Geocaris

 

The invention relates to the construction and can be used to reinforce slopes, earthworks cones bridges, overpasses, slopes coastlines and beds of water bodies, as well as for the reinforcement of the foundations of roads, airfields, industrial and civil construction. Geocaris cellular structure made of a flexible polymer tape installed on the edges and interconnected linear welds in compression tape the two clamps with the formation in zones of welds in the recesses of the projections of one of the clamps. What's new is that the indentations in the zones of welds made variable area height decreasing toward the surface of the contact strips, and the height of the recesses 0,55-0,75 thickness of the tape. The technical result of the invention is to increase the strength of the weld, as well as increasing the life and durability of the honeycomb structure is exposed to a soil environment. 2 C.p. f-crystals, 4 Il.

The invention relates to the construction and can be used to reinforce slopes, earthworks cones bridges, overpasses, slopes coastlines and beds of water bodies, as well as for reinforcement of the La strengthen the soil in the form of the geogrid mesh structure, made of flexible polymer strips interconnected by welded seams so that when stretched, they form a honeycomb structure (see U.S. patent No. 4717283, CL E 02 In No.3 / 72, 1988). Known technical solution has the following disadvantages. First, it is not ensured balanceddesigns, which is associated with low strength of welds made without taking into account the optimal ratio of temperature, conditions of clamp bands and welding time. Secondly, the walls of the cells has a continuous waterproof, which upsets the natural hydrological conditions and water drainage down the slope. The root system of plants to a certain extent isolated outside of the cell, which complicates the conditions of education for sustainable turf on the protected surface.

The closest technical solution to the invention in its essence and the achieved technical result is geocaris honeycomb structure made of a flexible polymer tape installed on the edges and interconnected linear welds, compression tape the two clamps with the formation in zones of welds in the recesses of the projections of one of the clamps (see EN 2166025, 21.03.00).

The disadvantage of this design were loads seam is torn by points of a clip.

Task to be solved by the present invention is directed, is to increase the strength of the weld, as well as increased service life and durability of the honeycomb structure is exposed to a soil environment.

The problem is solved due to the fact that geocaris honeycomb structure made of a flexible polymer tape installed on the edges and interconnected linear welds in compression tape two clamps, with the formation in zones of welds in the recesses of the projections of one of the clamps according to the invention the grooves change square height decreasing toward the surface of the contact strips, and the height of the recesses 0,55 - 0,75 thickness of the tape.

While supporting the end surface of each tape can be performed with alternating protrusions and depressions along the length of the tape. Deepening can be made hemispherical shape or in the shape of a truncated cone.

The technical result provided by the present set of existing signs, is to increase the strength of geocaris and durability of its use by eliminating gaps in the zone of welds during fabrication geocaris, and in the of execution of the recesses in the area of welds optimal forms and settings, established experimentally.

The invention is illustrated by drawings, where: Fig. 1 shows a General view of geocaches in the extended working condition; Fig. 2 - General view of geocaches in the folded transport condition; Fig. 3 - a piece of tape with the recesses of the weld and holes in the walls of the cells of Fig. 4 - section a-a in Fig. 3.

On the drawings the following notation:

A - length of geocaches in the extended (working) state, equal 3-12 m;

Andabout- length geocaris in the folded transport condition is 0.08 - 0,32 m;

In - width geocaris in the extended (operational), 0.5 - 3.0 m;

Inabout- the width of geocaches in the folded transport condition, equal to 0.7 and 4.4 m;

a = in - cell width of geocaches in the stretched condition, is 0.1-1.0 m;

inabout- cell width in the folded state, is equal to the distance between welds 0.14 to 1.4 m;

H - the height of geocaris, 0.05 - 0.3 m;

h is the thickness of the tape is equal to 0.5 - 2.1 mm;

with the width of the weld and heat-affected zones;

dinwiththe diameter of the recesses of the seam on top of 1 - 5 mm;

dnwith- the size of the recesses seam across the bottom of 0.01-4.9 mm;

t is the distance between the recesses of the weld equal to 2-5 mm;

Geocaris consists of a flexible polymer tape 1 installed on the ribs 2 and interconnected linear seams 3 compression tape 1 two clamps, one of which has a flat surface, and the other made with protrusions ( not shown).

In zones of welds 3 compression formed recess 4 from the tabs of one of the clamps. To eliminate gaps tape 1 for mounting and operating the recess 4 in the zones of welds made variable area height decreasing toward the surface 5 of the contact strips 1. The height of the recesses hy0,55 - 0,75 thickness h of the tape 1. While supporting the end surface 6 of the tape 1 is made along the length of the tape 1 with alternating protrusions 7 and valleys 8.

Polymer belt is made primarily of a mixture of polyethylene of high pressure and low pressure polyethylene. The entire length of the tape 1 in the manufacturing process of punched holes 9, which form a uniform perforation area of the walls of the cells 10, and the size of the holes 9 establish experimentally depending on the grain size of the soil.

In the polymeric material of the tape can be entered light stabilizers or pigments.

This welds the frame, and the point of the clip is formed with two clamps, one of which has a flat contact surface, and the other contact surface in the form of two or more rows of tabs in a checkerboard pattern. The walls of the cells 10 are fastened to each other and to the support surface by means of connecting elements (not shown) passed through holes 9 in the walls of the cells.

The invention is implemented by combining polymeric tapes 1 linear welded seams 3, arranged in a checkerboard pattern (Fig.1, 2). To increase the structural strength and to increase the strength of attachment (anchoring) on the soil surface of geocaches can be provided with connecting elements, for example a polymeric cables passed through apertures in the walls of the cells and fixed on the first and last tapes. The number of elements selected in accordance with characteristics strengthen the surface.

Welds have the area of the gap, equal to from 0.1 to 0.3 of the height of geocaches. When stretching geocaris in the operating condition of the tear zone of welds exposed, forming the slotted holes, which improves drainage and message cavities of adjacent cells.

The holes 9 in the walls of the cells 10 located the sizes of the holes should be no more than 30% of its height. Under this condition, the strength of the tape to break through the line of holes is approximately equal to the strength of the weakest element geocaris, namely the strength of the weld that meets the criteria of ravnopravnosti design.

In the manufacture of geocaris to strengthen clay and sandy soils at sites where hydrologic conditions do not affect its functioning, for example in areas with arid climate, it is advisable to carry out the design of the non-perforated polymeric tapes.

The surface of the welded strips may be smooth or textured to increase friction of soil material with the walls of the cells.

Tape 1 (Fig.1, 2) weld between them by introducing into the contact area of the welding hot solid wedge to obtain a viscous-plastic state. Then the wedge is removed from the weld zone and carry out the compression of the tape by means of two clamps. One clip has a flat contact surface, and the other contact surface in the form of two or more rows of tabs (not shown).

According to the invention formed depressions in the zones of welds have a curved shape without direct and sharp corners, for example predominantly hemispheres of the original tape, which exceeds the same indicator of the well-known solution to 10-12%.

When performing fastening work geocaris stretch in working condition and set on the prepared surface of the soil. Then geocaris fixed on the reinforcing layer by means of tie rods (not shown). In a similar way close to first establish the following geocaris, connecting them with each other and with the lower layer of the G-shaped anchors (not shown). Then in the cell stack clay material, crushed stone, gravel, sand Grafenau mixture or concrete depending on the destination object.

Soil infill material cells perceives compressive loads, and the walls of the cells perceive tensile (shear) stress. The external load is distributed evenly on strengthening the surface due to the communication between the cavities of the cells, anchoring and additional connecting elements. The optimal location on the walls of the cells perforations provides reliable drainage strengthen soil layer.

Claims

1. Geocaris honeycomb structure made of a flexible polymer tape installed on the arts weld grooves from the tabs of one of the clamps, characterized in that the depressions in the zones of welds made variable area height decreasing toward the surface of the contact strips, and the height of the recesses 0,55-0,75 thickness of the tape.

2. Geocaris under item 1, characterized in that the supporting end surface of the tapes made on the length of the tape with alternating protrusions and depressions.

3. Geocaris according to any one of paragraphs.1 and 2, characterized in that the grooves of the hemispherical form or in the form of a truncated cone.

 

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1 dwg

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