CN114960337B - Three-dimensional net pad for repairing pavement pit - Google Patents
Three-dimensional net pad for repairing pavement pit Download PDFInfo
- Publication number
- CN114960337B CN114960337B CN202210576964.5A CN202210576964A CN114960337B CN 114960337 B CN114960337 B CN 114960337B CN 202210576964 A CN202210576964 A CN 202210576964A CN 114960337 B CN114960337 B CN 114960337B
- Authority
- CN
- China
- Prior art keywords
- dimensional
- grid
- plane
- nodes
- node
- 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.)
- Active
Links
Images
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
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a three-dimensional net pad for repairing a pavement pit slot, which comprises a two-dimensional plane grid and three-dimensional nodes; the two-dimensional plane grid comprises plane grid lines, plane grid circular nodes and plane grid meshes; a plurality of plane grid lines which are regularly arranged are connected with one another to form a plane structure; the intersection points of the plane grid lines are provided with plane grid circular nodes, and plane grid meshes are formed at the gaps; all plane grid meshes in the two-dimensional plane grid are completely identical; a vertically through nail hole is formed in the center of the circular node of the plane grid and is used for being matched with a road surface engineering nail; the three-dimensional nodes are three-dimensional structures with circular bottom surfaces; the center of the three-dimensional node is provided with a vertically through nail hole which is used for being matched with a road engineering nail. The three-dimensional net pad respectively provides two-dimensional and three-dimensional lateral constraint for the repairing material, generates a interlocking effect, limits the movement of the repairing material, improves the stability of the mixture at the joint surface and the binding force of the contact surface, and prolongs the service life of the flexible pavement.
Description
Technical Field
The invention relates to the field of highway maintenance, in particular to a three-dimensional net pad for repairing a pavement pit.
Background
The asphalt concrete pavement is an advanced flexible pavement and has the characteristics of flat pavement, comfort running and the like. However, due to the influence of factors such as the increase of traffic load and the construction quality of the road surface, diseases such as pits and cracks and the like easily occur in the early stage of the road surface, and part of diseases can be even further deteriorated. The pit is a common disease which is easy to generate on the asphalt concrete pavement, and occupies a larger area in the pavement disease, in particular to a concave structure formed after asphalt pavement aggregate is peeled off due to water damage and other reasons. The occurrence of pits is accidental, if the pits are not maintained in time, large-area pits can be formed on the peripheral road sections under the expansion of the vehicle load, the driving comfort and safety are seriously affected, and even the road surface base layer is further damaged.
The conventional pit repairing method comprises two types of filling repairing and digging repairing, and the bonding force of the contact surface between the new asphalt mixture and the old asphalt mixture is a key for influencing the repairing quality and the service life no matter the hot material or the cold material is adopted as the repairing material. In order to improve the contact adhesion between the repairing block and the pit slot wall, methods for improving the joint adhesion by coating adhesive layer oil, heating joints, cutting the side wall of the waste Sichuan type bevel and the like are proposed in engineering. However, the joint bonding state after repair cannot maintain a long service life due to the influence of pit depth and construction technology. For example, the contact adhesion provided by the single use of the adhesive layer oil is limited, and special attention needs to be paid to the fact that oil accumulation cannot be generated at the bottom and the surrounding side walls of the pit when the adhesive layer oil is coated, otherwise, the adhesion is reduced; the heating joint is limited by heating equipment when the pit depth is deeper, and the heating joint is easy to heat unevenly at the bottom of the pit, so that the bonding force is affected; chamfering the sidewalls reduces the compactness of the bottom of the filling. The methods increase the construction difficulty and cost, the adhesion force of the contact surface is limited, and the repair quality is easily affected by factors such as load, climate and the like. Practice proves that the traditional repairing method for the pits of the asphalt pavement has the defects of low service life of the repairing block, unstable adhesion of the contact surface of the new asphalt mixture and the old asphalt mixture and easy generation of secondary diseases under the action of external factors such as running load, precipitation and the like.
Therefore, it is difficult to maintain a long service life by only adopting methods such as adhesive layer oil or thermal seam to improve the bonding force of the repair block seam, and the bonding force provided by the contact surface is unstable and is easily influenced by factors such as load, water accumulation and the like. In order to improve the service life of the repairing block, a new structure is required to be arranged at the new and old asphalt contact surface of the pit slot in engineering to occlude the repairing material with the old pavement material together, and the relative displacement of the repairing material and the old pavement material under load is restrained, so that the bonding force of the contact surface is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the three-dimensional net pad for repairing the pavement pit.
The technical scheme for solving the technical problems is that the three-dimensional net pad for repairing the pavement pit is provided, and is characterized by comprising a two-dimensional plane grid and three-dimensional nodes;
the two-dimensional plane grid comprises plane grid lines, plane grid circular nodes and plane grid meshes; a plurality of plane grid lines which are regularly arranged are connected with one another to form a plane structure; the intersection points of the plane grid lines are provided with plane grid circular nodes, and plane grid meshes are formed at the gaps; all plane grid meshes in the two-dimensional plane grid are completely identical; a vertically through nail hole is formed in the center of the circular node of the plane grid and is used for being matched with a road surface engineering nail;
the three-dimensional nodes are three-dimensional structures with circular bottom surfaces; the diameter of the circular bottom surface is the same as the diameter of the circular nodes of the plane grid; a vertically through nail hole is formed in the center of the three-dimensional node and is used for being matched with a road engineering nail;
the two-dimensional plane grid and the three-dimensional nodes are connected into a whole when manufactured and delivered, and the three-dimensional nodes are positioned above the circular nodes of the plane grid to form a three-dimensional node integral three-dimensional net pad; or the two-dimensional plane grid and the three-dimensional nodes are respectively molded when the two-dimensional plane grid and the three-dimensional nodes are manufactured and delivered to the factory to form the three-dimensional node separated three-dimensional net pad, and the three-dimensional nodes are positioned above the two-dimensional plane grid and fixed through the road engineering nails when in use.
Compared with the prior art, the invention has the beneficial effects that:
(1) The three-dimensional net pad can directly provide two-dimensional and three-dimensional lateral constraint for the repairing material through the two-dimensional plane grid and the three-dimensional nodes, the grid and the repairing material generate interlocking action, the movement of the repairing material is limited, the stability of the mixture at the joint surface and the binding force of the contact surface are improved, and the service life of the flexible pavement is prolonged. When the repairing block, especially the joint is subjected to driving load, the net pad structure can resist horizontal stress and bending and stretching stress generated by the load, reduce the relative displacement between the repairing block material and the original road surface, improve the bending and stretching resistance and shearing resistance of the repairing block, and have better repairing effect than cold material cold repairing singly even in quick repairing, and the net pad structure can be adopted for cold repairing and hot repairing to improve the stability of the repairing block.
(2) The three-dimensional net pad and the repairing material form a reinforced composite structure, so that the crack resistance of the repairing block can be improved. And the mesh pad can form a buffer layer between the repair block and the original road surface layer, the mesh structure can diffuse the stress range, relieve the stress mutation and avoid the stress concentration phenomenon, so that the stress of the repair structure is more uniform, and compared with the traditional bonding materials such as the adhesive layer oil, the mesh pad has better deformation resistance and longer service life of the road surface after secondary repair.
(3) The three-dimensional net pad has the structural characteristics of high tensile strength and low elongation, can enhance the creep resistance of the pavement, keeps the long-term service performance of the pavement, and can effectively increase the deformation resistance of the repairing block at the upper part of the net pad, thereby greatly prolonging the service life of the repaired pavement and reducing secondary damage in the original repairing technology.
(4) The invention designs three-dimensional net pad forms, which can better adapt to the disease environment of pits with different depths, ensure that the three-dimensional net pad forms can be well attached to pit walls when the bottom surfaces and the side walls of the pits with different depths are paved, do not influence the filling and compaction of the repairing materials, can better improve the basic binding force between new and old mixtures, and provide stable constraint for the repairing materials.
(5) Compared with the novel repair measures such as the oblique cutting repair method, the spray repair method and the like, the three-dimensional net pad is more economical, simple in structure production, low in requirements on construction equipment, less limited by construction conditions, better in cohesiveness, capable of being combined with the hot repair method and the cold repair method which are widely adopted at present, and capable of enhancing the stability of the repair material.
Drawings
FIG. 1 is a perspective view of a three-dimensional node integrated three-dimensional mesh pad according to embodiment 1 of the present invention;
FIG. 2 is a schematic top view of a three-dimensional node integrated three-dimensional mesh pad according to embodiment 1 of the present invention;
FIG. 3 is a schematic front view of a three-dimensional node integrated three-dimensional mesh pad according to embodiment 1 of the present invention;
fig. 4 is a schematic perspective view of a two-dimensional planar grid of a three-dimensional node-separated three-dimensional mesh pad according to embodiment 2 of the present invention;
FIG. 5 is a schematic top view of a three-dimensional node-separated three-dimensional mesh pad according to embodiment 2 of the present invention;
fig. 6 is a schematic front view of a three-dimensional node-separated three-dimensional mesh pad according to embodiment 2 of the present invention;
FIG. 7 is a schematic view illustrating the installation of a three-dimensional node-separated three-dimensional mesh pad according to embodiment 2 of the present invention;
FIG. 8 is a schematic view showing the next installation of the three-dimensional node-separated three-dimensional mesh pad according to embodiment 2 of the present invention;
FIG. 9 is a schematic view showing the installation of a three-dimensional node-separated three-dimensional mesh pad according to embodiment 2 of the present invention;
fig. 10 is a schematic perspective view of a three-dimensional mesh mat according to embodiment 3 of the present invention;
FIG. 11 is a perspective view of a three-dimensional grid according to embodiment 3 of the present invention;
FIG. 12 is a schematic perspective view of a three-dimensional node of the present invention;
FIG. 13 is a schematic perspective view of the road engineering spike of the present invention;
in the figure, a two-dimensional plane grid 1, plane grid lines 11, plane grid circular nodes 12 and plane grid meshes 13; three-dimensional node 2, upper bottom circle 21, lower bottom circle 22; the road engineering nails 3 and the round nail caps 31; a nail hole 4; three-dimensional grid 5, spherical three-dimensional grid lines 51, planar connection grid circular nodes 52, three-dimensional grid meshes 53, and planar connection grid lines 54.
Detailed Description
Specific examples of the present invention are given below. The specific examples are provided only for further elaboration of the invention and do not limit the scope of the claims of the present application.
The invention provides a three-dimensional net pad (three-dimensional net pad for short) for repairing a pavement pit slot, which is characterized by comprising a two-dimensional plane grid 1 and three-dimensional nodes 2;
the two-dimensional plane grid 1 comprises plane grid lines 11, plane grid circular nodes 12 and plane grid meshes 13; a plurality of plane grid lines 11 which are regularly arranged are connected with one another to form a plane structure; the intersection points of the plane grid lines 11 are provided with plane grid circular nodes 12, and plane grid meshes 13 are formed at the gaps; all plane mesh openings 13 in the two-dimensional plane mesh 1 are identical; a vertically through nail hole 4 is formed in the center of the circular node 12 of the plane grid and is used for being matched with the road surface engineering nail 3; the width and the length of the two-dimensional plane grid 1 are determined according to the actual pit size and the depth, and the construction is performed by ensuring that the area of the two-dimensional plane grid 1 is enough to be paved on the bottom surface and the side wall of the whole pit.
The three-dimensional node 2 is a three-dimensional structure with a circular bottom surface; the diameter of the circular bottom surface is the same as that of the circular nodes 12 of the plane grid, so that the bottom surface of the three-dimensional node 2 is tightly attached to the circular nodes 12 of the plane grid, and the two-dimensional plane grid 1 is fixed while rolling the repairing material is not affected; a vertically through nail hole 4 is formed in the center of the three-dimensional joint 2 and is used for being matched with the road engineering nail 3;
the two-dimensional plane grid 1 and the three-dimensional node 2 are connected into a whole when manufactured and delivered, and the three-dimensional node 2 is positioned above the plane grid circular node 12 to form a three-dimensional node integral three-dimensional net pad; or the two-dimensional plane grid 1 and the three-dimensional node 2 are respectively molded when manufactured and delivered to form a three-dimensional node separated three-dimensional net pad, and the three-dimensional node 2 is arranged above the plane grid circular node 12 and fixed by the road surface engineering nail 3 during construction.
Preferably, the three-dimensional node integral three-dimensional net pad is tightly connected with the two-dimensional plane grid 1, so that the three-dimensional node 2 and the two-dimensional plane grid are integrally stressed, and the relative displacement between new materials and old materials at the pit slot interface under the driving load is constrained together. The three-dimensional node separation type three-dimensional net pad can enable the two-dimensional plane grid 1 to be better attached to the wall surface (the side wall and the bottom surface of a pit) of the pit, enable the two to be more tightly connected, and improve the compactness of the repairing material to a certain extent when the side wall is paved, so that the contact cohesive force of new and old materials can be better improved by the two-dimensional plane grid 1.
Preferably, the planar grid lines 11 may be elongated or round, and have a width and thickness or diameter of 1 to 5mm so as not to affect the contact area between the repair material and the pavement raw material; the diameter of the planar grid circular nodes 12 is larger than the width or diameter of the planar grid lines 11.
Preferably, the length of the edges surrounding all the edges of each planar mesh 13 is 10 mm-50 mm, so that the size of the planar mesh 13 is not less than 2-3 times of the size of the maximum crushed stone in the repairing material, and the passing and rolling of the maximum crushed stone in the repairing material are facilitated.
Preferably, the shape of the planar mesh 13 may be a regular polygon such as regular polygon, rectangle, isosceles triangle, isosceles right triangle, parallelogram, etc., preferably square and isosceles right triangle.
Preferably, the three-dimensional node 2 adopts a cylinder or a round table to form a three-dimensional cylinder node or a three-dimensional round table node; the diameter of the upper bottom surface circle 21 is d1, the diameter of the lower bottom surface circle 22 is d2, d1 is less than or equal to d2 (preferably d1 is less than or equal to d2 is less than or equal to d1+2mm); the three-dimensional node 2 has a height h1, h1=d2. In this example d1=8 to 10mm.
Preferably, the size of the peg holes 4 at the center of the circular nodes 12 of the planar grid is the same as the size of the peg holes 4 at the center of the three-dimensional nodes 2.
Preferably, the three-dimensional node separation type three-dimensional mesh pad further comprises a three-dimensional grid 5; the three-dimensional grid 5 includes spherical three-dimensional grid lines 51 and plane connection grid lines 54 which are vertically raised upward with smooth surfaces;
the non-convex ends of the spherical three-dimensional grid lines 51 and the planar connection grid lines 54 are integrally formed or connected with each other to form a three-dimensional structure; the space of the spherical three-dimensional grid line 51 is provided with a three-dimensional grid mesh 53; the intersection of the planar connection grid lines 54 has planar connection grid circular nodes 52; a vertically through nail hole 4 is formed in the center of the circular node 52 of the plane connection grid and is used for being matched with the road surface engineering nail 3;
the two-dimensional plane grid 1, the three-dimensional nodes 2 and the three-dimensional grid 5 are respectively formed when manufactured and delivered to the factory to form a three-dimensional net pad of a vertical net type; when in use, the three-dimensional node 2 is positioned above the plane connection grid circular node 52, the plane connection grid circular node 52 is positioned above the plane grid circular node 12, and the three are fixed by the pavement engineering nails 3.
Preferably, the spherical three-dimensional grid lines 51 can provide lateral constraint for the repairing material, firmly cover the repairing material at the wall surface of the pit slot and improve contact adhesion. Compared with the three-dimensional node integral three-dimensional net pad and the three-dimensional node separation three-dimensional net pad, the vertical net type three-dimensional net pad can provide better integral lateral constraint for repairing materials, so that the combination of new and old material interfaces is tighter.
Preferably, the spherical three-dimensional grid lines 51 and the plane connecting grid lines 54 are long or round strips, and the width and the thickness or the diameter are 1-5 mm; the diameter of the planar connection grid circular nodes 52 is greater than the width or diameter of the planar connection grid lines 54.
Preferably, the side length of all sides surrounding each three-dimensional grid mesh 53 is 10 mm-50 mm, so that the size of the three-dimensional grid mesh 53 is not smaller than 2-3 times of the maximum crushed stone size in the repairing material, and the passing and rolling of the maximum crushed stone in the repairing material are facilitated.
Preferably, the shape of the mesh 53 is a regular polygon such as a quadrangle or a triangle.
Preferably, the spherical surface of the spherical three-dimensional grid line 51 is a sphere or an ellipsoid, the protrusion height is a semicircle or a hemi-ellipsoid, and the highest protrusion height is higher than the height h1 of the three-dimensional node 2.
Preferably, the planar connection grid circular nodes 52 are positioned and sized exactly the same as the planar grid circular nodes 12.
Preferably, the size of the peg hole 4 at the center of the planar connection grid circular node 52 is the same as the size of the peg hole 4 at the center of the three-dimensional node 2.
Preferably, the road engineering nails 3 are cement nails or rivets, and the concrete size is based on the construction requirement. The diameter of the road engineering nail 3 is d, and the length is h; d=d1-5 mm, h1 < h/3. In this embodiment, h=30 mm to 50mm, d=3 mm to 5mm, and the diameter of the circular nut 31 is 4mm to 6mm.
Preferably, the diameter of the nail holes 4 is 3mm to 5mm, in particular based on the diameter of the stapled road engineering nails 3.
Preferably, the two-dimensional plane grid 1, the three-dimensional nodes 2 and the three-dimensional stereoscopic grid 5 are made of carbon fiber or glass fiber.
Preferably, the three-dimensional mesh pad can be used for repairing asphalt pavement, concrete pavement and asphalt concrete pavement.
The construction method for repairing the pavement pit based on the three-dimensional net pad (short for construction method) comprises the following steps:
(1) Measuring the range and depth of pit diseases, and determining the size and depth of pit repair:
according to the principle of 'round hole square repair and shallow hole deep repair' in the principle of repairing the pit slot on the road surface, a square slotting contour line is drawn along the parallel or vertical direction of the central line of the road, and the size of the repairing block is preferably 5-30 cm beyond the broken boundary of the pit slot; the repairing depth is based on the principle of damaging the layer, excavating the layer and excavating the bottom of the damaged structural layer, namely, the upper layer is damaged, and then the bottom of the upper layer is excavated; if the middle surface layer is damaged, digging to the bottom of the middle surface layer; if the pit depth reaches the bottom of the lower layer, digging to the bottom of the lower layer.
(2) And (3) excavating and forming: the worn materials in the pit slot area are excavated, the wall surface of the pit slot is required to be perpendicular to the road surface after excavation, and the bottom surface is flat, smooth and solid; thoroughly removing residual old materials and broken stones in and around the pit;
(3) And (3) coating an adhesive layer: coating a layer of adhesive layer on the surfaces of the side wall and the bottom surface of the pit groove to ensure that the adhesive layer is uniform and the thickness is not excessive; generally, SBS modified asphalt with better viscosity or epoxy modified asphalt with better compatibility is selected as a bonding layer material;
preferably, the brushing sequence is that the front side wall and the rear bottom surface are arranged;
(4) Paving and forming: selecting a proper three-dimensional net pad type according to the size and depth of the actual excavation of the pit; when the pit size and depth are smaller, the three-dimensional node integral three-dimensional net pad can be selected, so that the repairing material is convenient to compact and construct; when the pit size and depth are large, the three-dimensional node separation type three-dimensional net pad or the vertical net type three-dimensional net pad can be selected, and the construction compaction of the net pad is facilitated on the premise of not affecting the compactness.
In the first mode, the three-dimensional node integral three-dimensional net pad is adopted for paving and forming:
(4.1) paving a three-dimensional net pad: paving three-dimensional node integral three-dimensional mesh pads on the bottom surface and all side walls of the pit slot, ensuring that the three-dimensional mesh pads are tightly adhered to the bottom surface and the side walls of the pit slot under the action of a bonding layer, and then using the road surface engineering nails 3 to be nailed into nail holes 4 so as to fix the three-dimensional node integral three-dimensional mesh pads on the bottom surface and the side walls of the pit slot, and restricting the movement of the three-dimensional mesh pads under the action of load through the contact of the road surface engineering nails 3 and the three-dimensional nodes 2;
(4.2) filling the repairing material: filling a repairing material into the pit, ensuring uniform paving while filling, and finally scraping the top of the repairing material; the height of the repairing material is 1 cm-3 cm higher than the surrounding pavement;
the second mode is that a three-dimensional node separation type three-dimensional net pad is adopted for paving and forming: in order to ensure the smooth laying of the three-dimensional net pad at the bottom layer of the pit slot while ensuring convenient construction, the laying sequence is a front bottom surface and a rear side surface.
(4.1) paving and forming the bottom surface of the pit and the side wall of the corresponding layer: paving two-dimensional plane grids 1 on the bottom surface and all side walls of the pit slot, and ensuring that the two-dimensional plane grids 1 are tightly attached to the bottom surface and the side walls of the pit slot under the action of a bonding layer; then placing the three-dimensional nodes 2 on all the planar grid circular nodes 12 of the bottom surface of the pit and all the planar grid circular nodes 12 of the side wall of the pit, which are positioned below the height of the three-dimensional nodes 2 of the bottom surface of the pit (in the embodiment, the planar grid circular nodes 12 of the bottommost layer (namely the first layer) of the side wall of the pit); the set three-dimensional nodes 2 and the plane grid circular nodes 12 are fixed on the bottom surface of the pit and the corresponding side walls of the pit by using the pavement engineering nails 3, and then the repairing material is filled into the three-dimensional net pad which completely submerges the bottom surface of the pit;
(4.2) paving and forming the side walls of the rest layers of the pit grooves: placing the three-dimensional nodes 2 on the plane grid circular nodes 12 of the secondary bottom layer (namely the second layer) of the two-dimensional plane grid 1 on the side wall of the pit, fixing the three-dimensional nodes 2 and the plane grid circular nodes 12 of the secondary bottom layer inside the side wall of the pit by using the pavement engineering nails 3, and filling the repairing material into the three-dimensional nodes 2 of the secondary bottom layer; then the third layer is processed by the same method until reaching the top layer; finally, scraping the top of the repairing material; the height of the repairing material is 1 cm-3 cm higher than the surrounding pavement;
in a third mode, a vertical net type three-dimensional net pad (namely, a three-dimensional node separation type three-dimensional net pad with three-dimensional grids) is adopted for paving and forming:
(4.1) paving a three-dimensional net pad: two-dimensional plane grids 1 are paved on the bottom surface and all side walls of a pit slot, after the two-dimensional plane grids 1 are tightly attached to the bottom surface and the side walls of the pit slot under the action of an adhesive layer, three-dimensional solid grids 5 are paved on the bottom surface and all side walls of the pit slot, after plane connection grid round nodes 52 are tightly attached to plane grid round nodes 12 and are opposite in position, three-dimensional nodes 2 are placed on all plane connection grid round nodes 52, and then nails 3 for pavement engineering are used for nailing nail holes 4 to fix the vertical net type three-dimensional net pad on the bottom surface and all side walls of the pit slot;
(4.2) filling the repairing material: filling a repairing material into the pit, ensuring uniform paving while filling, and finally scraping the top of the repairing material; the height of the repairing material is 1 cm-3 cm higher than the surrounding pavement;
(4.1) paving and forming the bottom surface of the pit and the side wall of the corresponding layer: paving two-dimensional plane grids 1 on the bottom surface and all side walls of the pit slot, and ensuring that the two-dimensional plane grids 1 are tightly attached to the bottom surface and the side walls of the pit slot under the action of a bonding layer; then, three-dimensional grids 5 are paved on the bottom surface and all side walls of the pit slot (the bottom surface can realize the paving of the three-dimensional grids 5 through gravity, the side walls can realize the paving of the three-dimensional grids 5 through the unloading clamping force), so that the plane connecting grid circular nodes 52 are tightly attached to the plane grid circular nodes 12 and are opposite in position; then placing the three-dimensional nodes 2 on the planar connection grid circular nodes 52 of the pit bottom surface and all the planar connection grid circular nodes 52 of the pit side wall below the height of the three-dimensional nodes 2 of the pit bottom surface (in the embodiment, the planar connection grid circular nodes 52 of the bottommost layer of the pit side wall); the set three-dimensional nodes 2, the plane connection grid circular nodes 52 and the plane grid circular nodes 12 are fixed on the bottom surface of the pit and the corresponding side wall of the pit by using the road engineering nails 3, and then the repairing material is filled into the vertical net type three-dimensional net pad which completely submerges the bottom surface of the pit;
(4.2) paving and forming the side walls of the rest layers of the pit grooves: placing the three-dimensional nodes 2 on the plane connection grid circular nodes 52 of the secondary bottom layer (namely the second layer) of the three-dimensional grid 5 on the side wall of the pit, fixing the three-dimensional nodes 2, the secondary bottom layer plane connection grid circular nodes 52 and the secondary bottom layer plane grid circular nodes 12 inside the side wall of the pit by using the pavement engineering nails 3, and filling the repairing material into the three-dimensional nodes 2 submerged in the secondary bottom layer; then the third layer is processed by the same method until reaching the top layer; finally, scraping the top of the repairing material; the height of the repairing material is 1 cm-3 cm higher than the surrounding pavement;
preferably, in the step (4), the interval between the adjacent road surface engineering nails 3 is 10 to 100mm.
(5) Compacting: the edge of the pit is compacted by adopting a road roller according to the sequence from the edge to the middle, and then the pit is repeatedly rolled to the middle part in a ring shape, so that the repairing material is ensured to be smooth and is smoothly connected with the original road surface.
Preferably, the road surface is an asphalt road surface, a concrete road surface or an asphalt concrete road surface.
Example 1
The two-dimensional plane grid 1 and the three-dimensional node 2 are connected into a whole when manufactured and delivered, and the three-dimensional node 2 is positioned above the plane grid circular node 12 to form a three-dimensional node integral three-dimensional net pad. As shown in fig. 2, the first-layer planar mesh circular nodes 12 are the 4 lowest layers in fig. 2, and the topmost-layer planar mesh circular nodes 12 are the 4 fourth layers in fig. 2.
The planar grid lines 11 are elongated and have a width of 3mm and a thickness of 2mm. The diameter of the circular nodes 12 of the planar mesh is 10mm. The shape of the planar mesh 13 is square, and the side length is 30mm.
The three-dimensional node 2 adopts a three-dimensional circular truncated cone node, the diameter d1=8 mm of the upper bottom surface circle 21, the diameter d2=10 mm of the lower bottom surface circle 22 and the height h1=10 mm.
The road surface engineering nail 3 adopts rivets, the diameter d=3 mm, the length h=40 mm, the diameter of the round nail cap 31 is 4mm, the thickness of the round nail cap 31 is 1mm, and the transverse and longitudinal intervals of adjacent road surface engineering nails 3 are 33mm.
The nail holes 4 are round, have the diameter of 3mm and penetrate the whole three-dimensional net pad in depth.
Example 2
The two-dimensional plane grid 1 and the three-dimensional nodes 2 are respectively molded when manufactured and delivered to form the three-dimensional node separated three-dimensional net pad. As shown in fig. 5, the lowest (i.e., first layer) planar mesh circular nodes 12 are the 4 lowest layers in fig. 5, and the topmost planar mesh circular nodes 12 are the 4 fourth layers in fig. 5.
The planar grid lines 11 are flat long strips with a width of 3mm and a thickness of 2mm. The diameter of the circular nodes 12 of the planar mesh is 10mm. The shape of the plane grid mesh 13 adopts an isosceles right triangle, the length of a right angle side is 30mm, and the length of a hypotenuse is 42.43mm.
The three-dimensional node 2 adopts a three-dimensional circular truncated cone node, the diameter d1=8 mm of the upper bottom surface circle 21, the diameter d2=10 mm of the lower bottom surface circle 22 and the height h1=10 mm.
The road surface engineering nail 3 adopts cement nails, the diameter d=3 mm, the length h=40 mm, the diameter of the circular nail cap 31 is 4mm, and the thickness of the circular nail cap 31 is 1mm.
The nail holes 4 are round, have the diameter of 3mm and penetrate the whole three-dimensional net pad in depth.
Example 3
The two-dimensional plane grid 1, the three-dimensional nodes 2 and the three-dimensional grid 5 are respectively formed when manufactured and delivered to the factory to form a three-dimensional net pad of a vertical net type;
the planar grid lines 11 are flat long strips with a width of 3mm and a thickness of 2mm. The diameter of the circular nodes 12 of the planar mesh is 10mm. The shape of the planar mesh 13 is square, and the side length is 30mm.
The three-dimensional node 2 adopts a three-dimensional circular truncated cone node, the diameter d1=8 mm of the upper bottom surface circle 21, the diameter d2=10 mm of the lower bottom surface circle 22 and the height h1=10 mm.
The road surface engineering nail 3 adopts cement nails, the diameter d=3 mm, the length h=40 mm, the diameter of the round nail cap 31 is 4mm, the thickness of the round nail cap 31 is 1mm, and the transverse and longitudinal intervals of the adjacent road surface engineering nails 3 are 33mm.
The nail holes 4 are round, have the diameter of 3mm and penetrate the whole three-dimensional net pad in depth.
The spherical solid grid lines 51 and the plane connecting grid lines 54 are circular strips with a diameter of 1mm. The spherical stereoscopic grid lines 51 include 6 arc grid lines and 3 horizontal loop lines; one end of the 6 arc grid lines are converged to one point to be connected with each other, and the other ends of the 6 arc grid lines are connected to 1 horizontal ring line; the other two horizontal loops are connected with 6 arc grid lines and are positioned between the convergence point and the lowest 1 horizontal loop to form small hemispherical, i.e. spherical three-dimensional grid lines 51 which are raised upwards. The height of the protrusions of the spherical three-dimensional grid lines 51 is 20mm, and the diameter of the bottom circle is 42.43mm.
The spherical three-dimensional grid lines 51 form three layers of 18 three-dimensional grid meshes 53; the plane shape generated by the three-dimensional grid meshes 53 at the bottommost layer is a sector ring shape, the lower bottom arc length is 22mm, the upper bottom arc length is 20mm, and the two side sloping sides are 12mm; the three-dimensional grid meshes 53 of the middle layer are in a sector ring shape, the lower bottom arc length is 20mm, the upper bottom arc length is 15mm, and the oblique sides of the two sides are 12mm; the uppermost three-dimensional grid mesh 53 has a fan-shaped planar shape with an arc length of 15mm and two side lengths of 12mm.
The diameter of the circular nodes 52 of the planar connection grid is 10mm and the thickness is 2mm.
The invention is applicable to the prior art where it is not described.
Claims (10)
1. The three-dimensional net pad for repairing the pavement pit slot is characterized by comprising a two-dimensional plane grid (1) and three-dimensional nodes (2);
the two-dimensional plane grid (1) comprises plane grid lines (11), plane grid circular nodes (12) and plane grid meshes (13); a plurality of plane grid lines (11) which are regularly arranged are connected with one another to form a plane structure; the intersection points of the plane grid lines (11) are provided with plane grid circular nodes (12), and plane grid meshes (13) are formed at the gaps; all plane grid meshes (13) in the two-dimensional plane grid (1) are completely identical; a vertically through nail hole (4) is formed in the center of the circular node (12) of the plane grid and is used for being matched with the road surface engineering nail (3);
the three-dimensional node (2) is a three-dimensional structure with a circular bottom surface; the diameter of the circular bottom surface is the same as the diameter of the circular nodes (12) of the plane grid; a vertically through nail hole (4) is formed in the center of the three-dimensional node (2) and is used for being matched with the road engineering nail (3);
the two-dimensional plane grid (1) and the three-dimensional nodes (2) are connected into a whole when manufactured and delivered, and the three-dimensional nodes (2) are positioned above the plane grid circular nodes (12) to form a three-dimensional node integral three-dimensional net pad; or the two-dimensional plane grid (1) and the three-dimensional nodes (2) are respectively molded when manufactured and delivered to the factory to form the three-dimensional node separated three-dimensional net pad, and the three-dimensional nodes (2) are positioned above the two-dimensional plane grid (1) and fixed through the road engineering nails (3) when in use.
2. The three-dimensional mesh pad for repairing a pavement pit according to claim 1, wherein the planar mesh lines (11) are long or round; the diameter of the circular nodes (12) of the planar grid is larger than the width or diameter of the planar grid lines (11).
3. The three-dimensional net pad for repairing pavement pits according to claim 1, wherein the side length of all sides surrounding each planar mesh (13) is 10 mm-50 mm, so that the size of the planar mesh (13) is not smaller than 2 times of the size of the largest broken stone in the repairing material, and the passing and rolling of the largest broken stone in the repairing material are facilitated.
4. The three-dimensional net mat for repairing a pavement pit according to claim 1, wherein the shape of the mesh (13) of the planar mesh is a regular polygon.
5. The three-dimensional net pad for repairing pavement pits according to claim 1, wherein the three-dimensional nodes (2) are cylindrical or round-table-shaped to form three-dimensional cylindrical nodes or three-dimensional round-table nodes; the diameter of the upper bottom surface circle (21) is d1, the diameter of the lower bottom surface circle (22) is d2, and d1 is less than or equal to d2; the three-dimensional node (2) has a height h1, h1=d2.
6. The three-dimensional mesh pad for repairing a pavement pit according to claim 1, wherein the three-dimensional node separation type three-dimensional mesh pad further comprises a three-dimensional mesh (5); the three-dimensional grid (5) comprises raised spherical three-dimensional grid lines (51) and plane connecting grid lines (54);
the non-convex ends of the spherical three-dimensional grid lines (51) and the plane connecting grid lines (54) are integrally formed or connected with each other to form a three-dimensional structure; a three-dimensional grid mesh (53) is formed at the gap of the spherical three-dimensional grid line (51); the intersection points of the plane connection grid lines (54) are provided with plane connection grid circular nodes (52); a vertically through nail hole (4) is formed in the center of the circular node (52) of the plane connection grid and is used for being matched with the road surface engineering nail (3);
the three-dimensional node separation type three-dimensional net pad and the three-dimensional grid (5) are respectively formed when manufactured and delivered to the factory to form a vertical net type three-dimensional net pad; when in use, the three-dimensional node (2) is positioned above the plane connection grid circular node (52), the plane connection grid circular node (52) is positioned above the plane grid circular node (12), and the three are fixed through the road engineering nails (3).
7. The three-dimensional mesh pad for repairing a pavement pit slot according to claim 6, wherein the side length of all sides surrounding each three-dimensional mesh (53) is 10 mm-50 mm, so that the size of the three-dimensional mesh (53) is not smaller than 2 times of the size of the largest broken stone in the repairing material, and the passing and rolling of the largest broken stone in the repairing material are facilitated.
8. The three-dimensional mesh pad for repairing a pit in a road surface according to claim 6, wherein the spherical three-dimensional mesh lines (51) and the plane connecting mesh lines (54) are each in a long or round shape; the diameter of the planar connection grid circular nodes (52) is greater than the width or diameter of the planar connection grid lines (54).
9. The three-dimensional mesh pad for repairing a pavement pit slot according to claim 6, wherein the installation position and the size of the planar connection grid circular node (52) are identical to those of the planar grid circular node (12); the shape of the three-dimensional mesh (53) is a regular polygon.
10. The three-dimensional mesh pad for repairing a pavement pit according to claim 6, wherein the spherical surface of the spherical three-dimensional mesh line (51) is a spherical surface or an ellipsoid, the protrusion height is a semicircle or a hemi-ellipsoid, and the highest protrusion height is higher than the height h1 of the three-dimensional node (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210576964.5A CN114960337B (en) | 2022-05-25 | 2022-05-25 | Three-dimensional net pad for repairing pavement pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210576964.5A CN114960337B (en) | 2022-05-25 | 2022-05-25 | Three-dimensional net pad for repairing pavement pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114960337A CN114960337A (en) | 2022-08-30 |
| CN114960337B true CN114960337B (en) | 2023-05-26 |
Family
ID=82955509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210576964.5A Active CN114960337B (en) | 2022-05-25 | 2022-05-25 | Three-dimensional net pad for repairing pavement pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114960337B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493745A (en) * | 2002-10-28 | 2004-05-05 | 李兰英 | Method of preventing to produce crack on road surface and product |
| CN209384077U (en) * | 2018-12-06 | 2019-09-13 | 福州大学 | A kind of bar planting formula asphalt pavement pit repairing structure |
| CN212270898U (en) * | 2020-04-15 | 2021-01-01 | 广州天羽建筑材料有限公司 | Novel composite geotechnical pad |
| CN214883547U (en) * | 2021-06-16 | 2021-11-26 | 南昌天高环保科技股份有限公司 | Biaxial stretching plastics geogrid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2015204727B2 (en) * | 2014-01-09 | 2018-08-23 | Geoqore, LLC | Three-dimensional aggregate reinforcement systems and methods |
-
2022
- 2022-05-25 CN CN202210576964.5A patent/CN114960337B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493745A (en) * | 2002-10-28 | 2004-05-05 | 李兰英 | Method of preventing to produce crack on road surface and product |
| CN209384077U (en) * | 2018-12-06 | 2019-09-13 | 福州大学 | A kind of bar planting formula asphalt pavement pit repairing structure |
| CN212270898U (en) * | 2020-04-15 | 2021-01-01 | 广州天羽建筑材料有限公司 | Novel composite geotechnical pad |
| CN214883547U (en) * | 2021-06-16 | 2021-11-26 | 南昌天高环保科技股份有限公司 | Biaxial stretching plastics geogrid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114960337A (en) | 2022-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114908656B (en) | Construction method for repairing pavement pit based on three-dimensional mesh pad | |
| CN108547195A (en) | A kind of porous asphalt pavement structure and construction method | |
| CN114960337B (en) | Three-dimensional net pad for repairing pavement pit | |
| CN114370005B (en) | Construction method of long-life bridge deck pavement structure for preventing bridge deck cracks | |
| CN110593090A (en) | Method for repairing bridge expansion joint | |
| CN110965422A (en) | Flexible splicing paving structure and construction method thereof | |
| CN106894319B (en) | Grooving method for cement concrete pavement | |
| CN213896605U (en) | Road surfacing structure | |
| CN211228019U (en) | Road and bridge crack repairing structure | |
| US7021858B2 (en) | Double joints pavement system | |
| CN111705640B (en) | Seamless expansion joint structure for bridge joint treatment and construction process thereof | |
| CN202849886U (en) | Concrete slab road surface structure | |
| CN114319007A (en) | Pavement repairing method | |
| CN209323293U (en) | A kind of asphalt pavement road surface and highway | |
| CN210315221U (en) | Ultra-high performance concrete combined bridge deck structure with large closed ribs | |
| CN206956489U (en) | Repair fixed structure in a kind of road and bridge crack | |
| CN214362659U (en) | Can prevent road and bridge crack of secondary deformation fracture and repair fixed knot and construct | |
| CN111455932A (en) | Laying method of separated building blocks applied to reservoir protection slope | |
| CN214782978U (en) | Anti-fatigue anti-cracking road | |
| JP4010388B2 (en) | High-strength reinforced concrete precast plate | |
| CN218989841U (en) | Pavement crack repair structure | |
| CN112832270B (en) | Self-healing flexible concrete slope protection structure and construction method thereof | |
| CN218026993U (en) | Structure is repaired to airport way panel piece | |
| CN220246651U (en) | Simple structure support and bridge deck continuous disease treatment structure | |
| CN209779375U (en) | Novel asphalt concrete composite pavement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |