4 are not particularly limited in this application. In view of the fact that both the upper and lower contact surfaces of the intermediate pad 3 are worn, in order to ensure uniformity of service lives of the intermediate pad 3 and the outer pad 4, it is preferable that the thickness of the intermediate pad 3 is twice that of the outer pad 4. However, in view of the squeezing action of the outer pad 4 by the fastener 5, it is preferable to appropriately thicken the thickness of the outer pad 4 in order to improve the cushioning action and the service life of the outer pad 4. Therefore, the user can select the thickness of the middle cushion block 3 and the outer cushion block 4 according to actual needs, as long as the middle cushion block 3 can improve the friction force between the two cell sheets 1, and the outer cushion block 4 can avoid the damage to the cell sheets 1 caused by the fastening piece 5.
As a preferable scheme, the middle cushion block 3 is a metal middle cushion block, and the outer cushion block 4 is a metal outer cushion block. Of course, the middle cushion block 3 and the outer cushion block 4 can also be a nonmetallic middle cushion block and a nonmetallic outer cushion block with higher strength.
The specific structure of the fastener 5 is not limited in this embodiment, as long as two cell sheets 1 can be tightly connected.
To sum up, the geotechnical cell that this application provided, owing to be equipped with middle cushion 3 between two cell pieces 1, the frictional force between the contact surface can be increased to middle cushion 3, and the both sides of middle cushion 3 respectively with the laminating of the side of two cell pieces 1 contact, increased the friction area between two cell pieces 1, consequently, middle cushion 3 has increased the frictional force of two cell pieces 1 at node 2 to two cell pieces 1 have improved the anti peel force and the anti shearing force of node 2.
In order to improve the friction force between the contact surfaces of the middle cushion block 3 and the cell sheet 1, on the basis of the embodiment, the middle cushion block 3 is a middle cushion block 3 with resistance lines 6 for increasing the friction force on both sides.
That is, the upper and lower surfaces of the middle pad 3 are provided with the resistance stripes 6, and the friction force of the contact surface between the middle pad 3 and the cell sheet 1 is increased by the resistance stripes 6 in this embodiment, so that the peeling resistance and the shearing resistance of the cell sheet 1 at the node portion 2 are improved.
In order to improve the friction between the contact surfaces of the outer cushion block 4 and the cell sheet 1, the surface of the outer cushion block 4, which is used for being in contact with the cell sheet 1, is provided with resistance patterns 6 on the basis of the embodiment.
That is, the outer pad 4 is in contact with the cell sheets 1 through the resistance stripes 6, which further increases the friction between the two cell sheets 1, and improves the peel resistance and the shear resistance of the two cell sheets 1.
In view of the specific shape of the resistance bands 6, the resistance bands 6 comprise triangular resistance bands, trapezoidal resistance bands or wavy resistance bands on the basis of the above-described embodiments.
In order to improve the service life of the middle cushion block 3 and the outer cushion block 4, on the basis of the embodiment, the surfaces, which are used for being in fit contact with the cell sheets 1, of the middle cushion block 3 and the outer cushion block 4 are provided with wear-resistant coatings.
It will be appreciated that the wear-resistant coating may increase the wear resistance of the intermediate pad 3 and the outer pad 4, so that the intermediate pad 3 and the outer pad 4 are not easily worn, thereby improving the service lives of the intermediate pad 3 and the outer pad 4, and keeping the reliable friction between the bonding contact surfaces of the intermediate pad 3 and the cell sheet 1 and between the outer pad 4 and the cell sheet 1 for a long time.
Considering that when the cell sheets 1 are expanded into a mesh-like cell, the two cell sheets 1 are separated from each other, the edge portions of the outer pad 4 will exert a shearing action on the cell sheets 1 due to the restraining action of the node portions 2, and in order to reduce the shearing action of the outer pad 4 on the cell sheets 1, the edge portions of the outer pad 4 are provided with rounded corners 41 for reducing the shearing action of the outer pad 4 on the cell sheets 1 when the cell sheets 1 form the mesh-like cell, on the basis of any one of the above embodiments.
It can be understood that the edge of the outer cushion block 4 is smoothly transited through the rounding 41, so that when the cell sheets 1 are peeled off from each other, the rounding 41 can just avoid the bending part of the cell sheet 1, and the right angle edge of the outer cushion block 4 is prevented from being too sharp, so that the shearing action is generated on the bending part of the cell sheet 1.
Considering the specific structure of the fastening piece 5 and the specific connection mode of the fastening piece 5 and the cell piece 1, on the basis of the above embodiment, corresponding positions of the cell piece 1, the middle cushion block 3 and the outer cushion block 4 are provided with a type-A connection hole, a type-B connection hole or a type-C connection hole, and the fastening piece 5 is a bolt and a nut with corresponding types.
That is, in this embodiment, two adjacent cell sheets 1, an intermediate pad 3, and two outer pads 4, which are stacked, are fixedly connected by bolts and nuts.
It can be understood that the bolting method has a larger connection strength than the riveting method in the prior art, and it can be seen from the peel force test and the shear force test of the node portion 2 that the bolting method also greatly improves the peel force resistance and the shear force resistance of the cell sheet 1.
It should be noted that, the user may determine the type of the connection hole 7 according to the specific size of the required connection strength, and further select the bolt and the nut of the corresponding type.
In order to further improve the connection strength, the number of the connection holes 7 is preferably three, and the three connection holes 7 are preferably arranged side by side at equal intervals in the width direction of the cell sheet 1. Still further, the widths of the intermediate pad 3 and the outer pad 4 may be increased according to the connection strength requirement, and thus, the connection holes 7 may be added, for example, at least two rows of connection holes 7 may be provided along the length direction of the cell sheet 1, and each row of connection holes 7 may be provided side by side at equal intervals along the width direction of the cell sheet 1. The connecting holes 7 of two adjacent rows can be aligned one by one or staggered.
The thickness of the outer cushion block 4 is greater than or equal to the thickness of the middle cushion block 3 on the basis of the above embodiment, taking into consideration the cost of the middle cushion block 3 and the cushioning effect of the outer cushion block 4 on the pressure of the fastener 5.
Practical tests show that the resistance patterns 6 on the upper surface and the lower surface of the middle cushion block 3 are enough to improve the friction force of the joint contact surface of the middle cushion block 3 and the cell sheet 1, and the thickness of the middle cushion block 3 is enough to ensure the arrangement of the resistance patterns 6 on the upper surface and the lower surface in order to save the cost.
In addition, in order to buffer the pressing action of the fastening member 5, to avoid damage to the cell sheet 1 caused by the fastening member 5, it is necessary to secure the outer mat 4 to have a sufficient thickness. Therefore, the thickness of the outer pad 4 is equal to or greater than the thickness of the intermediate pad 3 in this embodiment.
In order to ensure that the intermediate pad 3 and the outer pad 4 have sufficient strength, the intermediate pad 3 comprises a metallic intermediate pad and the outer pad 4 comprises a metallic outer pad.
In the description of the present application, it should be understood that the directions or relationships indicated by the terms "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific direction, and a specific direction configuration and operation, and thus should not be construed as limiting the present application.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The geocell provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (3)
1. Geocell characterized by comprising a cell sheet (1) for forming a mesh cell and a number of node portions (2) for connecting two adjacent cell sheets (1), the node portions (2) comprising:
the middle cushion block (3) is clamped between the two cell sheets (1) and used for increasing friction force;
a fastener (5) for clamping the two cell sheets (1) and the intermediate pad (3);
the outer cushion block (4) is arranged on the outer side of the cell sheet (1) and is used for being in fit contact with the extrusion surface of the fastener (5);
the middle cushion block (3) is a middle cushion block with resistance patterns (6) for increasing friction force on two sides, the resistance patterns (6) are arranged on the surface of the outer cushion block (4) which is used for being in fit contact with the cell sheet (1), and the thickness of the middle cushion block (3) is twice that of the outer cushion block (4);
the surfaces of the middle cushion block (3) and the outer cushion block (4) which are used for being in fit contact with the cell sheets (1) are provided with wear-resistant coatings;
the corresponding positions of the cell sheet (1), the middle cushion block (3) and the outer cushion block (4) are respectively provided with a connecting hole (7), and the fastening piece (5) is a bolt and a nut matched with the connecting holes (7);
the middle cushion block (3) is a metal middle cushion block, and the outer cushion block (4) is a metal outer cushion block;
the upper surface and the lower surface of the middle cushion block (3) are respectively in fit contact with one side face of the two cell sheets (1), and the friction force of the two cell sheets (1) in direct contact is converted into the friction force between the cell sheets (1) and the middle cushion block (3).
2. Geocell according to claim 1, wherein the resistance pattern (6) comprises a triangular resistance pattern, a trapezoidal resistance pattern or a wavy resistance pattern.
3. Geocell according to claim 1 or 2, wherein the edge portion of the outer spacer (4) is provided with rounded corners (41) for reducing the shearing action of the outer spacer (4) on the cell sheet (1) when the cell sheet (1) forms a mesh cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305692.9A CN108330763B (en) | 2018-04-08 | 2018-04-08 | Geotechnical grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305692.9A CN108330763B (en) | 2018-04-08 | 2018-04-08 | Geotechnical grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108330763A CN108330763A (en) | 2018-07-27 |
| CN108330763B true CN108330763B (en) | 2024-02-27 |
Family
ID=62932592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810305692.9A Active CN108330763B (en) | 2018-04-08 | 2018-04-08 | Geotechnical grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108330763B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278684A (en) * | 2014-09-10 | 2015-01-14 | 北京林业大学 | Earthwork standard room and fiber blanket combined side slope ecological protection method and structure |
| CN204401597U (en) * | 2014-12-30 | 2015-06-17 | 王绪保 | Combined type enhancement mode geotechnical grid |
| CN204456054U (en) * | 2015-01-16 | 2015-07-08 | 何晓婷 | A kind of geotechnical grid be made up of grid rib tape |
| CN105735230A (en) * | 2014-12-08 | 2016-07-06 | 仪征市双友土工合成材料有限公司 | Novel geo-cell |
| CN107386254A (en) * | 2017-09-07 | 2017-11-24 | 郭岳 | The node injection geotechnical grid and its processing method of a kind of global formation |
| CN208104937U (en) * | 2018-04-08 | 2018-11-16 | 安徽徽风新型合成材料有限公司 | A kind of geotechnical grid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2625058C1 (en) * | 2016-08-26 | 2017-07-11 | Общество с ограниченной ответственностью "Мики" | Reinforced geogrid and method of its production |
-
2018
- 2018-04-08 CN CN201810305692.9A patent/CN108330763B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278684A (en) * | 2014-09-10 | 2015-01-14 | 北京林业大学 | Earthwork standard room and fiber blanket combined side slope ecological protection method and structure |
| CN105735230A (en) * | 2014-12-08 | 2016-07-06 | 仪征市双友土工合成材料有限公司 | Novel geo-cell |
| CN204401597U (en) * | 2014-12-30 | 2015-06-17 | 王绪保 | Combined type enhancement mode geotechnical grid |
| CN204456054U (en) * | 2015-01-16 | 2015-07-08 | 何晓婷 | A kind of geotechnical grid be made up of grid rib tape |
| CN107386254A (en) * | 2017-09-07 | 2017-11-24 | 郭岳 | The node injection geotechnical grid and its processing method of a kind of global formation |
| CN208104937U (en) * | 2018-04-08 | 2018-11-16 | 安徽徽风新型合成材料有限公司 | A kind of geotechnical grid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108330763A (en) | 2018-07-27 |
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