CN210657852U

CN210657852U - Prefabricated road deck and temporary road structure

Info

Publication number: CN210657852U
Application number: CN201921533092.4U
Authority: CN
Inventors: 王贵宾; 任海平; 王富平; 李生仓
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-02
Anticipated expiration: 2029-09-16

Abstract

The utility model relates to a prefabricated pavement slab and interim road structure, prefabricated pavement slab include the concrete plate body of rectangle, and the internal pre-buried steel reinforcement cage that has of concrete plate is in order to improve structural strength, and the twelve edges of concrete plate body all correspond the cladding and have the angle steel, and the lateral surface of all angle steels all links and level mutually with the surface of the concrete plate body that corresponds, and the both ends of every angle steel all weld with the angle steel that corresponds mutually and link firmly in order to form the frame form. The angle steel of the prefabricated road deck of the utility model is flush with the outer surface of the concrete plate body, the flatness is good, the flatness of the whole road after splicing can be effectively improved, and the problem of inconvenient preparation of the prefabricated road deck can be effectively avoided through the angle steel in the form of a frame; the angle steel in the form of the frame can be prefabricated and molded, the formwork side die for limiting concrete slurry to flow is very convenient to erect, the angle steel frame outer side face on the corresponding side is covered, and after the formwork is erected, the concrete slurry is poured to form the prefabricated pavement slab.

Description

Prefabricated road deck and temporary road structure

Technical Field

The utility model belongs to the technical field of road building, concretely relates to prefabricated road deck and interim road structure.

Background

The temporary road adopted in the existing building construction mainly takes a concrete directly paved hardened road as a main part, and in the actual operation process, the temporary road for construction can be changed for many times according to the field condition, so that the great waste of engineering materials is caused, and the engineering cost is increased; in the using process, after the road is damaged due to various reasons, the maintenance difficulty is high, the cost is high, the normal traffic of the road is influenced, and a lot of inconvenience is caused; and because the concrete directly paves the environmental protection limitation of hardening road construction, is unfavorable for the construction and formation of temporary road, its working cost is very high.

In the prior art, a technical scheme for solving the problems is provided by prefabricating an assembly type road, and beneficial effects of being reusable to reduce cost, being prefabricated to save cycle, high in laying efficiency, convenient to replace and maintain, energy-saving and environment-friendly are achieved, for example, CN204491342U, CN105603843A, CN206902499U and CN107503260A are involved, but the problems of inconvenience in preparation, more preparation materials and heavy monomer weight are also existed, for example, a road board in CN204491342U has the problems of insufficient edge strength and complex anchoring construction after laying; although the CN105603843A solves the problem of the edge strength of the road deck, the preparation is inconvenient, and the flatness after the pavement is poor; the road panel in CN206902499U is complex to connect, and the required customized edge covering also increases the cost; the road module in CN107503260A has limited improvement in connection efficiency in practical use. Further improved optimization of prefabricated roads is needed to perfect the function and effect of use.

Disclosure of Invention

The above-mentioned not enough to prior art, the to-be-solved technical problem of the utility model is to provide a prefabricated road deck and interim road structure, avoid the relatively poor problem of roughness of the whole road in inconvenient, the concatenation back of road deck preparation, gain the concatenation fixed convenient, effect that the wholeness is good.

In order to solve the technical problem, the utility model adopts the following technical scheme:

precast pavement board, including the concrete plate body of rectangle, the internal pre-buried steel reinforcement cage that has of concrete plate is in order to improve structural strength, the twelve edges of concrete plate body all correspond the cladding and have the angle steel, and the lateral surface of all angle steels all links and level mutually with the surface of the concrete plate body that corresponds, and the both ends of every angle steel all weld with the angle steel that corresponds mutually and link firmly in order to form the frame form.

Further perfecting the technical scheme, the middle part of the lower surface of the concrete plate body is provided with a concave part; an occupying formwork is also pre-embedded in the concrete slab body, the lower surface of the occupying formwork is flush with the lower surface of the concrete slab body, a concave cavity is arranged on the lower surface of the occupying formwork, and the cavity is formed into the concave part; the reinforcing bar cage covers establishes the outside of occupation mould shell, and the lower part of reinforcing bar cage has and is used for carrying out the spacing location portion of horizontal direction to the occupation mould shell in the manufacturing process.

Furthermore, the occupation formwork is a thin-walled member in the shape of a quadrangular frustum pyramid, and the adjacent side surfaces and the top surface are in arc transition connection.

Furthermore, the occupying formwork is an integrally formed concrete formwork, and the lower edge of the outer side surface of the occupying formwork is provided with a convex edge.

Furthermore, an occupying box body is also pre-buried in the concrete slab body; the space occupying box body is positioned in the reinforcement cage so as to be limited in the manufacturing process.

Furthermore, the occupying box body is a hollow box body or a foam square block made of plastic.

Furthermore, a connecting steel bar is connected between the inner side face of the angle steel and the steel reinforcement cage so as to be used for positioning the steel reinforcement cage in the manufacturing process.

The utility model discloses still relate to an interim road structure, including the roadbed layer, stable layer of water and surface course have been laid in proper order in the roadbed layer, the surface course includes a plurality of foretell prefabricated road deck boards, and all prefabricated road deck boards are tiled on stable layer of water, and adjacent prefabricated road deck board links to each other through the welding in order to form the surface course of whole form with the help of the angle steel of edge position separately.

And further, the side surfaces of the adjacent prefabricated pavement slabs are attached, the welding is spot welding, and the spot welding position is the upper end of the attachment surface of the adjacent prefabricated pavement slabs.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the angle steel of the prefabricated road slab of the utility model is flush with the outer surface of the concrete slab body, the planeness is good, the planeness of the whole road after splicing can be effectively improved, and the problem of poor road planeness caused by the connection form of the angle steel which is convexly covered on the outer surface of the concrete slab body is avoided; when the prefabricated pavement slab is spliced for use, the adjacent prefabricated pavement slabs can be tightly attached, the laying density in unit area is higher, and the stability is improved.

2. The prefabricated road slab of the utility model can effectively avoid the problem of inconvenient preparation of the prefabricated road slab through the angle steel in the form of the frame; the angle steel in the form of the frame can be prefabricated and molded, the formwork side die for limiting concrete slurry to flow is very convenient to erect, the angle steel frame outer side face on the corresponding side is covered, and after the formwork is erected, the concrete slurry is poured to form the prefabricated pavement slab.

3. The utility model discloses a prefabricated road deck, through pre-buried occupation mould shell or occupation box, reduce the preparation materials, reduce monomer weight, facilitate the use.

4. The temporary road structure, the road bed layer and the water stabilization layer of the utility model can ensure the integral stability of the formed temporary road structure; the integral road surface layer formed by spot welding is convenient to splice and fix, has good integrity, and further improves the stability of the road structure.

Drawings

FIG. 1 is a schematic structural view of a prefabricated road deck according to an embodiment;

fig. 2 is a schematic cross-sectional view of a prefabricated road slab according to the first embodiment;

fig. 3-schematic cross-sectional structure of a prefabricated road slab of the second embodiment;

FIG. 4-a schematic view of an embodiment in which the angle steel forms a frame;

FIG. 5 is a schematic illustration of a temporary road structure according to an embodiment;

6-5;

the prefabricated pavement slab 100, the concrete slab body 1, the steel reinforcement cage 2, the positioning portion 21, the angle steel 3, the occupying formwork 4, the cavity 41, the convex edge 42, the occupying box body 5, the connecting steel bars 6, the roadbed layer 70, the water stabilization layer 80 and the pavement layer 90.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Example one

Referring to fig. 1 and 2, a prefabricated pavement slab 100 according to the first embodiment includes a rectangular concrete slab 1, a reinforcement cage 2 is embedded in the concrete slab 1 to improve structural strength, twelve edges of the concrete slab 1 correspond to each other and are coated with angle steel 3, two large outer side surfaces of all the angle steel 3 are flush with corresponding outer surfaces of the concrete slab 1, that is, two outer side surfaces of the angle steel 3 around the upper surface of the concrete slab 1 are flush with the upper surface and the side surface of the concrete slab 1, two outer side surfaces of the vertical angle steel 3 are flush with the two side surfaces of the concrete slab 1, two outer side surfaces of the angle steel 3 around the lower surface of the concrete slab 1 are flush with the side surface and the lower surface of the concrete slab 1, and two ends of each angle steel 3 are welded and fixedly connected with the angle steel 3 corresponding to form a frame. In implementation, the frame-shaped angle steel 3 is manufactured and molded before concrete grout is poured to manufacture the pavement slab, generally, four angle steels 3 (two ends of each angle steel 3 are inverted by 45 degrees so as to be in butt joint) to be arranged on the periphery of the upper surface of the concrete slab 1 are welded and molded, four angle steels 3 to be arranged on the periphery of the lower surface are vertically connected by the four angle steels 3, and a frame form is formed, as shown in fig. 4.

According to the prefabricated road slab 100 of the specific embodiment, the bearing capacity of the prefabricated road slab 100 can be improved through the pre-embedded reinforcement cage 2; in addition, the angle steel 3 is flush with the outer surface of the concrete plate body 1, the flatness is good, the flatness of the whole road after splicing is effectively improved, and the problem of poor road flatness caused by the connection form of the angle steel protruding to cover the outer surface of the concrete plate body 1 is avoided; when the prefabricated road slab is spliced for use, the adjacent prefabricated road slabs 100 can be attached to each other, the laying density in unit area is higher, and the stability is improved; secondly, while the flatness is guaranteed, the problem of inconvenience in preparation of the road slab can be effectively solved through the angle steel in the form of the frame, and the method is mainly convenient for erecting the template. The angle steel in the form of a frame is prefabricated, a template (a side mold) for limiting concrete slurry to flow is very convenient to support, and the angle steel is covered on the outer side surface of the angle steel frame on the corresponding side; in the aspects of connection mode and sealing performance, the magnet can be used for adsorption, the magnet is positioned on the outer side of the template, and the template is pressed by the attraction force of the angle steel 3; other objects can also be used for propping against the template, during actual operation, the other objects adopt another angle steel frame, namely a plurality of road slabs are prefabricated together, the angle steel frames are adjacently placed, the template is clamped between angle steels on adjacent side surfaces, thus, one template is correspondingly formed into side molds of two prefabricated road slabs 100, the operation is very convenient, resources are saved, and after the template is erected, concrete slurry is poured to form the prefabricated road slabs 100 (C20 level).

It can also be known from the manufacturing process that the welding between the angle steels 3 is preferably a sealing welding to prevent the concrete slurry from leaking. The angle steel 3 of the prefabricated road slab 100 adopts common angle steel, and is low in cost.

Wherein, the middle part of the lower surface of the concrete slab body 1 is provided with a concave part; a prefabricated occupying formwork 4 is also embedded in the concrete slab body 1, the lower surface of the occupying formwork 4 is flush with the lower surface of the concrete slab body 1, a concave cavity 41 is arranged on the lower surface of the occupying formwork 4, and the cavity 41 is formed into the concave part; the steel reinforcement cage 2 covers the outside of the occupation formwork 4, and the lower part of the steel reinforcement cage 2 is provided with a positioning part 21 which is used for limiting the occupation formwork 4 in the horizontal direction in the manufacturing process.

Therefore, the preparation materials can be reduced, the monomer weight can be reduced, and the use is convenient. The occupation formwork 4 is preferably located in the middle of the lower surface of the concrete slab 1, so the occupation formwork can be limited by the steel reinforcement cage 2, the concrete slurry pouring is prevented, the position offset of the occupation formwork 4 is too large, the steel reinforcement cage 2 is limited to the occupation formwork 4 through the positioning portion 21, the steel reinforcement cage 2 is fixedly connected through the criss-cross lap joint of a plurality of steel reinforcements, the positioning portion 21 can be a circle surrounded by the steel reinforcements on the lower surface of the steel reinforcement cage 2, the horizontal displacement of the occupation formwork 4 is limited, the simplest mode can be realized, the four steel reinforcements are uniformly distributed around the occupation formwork 4, one end of each steel reinforcement is connected with the steel reinforcement cage 2, the other end of each steel reinforcement faces the middle occupation formwork 4, the four steel reinforcements face the inner free ends and can limit the occupation formwork 4 in the horizontal direction, and the embodiment also adopts the. In practice, when concrete grout is poured, the occupied formwork 4 is generally positioned at the bottom, in order to better ensure that the occupied formwork 4 is always positioned at the bottom and the concrete grout is placed into the cavity 41, a cushion block can be added between the upper surface of the occupied formwork 4 and the reinforcement cage 2 to limit the vertical movement of the occupied formwork 4.

The occupation formwork 4 is a thin-walled member in the shape of a quadrangular frustum pyramid, and the adjacent side faces and the top face are in arc transition connection.

Therefore, since the occupation formwork 4 is also a prefabricated member, the thin-wall members can be conveniently stacked before being used on the prefabricated road slab 100, and the storage space is saved; the arc transition can ensure the strength of the occupying formwork 4, improve the bearing capacity of the occupying formwork, and avoid the damage of the occupying formwork 4 caused by stress concentration during bearing; the design form of the quadrangular frustum shaped occupying formwork can reduce the concrete consumption and simultaneously ensure the bearing capacity, and can bear corresponding loads in the construction and finished product use processes.

The occupying formwork 4 is an integrally formed concrete formwork, and the lower edge of the outer side surface of the occupying formwork is provided with a convex edge 42.

Thus, the manufacturing is simple, the sealing performance is good, the integrity is good, and the strength is improved; and the formed consistency is high, the overlapping and stacking are convenient, when the stacked occupying formwork 4 needs to be used, the convex edge 42 arranged on the lower edge of the outer side surface of the stacked occupying formwork 4 is convenient to be used as an acting point, and the overlapped and stacked occupying formwork 4 is convenient to be separated.

Wherein, be connected with connecting reinforcement 6 between the medial surface of angle steel 3 and steel reinforcement cage 2 and be used for the location of steel reinforcement cage 2 in the manufacturing process. The reinforcement cage 2 is also the prefab, before pouring the shaping curb plate, its relative angle-bar frame's position also need be fixed, has just also confirmed the position of reinforcement cage 2 pre-buried in the concrete plate body 1 correspondingly, and its distance concrete plate body 1 surface value is according to the design requirement. The quantity of connecting reinforcement 6 is not limited, as long as intensity is enough, can play the effect of positioning reinforcement cage 2 can, all be connected with connecting reinforcement 6 between the medial surface of many angle steel 3 and steel reinforcement cage 2, connecting reinforcement 6 also can improve the stability of being connected of angle steel 3 and concrete plate body 1.

Example two

Referring to fig. 3, the difference between the prefabricated pavement slab 100 of the second embodiment and the first embodiment is that, in terms of reducing preparation materials and reducing the weight of the single body, the space occupying formwork 4 is not adopted, but the space occupying box 5 embedded in the concrete slab 1 is selected, and the space occupying box 5 is located in the reinforcement cage 2 so as to be limited in the manufacturing process. During manufacturing, the steel reinforcement cage 2 is prefabricated, the occupying box body 5 is sealed in the steel reinforcement cage, the positioning portion 21 is not needed, concrete slurry is poured to form the prefabricated road slab 100 after the steel reinforcement cage 2 is connected with the angle steel 3 through the connecting steel bars 6, the occupying box body 5 is approximately located at the middle layer of the prefabricated road slab 100, and the upper-layer compression area and the lower-layer tension area of the prefabricated road slab 100 are complete in stress analysis, so that the strength can be better guaranteed under the condition of weight reduction.

The space occupying box 5 is made of light material, can be a hollow box made of plastic, and can also be a foam square.

Referring to fig. 5 and 6, the present invention further provides a temporary road structure, which includes a road base layer 70, a water stabilization layer 80 and a road surface layer 90 are sequentially laid on the road base layer 70, the road surface layer 90 includes a plurality of prefabricated road panels 100 as described in the first embodiment or the second embodiment, all the prefabricated road panels 100 are laid on the water stabilization layer 80, and the adjacent prefabricated road panels 100 are connected by welding to form the whole road surface layer 90 by means of the angle steel 3 at the respective edge positions. Specifically, the side surfaces of the adjacent prefabricated road panels 100 are attached to each other, spot welding is adopted, and the spot welding position is the upper end of the attached surface of the adjacent prefabricated road panels 100, namely, the angle steel 3 around the upper surface of the prefabricated road panel 100 is used as a spot welding object. When the prefabricated road surface slab 100 of the first embodiment is used, the concave portion thereof should be directed toward the water-stable layer 80.

When the method is implemented, the temporary road construction is completed on a planned road, firstly, the roadbed is tamped, the roadbed layer 70 is formed, then the water stabilization layer 80 is poured, the water stabilization layer 80 is measured, set-off and positioned after reaching the strength, the prefabricated road deck boards 100 which are manufactured and qualified in acceptance are tiled on the water stabilization layer 80 and are adjacently spliced, and splicing finishing correction is carried out to form a loose spliced road deck layer; carrying out heavy load compaction leveling on the scattered road surface layers by adopting a road roller; then, spot welding is performed on each of the aligned and installed adjacent prefabricated road panels 100 to form the integrated road surface layer 90, and finally, the temporary road structure is formed.

The roadbed layer 70 and the water stabilization layer 80 can ensure the overall stability of the formed temporary road structure; the compaction makes level whole form road surface layer 90 that the back spot welding formed, and the concatenation is fixed convenient, and the wholeness is good, further improves stability.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. Prefabricated road deck, including the concrete plate body of rectangle, pre-buried in the concrete plate body has the steel reinforcement cage in order to improve structural strength, its characterized in that: twelve edges of the concrete plate body are coated with angle steel correspondingly, the outer side faces of all the angle steel are flush with the outer surfaces of the corresponding concrete plate body, and two ends of each angle steel are fixedly connected with the corresponding angle steel in a welded mode to form a frame.

2. The prefabricated road slab of claim 1, wherein: the middle part of the lower surface of the concrete plate body is provided with a concave part; an occupying formwork is also pre-embedded in the concrete slab body, the lower surface of the occupying formwork is flush with the lower surface of the concrete slab body, a concave cavity is arranged on the lower surface of the occupying formwork, and the cavity is formed into the concave part; the reinforcing bar cage covers establishes the outside of occupation mould shell, and the lower part of reinforcing bar cage has and is used for carrying out the spacing location portion of horizontal direction to the occupation mould shell in the manufacturing process.

3. The prefabricated road slab of claim 2, wherein: the space occupying formwork is a thin-walled member in the shape of a quadrangular frustum cone, and the adjacent side surfaces and the top surface are in arc transition connection.

4. The prefabricated road slab of claim 3, wherein: the space occupying shuttering is an integrally formed concrete shuttering, and a convex edge is arranged at the lower edge of the outer side surface of the space occupying shuttering.

5. The prefabricated road slab of claim 1, wherein: an occupying box body is also pre-embedded in the concrete slab body; the space occupying box body is positioned in the reinforcement cage so as to be limited in the manufacturing process.

6. The prefabricated road slab of claim 5, wherein: the occupying box body is a hollow box body or a foam square block made of plastics.

7. The prefabricated road deck according to any one of claims 1 to 6, wherein: and a connecting steel bar is connected between the inner side surface of the angle steel and the steel reinforcement cage so as to be used for positioning the steel reinforcement cage in the manufacturing process.

8. A temporary road structure comprising a road base layer, characterized in that: a water-stable layer and a pavement layer are sequentially paved on the roadbed layer, the pavement layer comprises a plurality of prefabricated pavement slabs as claimed in any one of claims 1-7, all the prefabricated pavement slabs are paved on the water-stable layer, and adjacent prefabricated pavement slabs are connected through welding by virtue of angle steel at respective edge positions to form the pavement layer in an integral form.

9. A temporary road structure according to claim 8, characterized in that: the side surfaces of the adjacent prefabricated road panels are attached to each other, the welding is spot welding, and the spot welding position is the upper end of the attachment surface of the adjacent prefabricated road panels.