CN109537393B

CN109537393B - Municipal works road laying structure

Info

Publication number: CN109537393B
Application number: CN201811545832.6A
Authority: CN
Inventors: 陈向前; 方国平; 张少爱; 陈福家
Original assignee: Zhejiang Kunyu Construction Co ltd
Current assignee: Zhejiang Kunyu Construction Co ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-11-13
Anticipated expiration: 2038-12-18
Also published as: CN109537393A

Abstract

The invention relates to a municipal engineering road laying structure, which sequentially comprises a roadbed, a cushion layer, a subbase layer, an upper base layer and a surface layer, and is characterized in that: the subbase layer comprises frameworks arranged along the cushion layer and connecting pieces laterally connecting the adjacent frameworks, and two ends of each framework are respectively provided with a first fastening unit and a second fastening unit; the combined structure of the first buckling unit and the second buckling unit which are buckled with each other between the adjacent frameworks is embedded in the cushion layer or a groove which is formed by the cushion layer and the roadbed together, and a pipe network channel is formed by enclosing the inside of the combined structure; the road has the advantages of high structural strength of the road, good anti-seismic performance and high safety of a pipe network structure.

Description

Municipal works road laying structure

Technical Field

The invention relates to the field of municipal engineering, in particular to a municipal engineering road laying structure.

Background

In the road construction process, in order to obtain a flat road surface structure, the paved road surface material is generally rolled, and the vehicle can be driven after the pavement material is compacted and leveled. Meanwhile, in order to provide sufficient strength and compressive capacity to the road surface, a multi-layer structure is often used when the road surface is laid.

For example, chinese patent publication No. CN103993534 discloses a "road construction method" which is implemented by spreading rubber asphalt on the surface of an asphalt road surface to form a rubber asphalt layer, laying crushed stone on the rubber asphalt layer to form a crushed stone layer, and then laying an emulsified asphalt layer on the crushed stone layer. Although the road surface having such a structure has good adhesive strength and water resistance, the load-bearing capacity is still insufficient, and cracks are likely to occur when a heavy vehicle passes. Furthermore, because the existing road surface structure is not only a single road, but also often accompanied by crossing with other pipe networks, such as cable networks, natural gas pipelines, tap water pipelines, etc., most of the existing road surface structures are buried under the roadbed, the installation and safety of the internal pipelines also need to be considered when the road is laid.

For example, chinese patent publication No. CN101831859 discloses a "concrete road construction method with built-in passing-through pipeline", which is to lay a layer of steel mesh on the road base, and fill concrete pads under the steel mesh, so as to form protection for the pipe network. However, the connection strength between the protection structure and the road is low, so that the strength of the road surfaces on two sides of the pipe network is inconsistent with that of the road surface on the right upper side of the pipe network, and after a period of time, a fault phenomenon easily occurs, namely, cracks occur between the reinforcing mesh and the road surface layer, so that the quality of road engineering is influenced.

Disclosure of Invention

The invention aims to provide a municipal engineering road laying structure, which solves the problem that the road construction weighing cannot take into account the structural strength of the road and the safety of a pipe network below the road, and achieves the effects of high road structural strength and high pipe network structural safety.

The technical purpose of the invention is realized by the following technical scheme:

a municipal engineering road laying structure sequentially comprises a roadbed, a cushion layer, an underlayer, an upper base layer and a surface layer, wherein the underlayer comprises frameworks arranged along the cushion layer and connecting pieces laterally connecting the adjacent frameworks, and two ends of each framework are respectively provided with a first fastening unit and a second fastening unit; the combined structure of the mutual fastening of the first fastening unit and the second fastening unit between the adjacent frameworks is embedded in the cushion layer or the groove formed by the cushion layer and the roadbed, and a pipe network channel is formed by surrounding the inside of the combined structure.

By adopting the technical scheme, the frameworks are preset on the underlayer, and the frameworks are longitudinally connected, namely the extending direction of the road is completed by the mutual fastening between the first fastening unit and the second fastening unit, and are transversely connected by the connecting piece; forming a connecting network extending in each direction; the stability of the framework structure is kept, the framework and the embedding layer are in limited connection through friction of the contact surface and the groove, and the framework and the upper base layer are in limited connection through the contact surface and gap filling between the frameworks, so that the stability of the layer structures is ensured; a pipe network channel for a cable or a pipeline to pass through is formed between the connecting structures of the frameworks, the channel is positioned in the groove, indirect stress is achieved, the stress is relatively small, and most stress is achieved by the frameworks, so that the safety of a pipe network is guaranteed; the first buckling unit is positioned below the framework, and the connection of the upper base layer relative to the framework is continuous; so as to ensure the continuity of the upper stress; therefore, the safety of the pipe network is ensured, and the structural strength of the road is effectively improved.

The invention is further configured to: the first buckling unit comprises a first connecting plate and a first limiting plate which are arranged on the surface of one side, facing the cushion layer, of the framework in a protruding mode; the second fastening unit comprises a second connecting plate, a second limiting plate and a connecting plate, wherein the second connecting plate is abutted to the surface of the first connecting plate far away from one side of the first limiting plate, the second limiting plate is abutted to the surface of the first limiting plate far away from one side of the first connecting plate, the connecting plate is connected with the second connecting plate and the second limiting plate, and the second connecting plate is fixed with the framework.

Through adopting above-mentioned technical scheme, two lock joint units form relative and the U-shaped or class U-shaped structure that can scarf joint each other, and this kind of containing structure is equivalent to and forms twice pressure at the side and resists structure and balanced upper and lower pressure and bear the structure to form certain sealed water or corrosive liquid, gaseous entering pipe network passageway of preventing, played fabulous guard action.

The invention is further configured to: the framework is arranged close to the inner side surface of the first limiting plate in an inward protruding mode, a first compensation groove is formed between the protruding portion and the first limiting plate, one end of the second limiting plate is bent in an arc shape, and one end of the second limiting plate is abutted to one inner surface of the first compensation groove

Through adopting above-mentioned technical scheme, after the equipment is complete, receive the restriction in first compensation groove, the elastic deformation of first limiting plate and second limiting plate receives the restriction for the skeleton can keep good stability when receiving strong exogenic action, and the single face is contradicted and is then remained certain headspace for its deformation, makes it be unlikely to unable normal assembly.

The invention is further configured to: the second fishplate bar is provided with spacing card protruding towards a side surface protrusion of first fishplate bar, the surface of first fishplate bar be provided with spacing card protruding complex draw-in groove, spacing card protruding includes mutually perpendicular's direction bead and spacing bead, and wherein the direction bead is located one side that spacing bead is close to the second limiting plate end, and the bulge height on the surface of the relative second limiting plate of direction bead and spacing bead reduces to respective tip by both crossing positions gradually.

By adopting the technical scheme, in the process that the first connecting plate slides in along the surface of the second connecting plate, the guide convex ribs are firstly contacted with the outer wall of the first connecting plate and elastically deform on the surface to form avoidance; and at the moment, a smooth concave surface is formed by taking the guide convex rib as the center, before the limiting convex rib abuts against the surface of the first connecting plate, the surface of the first connecting plate is subjected to pre-deformation, the more smooth limiting convex rib can be subjected to further deformation, and the deformed part is reset until the limiting convex rib is matched with the clamping groove; after the first connecting plate is matched, the first connecting plate is difficult to separate due to the lack of guide pre-deformation in the process of outwards separating; therefore, the framework is quickly installed, and the connection stability between the first connecting plate and the second connecting plate is fully ensured; therefore, when the relative frameworks receive the road vibration, the relative frameworks can not shift or shift slightly, and can be automatically corrected, so that the anti-seismic device has good anti-seismic capability.

The invention is further configured to: the top of the crossing one end of the guide convex rib and the limit convex rib is flush with the top of the limit convex rib, and one side of the limit convex rib, which faces the guide convex rib, is a guide surface.

By adopting the technical scheme, the curved surface is uniform in deformation, less in abrasion during installation, and good in structure maintenance.

The invention is further configured to: the surface of the framework, which faces the upper base layer, is provided with meshes in a penetrating way, and the middle parts of the meshes are provided with spheres; the upper base layer is partially embedded in the framework and surrounds the ball body.

By adopting the technical scheme, the mesh can be used for uniformly embedding the material of the upper base layer to strengthen the connection, and simultaneously, the unevenness of the cushion layer part can be resisted in the construction process; after the construction of the ball body is completed, inertia shaking and certain rotational freedom degree can be formed, and the reticular shock absorption structure of the framework is combined, so that the shock generated when an automobile passes through the road surface is eliminated, and the shock resistance of the road surface is improved.

The invention is further configured to: the upper base layer comprises a bottom lifting layer and a bearing layer, the bottom lifting layer is made of a mixture of broken stones, gravel, lime and cement, the diameter of the mixture is less than 5mm, the bottom lifting layer covers the framework, and the thickness of the bottom lifting layer is larger than that of the framework; the bearing layer is made of concrete doped with short steel limit distributed in a disorderly direction.

By adopting the technical scheme, the bottom layer is made of the material with smaller particle size, so that the meshes and the gaps between the spheres and the meshes can be covered and filled more comprehensively, and the adhesion effect between the structures is improved; the steel fibers distributed in the random direction of the bearing layer can effectively prevent the micro cracks in the concrete from expanding and the macro cracks from forming, obviously improves the tensile, bending, impact and fatigue resistance of the concrete, and has better ductility.

The invention is further configured to: the surface of skeleton orientation last basic unit protrusion is provided with the cross-section and is right trapezoid spacing arch, spacing arch uses the skeleton surface as the right angle limit face of place, and the spacing bellied inclined plane orientation diverse of different positions, spacing arch inlays in last basic unit.

Through adopting above-mentioned technical scheme, the connection between skeleton and the last basic unit can be strengthened to spacing arch, and the orientation of diverse can form not equidirectional direction and spacing, and the restrictive can produce little removal promptly to this can offset the vibrations that the car produced when passing through the road surface to a certain extent when promoting the stability between the structure.

The invention is further configured to: the material of the framework is one or a combination of a plurality of light steel, reactive powder concrete and steel fiber concrete, and the material of the first fastening unit and the material of the second fastening unit are both light steel.

Through adopting above-mentioned technical scheme, these several kinds of materials all possess better toughness and shock resistance, and wherein light steel's wearability, ductility are better, can provide spacing protruding enough elastic deformation of card and reset performance.

The invention is further configured to: the connecting piece includes pole portion and the spherical end that the diameter is greater than pole portion, be provided with the caulking groove that supplies the spherical end scarf joint and the via hole that supplies pole portion to pass on the skeleton.

Through adopting above-mentioned technical scheme, the situation that stress concentration appears when the skeleton bears the power in opposite directions can be avoided to spherical end, and its cooperation with the caulking groove can prevent keeping away from each other between the skeleton.

In conclusion, the invention has the following beneficial effects:

1. the pipe network channel is embedded into the groove with secondary stress through the lower embedded part, and the continuity of the upper stress is kept, so that the safety of the pipe network is ensured, and the structural strength of the road is effectively improved;

2. the sub-base layer and the upper base layer can be automatically corrected without deviation or slight deviation when receiving pavement vibration, and have good shock resistance.

Drawings

FIG. 1 is a schematic view of a road-laying structure;

FIG. 2 is a block diagram of a skeleton;

FIG. 3 is a block diagram of another perspective of the skeleton;

fig. 4 is a structural view of the stopper rib.

In the figure, 1, roadbed; 2. a cushion layer; 3. an underlayer; 4. an upper base layer; 5. a surface layer; 11. a groove; 31. a framework; 311. caulking grooves; 312. a via hole; 313. a first fastening unit; 3131. a first receiving plate; 3132. a first limit plate; 314. a second fastening unit; 3141. a second receiving plate; 3142. a second limiting plate; 3143. connecting plates; 315. a first compensation groove; 316. limiting clamping protrusions; 3161. a guide rib; 3162. a limiting convex rib; 317. a card slot; 318. mesh openings; 32. a limiting bulge; 33. a connecting member; 34. a sphere; 35. a pipe network channel; 41. starting a bottom layer; 42. a receiving layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A municipal engineering road paving structure comprises a roadbed 1, a cushion layer 2, a subbase layer 3, an upper base layer 4 and a surface layer 5 in sequence as shown in figure 1.

The roadbed 1 is excavated at certain intervals to form a groove 11, and the cushion layer 2 is paved on the surfaces of the roadbed 1 and the groove 11 by gravel.

Referring to fig. 1 and 2, the sub-base layer 3 includes the frameworks 31 arranged along the cushion layer 2 and the connecting pieces 33 laterally connecting the adjacent frameworks 31, the connecting pieces 33 include a rod 331 and a spherical end 332 with a diameter larger than that of the rod 331, and the frameworks 31 are provided with caulking grooves 311 for the spherical end 332 to be embedded and through holes 312 for the rod to pass through.

Referring to fig. 1 and 3, a first fastening unit 313 and a second fastening unit 314 are respectively disposed at two ends of the frame 31; the material of the framework 31 is one or a combination of a plurality of light steel, reactive powder concrete and steel fiber concrete, and the material of the first fastening unit 313 and the material of the second fastening unit 314 are both light steel. The combined structure that the first fastening unit 313 and the second fastening unit 314 between the adjacent frameworks 31 are fastened to each other is embedded in the groove 11 formed by the cushion layer 2 and the roadbed 1, and surrounds and forms the pipe network channel 35 inside.

The first fastening unit 313 includes a first fastening plate 3131 and a first stopper plate 3132 protrudingly disposed on one side surface of the frame 31 facing the mat 2. The second fastening unit 314 includes a second connection plate 3141, a second limit plate 3142, and a connection plate 3143 connecting the second connection plate 3141 and the second limit plate 3142, one end of the second limit plate 3142 is curved in an arc shape, and the second connection plate 3141 is fixed to the frame 31. The two fastening units are formed into U-shaped structures that are opposite to each other and can be engaged with each other, wherein the first fastening unit 313 is embedded in the second fastening unit 314, and the outer wall of the first fastening unit 313 abuts against the inner wall of the second fastening unit 314. The frame 31 protrudes inward near the inner surface of the first stopper plate 3132, and the protruding portion forms a first compensation groove 315 with the first stopper plate 3132, and one end of the second stopper plate 3142 abuts against one of the inner surfaces of the first compensation groove 315.

Referring to fig. 3 and 4, a stopper protrusion 316 is protrudingly provided on a surface of the second contact plate 3141 facing a side of the first contact plate 3131, and a catching groove 317, which is fitted with the stopper protrusion 316, is provided on a surface of the first contact plate 3131. The limit stopper protrusion 316 includes a guide protrusion 3161 and a limit protrusion 3162 that are perpendicular to each other, wherein one side of the limit protrusion 3162 facing the guide protrusion 3161 is a guide surface, the guide protrusion 3161 is located on one side of the limit protrusion 3162 near the end of the second limit plate 3142, the top of the intersecting end of the guide protrusion 3161 and the limit protrusion 3162 is flush with the top of the limit protrusion 3162, and the protruding heights of the guide protrusion 3161 and the limit protrusion 3162 relative to the surface of the second limit plate 3142 are gradually reduced from the intersecting position to the respective end.

Referring to fig. 1 and 2, the skeleton 31 is provided with meshes 318 extending through the surface of the upper base layer 4, and is provided with a limiting protrusion 32 having a right trapezoid cross section. The middle part of the mesh 318 is provided with a ball 34; the upper substrate 4 is partially embedded in the skeleton 31 and surrounds the ball 34. Spacing arch 32 uses skeleton 31 surface as the face of right angle limit place, and the inclined plane orientation diverse of the spacing arch 32 of different positions, and spacing arch 32 inlays in upper substrate 4.

The upper base layer 4 comprises a bottom layer 41 and a bearing layer 42, the bottom layer 41 is made of a mixture of crushed stone, gravel, lime and cement with the diameter of less than 5mm, the bottom layer 41 covers the framework 31, and the thickness of the bottom layer is larger than that of the framework 31; the receiving layer 42 is concrete doped with short steel stops distributed disorderly.

The construction steps are as follows:

step S1, finishing the roadbed 1, removing all the floating soil and sundries on the roadbed 1 surface, watering and wetting, excavating the concentrated wire or pipe passing sections of the roadbed 1 at intervals of 2-8m along the vertical direction to the road surface to form grooves 11, wherein the specific spacing distance, the depth and the width of the grooves 11 are determined according to the actual wiring, pipe density and size; after the excavation is finished, a supporting template is filled in the groove 11 to prevent the subsequent process from generating local collapse;

step S2, paving the cushion layer 2, automatically discharging the mixture of the cushion layer 2 of gravel and broken stones according to the using amount per square meter through a material transporting vehicle, paving the mixture by a grader to realize the purpose of paving while discharging, and coordinating the discharging speed with the paving speed; after paving, finding out unqualified road sections, adding the material in time, and leveling and shaping; the automatic discharge per square meter is increased after leaving the section of the wire or pipe passing section;

step S3, template adjustment, namely, after the land leveler leaves the area where the groove 11 is located, turning the supporting template in the groove 11, pouring the mixed clinker above the template into the groove 11, paving uniformly, embedding the template into the groove 11 again and pressing the supporting template on the mixture of the cushion layer 2;

step S4, performing preliminary rolling, starting rolling when the roller is spread for 30-70m, stabilizing the pressure for 1-2 times by using a vibratory roller without hanging vibration, and then rolling for 2-3 times by hanging vibration; rolling the straight line segment from the roadside at two sides to the center of the road or from the side with low transverse gradient to the side with high transverse gradient, wherein the rolling range is 5CM wider than the edge of the base layer, the width of the straight line segment is 1/3 wheels in an overlapping mode during rolling, and the rolling speed is 1.4-1.5 Km/h;

step S5, installing the framework 31, taking out the supporting template, and installing the framework 31, wherein the two ends of the framework 31 are respectively provided with a first buckling unit 313 and a second buckling unit 314; the combined structure of the first fastening unit 313 and the second fastening unit 314 between the adjacent frameworks 31, which are fastened with each other, is embedded in the groove 11, and surrounds the pipe network channel 35 inside to form a pipe network, and meanwhile, the pipe network is distributed in the pipe network channel 35;

step S6, supplementing materials, namely supplementing a mixture of the front and rear cushions 2 in the section where the framework 31 is located so that the front and rear cushions 2 are equal in height to the framework 31 and have no gaps; to form an underlayer 3;

step S7, secondary paving, namely, automatically discharging the mixed clinker of the cement concrete or the asphalt concrete mixture or the asphalt macadam mixture according to the dosage per square meter through a material transporting vehicle, paving by a grader while discharging, and coordinating the discharging speed with the paving speed; after paving, finding out unqualified road sections, adding the material in time, and leveling and shaping;

step S8, rolling for the second time, starting rolling when 50-60m is paved, taking the corresponding section as a rolling section, and during rolling, adopting a road roller to perform static pressure once, wherein the speed is controlled to be 1.5-2.0 km/h, and the rear wheel is overlapped for 1/2 wheel widths; performing micro-vibration rolling once again, wherein the speed is controlled to be 2.0-2.5 km/h, and the wheel width is overlapped 1/3; then rolling for 3 times by using a vibratory roller with the vibration power of 18t, wherein the rolling speed is 2.5-3.0 km/h, overlapping for 40cm, and finally performing static pressing on a polished surface; to form the upper base layer 4 and the face layer 5.

And (4) maintaining, namely after rolling, performing film covering, moisturizing and health preserving, then watering and maintaining for 3-6 days every 24 hours, and then maintaining for 3-5 days without watering.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a municipal works road pavement structure, includes road bed (1), bed course (2), subbase (3), last basic unit (4) and surface course (5) in proper order, characterized by: the subbase layer (3) comprises frameworks (31) arranged along the cushion layer (2) and connecting pieces (33) laterally connecting the adjacent frameworks (31), and a first fastening unit (313) and a second fastening unit (314) are respectively arranged at two ends of each framework (31); the combined structure that a first buckling unit (313) and a second buckling unit (314) between adjacent frameworks (31) are buckled with each other is embedded in the cushion layer (2) or a groove (11) formed by the cushion layer (2) and the roadbed (1) together, and a pipe network channel (35) is formed in the combined structure in a surrounding mode; the skeleton (31) is provided with meshes (318) in a penetrating way towards the surface of the upper base layer (4), and the middle part of each mesh (318) is provided with a sphere (34); the upper base layer (4) is partially embedded in the framework (31) and surrounds the ball body (34).

2. The municipal engineering road paving structure according to claim 1, wherein: the first buckling unit (313) comprises a first connecting plate (3131) and a first limiting plate (3132), wherein the first connecting plate and the first limiting plate are convexly arranged on one side surface, facing the cushion layer (2), of the framework (31); the second buckling unit (314) comprises a second connecting plate (3141) abutted with the surface of one side, away from the first limiting plate (3132), of the first connecting plate (3131), a second limiting plate (3142) abutted with the surface of one side, away from the first connecting plate (3131), of the first limiting plate (3132), and a connecting plate (3143) connecting the second connecting plate (3141) and the second limiting plate (3142), wherein the second connecting plate (3141) is fixed with the framework (31).

3. The municipal engineering road paving structure according to claim 2, wherein: the inner side surface of the framework (31) close to the first limiting plate (3132) protrudes inwards, a first compensation groove (315) is formed between the protruding part and the first limiting plate (3132), one end of the second limiting plate (3142) is bent in an arc shape, and one end of the second limiting plate (3142) is abutted against one inner surface of the first compensation groove (315).

4. The municipal engineering road paving structure according to claim 2, wherein: the protruding spacing calorie of protruding (316) that is provided with of second fishplate bar (3141) side surface towards first fishplate bar (3131), the surface of first fishplate bar (3131) is provided with spacing calorie of protruding (316) complex draw-in groove (317), spacing calorie of protruding (316) is including mutually perpendicular's guiding rib (3161) and spacing bead (3162), and wherein guiding rib (3161) are located one side that spacing bead (3162) are close to second limiting plate (3142) end, and guiding rib (3161) and the protruding height on the relative second limiting plate (3142) surface of spacing bead (3162) by both crossing position to respective tip reduce gradually.

5. The municipal engineering road paving structure according to claim 4, wherein: the top of the intersecting end of the guide rib (3161) and the limit rib (3162) is flush with the top of the limit rib (3162), and one side of the limit rib (3162) facing the guide rib (3161) is a guide surface.

6. The municipal engineering road paving structure according to claim 1, wherein: the upper base layer (4) comprises a bottom lifting layer (41) and a bearing layer (42), the bottom lifting layer (41) is made of a mixture of broken stones, gravel, lime and cement with the diameter smaller than 5mm, the bottom lifting layer (41) covers the framework (31) and is thicker than the framework (31); the bearing layer (42) is made of concrete doped with short steel limit distributed disorderly.

7. The municipal engineering road paving structure according to claim 1, wherein: skeleton (31) are provided with spacing arch (32) that the cross-section is right trapezoid towards the surface protrusion of upper base layer (4), spacing arch (32) use skeleton (31) surface as right angle limit place face, and the inclined plane of the spacing arch (32) of different positions towards the diverse, spacing arch (32) inlay in upper base layer (4).

8. The municipal engineering road paving structure according to claim 1, wherein: the material of the framework (31) is one or a combination of a plurality of light steel, reactive powder concrete and steel fiber concrete, and the material of the first fastening unit (313) and the material of the second fastening unit (314) are both light steel.

9. The municipal engineering road paving structure according to claim 1, wherein: connecting piece (33) are greater than the spherical end of pole portion including pole portion and diameter, be provided with caulking groove (311) that supply the spherical end scarf joint and supply via hole (312) that pole portion passed on skeleton (31).