New and old roadbed splicing structure

Abstract

This utility model discloses a splicing structure for new and old roadbeds, specifically relating to the field of roadbed construction technology. It includes an old road surface, with a new road surface installed on one side of the old road surface. An old foundation is located at the bottom of the old road surface, and a bottom foundation is located at the bottom of the new road surface. Multiple support columns are installed at the bottom of the new road surface. A connecting groove is formed on the side of the old road surface closest to the new road surface, and multiple slots are formed inside the bottom of the connecting groove. A bonding groove is formed on the bottom of the new road surface closest to the old road surface, and multiple locking blocks corresponding to the slots are formed inside the bonding groove. A top foundation is formed on the top of the bottom foundation away from the old road surface. This utility model has the advantages of facilitating the reinforcement of the new foundation to avoid delamination and uneven settlement, facilitating the tight connection and fixation of the new road surface and the old road surface, and avoiding expansion joints and detachment due to uneven settlement.

Description

TECHNICAL FIELD

[0001] The utility model relates to roadbed construction technical field, concretely relates to a new and old roadbed splicing structure. BACKGROUND

[0002] With the development of economy and traffic of our country, the original laid road often encounters the situation of insufficient passability, causes the city road congestion, needs to carry out the widening to the original road, especially in some old road surface, its original construction specification is lower, needs to splice combination on one side or both sides of the road, forms the road that is more wide, especially in the road that the road surface is higher than the ground or mountainous slope sets, the original construction specification is usually lower, needs to widen the road surface at the slope, avoids the congestion, improves the passing efficiency.

[0003] The prior art with publication number CN116575280A is a new and old roadbed widening splicing roadbed structure, which comprises an original road and a widened road, a plurality of advanced small catheters are implanted in the roadbed of the original road, the advanced small catheters are gradually inclined downward along the direction from the widened road to the original road, cement slurry is injected into the advanced small catheters by high-pressure grouting, at least vertical steel bars are arranged in the roadbed of the widened road corresponding to the positions of the advanced small catheters, and the vertical steel bars near the original road are fixedly connected with the advanced small catheters after grouting.

[0004] The above-mentioned prior art has some defects in use, lacks connection between the original road and the widened road, is easy to appear expansion joint and separation, causes fragmentation, causes sundries to enter, at the same time, the foundation inside the bottom of the widened road is newly laid, lacks treatment, while the old road foundation water stability has been stable after long-term use, is easy to cause uneven settlement between the new and old foundations to appear stratification, and uneven settlement is easy to appear at the edge. SUMMARY

[0005] The utility model discloses a new and old roadbed splicing structure, solve the new and old road connection when the lack of connecting structure easy to appear expansion joint and cause separation, the uneven settlement of new and old foundation problems.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a new and old roadbed splicing structure, including old road surface, the one side of old road surface is provided with new road surface, and the bottom of old road surface is provided with old foundation, the bottom of new road surface is provided with bottom foundation, and the bottom of new road surface is provided with bottom foundation.

[0007] A connecting groove is provided on the side of the old road surface that is close to the new road surface, and multiple slots are provided inside the bottom end of the connecting groove.

[0008] The bottom of the newly constructed road surface is provided with a connecting groove on the side close to the old road surface, and the interior of the connecting groove is provided with multiple locking blocks corresponding to the locking groove.

[0009] A top foundation is provided on the side of the bottom foundation away from the old road surface, and a support beam is provided on the side of the top foundation closer to the old road surface.

[0010] Preferably, a soil layer is provided at the bottom of the old foundation, and curb stones are provided on the side of the old road surface that is far away from the new road surface.

[0011] Preferably, the connecting groove is engaged with the bottom of the newly built road surface, and the locking block is engaged with the inside of the locking groove at the bottom of the connecting groove, and the end of the locking groove near the old road surface is inclined to both sides.

[0012] Preferably, the support column penetrates the interior of the top foundation and the support beam, and a connecting net is provided at the top of the bottom foundation, which is fixedly connected to the support column inside the top foundation and the support beam respectively.

[0013] Preferably, the top of the connecting net is attached to the top of the top foundation and the top of the support beam, the bottom of the old road surface is tightly attached to the top of the top foundation and the top of the support beam, and the top of the support column penetrates the top foundation and the support beam to connect with the interior of the new road surface.

[0014] Preferably, a connecting steel bar is installed through the inside of the slot, and a fixing steel bar is installed at the bottom of the connecting steel bar. The fixing steel bar penetrates the inside of the top foundation and the support beam and connects with the inside of the old foundation. Multiple prestressed tie bars are inclined and fixedly connected to the support column inside the support beam on the side close to the old foundation.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. A corresponding connecting mesh is installed on top of the bottom foundation, which can effectively improve the integrity of the bottom foundation. Since the connecting mesh is fixedly connected to the support columns, and the top of the connecting mesh is respectively set with the top foundation and the support beam, the support columns inside the top foundation and the support beam are connected and fixed by fixed steel bars, which can make the support columns connected and fixed. At the same time, the inclined prestressed tie bars can prevent the support columns from tilting to the side away from the old foundation, thereby improving the tensile strength of the bottom foundation and the top foundation, avoiding uneven settlement, and thus ensuring the support for the newly built road surface on top.

[0017] 2. The connecting groove of the old road surface and the connecting groove of the new road surface fit together, and the interlocking of the locking blocks and the locking grooves maintains a tight connection between the old and new road surfaces. Since the locking grooves are equipped with connecting steel bars, and the two ends of the connecting steel bars are connected to the old and new road surfaces respectively, the connection between the old and new road surfaces is further maintained, improving tensile strength. Moreover, during use, the bottom of the new road surface is fixedly connected to the top of the support column to avoid expansion joints caused by uneven settlement of the new road surface. At the same time, under the support of the support beam, the support height of the new road surface on the side closer to the old road surface can be further maintained, so that the height of the new and old road surfaces is consistent. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the bottom connection structure of the newly constructed road surface according to this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the foundation of this utility model;

[0022] Figure 4 This is a schematic diagram of the external connection structure of the support column of this utility model;

[0023] Figure 5 This is a schematic diagram of the bottom structure of the newly constructed road surface according to this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Old road surface; 101. Connecting groove; 102. Card groove; 2. New road surface; 201. Combination groove; 202. Card block; 3. Old foundation; 301. Soil layer; 302. Curbstone; 4. Bottom foundation; 401. Connecting mesh; 402. Top foundation; 403. Support beam; 5. Support column; 501. Connecting steel bar; 502. Fixing steel bar; 503. Prestressed tie bar. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figures 1-5 The diagram shows a new and old roadbed splicing structure, including an old road surface 1, a new road surface 2 on one side of the old road surface 1, an old foundation 3 at the bottom of the old road surface 1, a bottom foundation 4 at the bottom of the new road surface 2, and multiple support columns 5 installed at the bottom of the new road surface 2; a connecting groove 101 is provided on the side of the old road surface 1 near the new road surface 2, and multiple slots 102 are provided inside the bottom of the connecting groove 101; a connecting groove 201 is provided on the bottom of the new road surface 2 near the old road surface 1, and multiple locking blocks 202 corresponding to the slots 102 are provided inside the connecting groove 201; a top foundation 402 is provided on the top of the bottom foundation 4 away from the old road surface 1, and a support beam 403 is provided on the top foundation 402 near the old road surface 1.

[0028] To integrate the old road surface with the new road surface, a soil layer 301 is provided at the bottom of the old foundation 3. Curbstones 302 are provided on the sides of the old road surface 1 and the new road surface 2 that are far apart from each other. The connecting groove 101 is engaged with the connecting groove 201 at the bottom of one side of the new road surface 2, and the locking block 202 is engaged with the inside of the locking groove 102 at the bottom of the connecting groove 101. The end of the locking groove 102 near the old road surface 1 is inclined to both sides. The top of the connecting net 401 is in contact with the top foundation 402 and the top of the support beam 403. The bottom of the old road surface 1 is in close contact with the top foundation 402 and the top of the support beam 403. The top of the support column 5 passes through the top foundation 402 and the support beam 403 and connects with the inside of the new road surface 2. A connecting steel bar 501 is provided through the inside of the locking groove 102.

[0029] The connecting groove 101 of the old road surface 1 and the connecting groove 201 of the new road surface 2 fit together. At the same time, the old road surface 1 and the new road surface 2 are tightly connected by the locking block 202 and the locking groove 102. Since the locking groove 102 is provided with connecting steel bars 501, and the two ends of the connecting steel bars 501 are connected to the old road surface 1 and the new road surface 2 respectively, the connection between the old road surface 1 and the new road surface 2 is further maintained, and the tensile strength is improved.

[0030] To prevent uneven settlement of the newly constructed foundation, a connecting mesh 401 is installed at the top of the bottom foundation 4, where the support column 5 penetrates the interior of the top foundation 402 and the support beam 403. The connecting mesh 401 is fixedly connected to the support column 5 inside the top foundation 402 and the support beam 403. A fixing reinforcing bar 502 is installed at the bottom of the connecting reinforcing bar 501, and the fixing reinforcing bar 502 penetrates the interior of the top foundation 402 and the support beam 403, connecting to the interior of the old foundation 3. Multiple prestressed tie bars 503 are inclinedly fixedly connected to the side of the support column 5 inside the support beam 403 closest to the old foundation 3. The spatial mesh reinforcement system formed by the connecting reinforcing bar 501 and the fixing reinforcing bar 502, as simulated using finite element software, can extend the fatigue life of the pavement.

[0031] Because the connecting net 401 is fixedly connected to the support column 5, and the top of the connecting net 401 is respectively provided with a top foundation 402 and a support beam 403, the support columns 5 inside the top foundation 402 and the support beam 403 are connected and fixed by fixed steel bars 502, thus enabling the support columns 5 to be connected and fixed. At the same time, by setting the prestressed tie bars 503 with an optional horizontal tilt angle of 30-45°, the tensile strength of the bottom foundation 4 and the top foundation 402 is improved, avoiding uneven settlement. This utility model significantly reduces the risk of differential settlement between new and old roadbeds through the synergistic effect of the support column 5, the prestressed tie bars 503, and the connecting net 401.

[0032] In use, it is convenient to excavate on one side of the old road surface 1 that needs to be widened, and then place the prestressed tie bar 503 at an angle in the corresponding old foundation 3 to lay the bottom foundation 4. The bottom foundation 4 has a support column 5 installed through it, and a corresponding connecting net 401 is set on the top of the bottom foundation 4, which can effectively improve the integrity of the bottom foundation 4. At the same time, since the connecting net 401 is fixedly connected to the support column 5, and the top of the connecting net 401 is respectively set with the top foundation 402 and the support beam 403, the support column 5 inside the top foundation 402 and the support beam 403 are connected and fixed by the fixed steel bar 502, which can make the support column 5 connected and fixed. At the same time, the inclined prestressed tie bar 503 can prevent the support column 5 from tilting away from the old foundation 3, thereby improving the tensile strength of the bottom foundation 4 and the top foundation 402, avoiding uneven settlement, and thus ensuring the support for the newly built road surface 2 on top.

[0033] During construction, a connecting groove 101 can be made at the top of the side of the old road surface 1 closest to the new road surface 2, and a locking groove 102 can be made at the bottom of the connecting groove 101. This allows the connecting groove 101 of the old road surface 1 to fit snugly against the connecting groove 201 of the new road surface 2. At the same time, the locking block 202 and the locking groove 102 engage to maintain a tight connection between the old road surface 1 and the new road surface 2. Furthermore, the prefabricated assembly structure of the locking block 202 and the locking groove 102 can shorten the construction period compared with traditional cast-in-place connections. Because the slot 102 is equipped with connecting steel bars 501, and the two ends of the connecting steel bars 501 are connected to the old road surface 1 and the newly built road surface 2 respectively, the connection between the old road surface 1 and the newly built road surface 2 is further maintained, and the tensile strength is improved. Moreover, during use, the bottom of the newly built road surface 2 is fixedly connected to the top of the support column 5 to avoid the expansion joints caused by uneven settlement of the newly built road surface 2. At the same time, under the support of the support beam 403, the support height of the side of the newly built road surface 2 closer to the old road surface 1 can be further maintained, so that the height of the newly built road surface 2 and the old road surface 1 are consistent.

[0034] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A new and old roadbed splicing structure, including an old road surface (1), characterized in that: A new road surface (2) is provided on one side of the old road surface (1), an old foundation (3) is provided at the bottom of the old road surface (1), a bottom foundation (4) is provided at the bottom of the new road surface (2), and multiple support columns (5) are installed at the bottom of the new road surface (2). The old road surface (1) has a connecting groove (101) on one side near the newly built road surface (2), and multiple slots (102) are provided inside the bottom end of the connecting groove (101). The newly constructed road surface (2) has a connecting groove (201) on the side of the bottom near the old road surface (1), and the connecting groove (201) has multiple card blocks (202) corresponding to the card slot (102). The bottom foundation (4) is provided with a top foundation (402) on the side away from the old road surface (1), and a support beam (403) is provided on the side of the top foundation (402) close to the old road surface (1).

2. The new and old roadbed splicing structure according to claim 1, characterized in that: The bottom of the old foundation (3) is provided with a soil layer (301), and curb stones (302) are provided on the side of the old road surface (1) and the newly built road surface (2) that are far apart from each other.

3. The new and old roadbed splicing structure according to claim 1, characterized in that: The connecting groove (101) is engaged with the connecting groove (201) at the bottom of one side of the newly built road surface (2), and the locking block (202) is engaged with the slot (102) at the bottom of the connecting groove (101), and the end of the slot (102) near the old road surface (1) is inclined to both sides.

4. The new and old roadbed splicing structure according to claim 1, characterized in that: The support column (5) penetrates the interior of the top foundation (402) and the support beam (403). A connecting net (401) is provided at the top of the bottom foundation (4). The connecting net (401) is fixedly connected to the support column (5) inside the top foundation (402) and the support beam (403).

5. The new and old roadbed splicing structure according to claim 4, characterized in that: The top of the connecting net (401) is attached to the top of the top foundation (402) and the top of the support beam (403), the bottom of the old road surface (1) is attached to the top of the top foundation (402) and the top of the support beam (403), and the top of the support column (5) is connected to the interior of the new road surface (2) through the top foundation (402) and the support beam (403).

6. The new and old roadbed splicing structure according to claim 1, characterized in that: The slot (102) is provided with a connecting steel bar (501) running through it. The bottom end of the connecting steel bar (501) is provided with a fixing steel bar (502). The fixing steel bar (502) runs through the interior of the top foundation (402) and the support beam (403) and connects to the interior of the old foundation (3). The support column (5) inside the support beam (403) is inclined and fixedly connected with multiple prestressed tie bars (503) on the side close to the old foundation (3).

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