Roadbed structure for preventing differential settlement at junction of new roadbed and old roadbed

Abstract

The roadbed structure capable of preventing differential settlement at the junction of the new roadbed and the old roadbed comprises the new roadbed and the old roadbed, a junction zone is arranged between the new roadbed and the old roadbed, rough surfaces are arranged on the side faces of the new roadbed and the old roadbed, and splicing notches are formed in the side faces of the new roadbed and the old roadbed. The utility model has the advantages that the bottom bars and the top bars are embedded in the bar embedding holes, the stress bars are fixedly connected with the bottom bars and the top bars through the butt joints, the distribution bars are bound on the stress bars, the high-grade concrete bottom plate is poured, and the first lime soil layer, the second lime soil layer, the first cement macadam layer and the second cement macadam layer are laid. And a high-grade concrete top plate is poured after the concrete is vibrated compactly. The high-grade concrete bottom plate and the high-grade concrete top plate are matched with the rough surface and the stress ribs to tie the new roadbed and the old roadbed together to jointly resist the settlement effect. The new roadbed and the old roadbed are associated, so that the occurrence of poor settlement can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of roadbed, in particular to a roadbed structure for preventing differential settlement at the junction of a new and old roadbed. Background Art

[0002] During road construction, the junction between the new roadbed and the old roadbed is difficult to deal with, and it is easy for the amount of settlement to increase due to the disuse of the new and old road surfaces. Especially on roads where large trucks frequently travel, the problem of uneven settlement seriously threatens traffic safety.

[0003] For example, the roadbed structure for preventing differential settlement at the junction of the new roadbed and the old roadbed with the publication number CN216193714U is provided with a first gap and a second gap, the second lime soil covers the first lime soil in the first gap, and the second cement gravel layer covers the first cement gravel layer in the second gap, which makes it more convenient to perform compaction operation on the junction position, and can make the connection between the new roadbed and the old roadbed more compact, effectively reducing the occurrence of excessive settlement differences. However, the two parts of the lime soil layer and the cement gravel layer overlap through the gap, which has little effect on the connection between the new and old roadbeds, and cannot well improve the connection between the new and old roadbeds, and also cannot balance the settlement between the new and old roadbeds. For this reason, a roadbed structure for preventing differential settlement at the junction of the new and old roadbeds is proposed for improvement. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] To this end, one purpose of the utility model is to propose a roadbed structure for preventing differential settlement at the junction of a new and old roadbed, so as to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a roadbed structure for preventing differential settlement at the junction of a new and old roadbed, including a new roadbed and an old roadbed, a junction zone is provided between the new roadbed and the old roadbed, rough surfaces are provided on the sides of the new roadbed and the old roadbed, splicing notches are provided on the sides of the new roadbed and the old roadbed, and rebar holes are provided on the bottom and top of the sides of the new roadbed and the old roadbed;

[0007] Bottom bars and top bars are respectively arranged in the rebar embedding holes at the bottom and the top, the ends of the bottom bars and the top bars are fixedly connected with butt joints, the sides of the butt joints are fixedly connected with stress-bearing bars, distribution bars are tied on the stress-bearing bars, a high-grade concrete bottom plate is cast on the stress-bearing bars at the bottom, a high-grade concrete top plate is cast on the stress-bearing bars at the top, a first lime soil layer and a second lime soil layer are laid on the high-grade concrete bottom plate, a first cement gravel layer is laid on the first lime soil layer, and a second cement gravel layer is laid on the second lime soil layer.

[0008] Preferably, any of the above schemes comprises: the stress-bearing bars, the distribution bars, the high-grade concrete bottom plate, the high-grade concrete top plate, the first lime soil layer and the second lime soil layer, the first cement gravel layer and the second cement gravel layer are all arranged in the boundary zone.

[0009] Preferably, any of the above schemes is that a plurality of splicing notches are provided on the sides of the new roadbed and the old roadbed, and the splicing notches adopt a triangular structure.

[0010] The above technical solution is adopted: a junction is opened between the new roadbed and the old roadbed to provide construction space for the splicing structure. Rough surfaces are opened on the sides of the new roadbed and the old roadbed, which can effectively increase the friction between the new roadbed, the old roadbed and the splicing structure, making the connection between the two and the splicing structure more secure. The splicing gap can allow the splicing material to flow in, so that after the splicing structure is formed, an interlaced structure is formed between the new roadbed and the old roadbed, thereby making the connection between the splicing structure and the new roadbed and the old roadbed more secure.

[0011] Preferably, any of the above schemes has a plurality of reinforcing bar holes, which are arranged at equal intervals in the length direction of the new roadbed and the old roadbed.

[0012] Preferably, any of the above schemes uses ribbed steel bars as the bottom bars and top bars, and the diameters of the bottom bars, top bars and stress-bearing bars are not less than 12 mm.

[0013] The above technical solution is adopted: the anchor holes provide installation space for the bottom and top bars, and the bottom and top bars are implanted in the new roadbed and the old roadbed, so that they are stably connected with the new roadbed and the old roadbed. The joints connect the force-bearing bars with the bottom and top bars, so that the force-bearing bars connect the new roadbed and the old roadbed together. Then high-grade concrete is poured on the force-bearing bars, and with the rough surface, the high-grade concrete bottom plate and the high-grade concrete top plate tie the new roadbed and the old roadbed together, and the three work together to resist the settlement effect.

[0014] Preferably, any of the above schemes is that the distribution reinforcement is tied to the stress-bearing reinforcement by means of stirrups in a manner perpendicular to the stress-bearing reinforcement, and the diameter of the distribution reinforcement is not less than 8 mm.

[0015] Preferably, any of the above schemes is that a slope is used at the junction between the first lime soil layer and the second lime soil layer, and a slope is used at the junction between the first cement crushed stone layer and the second cement crushed stone layer.

[0016] The above technical solution is adopted: by controlling the diameter of each steel bar, the steel bar can bear the load together with the concrete slab, thereby improving the overall strength of the roadbed. The first lime soil layer and the second lime soil layer, the first cement crushed stone layer and the second cement crushed stone layer are arranged alternately on the high-grade concrete bottom plate and the high-grade concrete top plate, which can effectively reduce the cost of the roadbed. The above structures arranged alternately overlap each other to make the roadbed more solid.

[0017] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0018] 1. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds is provided with rough surfaces, reinforcement holes, bottom reinforcement, top reinforcement, butt joints, stress reinforcement, high-grade concrete bottom plate, high-grade concrete top plate and other structures. The bottom reinforcement and top reinforcement are implanted in the reinforcement holes, and the stress reinforcement is fixedly connected with the bottom reinforcement and top reinforcement through the butt joints. The distribution reinforcement is tied to the stress reinforcement, and the high-grade concrete bottom plate is poured, and the first lime soil layer and the second lime soil layer, the first cement gravel layer and the second cement gravel layer are laid. After vibrating and compacting, the high-grade concrete top plate is poured. The high-grade concrete bottom plate and the high-grade concrete top plate, together with the rough surface and stress reinforcement, tie the new roadbed and the old roadbed together to resist the settlement effect. The connection between the new roadbed and the old roadbed can effectively avoid the occurrence of differential settlement.

[0019] 2. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds controls the diameter of each steel bar so that the steel bar can bear the load together with the concrete slab, thereby improving the overall strength of the roadbed. The first lime soil layer and the second lime soil layer, the first cement crushed stone layer and the second cement crushed stone layer are arranged alternately on the high-grade concrete bottom plate and the high-grade concrete top plate, which can effectively reduce the cost of the roadbed. The staggered structures overlap each other to make the roadbed more solid.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2It is a top view structural schematic diagram of the position of the stress-bearing reinforcement of the utility model.

[0024] In the figure: 1-new roadbed, 2-old roadbed, 3-rough surface, 4-joining notch, 5-rebar embedding hole, 6-bottom reinforcement, 7-top reinforcement, 8-butt joint, 9-load-bearing reinforcement, 10-distribution reinforcement, 11-high-grade concrete bottom plate, 12-first lime soil layer, 13-second lime soil layer, 14-first cement gravel layer, 15-second cement gravel layer, 16-high-grade concrete top plate. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1-2 As shown, the utility model, an embodiment of one aspect of the utility model provides a roadbed structure for preventing differential settlement at the junction of a new and old roadbed, including a new roadbed 1 and an old roadbed 2, a junction zone is opened between the new roadbed 1 and the old roadbed 2, rough surfaces 3 are opened on the sides of the new roadbed 1 and the old roadbed 2, splicing notches 4 are opened on the sides of the new roadbed 1 and the old roadbed 2, and rebar holes 5 are opened on the bottom and top of the sides of the new roadbed 1 and the old roadbed 2;

[0028] Bottom reinforcement 6 and top reinforcement 7 are respectively arranged in the bottom and top reinforcement holes 5, the ends of the bottom reinforcement 6 and the top reinforcement 7 are fixedly connected with butt joints 8, the sides of the butt joints 8 are fixedly connected with stress-bearing reinforcement 9, and distribution reinforcement 10 is tied to the stress-bearing reinforcement 9. A high-grade concrete bottom plate 11 is cast on the bottom stress-bearing reinforcement 9, and a high-grade concrete top plate 16 is cast on the top stress-bearing reinforcement 9. A first lime soil layer 12 and a second lime soil layer 13 are laid on the high-grade concrete bottom plate 11, a first cement gravel layer 14 is laid on the first lime soil layer 12, and a second cement gravel layer 15 is laid on the second lime soil layer 13.

[0029] Embodiment 1: The force-bearing bars 9, the distribution bars 10, the high-grade concrete bottom plate 11, the high-grade concrete top plate 16, the first lime soil layer 12, the second lime soil layer 13, the first cement gravel layer 14, and the second cement gravel layer 15 are all arranged in the junction zone. Several splicing notches 4 are arranged on the sides of the new roadbed 1 and the old roadbed 2, and the splicing notches 4 adopt a triangular structure. A junction zone is opened between the new roadbed 1 and the old roadbed 2 to provide a construction space for the splicing structure. Rough surfaces 3 are opened on the sides of the new roadbed 1 and the old roadbed 2, and the rough surfaces 3 can effectively increase the friction between the new roadbed 1, the old roadbed 2 and the splicing structure, so that the connection between the two and the splicing structure is more secure. The splicing notches 4 can be used for the splicing material to flow in, so that after the splicing structure is formed, an interlaced structure is generated between the new roadbed 1 and the old roadbed 2, thereby making the splicing structure more securely connected to the new roadbed 1 and the old roadbed 2.

[0030] Embodiment 2: There are several anchor holes 5 and they are arranged at equal intervals in the length direction of the new roadbed 1 and the old roadbed 2. The bottom reinforcement 6 and the top reinforcement 7 are ribbed steel bars, and the diameters of the bottom reinforcement 6 and the top reinforcement 7 as well as the tension reinforcement 9 are not less than 12 mm. The anchor holes 5 provide installation space for the bottom reinforcement 6 and the top reinforcement 7. The bottom reinforcement 6 and the top reinforcement 7 are implanted in the new roadbed 1 and the old roadbed 2 so that they are stably connected to the new roadbed 1 and the old roadbed 2. The butt joint 8 connects the tension reinforcement 9 with the bottom reinforcement 6 and the top reinforcement 7 so that the tension reinforcement 9 connects the new roadbed 1 and the old roadbed 2 together. Then, high-grade concrete is poured on the tension reinforcement 9, and the rough surface 3, the high-grade concrete bottom plate 11, and the high-grade concrete top plate 16 are used to tie the new roadbed 1 and the old roadbed 2 together, and the three together resist the settlement effect.

[0031] Embodiment 3: The distribution reinforcement 10 is tied to the tension reinforcement 9 in a manner perpendicular to the tension reinforcement 9 through stirrups, and the diameter of the distribution reinforcement 10 is not less than 8 mm. An inclined surface is used at the junction of the first lime soil layer 12 and the second lime soil layer 13, and an inclined surface is used at the junction of the first cement gravel layer 14 and the second cement gravel layer 15. By controlling the diameter of each steel bar, the steel bar can share the load with the concrete slab, thereby improving the overall strength of the roadbed. The first lime soil layer 12 and the second lime soil layer 13, the first cement gravel layer 14 and the second cement gravel layer 15 are staggered on the high-grade concrete bottom plate 11 and the high-grade concrete top plate 16, which can effectively reduce the cost of the roadbed. The staggered structures above overlap each other to make the roadbed more solid.

[0032] The working principle of the utility model is as follows:

[0033] S1. Plant the bottom reinforcement 6 and the top reinforcement 7 in the reinforcement planting hole 5, and then fix the force-bearing reinforcement 9 with the bottom reinforcement 6 and the top reinforcement 7 through the butt joint 8, and tie the distribution reinforcement 10 on the force-bearing reinforcement 9;

[0034] S2, pouring a high-grade concrete bottom plate 11, laying a first lime soil layer 12 and a second lime soil layer 13, a first cement crushed stone layer 14 and a second cement crushed stone layer 15, vibrating and compacting, and pouring a high-grade concrete top plate 16;

[0035] S3, the high-grade concrete bottom plate 11, the high-grade concrete top plate 16 cooperate with the rough surface 3 and the stress-bearing reinforcement 9 to tie the new roadbed 1 and the old roadbed 2 together to resist the settlement effect.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds is provided with a rough surface 3, a reinforcement hole 5, a bottom reinforcement 6, a top reinforcement 7, a butt joint 8, a stress reinforcement 9, a high-grade concrete bottom plate 11, a high-grade concrete top plate 16 and other structures. The bottom reinforcement 6 and the top reinforcement 7 are implanted in the reinforcement hole 5, and the stress reinforcement 9 is fixedly connected with the bottom reinforcement 6 and the top reinforcement 7 through the butt joint 8. The distribution reinforcement 10 is tied to the stress reinforcement 9, and the high-grade concrete bottom plate 11 is cast, and the first lime soil layer 12 and the second lime soil layer 13, the first cement crushed stone layer 14 and the second cement crushed stone layer 15 are laid. After vibrating and compacting, the high-grade concrete top plate 16 is cast. The high-grade concrete bottom plate 11 and the high-grade concrete top plate 16 cooperate with the rough surface 3 and the stress reinforcement 9 to pull the new roadbed 1 and the old roadbed 2 together to resist the settlement effect together. The new roadbed 1 and the old roadbed 2 are connected, which can effectively avoid the occurrence of differential settlement.

[0038] 2. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds controls the diameter of each steel bar so that the steel bar and the concrete slab can bear the load together, thereby improving the overall strength of the roadbed. The first lime soil layer 12 and the second lime soil layer 13, the first cement crushed stone layer 14 and the second cement crushed stone layer 15 are alternately arranged on the high-grade concrete bottom plate 11 and the high-grade concrete top plate 16, which can effectively reduce the cost of the roadbed. The alternately arranged structures overlap each other to make the roadbed more solid.

Claims

1. A roadbed structure for preventing differential settlement at the junction of a new roadbed and an old roadbed, comprising a new roadbed and an old roadbed; characterized in that: A junction zone is provided between the new roadbed and the old roadbed, rough surfaces are provided on the sides of the new roadbed and the old roadbed, joint notches are provided on the sides of the new roadbed and the old roadbed, and rebar holes are provided on the bottom and top of the sides of the new roadbed and the old roadbed; Bottom bars and top bars are respectively arranged in the rebar embedding holes at the bottom and the top, the ends of the bottom bars and the top bars are fixedly connected with butt joints, the sides of the butt joints are fixedly connected with stress-bearing bars, distribution bars are tied on the stress-bearing bars, a high-grade concrete bottom plate is cast on the stress-bearing bars at the bottom, a high-grade concrete top plate is cast on the stress-bearing bars at the top, a first lime soil layer and a second lime soil layer are laid on the high-grade concrete bottom plate, a first cement gravel layer is laid on the first lime soil layer, and a second cement gravel layer is laid on the second lime soil layer.

2. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds as claimed in claim 1, characterized in that: The stress-bearing bars, the distribution bars, the high-grade concrete bottom plate, the high-grade concrete top plate, the first lime soil layer and the second lime soil layer, the first cement crushed stone layer and the second cement crushed stone layer are all arranged in the boundary zone.

3. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds as claimed in claim 2, characterized in that: A plurality of splicing notches are arranged on the sides of the new roadbed and the old roadbed, and the splicing notches adopt a triangular structure.

4. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds as claimed in claim 3, characterized in that: There are a plurality of reinforcing bar planting holes, which are arranged at equal intervals in the length direction of the new roadbed and the old roadbed.

5. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds as claimed in claim 4, characterized in that: The bottom reinforcement and top reinforcement are ribbed steel bars, and the diameters of the bottom reinforcement, top reinforcement and force-bearing reinforcement are not less than 12 mm.

6. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds as claimed in claim 5, characterized in that: The distribution reinforcement is tied to the stress-bearing reinforcement in a manner perpendicular to the stress-bearing reinforcement through stirrups, and the diameter of the distribution reinforcement is not less than 8 mm.

7. The roadbed structure for preventing differential settlement at the junction of the new and old roadbeds as claimed in claim 6, characterized in that: A slope is used at the junction between the first lime soil layer and the second lime soil layer, and a slope is used at the junction between the first cement crushed stone layer and the second cement crushed stone layer.

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