CN211571228U

CN211571228U - Road surface roadbed mosaic structure for reconstruction and extension engineering

Info

Publication number: CN211571228U
Application number: CN201922411134.3U
Authority: CN
Inventors: 石京杰
Original assignee: Jiangsu Vocational College of Finance and Economics
Current assignee: Jiangsu Vocational College of Finance and Economics
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-09-25
Anticipated expiration: 2029-12-28

Abstract

The utility model provides a change road surface subgrade mosaic structure that extension engineering used, including old road bed and the new road bed that is in the same place with old road bed concatenation, be provided with multistage stair structure on the concatenation face between new road bed and the old road bed, be the inclined plane to old road bed one side slope above each grade of stair structure, the stair structure coats and is stamped the step reinforcing plate of the same shape, many inclined insert the fixed connection reinforcing bar to one side and run through alternately respectively old road bed, the step reinforcing plate on new road bed and the stair structure, the major part of top fixed steel sheet then covers on new road bed surface, another part of top fixed steel sheet then covers on old road bed surface, the both ends of top fixed steel sheet and bottom fixed steel sheet are respectively through many vertical long screw fixed connection that run through old road bed and new road bed. The utility model discloses form the connection structure of inside and outside combination, fully guaranteed new and old road bed joint strength, thoroughly avoided new and old road bed linking department to produce the fracture and separate, make new and old road surface link up more firmly, more durable.

Description

Road surface roadbed mosaic structure for reconstruction and extension engineering

Technical Field

The utility model relates to a road paving technical field, a road surface roadbed mosaic structure that reconstruction and extension engineering used specifically says so.

Background

With the rapid development of Chinese economy and the rapid increase of traffic volume, the number of road transportation requirements in China is increased year by year, the traffic flow of some existing highways is saturated, and widening and modification are urgently needed to improve the traffic capacity of the highways, so that the rapid development requirements of modern economy are met. However, after years of vehicle loading, the settlement deformation of the original roadbed of the expressway reaches a stable state, and the roadbed filler of the widened part also generates compression deformation and settlement deformation, so that the difference of the strength between the new roadbed and the old roadbed is caused to generate differential settlement, and further the pavement structure of the joint part of the new roadbed and the old roadbed generates serious longitudinal cracking and separation. Therefore, the connection structure for connecting the new and old road surface and the roadbed appears at present, but the connection mode of the existing structure is single, the connection parts are mainly connected by steel bars and the like, and a more effective surface connection structure cannot be formed, so that the existing new and old road surface and roadbed connection structure is yet to be strengthened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a road surface road bed mosaic structure that reconstruction and extension engineering used.

In order to achieve the above purpose, the technical scheme of the utility model is that: a spliced structure of road subgrade for reconstruction and extension engineering is composed of an old subgrade, a new subgrade spliced with the old subgrade, a multi-stage step structure with inclined surface inclined toward the old subgrade and reinforcing plates, and multiple oblique reinforcing steel bars passing through the old subgrade, step reinforcing plate on new road bed and the stair structure, old way basilar part is opened there is the rectangular shape slot of horizontally, the most of bottom fixed steel sheet inserts in the rectangular shape slot, another of bottom fixed steel sheet then inserts in the new road bed, the most of top fixed steel sheet then covers on new road bed surface, another part of top fixed steel sheet then covers on old road bed surface, the both ends of top fixed steel sheet and bottom fixed steel sheet are respectively through many vertical long screw fixed connection that runs through old road bed and new road bed.

Further, the new roadbed comprises an asphalt layer, a sand cushion layer, a concrete layer and a gravel layer from top to bottom in sequence.

Furthermore, the thickness of the top fixed steel plate and the bottom fixed steel plate is-mm.

Furthermore, the lower end of each long screw penetrates through the bottom fixing steel plate respectively, and the tip of the lower end is located below the bottom fixing steel plate.

Furthermore, after each long screw is fixed, the top edge is beaten and is tightly attached to the surface of the top fixing steel plate.

When the step structure of the old roadbed and the new roadbed of the utility model is applied with downward force, because the inclined plane inclined towards one side of the old roadbed is arranged on each step of the step structure, the force which is equivalent to the approaching towards the direction of the old roadbed can be given to the connecting part of the new roadbed, and the outward pulling force of the connecting part of the new roadbed and the old roadbed can be effectively avoided by the force, so that the connecting part of the new roadbed and the old roadbed forms a surface connecting structure with more stable structure, moreover, the step structure is covered with step reinforcing plates with the same shape, and the strength of the surface connecting structure is improved; a plurality of obliquely inserted fixed connecting reinforcing steel bars penetrate through the formed surface connecting structure part, the obliquely inserted fixed connecting reinforcing steel bars not only further connect the new roadbed and the old roadbed at the two sides of the step reinforcing plate, but also string the old roadbed, the new roadbed and the step reinforcing plate on the step structure together to form a more stable integral structure, and the firmness of the connecting part of the new roadbed and the old roadbed is greatly enhanced; the both ends of the fixed steel sheet in top and the fixed steel sheet in bottom are respectively through many vertical long screw fixed connection that run through old road bed and new road bed, be equivalent to the upper and lower facial features at old and new road bed form the clamping structure of enhancement, can also improve the tensile strength below the old and new road bed, the connection structure that combines the inside of old and new road bed forms the connection structure of inside and outside combination, new and old road bed joint strength has fully been guaranteed, new and old road bed joint department production fracture and separation have thoroughly been avoided, it is more firm to make new and old road surface link up, and is more durable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment is described in detail below with reference to the accompanying drawings:

the embodiment provides a pavement subgrade splicing structure for reconstruction and extension projects, and please refer to fig. 1 in the attached drawings of the specification.

As shown in figure 1, the pavement and roadbed splicing structure for reconstruction and expansion engineering comprises an old roadbed 1 and a new roadbed 2 spliced together with the old roadbed 1, wherein the new roadbed 2 sequentially comprises an asphalt layer 201, a sand cushion layer 202, a concrete layer 203 and a gravel layer 204 from top to bottom, and is formed by adopting a multilayer structure, the structure is firmer, a multistage step structure 3 is arranged on a splicing surface between the new roadbed 2 and the old roadbed 1, an inclined surface 4 inclined towards one side of the old roadbed 1 is arranged on each step of the step structure 3, a step reinforcing plate 5 with the same shape is covered on the step structure 3, a plurality of inclined obliquely inserted fixed connecting reinforcing steel bars 6 respectively penetrate through the old roadbed 1, the new roadbed 2 and the step reinforcing plate 5 on the step structure 3 in a crossed manner, a horizontal strip-shaped slot 7 is formed in the bottom of the old roadbed 1, most parts of bottom fixed steel plates 8 are inserted into the strip-shaped slot 7, another of the fixed steel sheet 8 in bottom then inserts new roadbed 2, the most part of the fixed steel sheet 9 in top then covers on new roadbed 2 is surperficial, the fixed steel sheet 9 another part in top then covers on old roadbed 1 is surperficial, the fixed steel sheet 9 in top and the fixed steel sheet 8 in bottom both ends are respectively through many vertical long screw 10 fixed connection who runs through old roadbed 1 and new roadbed 2, and the lower extreme of every long screw 10 runs through the fixed steel sheet 8 in bottom respectively, and the sharp portion of lower extreme is located the fixed steel sheet 8's in bottom below, ensure that the fixed steel sheet 9 in top and the fixed steel sheet 8 fixed connection in bottom are firm, the fixed steel sheet 9 in top, the fixed steel sheet 8 thickness in bottom is 10-30mm, the steel sheet of this thickness satisfies the connection needs.

When the step structures 3 of the old roadbed 1 and the new roadbed 2 are acted with downward force, because the inclined surface 4 inclined towards one side of the old roadbed 1 is arranged on each step of the step structures 3, the force which is equivalent to the force approaching to the direction of the old roadbed 1 can be given to the connecting part of the new roadbed 2, and the force can effectively avoid the outward pulling force of the connecting part of the new roadbed and the old roadbed, so that the connecting part of the new roadbed and the old roadbed forms a surface connecting structure with a more stable structure, and moreover, the step structures 3 are covered with step reinforcing plates 5 with the same shape, and the strength of the surface connecting structure is improved; a plurality of obliquely inserted fixed connecting reinforcing steel bars 6 penetrate through the formed surface connecting structure part, the obliquely inserted fixed connecting reinforcing steel bars 6 not only further connect the new and old roadbeds on the two sides of the step reinforcing plate 5, but also string the old roadbed 1, the new roadbed 2 and the step reinforcing plate 5 on the step structure 3 together to form a more stable integral structure, and the firmness of the connecting part of the new and old roadbeds is greatly enhanced; the both ends of the fixed steel sheet 9 of top and the fixed steel sheet 8 of bottom are respectively through many vertical long screw 10 fixed connection that run through old road bed 1 and new road bed 2, be equivalent to the upper and lower facial features at new and old road bed form the clamping structure of enhancement, can also improve the tensile strength of new and old road bed upper and lower face, the connection structure that combines inside and outside formation of new and old road bed, new and old road bed joint strength has fully been guaranteed, new and old road bed joint department production fracture and separation have thoroughly been avoided, it is more firm to make new and old road surface link up, it is more durable.

In order to reduce the obstruction of the nut parts of the long screws 10 to the vehicle as much as possible, after each long screw 10 is fixed, the top edge is hammered to be tightly attached to the surface of the top fixing steel plate 9, or a long screw with a thinner nut part can be adopted, or a concave groove which is downwards concave is formed at the top fixing steel plate 9 part of the nut part and is used for accommodating the nut part of the long screw 10.

Of course, the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a road surface road bed mosaic structure that reconstruction and extension engineering used which characterized in that: comprises an old roadbed (1) and a new roadbed (2) spliced together with the old roadbed (1), wherein a multi-stage step structure (3) is arranged on a splicing surface between the new roadbed (2) and the old roadbed (1), an inclined plane (4) inclined towards one side of the old roadbed (1) is arranged on each stage of step of the step structure (3), a step reinforcing plate (5) with the same shape is covered on the step structure (3), a plurality of inclined inserted fixed connecting reinforcing steel bars (6) respectively penetrate through the old roadbed (1), the new roadbed (2) and the step reinforcing plate (5) on the step structure (3) in a crossing way, a horizontal strip-shaped slot (7) is arranged at the bottom of the old roadbed (1), most of a bottom fixed steel plate (8) is inserted into the strip-shaped slot (7), the other bottom fixed steel plate (8) is inserted into the new roadbed (2), most of a top fixed steel plate (9) is covered on the surface of the new roadbed (2), the other part of the top fixing steel plate (9) covers the surface of the old roadbed (1), and the two ends of the top fixing steel plate (9) and the bottom fixing steel plate (8) are respectively and fixedly connected through a plurality of long screws (10) vertically penetrating through the old roadbed (1) and the new roadbed (2).

2. The pavement and roadbed splicing structure for reconstruction and extension projects according to claim 1, wherein the pavement and roadbed splicing structure comprises: the new roadbed (2) sequentially comprises an asphalt layer (201), a sand cushion layer (202), a concrete layer (203) and a gravel layer (204) from top to bottom.

3. The pavement and roadbed splicing structure for reconstruction and extension projects according to claim 1, wherein the pavement and roadbed splicing structure comprises: the thickness of the top fixed steel plate (9) and the bottom fixed steel plate (8) is 10-30 mm.

4. The pavement and roadbed splicing structure for reconstruction and extension projects according to claim 1, wherein the pavement and roadbed splicing structure comprises: the lower end of each long screw (10) penetrates through the bottom fixing steel plate (8) respectively, and the tip of the lower end is located below the bottom fixing steel plate (8).

5. The pavement and roadbed splicing structure for reconstruction and extension projects according to claim 1, wherein the pavement and roadbed splicing structure comprises: after each long screw (10) is fixed, the top edge is beaten and is tightly attached to the surface of the top fixing steel plate (9).