CN112761172A

CN112761172A - Integral anchor rod geocell

Info

Publication number: CN112761172A
Application number: CN202110066558.XA
Authority: CN
Inventors: 朱江; 刘源; 李潇; 王晓晓; 高明清; 陈伟
Original assignee: Anneng Yike Beijing Technology Co ltd; Beijing General Municipal Engineering Design and Research Institute Co Ltd
Current assignee: Anneng Yike Beijing Technology Co ltd; Beijing General Municipal Engineering Design and Research Institute Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-05-07

Abstract

An integral anchor rod geocell comprises a geocell, a cylinder and an anchor rod; each cell of the geocell is a rhombic cell, each node position of each rhombic cell is provided with a cylinder, two ends of each cell sheet on the four sides of the rhombic cell are hinged with the cylinders, and each cylinder is hinged with four cell sheets; the cylinder is a hollow sleeve, and the wall of the outer side of the cylinder is symmetrically provided with 4 rows of a plurality of fixing holes which are arranged along the axial direction; a plurality of connecting holes which are vertically arranged are arranged on the side edge of each cell piece on the four sides of the rhombic cell corresponding to the fixing hole; the annular connecting rings with reserved openings respectively penetrate through the connecting holes and are welded in the fixing holes, and the grid cell sheets are hinged with the sleeve through the connecting rings; the upper end of the cylinder is not lower than the upper ends of the grid cell pieces, and the lower end of the cylinder is not higher than the lower ends of the grid cell pieces; a plurality of anchor rods are respectively inserted into the cylinder and then are inserted into the slope surface for fixing; the invention solves the technical problems that the connection structure of the cells and the anchor rods and the connection strength of the cell nodes are insufficient, and the geocell is deformed and damaged.

Description

Integral anchor rod geocell

Technical Field

The invention relates to the technical field of slope protection engineering, in particular to an integral anchor rod geocell.

Background

Slope soil consolidation is a key and difficult point of slope protection engineering, and structures such as wire netting, three-dimensional nets, geogrids, geocells and the like are generally adopted to provide physical protection for slope soil, consolidate the soil and prevent water and soil loss.

The geocell gradually becomes a preferred material for slope soil stabilization due to the advantages of light dead weight, good toughness, high strength, convenient transportation, capability of constructing a soil layer with a certain thickness and the like. There are many kinds of geotechnique's check room in the market at present, except that the material type is different, its difference mainly lies in the different connected mode of check room piece to need be fixed in the domatic of side slope through the stock with geotechnological check room. Because the connected mode of stock and check room node structural strength are not enough, lead to the work progress often to make check room node damage to reduce the node and to tensile strength, cause the breakage of check room piece, can't effectively solidify soil, lead to the engineering quality problem. Especially for high and steep rocky slopes, the soil fixation thickness is generally more than or equal to 15cm, the peeling strength of the grid chamber nodes often does not meet the requirement at the moment, and the geocell is deformed and damaged, so that the connection structure of the grid chamber and the anchor rod and the connection node structure of the grid chamber sheets need to be solved urgently to ensure that the construction link does not damage the grid chamber nodes and improve the engineering quality.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an integral anchor rod geocell, which aims to solve the technical problems that the geocell is deformed and broken due to the fact that a connection structure of the geocell and an anchor rod and connection strength of geocell nodes are insufficient and the geocell nodes are damaged.

The invention adopts the following technical scheme:

an integral anchor rod geocell comprises a geocell, a cylinder and an anchor rod; the geocell is characterized in that each cell of the geocell is a diamond cell, the cylinder is arranged at each node position of each diamond cell, two ends of each cell sheet on four sides of each diamond cell are hinged with the cylinder, and each cylinder is hinged with four cell sheets; the cylinder is a hollow sleeve, and the wall of the outer side of the cylinder is symmetrically provided with 4 rows of a plurality of fixing holes which are arranged along the axial direction; a plurality of connecting holes which are vertically arranged are arranged on the side edge of each cell piece on the four sides of the rhombic cell corresponding to the fixing hole; the annular connecting rings with reserved gaps penetrate through the connecting holes and are welded in the fixing holes respectively, and the grid cell sheets are hinged with the cylinder through the connecting rings; the upper end of the cylinder is not lower than the upper ends of the grid chamber sheets, and the lower end of the cylinder is not higher than the lower ends of the grid chamber sheets; and a plurality of anchor rods are respectively inserted into the cylinder and then are inserted into the slope surface of the side slope for fixation.

The number of the connecting holes is 4-5.

And the clearance between the anchor rod and the cylinder is filled with dense sand.

The connecting ring is horizontally arranged, namely perpendicular to the axial direction of the cylinder; the opening end of the connecting ring is welded in the fixing hole; and each cell sheet of the geocell is folded along the connecting ring in a rotating way.

The geocell is laid on the side slope.

And laying a layer of steel wire mesh on the laid geocell, wherein the steel wire mesh is fixed on the side slope through a connecting anchor rod.

The invention has the following positive and beneficial effects:

1) the grid cell sheets of the geocell are welded with the cylinder through the hinged connecting rings, so that the overall strength of the geocell and the strength of grid cell nodes are improved. In particular, the connecting ring hinge structure is also beneficial to the folding transportation of the geocell and the unfolding during the laying.

2) The anchor rod is inserted into the cylinder to bear the downward tension of the geocell and soil between the geocell and the geocell, so that the geocell is connected more firmly, the soil is dispersed and stressed, and the geocell cannot be deformed and damaged.

3) Meets the strength requirement that the slope rate is more than 1:0.3 and the soil fixation depth is more than or equal to 15 cm.

Drawings

FIG. 1 is a schematic view of the sleeve of the present invention connected to 2 cellular sheets;

FIG. 2 is a schematic illustration of the anchor construction of the present invention;

FIG. 3 is a schematic side view of the present invention laid on a slope;

FIG. 4 is a schematic view of the invention integrally laid on a slope;

FIG. 5 is an enlarged partial schematic view of the present invention;

the reference numbers: 1-grid chamber sheet, 2-connecting ring, 3-cylinder, 4-anchor rod, 5-slope surface, 6-geotechnical grid chamber, 7-planting soil, 8-steel wire mesh and 9-vegetation;

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings.

The following examples are given for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. It will be apparent to those skilled in the art that other variations and modifications can be made in the invention without departing from the spirit of the invention, and it is intended to cover all such modifications and variations as fall within the true spirit of the invention.

As shown in fig. 1-5, the integral anchor rod geocell of the invention comprises a geocell, a cylinder and an anchor rod; as shown in fig. 5, each cell of the geocell 6 is a diamond cell, the cylinder 3 is arranged at each node position of each diamond cell, two ends of each cell sheet 1 of four sides of the diamond cell are hinged with the cylinder, and each cylinder 3 is hinged with four cell sheets; as shown in fig. 1 and 5, the cylinder is a hollow sleeve, and the outer cylinder wall of the cylinder is symmetrically provided with 4 rows of a plurality of fixing holes which are arranged along the axial direction; a plurality of connecting holes which are vertically arranged are arranged on the side edge of each cell piece on the four sides of the rhombic cell corresponding to the fixing hole; the annular connecting rings 2 with reserved gaps respectively penetrate through the connecting holes and are welded in the fixing holes, and the grid cell sheets are hinged with the cylinder through the connecting rings 2; the upper end of the cylinder is not lower than the upper ends of the grid chamber sheets, and the lower end of the cylinder is not higher than the lower ends of the grid chamber sheets; a plurality of anchor rods 4 are respectively inserted into the cylinder and then are inserted into the slope surface 5 for fixation; the node refers to the diamond-shaped vertex of the diamond-shaped cell, namely the joint of each cell piece. Because the grid cell pieces are hinged with the cylinder through the connecting rings 2, the grid cell pieces can be folded together around the circular ring in the transportation process, and the grid cell pieces can be unfolded around the circular ring in the unfolding process when being laid on the slope surface, so that the fracture and the damage of nodes in the construction process are avoided.

The number of the connecting holes is 4-5. The connection strength of the nodes is satisfied.

And the clearance between the anchor rod and the cylinder is filled with dense sand. The dense sandy soil disperses the acting force of the anchor rod on the grid cell sheet, and the strength of the grid cell is improved.

As shown in fig. 4, the geocell is laid on the slope surface 5.

And laying a layer of steel wire mesh 8 on the laid grid chamber, wherein the steel wire mesh is fixed on the side slope through a connecting anchor rod.

In a first embodiment, the construction method of the integral anchor rod geocell of the invention comprises the following steps:

firstly, carrying out slope cleaning measures such as removal of dangerous stones, removal of rubble and floating soil weeds, filling of low-lying positions and the like on a slope protection slope surface needing to be paved with grid chambers, and ensuring that the treated slope surface is flat and uniform and the upper and lower slopes are basically consistent;

secondly, pulling apart the assembled, folded and attached geocell 6, inserting an anchor rod 4 into the cylinder at the upper part of the geocell and fixing the geocell on the slope 5, filling compact sandy soil into the gap between the anchor rod and the cylinder, ensuring that the geocell is stretched in place and is completely opened, and ensuring that each small geocell is in a diamond shape; the number of the anchor rods 4 is determined as required, and the number of the anchor rods on the steep slope is more than that of the anchor rods on the gentle slope; the anchor rod is inserted into the cylinder to bear the downward tension of the geocell and soil between the geocell and the geocell, so that the geocell is connected more firmly, and the geocell cannot deform and damage.

Thirdly, if the flatness of the slope surface is low, a layer of steel wire mesh 8 can be laid on the laid grid chamber, the upper end of the steel wire mesh is fixed on the slope surface 5 through a binding anchor rod 4, the steel wire mesh is laid well in a pressing mode, the grid chamber can be tightly attached to the slope surface, and the soil fixing effect is guaranteed;

and fourthly, after the grid chamber is laid, covering soil and burying as soon as possible to prevent sunshine from solarizing and reduce the strength of the grid chamber, and carrying out slope soil covering and other follow-up work by selecting modes such as manual soil covering or wet spray seeding according to the characteristics of the slope on the ground.

Claims

1. An integral anchor rod geocell comprises a geocell, a cylinder and an anchor rod; the geocell is characterized in that each geocell of the geocell (6) is a rhombic geocell, the cylinder (3) is arranged at each node position of each rhombic geocell, two ends of each geocell sheet (1) on four sides of the rhombic geocell are hinged with the cylinder, and each cylinder (3) is hinged with four geocell sheets; the cylinder is a hollow sleeve, and the wall of the outer side of the cylinder is symmetrically provided with 4 rows of a plurality of fixing holes which are arranged along the axial direction; a plurality of connecting holes which are vertically arranged are arranged on the side edge of each cell piece on the four sides of the rhombic cell corresponding to the fixing hole; the annular connecting rings (2) with reserved gaps penetrate through the connecting holes and are welded in the fixing holes respectively, and the grid cell sheets are hinged with the cylinder through the connecting rings (2); the upper end of the cylinder is not lower than the upper ends of the grid chamber sheets, and the lower end of the cylinder is not higher than the lower ends of the grid chamber sheets; a plurality of anchor rods (4) are respectively inserted into the cylinders and then are inserted into the slope surface of the side slope for fixation.

2. An integral anchor geocell of claim 1, wherein the number of the connection holes is 4-5.

3. An integral anchor geocell of claim 1, wherein the gap between the anchor and the cylinder is filled with dense sand.

4. An integral anchor geocell of claim 1, wherein the connecting ring is disposed horizontally, i.e., perpendicular to the axial direction of the cylinder; the opening end of the connecting ring is welded in the fixing hole; and each cell sheet of the geocell is folded along the connecting ring in a rotating way.

5. An integral anchor geocell of claim 1, wherein the geocell is laid on a slope.

6. An integral anchor rod geocell of claim 5, wherein a layer of steel wire mesh (8) is laid on the laid geocell, and the steel wire mesh is fixed on the slope surface of the side slope through connecting anchor rods.