CN112112024A - Pavement slab and pavement construction method - Google Patents

Abstract

The invention provides a pavement slab and a pavement construction method, comprising a pavement slab body and a reinforcement framework arranged inside the pavement slab body; the cross section of the side wall of the road slab body is a straight cross section; the side wall sections of the road deck plate body are respectively a first side wall section, a second side wall section, a third side wall section and a fourth side wall section; a first concave structure is arranged on the section of the second side wall, and a first convex structure is arranged on the section of the fourth side wall; the first concave structure is opposite to the first convex structure in position, and the shape and the size of the first concave structure are the same as those of the first convex structure; a second concave structure and a second convex structure are arranged on the section of the third side wall; the second concave structure and the second convex structure are the same in shape and size. The invention can solve the problems that the existing fabricated concrete pavement is completed in a prefabricating mode, the pavement integrity is insufficient, the site secondary hoisting is needed in the construction, the operation is inconvenient, and the like.

Description

Pavement slab and pavement construction method

Technical Field

The invention relates to the technical field of road construction, in particular to a road slab and a construction method of a road surface.

Background

Concrete road surfaces generally adopt two construction modes, namely a cast-in-place construction mode and an assembly construction mode. The cast-in-place concrete pavement is the most common construction mode, does not need secondary operation after on-site completion, but has the problems of difficult repair, inconvenient removal after use, easy generation of a large amount of construction wastes and the like. The existing fabricated concrete pavement slab can solve the problems of the cast-in-place concrete pavement.

The plane of the existing fabricated concrete pavement slab is mostly rectangular, and in order to improve the lap joint capacity between the slabs, occlusion interfaces are often arranged at the edge of the pavement slab or connecting parts are arranged between the slabs, and the pavement slab is difficult to cast in situ due to the connection modes and can only be completed through a prefabrication mode, and the construction needs to be carried out on-site secondary hoisting. The existing main assembly type pavement technical scheme comprises three types, namely a standard block type pavement, an engagement type pavement and a concave embedded pavement.

1. Standard block type

The existing standard block type fabricated pavement slab is a cuboid standard block, continuous reinforcement is not arranged between the pavement slabs, the slabs are poorly joined, the slab integrity is not strong, the pavement evenness is not high, and the traveling effect is not good.

2. Engaging and recessed type

Although the problem of road surface wholeness has been solved to current engaged type and concave assembled pavement slab, there is recess or protrusion in the pavement slab lateral wall, and the construction template cross section is tortuous great, is difficult to carry out cast-in-place preparation in situ, can't demolish the template after the construction, consequently can only be through mill's prefabrication, needs secondary hoist and mount operation, can not effectively improve the efficiency of construction, and because of the plate avris is irregular, it is comparatively inconvenient to change the plate moreover.

In conclusion, although the existing fabricated concrete pavement slab can solve the problems of the cast-in-place concrete pavement, the fabricated concrete pavement slab is completed in a prefabricating mode, the integrity of the pavement is not enough, the fabricated concrete pavement slab needs to be hoisted secondarily on site in construction, and the fabricated concrete pavement slab is inconvenient to operate.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a pavement slab and a pavement construction method, so as to solve the problems that the existing fabricated concrete pavement is completed in a prefabrication manner, the integrity of the pavement is insufficient, secondary hoisting is required on site during construction, and the operation is inconvenient.

The invention provides a pavement slab, which comprises a pavement slab body and a reinforcement framework arranged inside the pavement slab body; the road surface plate body is a cuboid plate body, and the section of the side wall of the road surface plate body is a straight section; the side wall sections of the road deck plate bodies are respectively a first side wall section, a second side wall section adjacent to the first side wall section, a third side wall section opposite to the first side wall section and a fourth side wall section opposite to the second side wall section; a first concave structure is arranged on the section of the second side wall, and a first convex structure is arranged on the section of the fourth side wall; the first concave structure is opposite to the first convex structure in position, and the shape and the size of the first concave structure are the same as those of the first convex structure; a second concave structure and a second convex structure are arranged on the section of the third side wall; the second concave structure and the second convex structure are the same in shape and size; the reinforcing rib framework comprises two layers of reinforcing rib frameworks which are arranged inside the road panel body.

In addition, preferably, the first concave structure and the first convex structure are both trapezoidal in shape.

In addition, preferably, the second concave structure and the second convex structure are both trapezoidal in shape; and a side is arranged between the second concave structure and the second convex structure and is a shared side.

Preferably, the first concave structure, the first convex structure, the second concave structure, and the second convex structure are all the same in shape and size.

Furthermore, it is preferable that the first concave structure is provided in a middle portion of the second sidewall section; the first male structure is disposed in a middle of the fourth sidewall cross-section.

In addition, the preferable scheme is that the two layers of reinforcement frameworks have the same structure; each layer of reinforcement framework comprises a rib net formed by staggered arrangement of transverse ribs and longitudinal ribs; moreover, corner ribs and edge ribs are arranged on the rib net; the corner ribs are arranged on corners of the road panel body; the edge ribs are arranged on the edges of the road surface plate body.

In addition, the preferable scheme is that at least two hoisting buckles are arranged on the upper surface of the road slab body; the hoisting buckle is fixed on the reinforcement framework close to the upper surface.

In addition, the preferable scheme is that a hoisting buckle groove is arranged on the upper surface of the road slab body; the hoisting buckle is arranged in the hoisting buckle groove, and the top of the hoisting buckle is flush with the upper surface.

The invention provides a pavement construction method, which utilizes the pavement slab to carry out pavement construction and comprises the following steps:

carrying out roadbed treatment on a pavement to be constructed to obtain a road base layer structure;

laying geotextile on the road base layer structure;

according to a preset lofting and marking position, laying construction templates for the cast-in-place road panels on the geotextile, laying polystyrene boards among the construction templates, laying geotextile on the polystyrene boards, and fixing to obtain a pouring area of the road panels;

building two layers of reinforcement frameworks in the pouring area of the road deck;

in the pouring area of the road deck, pouring the road deck between the two layers of reinforcement frameworks to obtain a primary road surface;

and maintaining the pavement of the primary pavement and removing the template to obtain the construction pavement.

In addition, preferably, after obtaining the construction road surface, the method further comprises:

carrying out roadbed treatment on the new road surface to be constructed to obtain a new road base layer structure;

lofting and scribing are carried out on the new road base structure to obtain a roadbed to be paved;

before the roadbed to be paved is solidified, paving the road deck separated from the construction road surface on the roadbed to be paved, and fixing to obtain a new primary road surface;

and maintaining and filling the new primary pavement to obtain the recycled construction pavement.

According to the technical scheme, the road surface plate and the construction method of the road surface can simultaneously meet two working conditions of cast-in-place use and reuse through the road surface plate body and the reinforcement frame arranged in the road surface plate body, and simultaneously solve the problems that the cast-in-place concrete road surface is difficult to repair and cannot be reused and the traditional assembly type road surface can only complete construction operation needing secondary hoisting in a prefabricating mode; through the design of the first concave structure and the first convex structure as well as the design of the second concave structure and the second convex structure, the same pavement boards can be mutually buckled, the buckling tightness among the pavement boards is ensured, and the integrity of the pavement boards is improved; the cross section of the side wall of the road slab body is a straight cross section, so that the slab can be conveniently replaced.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic structural diagram of a road deck according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the interior of a road deck according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of the side of a road deck according to an embodiment of the invention;

FIG. 4 is a schematic view of a fastening structure between road boards according to an embodiment of the present invention;

fig. 5 is a flowchart of a construction method of a road surface according to an embodiment of the present invention.

In the attached drawings, 1-pavement slab body, 11-first side wall section, 12-second side wall section, 121-first concave structure, 13-third side wall section, 131-second concave structure, 132-second convex structure, 14-fourth side wall section, 141-first convex structure, 15-upper plane, 16-lower plane, 21-upper layer reinforcement framework, 211-transverse rib, 212-longitudinal rib, 213-corner rib, 214-side rib, 22-lower layer reinforcement framework, 3-hoisting buckle and 31-hoisting buckle slot.

The same reference numbers in all figures indicate similar or corresponding features or functions.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.

Aiming at the problems that the prior fabricated concrete pavement is finished in a prefabricating mode, the integrity of the pavement is insufficient, secondary hoisting is needed on site in construction, the operation is inconvenient and the like, a pavement slab and a pavement construction method are provided.

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In order to explain the construction method of the pavement slab and the pavement provided by the invention, fig. 1 shows the structure of the pavement slab of the embodiment of the invention; fig. 2 shows the structure of the inside of a road deck of an embodiment of the present invention; fig. 3 shows an internal structure of a road deck side of an embodiment of the present invention; fig. 4 shows a structure for fastening between the road boards according to the embodiment of the present invention.

As shown in fig. 1 to 4, the road deck provided by the invention comprises a road deck plate body 1 and a reinforcement frame arranged inside the road deck plate body 1; the road surface plate body 1 is a cuboid plate body, and the section of the side wall of the road surface plate body 1 is a straight section; the side wall sections of the road deck plate body 1 are a first side wall section 11, a second side wall section 12 adjacent to the first side wall section 11, a third side wall section 13 opposite to the first side wall section 11 and a fourth side wall section 14 opposite to the second side wall section 13, respectively; a first concave structure 121 is provided on the second sidewall section 12 and a first convex structure 141 is provided on the fourth sidewall section 14; the first concave structure 121 is opposite to the first convex structure 141, and the shape and size of the first concave structure 121 are the same as those of the first convex structure 141; a second concave structure 131 and a second convex structure 132 are provided on the third sidewall section 13; the second concave structure 131 and the second convex structure 132 have the same shape and size; the reinforcement framework comprises two layers of reinforcement frameworks which are arranged inside the road surface plate body.

Wherein, the two layers of reinforcement frameworks are respectively an upper layer reinforcement framework 21 close to the upper plane 15 of the road deck plate body 1 and a lower layer reinforcement framework 22 close to the lower plane 16 of the road deck plate body 1.

The two working conditions of cast-in-place use and repeated use can be simultaneously met through the pavement slab body 1 and the reinforcement frame arranged in the pavement slab body, and the problems that the cast-in-place concrete pavement is difficult to repair and cannot be repeatedly used and the traditional fabricated pavement can only complete secondary hoisting construction operation in a prefabricating mode are solved; through the design of the first concave structure 121 and the first convex structure 141, and the second concave structure 131 and the second convex structure 132, the same road boards can be mutually buckled, the buckling tightness among the road boards is ensured, and the integrity of the road boards is improved; the cross section of the side wall of the road slab body is a straight cross section, so that the slab can be conveniently replaced.

Wherein, the road slab body 1 is preferably a concrete road slab made of concrete with the mark number not less than C35; concrete road slabs are common road slabs; the thickness of the road plate body 1 is not less than 24 cm. The pavement slab 1 is preferably a pavement slab having a length of 2.2m, a width of 1.9m and a thickness of 0.24 m. Two road deck plate bodies 1 can form the concrete road section of 4m wide after the lock, and the mutual lock of road deck board can realize that the plate is mutual to be linked up, forms 4m wide road surface.

In a preferred embodiment of the present invention, the first concave structure 121 and the first convex structure 141 are both trapezoidal in shape. The concave-convex structure of the trapezoidal structure can make the splicing gap between the road panels tighter, and certainly, the concave-convex structure and the convex-concave structure can be designed into the first concave structure and the first convex structure of other shapes, such as circular, rectangular, square, etc., as long as it can be ensured that when two road panels are spliced and fastened, the first convex structure of one road panel can be tightly fastened with the first concave structure of the other road panel (as shown in fig. 4).

As a preferred aspect of the present invention, the second concave structure 131 and the second convex structure 132 are both trapezoidal in shape; moreover, a side between the second concave structure 131 and the second convex structure 132 is a common side. There is a limit for sharing between second concave structure 131 and the protruding type structure 132, on the one hand, makes to add man-hour more convenient, on the other hand, the concatenation between two road plates of being convenient for. When two road panels are spliced and fastened, the second convex structure of one road panel is tightly fastened with the second concave structure of the other road panel, and of course, the second concave structure 131 and the second convex structure 132 may be in any other shape, such as circular, rectangular, square, etc.

As shown in fig. 4, when the road panels are assembled and spliced together, taking a road panel as an example, the first side wall section 11 is taken as the edge of the road surface, and the other three side wall sections are assembled and spliced together with the other three road panels, specifically, the first concave structure 121 of the second side wall section 12 is assembled and spliced together with the first convex structure of one of the three road panels, the first convex structure 141 of the fourth side wall section 14 is assembled and spliced together with the first concave structure of one of the three road panels, and the second concave structure 131 and the second convex structure 132 of the third side wall section 13 are respectively assembled and spliced together with the second convex structure and the second concave structure of one of the three road panels.

In a preferred embodiment of the present invention, the first concave structure 121, the first convex structure 141, the second concave structure 131, and the second convex structure 132 have the same shape and size. This design can make the whole more level and smooth of road surface of laying, the concave-convex structure's of being convenient for processing moreover, use with the grinding apparatus of the same race can.

As a preferred aspect of the present invention, the first concave structure 121 is disposed at the middle of the second sidewall section 12; the first male structure 141 is provided in the middle of the fourth side wall section 14. The road slab is convenient to buckle, and gaps between the road slabs are more orderly.

As the preferred scheme of the invention, the two layers of reinforcement frameworks have the same structure; each layer of reinforcement framework comprises a rib net formed by staggered arrangement of transverse ribs and longitudinal ribs; moreover, the rib net is provided with corner ribs and edge ribs; the angle ribs are arranged on the corners of the road panel body 1; the edge rib is arranged on the edge of the road surface plate body 1. The upper layer reinforcement framework 21 is taken as an example and comprises a rib net formed by staggered arrangement of transverse ribs 211 and longitudinal ribs 212; the rib net is provided with corner ribs 213 and edge ribs 214; the corner ribs 213 are arranged at the corners of the upper plane 15 of the road deck plate body 1; the edge ribs 214 are arranged on the edges of the upper plane 15 of the road-deck plate body 1. The reinforcement framework is firmer through the transverse ribs 211, the longitudinal ribs 212, the corner ribs 213 and the edge ribs 214, and pouring molding of the road slab is facilitated. The specific structure of the lower reinforcement frame 22 is the same as the specific structure of the upper reinforcement frame 21, and is not described herein again. Wherein, the transverse bar, the longitudinal bar, the corner bar and the edge bar are preferably steel bars with the diameter of 12 mm.

As a preferred scheme of the invention, at least two hoisting buckles 3 are arranged on the upper surface of the road slab body; the hoisting buckle 3 is fixed on the reinforcement framework close to the upper surface, namely on the upper-layer reinforcement framework 21. The road slab is convenient to hoist through the hoisting buckle 3.

As a preferred scheme of the invention, a hoisting buckle slot 31 is arranged on the upper surface of the road slab body 1; the hoisting buckle 3 is arranged in the hoisting buckle slot 31, and the top of the hoisting buckle 31 is flush with the upper surface. The road slab is more convenient to hoist by arranging the hoisting buckle slot 31.

As a preferred embodiment of the present invention, a flexible base material is provided on the bottom of the road deck plate body 1. The flexible base material is preferably geotextile, so that the road surface plates can be conveniently stripped from the road base structure, and the polystyrene board and the geotextile are arranged between two adjacent road surface plates, so that the concrete road surface plates can be conveniently detached and hoisted.

Fig. 5 shows a flow of a construction method of a road surface according to an embodiment of the present invention.

As shown in fig. 5, the method for constructing a road surface according to the present invention, which uses the above-mentioned road surface slab for road surface construction, comprises the following steps:

and S110, performing roadbed treatment on the road surface to be constructed to obtain a road roadbed structure.

The road base structure adopts a 20cm thick cement stabilized graded broken stone base; the whole method comprises the steps of cast-in-place soil pavement slab, 20cm thick cement stabilized graded broken stone and roadbed compaction (the compaction degree is more than or equal to 95%).

And S120, paving geotextile on the road base layer structure.

Through geotechnique's cloth, the pavement slab of being convenient for peels off with road basic unit structure.

S130, according to the preset lofting and marking positions, laying construction templates for cast-in-place road panels on the geotextile, laying polystyrene boards among the construction templates, laying geotextile on the polystyrene boards, and fixing to obtain the pouring areas of the road panels.

Laying out and marking off a road base layer structure according to design requirements, laying out and marking off according to the specifications of road deck components, determining the laying sequence and direction of the road decks, laying construction templates for cast-in-place road decks according to the laying-out and marking-off positions, fixing, laying polystyrene boards among the construction templates according to the laying-out and marking-off positions, fixing, laying geotextile on the polystyrene boards, and obtaining the pouring area of the road decks.

And S140, building two layers of reinforcement frameworks in the pouring area of the road slab.

Performing steel bar ligation and fixation of the lower layer reinforcement framework in the pouring area of each pavement slab; and then, tying and fixing the reinforcing steel bars of the upper-layer reinforcement framework in the pouring area of each pavement slab, and installing and fixing hoisting buckles in the pouring area of each pavement slab.

S150, pouring the pavement slab between the two layers of reinforcement frameworks in the pouring area of the pavement slab to obtain a primary pavement.

The concrete pouring is carried out between the upper layer reinforcement framework and the lower layer reinforcement framework, so that a primary pavement formed by the pavement slab is formed.

And S160, carrying out pavement maintenance and template removal on the primary pavement to obtain a construction pavement.

C35 concrete is cast in place in the pouring area of each pavement slab, and curing is carried out according to the curing period, and steam curing treatment can be adopted if necessary. And (4) after the concrete blocks are cured, removing the template. After the concrete block is cured, the rest irregular parts are filled with cast-in-place concrete, and asphalt cement and other materials are filled in the positions with gaps among the road slabs.

By adopting the pavement slab provided by the invention, in the process of pavement construction, two working conditions of cast-in-place use and repeated use can be simultaneously met through the pavement slab body 1 and the reinforcement frame arranged in the pavement slab body. The construction method is a cast-in-place construction condition, the construction method is simple, and the flatness of the formed pavement is high.

As a preferable aspect of the present invention, after obtaining the construction road surface, the method further includes:

carrying out roadbed treatment on the new road surface to be constructed to obtain a new road base layer structure;

lofting and scribing are carried out on the new road base structure to obtain a roadbed to be paved;

before the roadbed to be paved is solidified, paving a pavement slab separated from the construction pavement on the roadbed to be paved, and fixing to obtain a new primary pavement;

and carrying out pavement maintenance and filling on the new primary pavement to obtain the recycling construction pavement.

By adopting the road slab provided by the invention, when the road slab needs to be recycled, the road slab on the construction road surface can be simply and conveniently recycled by the method.

According to the road surface plate and the construction method of the road surface, the two working conditions of cast-in-place use and reuse can be simultaneously met through the road surface plate body and the reinforcement frame arranged in the road surface plate body, and meanwhile, the problems that the cast-in-place concrete road surface is difficult to repair and cannot be reused and the traditional assembly type road surface can only complete construction operation needing secondary hoisting in a prefabricating mode are solved; through the design of the first concave structure and the first convex structure as well as the design of the second concave structure and the second convex structure, the same pavement boards can be mutually buckled, the buckling tightness among the pavement boards is ensured, and the integrity of the pavement boards is improved; the cross section of the side wall of the road slab body is a straight cross section, so that the slab can be conveniently replaced.

The road surface slab and the construction method of the road surface proposed according to the present invention are described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications may be made to the pavement slab and the pavement construction method proposed by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.

Claims (10)

1. A road deck is characterized by comprising a road deck plate body and a reinforcement framework arranged inside the road deck plate body; wherein,

the road surface plate body is a cuboid plate body, and the section of the side wall of the road surface plate body is a straight section; the side wall sections of the road deck plate bodies are respectively a first side wall section, a second side wall section adjacent to the first side wall section, a third side wall section opposite to the first side wall section and a fourth side wall section opposite to the second side wall section;

a first concave structure is arranged on the section of the second side wall, and a first convex structure is arranged on the section of the fourth side wall; the first concave structure is opposite to the first convex structure in position, and the shape and the size of the first concave structure are the same as those of the first convex structure;

a second concave structure and a second convex structure are arranged on the section of the third side wall; the second concave structure and the second convex structure are the same in shape and size;

the reinforcing rib framework comprises two layers of reinforcing rib frameworks which are arranged inside the road panel body.

2. The road deck according to claim 1,

the first concave structure and the first convex structure are both trapezoidal in shape.

3. The road deck according to claim 1,

the second concave structure and the second convex structure are both trapezoidal in shape; and,

a side is arranged between the second concave structure and the second convex structure and is a shared side.

4. The road deck according to claim 1,

the first concave structure, the first convex structure, the second concave structure and the second convex structure are the same in shape and size.

5. The road deck according to claim 1,

the first concave structure is arranged in the middle of the section of the second side wall;

the first male structure is disposed in a middle of the fourth sidewall cross-section.

6. The road deck according to claim 1,

the two layers of reinforcement frameworks have the same structure;

each layer of reinforcement framework comprises a rib net formed by staggered arrangement of transverse ribs and longitudinal ribs; and,

the rib net is provided with corner ribs and edge ribs;

the corner ribs are arranged on corners of the road panel body;

the edge ribs are arranged on the edges of the road surface plate body.

7. The road deck according to claim 1,

at least two hoisting buckles are arranged on the upper surface of the road slab body;

the hoisting buckle is fixed on the reinforcement framework close to the upper surface.

8. The road deck as recited in claim 7,

a hoisting buckle groove is formed in the upper surface of the road slab body;

the hoisting buckle is arranged in the hoisting buckle groove, and the top of the hoisting buckle is flush with the upper surface.

9. A method for constructing a road surface, characterized in that the road surface construction is performed by using the road surface board as claimed in any one of claims 1 to 8, comprising the steps of:

carrying out roadbed treatment on a pavement to be constructed to obtain a road base layer structure;

laying geotextile on the road base layer structure;

according to a preset lofting and marking position, laying construction templates for the cast-in-place road panels on the geotextile, laying polystyrene boards among the construction templates, laying geotextile on the polystyrene boards, and fixing to obtain a pouring area of the road panels;

building two layers of reinforcement frameworks in the pouring area of the road deck;

in the pouring area of the road deck, pouring the road deck between the two layers of reinforcement frameworks to obtain a primary road surface;

and maintaining the pavement of the primary pavement and removing the template to obtain the construction pavement.

10. The method of constructing a road surface according to claim 9,

after obtaining the construction road surface, still include:

carrying out roadbed treatment on the new road surface to be constructed to obtain a new road base layer structure;

lofting and scribing are carried out on the new road base structure to obtain a roadbed to be paved;

before the roadbed to be paved is solidified, paving the road deck separated from the construction road surface on the roadbed to be paved, and fixing to obtain a new primary road surface;

and maintaining and filling the new primary pavement to obtain the recycled construction pavement.

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