Roadbed widening structure and construction method thereof

Abstract

The application discloses a roadbed widening structure and a construction method thereof, and belongs to the technical field of roadbed widening structures.The roadbed widening structure comprises an old roadbed and a new roadbed, a step plate is arranged at the joint of the old roadbed and the new roadbed, a cross type reinforcing mechanism is arranged on the step plate, the cross type reinforcing mechanism comprises vertical reinforcing ribs, horizontal reinforcing ribs and vertical anchor rods, the vertical reinforcing ribs are vertically fixed on the upper surface of the step plate, the horizontal reinforcing ribs vertically penetrate the step plate and the vertical reinforcing ribs, the step plate is fixed on the old roadbed through the vertical anchor rods, and the bottom end of the vertical anchor rod penetrates and connects the horizontal reinforcing rib; the cross type reinforcing mechanism further comprises a splicing structure arranged between the vertical reinforcing ribs and the horizontal reinforcing ribs; and the roadbed widening structure has the advantages of stable roadbed structure, convenient installation and high construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of roadbed widening technology, specifically to a roadbed widening structure and its construction method. Background Technology

[0002] During operation, as the number of vehicles on the road increases, highways may gradually become unable to meet functional needs. At this point, it is necessary to widen and reconstruct the roadbed, which involves adding a new section of roadbed at the edge of the old roadbed and connecting the two to widen the roadbed and meet the passage requirements of vehicles.

[0003] Common roadbed widening structures mainly rely on setting a stepped surface at the junction of the old and new roadbeds, and setting vertical and horizontal reinforcing bars on the stepped surface to connect the old and new roadbeds, thereby achieving the purpose of roadbed widening.

[0004] The problems with the existing technology are that the transition surfaces between the new and old roadbeds are not effectively supported and protected, making them prone to collapse or subsidence, and the stability of the roadbed after widening is insufficient; there is a lack of connection measures between the vertical and horizontal reinforcing bars on the steps, which fails to provide mutual restraint and structural reinforcement; and some reinforcing bars are connected by on-site welding, which results in low construction efficiency and the need to lay electrical equipment. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the prior art by providing a roadbed widening structure and its construction method. This solution has the advantages of stable roadbed structure, convenient installation, and high construction efficiency.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a roadbed widening structure, including an old roadbed and a new roadbed, wherein a stepped plate is provided at the junction of the old roadbed and the new roadbed, and a cross-type reinforcing mechanism is provided on the stepped plate, the cross-type reinforcing mechanism including a vertical reinforcing rib, a horizontal reinforcing rib and a vertical anchor rod, the vertical reinforcing rib being vertically fixed to the upper surface of the stepped plate, the horizontal reinforcing rib being horizontally penetrating the stepped plate and the vertical reinforcing rib, the stepped plate being fixed to the old roadbed by the vertical anchor rod, and the bottom end of the vertical anchor rod being connected through the horizontal reinforcing rib;

[0007] The cross-type reinforcing mechanism also includes an insertion structure disposed between the vertical reinforcing ribs and the horizontal reinforcing ribs.

[0008] In the above scheme, a stepped plate is connected between the old and new roadbeds to reinforce and support the stepped slope at the connection between the old and new roadbeds. Vertical and horizontal reinforcing bars of the cross-type reinforcement mechanism are used to connect and anchor the old roadbed and the stepped plate. The bottom end of the vertical anchor is inserted into the interior of the old roadbed, and a horizontal through hole is opened at the bottom end of the vertical anchor to connect the horizontal reinforcing bar. The horizontal reinforcing bar and the vertical anchor are used to connect and anchor the new roadbed and the stepped plate, improving the stability of the overall roadbed structure. Horizontal through holes corresponding to the horizontal reinforcing bars are opened on the stepped plate, vertical anchor, and vertical reinforcing bars to allow the horizontal reinforcing bars to pass through and connect. An insertion structure is set to ensure the connection and positioning of the horizontal and vertical reinforcing bars. The structure of horizontal reinforcing bars passing through and the insertion structure improve the stability of the anchorage between the cross-type reinforcement mechanism and the old and new roadbeds.

[0009] Furthermore, the plug-in structure includes a T-shaped plug and a limiting component disposed on the T-shaped plug. The transverse reinforcing rib has a plug hole. The T-shaped plug is engaged with the top of the vertical reinforcing rib by the limiting component, and the bottom end of the T-shaped plug extends into the plug hole.

[0010] The top of the vertical reinforcing rib has a connecting hole that communicates with the horizontal through hole. The T-shaped plug of the plug-in structure is inserted into the connecting hole and its bottom end cooperates with the plug hole to lock the horizontal reinforcing rib. The limiting component is engaged and fastened with the vertical reinforcing rib.

[0011] Furthermore, the limiting component includes a limiting engagement part disposed on the top side of the T-shaped insert, a triangular locking block is fixed on the inner surface of the limiting engagement part, and a side locking groove is opened on the top side of the vertical reinforcing rib, the triangular locking block is connected in the side locking groove.

[0012] The triangular locking block of the limiting locking part engages with the side locking groove at the top of the vertical reinforcing rib to ensure the connection stability of the T-shaped insert.

[0013] Furthermore, the limiting engagement portion includes at least one vertical connecting block.

[0014] Vertical connecting blocks are used to position and connect the triangular blocks. Multiple blocks can be set to ensure the stability of the locking connection.

[0015] Furthermore, the cross-type reinforcing mechanism also includes a positioning structure disposed on the step plate. The positioning structure includes a bushing embedded in the step plate, a transverse reinforcing rib passing through the inner hole of the bushing, a positioning slider fixed in the inner hole of the bushing, and a positioning groove for cooperating with the positioning slider on the surface of the transverse reinforcing rib, and the end of the positioning groove communicating with one end face of the transverse reinforcing rib.

[0016] A bushing is installed on the stepped plate to connect the transverse reinforcing ribs. A positioning slider is installed in the inner hole of the bushing to slide with the positioning groove, thereby positioning the circumferential angle of the transverse reinforcing ribs and ensuring the connection between the plug-in structure and the transverse reinforcing ribs. The positioning groove is connected to the end face of the transverse reinforcing ribs to facilitate plug-in connection.

[0017] Furthermore, a positioning pad is fixed in the inner hole of the bushing, and a circular protrusion is provided on the surface of the positioning pad. The circular protrusion is arranged opposite to the positioning slider, and a positioning groove is provided on the transverse reinforcing rib for cooperating with the circular protrusion.

[0018] A positioning pad structure with a circular protrusion is used to assist in positioning in conjunction with the positioning slot on the transverse reinforcing rib. The circular protrusion is positioned opposite to the positioning slider to ensure the positioning of the transverse reinforcing rib and facilitate the connection of subsequent plug-in structures.

[0019] Furthermore, a slope layer is provided at the edge of the new roadbed, and a drainage ditch is provided on the slope layer. A water-guiding inclined surface communicating with the drainage ditch is provided on the top surface of the slope layer.

[0020] The roadbed edges are reinforced by slope layers, and water diversion ramps and drainage ditches are set up to facilitate drainage.

[0021] Furthermore, the cross-type reinforcing mechanism includes a vertical connecting rib disposed between adjacent vertical reinforcing ribs, with both ends of the vertical connecting rib respectively penetrating and connecting to the vertical reinforcing rib, and the plug-in structure penetrating the vertical connecting rib.

[0022] The stability of the connection between the stepped slab and the new roadbed, as well as the stability of the cross-type reinforcement mechanism, are enhanced by setting vertical connecting ribs. The vertical connecting ribs are positioned by inserting a structure through the vertical reinforcing ribs. The structure is simple and easy to install.

[0023] Furthermore, the step plate is provided with anchor bolt holes, and the anchor bolt holes are provided with positioning edges. The shape of the vertical anchor bolt corresponds to the anchor bolt hole.

[0024] The circumferential direction of the vertical anchor rod is positioned by the positioning edge of the anchor rod hole, ensuring that the transverse through hole at the bottom of the vertical anchor rod and the transverse reinforcing bar are properly inserted.

[0025] A construction method for the above-mentioned roadbed widening structure includes the following steps:

[0026] Step 1: First, create a stepped road slope at the edge of the old roadbed;

[0027] Step 2: Fix the stepped slab to the stepped slope at the edge of the old roadbed using vertical anchor bolts to reinforce and support the stepped slope;

[0028] Step 3: Insert the transverse reinforcing ribs through the step plate, vertical reinforcing ribs, and vertical anchor rods to form an interlocking structure;

[0029] Step 4: Lay the new roadbed on the stepped slab, and connect the vertical and horizontal reinforcing bars in the new roadbed.

[0030] In the above scheme, step one involves constructing the old roadbed, creating a stepped road slope, and cleaning the construction area to facilitate the installation of the step slabs. Step two involves fixing the step slabs to the stepped road slope using vertical anchor bolts to support and reinforce the surface of the stepped road slope. Step three involves connecting and fixing the transverse reinforcing ribs to stabilize the cross-reinforcing structure. Step four involves constructing the new roadbed, connecting the new and old roadbeds together through the step slabs and the cross-reinforcing structure.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. By setting step plates at the junction of the old and new roadbeds for support and reinforcement, and by using a cross-type reinforcement mechanism to connect the old and new roadbeds with the step plates, the overall structural stability of the old and new roadbeds is ensured, and collapse and subsidence problems are avoided.

[0033] 2. By connecting the vertical anchor rods and horizontal reinforcing bars to the old roadbed through on-site hammering, horizontal through holes are opened on the vertical anchor rods and vertical reinforcing bars to connect with the horizontal reinforcing bars, and the horizontal reinforcing bars are limited by the plug-in structure, the stress stability of the cross-type reinforcement mechanism is ensured. The prefabricated installation and fixing scheme does not require on-site welding, making installation convenient and construction efficiency high.

[0034] 3. The installation angle of the vertical anchor is limited by the anchor holes, and the horizontal reinforcing rib is positioned by the positioning structure on the stepped plate and the horizontal through holes of the vertical reinforcing rib, which facilitates the connection and cooperation between the vertical anchor and the horizontal reinforcing rib, making the installation convenient and quick;

[0035] 4. By setting a positioning structure on the step plate, the installation angle and distance of the horizontal reinforcing ribs are guaranteed, which facilitates the connection and fixation of the horizontal reinforcing ribs by the plug-in structure; the limiting and locking part of the plug-in structure is engaged with the side slot of the vertical reinforcing rib, which does not require welding and is easy to install. Attached Figure Description

[0036] Figure 1 This is a cross-sectional view of a roadbed widening structure according to Embodiment 1 of the present invention;

[0037] Figure 2 This is a cross-sectional view of the positioning structure in Embodiment 1 of the present invention;

[0038] Figure 3 This is a cross-sectional view of the plug-in structure in Embodiment 1 of the present invention;

[0039] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0040] Figure 5 This is a schematic diagram of the anchor hole structure in Embodiment 1 of the present invention;

[0041] Figure 6 This is a perspective view of the vertical connecting ribs in Embodiment 2 of the present invention;

[0042] Figure 7 This is a cross-sectional view of the plug-in structure in Embodiment 2 of the present invention;

[0043] In the diagram: 1. Old roadbed; 2. New roadbed; 3. Slope layer; 31. Drainage ditch; 32. Water diversion slope; 4. Stepped slab; 51. Vertical reinforcing bar; 52. Horizontal reinforcing bar; 53. Positioning structure; 531. Bushing; 532. Positioning slider; 533. Positioning groove; 534. Positioning pad; 535. Circular protrusion; 536. Positioning slot; 54. Vertical anchor bolt; 55. Insertion structure; 551. T-shaped insert; 552. Insertion hole; 553. Limiting component; 5535. Limiting engagement part; 5536. Triangular locking block; 5537. Side slot; 56. Vertical connecting bar; 6. Anchor bolt hole; 61. Positioning edge. Detailed Implementation

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms front, back, left, right, etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0045] Example 1

[0046] like Figure 1-5As shown, a roadbed widening structure in this embodiment includes an old roadbed 1 and a new roadbed 2. A stepped plate 4 is provided at the junction of the old roadbed 1 and the new roadbed 2. A cross-type reinforcement mechanism is provided on the stepped plate 4. The cross-type reinforcement mechanism includes a vertical reinforcing rib 51, a horizontal reinforcing rib 52 and a vertical anchor rod 54. The vertical reinforcing rib 51 is vertically fixed to the upper surface of the stepped plate 4. The horizontal reinforcing rib 52 horizontally penetrates the stepped plate 4 and the vertical reinforcing rib 51. The stepped plate 4 is fixed to the old roadbed 1 by the vertical anchor rod 54. The bottom end of the vertical anchor rod 54 is connected to the horizontal reinforcing rib 52.

[0047] The cross-type reinforcing mechanism also includes an insertion structure 55 disposed between the vertical reinforcing rib 51 and the horizontal reinforcing rib 52.

[0048] In the above scheme, a stepped slab 4 is connected between the old roadbed 1 and the new roadbed 2 to reinforce and support the stepped slope at the connection between the old and new roadbeds 1. Vertical reinforcing ribs 51 and horizontal reinforcing ribs 52 of a cross-type reinforcement mechanism are used to connect and anchor the old roadbed 1 and the stepped slab 4. The bottom end of the vertical anchor rod 54 is inserted into the interior of the old roadbed 1, and a horizontal through hole is provided at the bottom end of the vertical anchor rod 54 to connect the horizontal reinforcing rib 52. The horizontal reinforcing rib 52 and the vertical anchor rod 54 are used to reinforce and support the stepped slope at the connection between the old and new roadbeds 1. The new roadbed 2 is connected and anchored to the step plate 4 to improve the stability of the overall roadbed structure. Horizontal through holes corresponding to the horizontal reinforcing bars 52 are opened on the step plate 4, vertical anchor rods 54, and vertical reinforcing bars 51 to allow the horizontal reinforcing bars 52 to pass through and connect. An insertion structure 55 is set to ensure the connection and positioning of the horizontal reinforcing bars 52 and the vertical reinforcing bars 51. Through the structure of the horizontal reinforcing bars 52 passing through and the insertion structure 55, the stability of the anchorage between the cross-type reinforcement mechanism and the old and new roadbeds 1 is improved.

[0049] The slope layer 3 is specifically a masonry layer, which is structurally stable and easy to construct. Vertical reinforcing bars 51 are vertically welded to the upper surface of the step plate 4. Several vertical reinforcing bars 51 are set parallel to each step of the step plate 4, with the vertical reinforcing bars 51 spaced 0.5m-1m apart. The vertical anchor rods 54 on each step correspond one-to-one with the vertical reinforcing bars 51, allowing the horizontal reinforcing bars 52 to pass through and connect.

[0050] Furthermore, the plug-in structure 55 includes a T-shaped plug 551 and a limiting component 553 disposed on the T-shaped plug 551. The transverse reinforcing rib 52 has a plug hole 552. The T-shaped plug 551 is engaged with the top of the vertical reinforcing rib 51 by the limiting component 553, and the bottom end of the T-shaped plug 551 extends into the plug hole 552.

[0051] The top of the vertical reinforcing rib 51 is provided with a connecting hole, which is connected to the horizontal through hole. The T-shaped plug 551 of the plug-in structure 55 is inserted into the connecting hole and its bottom end cooperates with the plug hole 552 to lock the horizontal reinforcing rib 52. The limiting component 553 is engaged and fastened with the vertical reinforcing rib 51.

[0052] Furthermore, the limiting component 553 includes a limiting engagement portion 5535 disposed on the top side of the T-shaped insert 551. A triangular locking block 5536 is fixed on the inner surface of the limiting engagement portion 5535. A side groove 5537 is opened on the top side of the vertical reinforcing rib 51, and the triangular locking block 5536 is connected in the side groove 5537.

[0053] The triangular locking block 5536 of the limiting locking part 5535 engages with the side locking groove 5537 at the top of the vertical reinforcing rib 51 to ensure the connection stability of the T-shaped insert 551.

[0054] Furthermore, the limiting engagement portion 5535 includes at least one vertical connecting block.

[0055] The triangular card block 5536 is connected and positioned by vertical connecting blocks. Multiple blocks can be set to ensure the stability of the card connection.

[0056] The side slot 5537 can be provided as multiple rectangular slots on the side of the vertical reinforcing rib 51 or an annular slot provided along the circumference.

[0057] Furthermore, the cross-type reinforcing mechanism also includes a positioning structure 53 disposed on the step plate 4. The positioning structure 53 includes a bushing 531 embedded in the step plate 4, a transverse reinforcing rib 52 passing through the inner hole of the bushing 531, a positioning slider 532 fixed in the inner hole of the bushing 531, and a positioning groove 533 for cooperating with the positioning slider 532 on the surface of the transverse reinforcing rib 52, and the end of the positioning groove 533 communicating with one end face of the transverse reinforcing rib 52.

[0058] A bushing 531 is provided on the step plate 4 to connect the transverse reinforcing rib 52. A positioning slider 532 is provided in the inner hole of the bushing 531 to slide and connect with the positioning groove 533, thereby positioning the circumferential angle of the transverse reinforcing rib 52 and ensuring the connection between the plug-in structure 55 and the transverse reinforcing rib 52. The positioning groove 533 is connected to the end face of the transverse reinforcing rib 52, which facilitates the plug-in connection.

[0059] Furthermore, a positioning pad 534 is fixed in the inner hole of the bushing 531. The surface of the positioning pad 534 is provided with a circular protrusion 535. The circular protrusion 535 is arranged opposite to the positioning slider 532. The transverse reinforcing rib 52 is provided with a positioning groove 536 for cooperating with the circular protrusion 535.

[0060] The positioning pad 534 with a circular protrusion 535 is used to assist in positioning in conjunction with the positioning slot 536 on the transverse reinforcing rib 52. The circular protrusion 535 is positioned opposite to the positioning slider 532 to ensure the positioning of the transverse reinforcing rib 52, which facilitates the connection of the subsequent plug-in structure 55.

[0061] The positioning pad 534 can be made of rubber or plastic.

[0062] Furthermore, a slope layer 3 is provided at the edge of the new roadbed 2, and a drainage ditch 31 is provided on the slope layer 3. A water-guiding inclined surface 32 communicating with the drainage ditch 31 is provided on the top surface of the slope layer 3.

[0063] The roadbed edge is reinforced by the slope layer 3, and the water diversion slope 32 and drainage ditch 31 are set to facilitate drainage.

[0064] Furthermore, the step plate 4 is provided with anchor bolt holes 6, and the anchor bolt holes 6 are provided with positioning edges 61. The shape of the vertical anchor bolt 54 corresponds to that of the anchor bolt holes 6.

[0065] The vertical anchor 54 is positioned circumferentially by the positioning edge 61 of the anchor hole 6, ensuring that the transverse through hole at the bottom of the vertical anchor 54 is engaged with the transverse reinforcing rib 52.

[0066] A construction method for the above-mentioned roadbed widening structure includes the following steps:

[0067] Step 1: First, create a stepped road slope at the edge of the old roadbed 1;

[0068] Step 2: Fix the stepped plate 4 to the stepped slope at the edge of the old roadbed 1 using vertical anchor bolts 54 to reinforce and support the stepped slope.

[0069] Step 3: Insert the transverse reinforcing rib 52 through the step plate 4, the vertical reinforcing rib 51 and the vertical anchor rod 54, and set up the plug-in structure 55;

[0070] Step 4: Lay the new roadbed 2 on the step slab 4, and connect the vertical reinforcing bars 51 and the horizontal reinforcing bars 52 in the new roadbed 2.

[0071] In the above scheme, step one is to construct the old roadbed 1, create a stepped road slope, and clean the construction area to facilitate the installation of the step plate 4. Step two is to fix the step plate 4 on the stepped road slope with vertical anchor rods 54 to support and strengthen the surface of the stepped road slope. Step three is to connect and fix the transverse reinforcing ribs 52 to stabilize the cross-type reinforcing mechanism structure. Step four is to construct the new roadbed 2, so that the new roadbed 2 and the old roadbed 1 are connected as one unit through the step plate 4 and the cross-type reinforcing mechanism.

[0072] Vertical anchor bolts 54 and horizontal reinforcing bars 52 can be driven into the embankment section of the old roadbed 1 by equipment. When installing the horizontal reinforcing bars 52, they can be connected and positioned by the vertical reinforcing bars 51 and the step plate 4. Finally, a slope layer 3 is laid at the slope of the new roadbed 2, and drainage ditches 31 and water diversion slopes 32 are opened to complete the roadbed widening structure.

[0073] Example 2

[0074] The roadbed widening structure in this embodiment is an improvement on Embodiment 1, with the following modifications.

[0075] like Figure 6-7 As shown, the cross-type reinforcing mechanism further includes a vertical connecting rib 56 disposed between adjacent vertical reinforcing ribs 51, with both ends of the vertical connecting rib 56 respectively penetrating and connecting the vertical reinforcing ribs 51, and the plug-in structure 55 penetrating the vertical connecting rib 56.

[0076] The connection stability between the step plate 4 and the new roadbed 2 and the stability of the cross-type reinforcement mechanism are enhanced by setting vertical connecting ribs 56. The vertical connecting ribs 56 penetrate the vertical reinforcing ribs 51 and are positioned by plug-in structure 55. The structure is simple and easy to install.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roadbed widening structure, comprising an old roadbed (1) and a new roadbed (2), characterized in that, A step plate (4) is provided at the junction of the old roadbed (1) and the new roadbed (2). A cross-type reinforcement mechanism is provided on the step plate (4). The cross-type reinforcement mechanism includes a vertical reinforcing rib (51), a horizontal reinforcing rib (52), and a vertical anchor rod (54). The vertical reinforcing rib (51) is vertically fixed to the upper surface of the step plate (4). The horizontal reinforcing rib (52) horizontally penetrates the step plate (4) and the vertical reinforcing rib (51). The step plate (4) is fixed to the old roadbed (1) by the vertical anchor rod (54). The bottom end of the vertical anchor rod (54) is connected to the horizontal reinforcing rib (52). The cross-type reinforcing mechanism further includes a plug-in structure (55) disposed between the vertical reinforcing rib (51) and the horizontal reinforcing rib (52); the plug-in structure (55) includes a T-shaped plug (551) and a limiting component (553) disposed on the T-shaped plug (551), the horizontal reinforcing rib (52) has a plug hole (552), and the T-shaped plug (551) is installed at the top of the vertical reinforcing rib (51) through the limiting component (553), and The bottom end of the T-shaped plug (551) extends into the plug hole (552); the limiting component (553) includes a limiting engagement part (5535) provided on the top side of the T-shaped plug (551), a triangular locking block (5536) is fixed on the inner surface of the limiting engagement part (5535), and a side groove (5537) is opened on the top side of the vertical reinforcing rib (51), and the triangular locking block (5536) is connected in the side groove (5537); The cross-type reinforcing mechanism also includes a positioning structure (53) disposed on the step plate (4). The positioning structure (53) includes a bushing (531) embedded in the step plate (4). A transverse reinforcing rib (52) passes through the inner hole of the bushing (531). A positioning slider (532) is fixed in the inner hole of the bushing (531). A positioning groove (533) for cooperating with the positioning slider (532) is provided on the surface of the transverse reinforcing rib (52). The end of the positioning groove (533) communicates with one end face of the transverse reinforcing rib (52). The inner hole of the bushing (531) is fixed with a positioning pad (534). The surface of the positioning pad (534) is provided with a circular protrusion (535). The circular protrusion (535) is arranged opposite to the positioning slider (532). The transverse reinforcing rib (52) is provided with a positioning groove (536) for cooperating with the circular protrusion (535).

2. The roadbed widening structure according to claim 1, characterized in that: The limiting engagement part (5535) includes at least one vertical connecting block.

3. The roadbed widening structure according to claim 1, characterized in that: A slope layer (3) is provided at the edge of the new roadbed (2), and a drainage ditch (31) is provided on the slope layer (3). A water-diverting inclined surface (32) communicating with the drainage ditch (31) is provided on the top surface of the slope layer (3).

4. The roadbed widening structure according to claim 1, characterized in that: The cross-type reinforcing mechanism includes a vertical connecting rib (56) disposed between adjacent vertical reinforcing ribs (51), with both ends of the vertical connecting rib (56) respectively penetrating and connecting the vertical reinforcing rib (51), and the plug-in structure (55) penetrating the vertical connecting rib (56).

5. A roadbed widening structure according to claim 1, characterized in that: An anchor hole (6) is provided on the step plate (4), and a positioning edge (61) is provided on the anchor hole (6). The shape of the vertical anchor (54) corresponds to the anchor hole (6).

6. A construction method for a roadbed widening structure as described in any one of claims 1-5, characterized in that: Includes the following steps: Step 1: First, create a stepped road slope at the edge of the old roadbed (1); Step 2: Fix the step plate (4) to the stepped slope at the edge of the old roadbed (1) using vertical anchor rods (54) to reinforce and support the stepped slope; Step 3: Horizontally pass the transverse reinforcing bar (52) through the vertical reinforcing bar (51), the step plate (4) and the vertical anchor rod (54), and set up the plug-in structure (55); Step 4: Lay the new roadbed (2) on the step plate (4) and connect the vertical reinforcing bars (51) and the horizontal reinforcing bars (52) in the new roadbed (2).

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