The application discloses a stepped new and old roadbed splicing embedded connecting block group.

Abstract

The utility model discloses a kind of embedded connection block groups of stepped new and old roadbed splicing, it is related to road engineering technical field, including old roadbed, the right side of old roadbed is ladder-shaped as a whole, circular groove is successively set from top to bottom in the right side of old roadbed, connecting strip is placed on each ladder face of the right side of old roadbed, the right side end of each connecting strip is aligned, two through slots are set in the inside of each connecting strip, and one U-shaped reinforcing bar is inserted in the inside of two through slots in the same connecting strip;Connecting strip is set on the ladder face of old roadbed, the U-shaped reinforcing bar in the connecting strip is penetrated through itself and inserted in the circular groove in old roadbed, can improve the stability of new and old roadbed connection, support plate, long slot, vertical reinforcing bar, triangular strip, round rod etc. are set in the right side of connecting strip, and connecting structure is stable, stress concentration is dispersed, and, modified polyurethane is injected in cavity to form continuous bonding layer, which can reduce the risk of cracking.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, and in particular to a stepped splicing interlocking connecting block assembly for new and old roadbeds. Background Technology

[0002] Road engineering refers to the entire process of planning, designing, constructing, maintaining, and managing roads, as well as the physical engineering works involved. Like any other type of civil engineering, road engineering has distinct technical, economic, and managerial characteristics.

[0003] In road engineering, traditional methods for splicing new and old roadbeds often involve direct splicing or setting up stepped transition structures. However, these methods are prone to cracking at the splicing interface, leading to uneven settlement, insufficient interface bonding strength, and weak shear resistance, which need to be improved. Therefore, a stepped interlocking connection block group for splicing new and old roadbeds is designed to enhance the stability of the splicing through a stepped interlocking structure. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to provide a stepped interlocking connecting block assembly for splicing new and old roadbeds, thereby solving the problems mentioned in the background art.

[0005] Technical Solution: A stepped interlocking connecting block assembly for splicing old and new roadbeds, comprising an old roadbed, wherein the right side of the old roadbed is generally stepped, and circular grooves are sequentially formed from top to bottom on the right side of the old roadbed. Connecting strips are placed on each stepped surface of the right side of the old roadbed, with multiple connecting strips in total. The right ends of each connecting strip are aligned, and two through grooves are formed inside each connecting strip. A U-shaped steel bar is inserted into the two through grooves within the same connecting strip, with one end of the U-shaped steel bar penetrating into the interior of the circular groove. The circular groove insertion connection is described above. A support plate is provided at the right end of the multiple connecting strips. The support plate is glued and fixed to the connecting strips. An elongated groove is opened on the left side of the support plate. The right end of the U-shaped steel bar is placed inside the elongated groove. Vertical steel bars are inserted into the right side of the multiple U-shaped steel bars. Several triangular strips are provided at the right end of the support plate. The triangular strips are fixedly connected to the support plate. Several round rods are provided at the lower right side of each triangular strip. The round rods are welded and fixed to the triangular strips. A new roadbed is installed on the right side of the triangular strips and the round rods.

[0006] Furthermore, there is a cavity between the old roadbed and the connecting strip, and modified polyurethane is injected into the cavity to form a continuous adhesive layer.

[0007] Furthermore, the surfaces of the connecting strip and the support plate are coated with a hydrophobic coating.

[0008] Furthermore, the depth of the circular groove is 20-25cm.

[0009] Beneficial effects:

[0010] In this invention, a connecting strip is provided on the stepped surface of the old roadbed. The U-shaped steel bar in the connecting strip runs through itself and is inserted into the circular groove in the old roadbed, which can improve the stability of the connection between the old and new roadbeds. Support plates, long grooves, vertical steel bars, triangular bars, and round rods are provided on the right side of the connecting strip, which makes the connection structure stable, disperses stress concentration, and injects modified polyurethane into the cavity to form a continuous adhesive layer, which can reduce the risk of cracking.

[0011] The interlocking connecting block assembly designed in this utility model can be spliced ​​together with the old roadbed on the one hand, and has strong shear resistance, thus extending the service life of the spliced ​​structure on the other hand. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This utility model Figure 1 A schematic diagram of the right-view structure in the middle;

[0014] Figure 3 This utility model Figure 1 A partial top-view structural diagram.

[0015] In the diagram: 1. Old roadbed; 2. Circular groove; 3. U-shaped steel bar; 4. Through groove; 5. Connecting strip; 6. Support plate; 7. Triangular strip; 8. Round rod; 9. New roadbed; 10. Long groove; 11. Vertical steel bar; 12. Cavity. Detailed Implementation

[0016] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] According to the appendix Figure 1-3This invention provides a stepped interlocking connecting block assembly for splicing old and new roadbeds, comprising an old roadbed 1. The right side of the old roadbed 1 is generally stepped, with circular grooves 2 sequentially formed from top to bottom on the right side of the old roadbed 1. Connecting strips 5 are placed on each stepped surface of the right side of the old roadbed 1. There are multiple connecting strips 5, with the right ends of each connecting strip 5 aligned. Two through grooves 4 are formed inside each connecting strip 5. A U-shaped steel bar 3 is inserted into the two through grooves 4 within the same connecting strip 5. One end of the U-shaped steel bar 3 penetrates into the interior of the circular groove 2, and the U-shaped steel bar 3 is aligned with the circular groove 2. The slot 2 is plugged in. A support plate 6 is set at the right end of multiple connecting strips 5. The support plate 6 is glued and fixed to the connecting strips 5. A long slot 10 is opened on the left side of the support plate 6. The right end of the U-shaped steel bar 3 is placed inside the long slot 10. Vertical steel bars 11 are inserted into the right side of multiple U-shaped steel bars 3. Several triangular bars 7 are set at the right end of the support plate 6. The triangular bars 7 are fixedly connected to the support plate 6. Several round rods 8 are set at the lower right side of each triangular bar 7. The round rods 8 are welded and fixed to the triangular bars 7. A new roadbed 9 is installed on the right side of the triangular bars 7 and the round rods 8.

[0019] In this embodiment, there is a cavity 12 between the old roadbed 1 and the connecting strip 5, and modified polyurethane is injected into the cavity 12 to form a continuous adhesive layer to improve the stability of the connection.

[0020] In this embodiment, the surfaces of the connecting strip 5 and the support plate 6 are coated with a hydrophobic coating, which forms a superhydrophobic surface to prevent the interlocking connecting block assembly from getting wet.

[0021] In this embodiment, the depth of the circular groove 2 is 20-25cm, and the left end of the U-shaped steel bar 3 can be inserted into the two circular grooves 2.

[0022] The working principle of this device is:

[0023] The designed interlocking connecting block assembly has a connecting strip 5 set on the stepped surface of the old roadbed 1. The U-shaped steel bar 3 in the connecting strip 5 runs through itself and is inserted into the circular groove 2 in the old roadbed 1, which can improve the stability of the connection between the new and old roadbeds. On the right side of the connecting strip 5, a support plate 6, a long groove 10, a vertical steel bar 11, a triangular strip 7, a round rod 8, etc. are set. The connection structure is stable and stress concentration is dispersed. Furthermore, modified polyurethane is injected into the cavity 12 to form a continuous bonding layer, which can reduce the risk of cracking and extend the service life of the spliced ​​structure.

[0024] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A stepped splicing interlocking block assembly for new and old roadbeds, comprising an old roadbed (1), characterized in that: The right side of the old roadbed (1) is generally stepped. Circular grooves (2) are sequentially opened from top to bottom on the right side of the old roadbed (1). Connecting strips (5) are placed on each step surface on the right side of the old roadbed (1). There are multiple connecting strips (5). The right ends of each connecting strip (5) are aligned. Two through grooves (4) are opened inside each connecting strip (5). A U-shaped steel bar (3) is inserted into the two through grooves (4) within the same connecting strip (5). One end of the U-shaped steel bar (3) penetrates into the interior of the circular groove (2), and the U-shaped steel bar (3) is inserted into and connected to the circular groove (2). The right ends of the multiple connecting strips (5) are provided with... A support plate (6) is attached and fixed to the connecting strip (5). A long groove (10) is opened on the left side of the support plate (6). The right end of the U-shaped steel bar (3) is placed inside the long groove (10). Vertical steel bars (11) are inserted into the right side of multiple U-shaped steel bars (3). Several triangular bars (7) are provided on the right side of the support plate (6). The triangular bars (7) are fixedly connected to the support plate (6). Multiple round rods (8) are provided on the lower right side of each triangular bar (7). The round rods (8) are welded and fixed to the triangular bars (7). A new roadbed (9) is installed on the right side of the triangular bars (7) and the round rods (8).

2. The interlocking connecting block assembly for splicing new and old roadbeds according to claim 1, characterized in that: There is a cavity (12) between the old roadbed (1) and the connecting strip (5), and the cavity (12) is filled with modified polyurethane to form a continuous adhesive layer.

3. The interlocking connecting block assembly for splicing new and old roadbeds according to claim 1, characterized in that: The surfaces of the connecting strip (5) and the support plate (6) are coated with a hydrophobic coating.

4. The interlocking connecting block assembly for splicing new and old roadbeds according to claim 1, characterized in that: The depth of the circular groove (2) is 20-25cm.

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