A transition structure for a mixed traffic intersection with trams

Abstract

A transition structure for a mixed-traffic intersection with trams includes a tram-passing section and an intersection connection section at the mixed-traffic intersection; the tram-passing section includes a pavement layer, a roadbed, a subgrade, and an original roadbed; the intersection connection section includes a pavement structure surface layer, a pavement structure base layer, and an original roadbed; the roadbed is a concrete slab with concrete treads laid on both sides for connection; a plain concrete cushion layer is laid at the bottom of the roadbed and extends horizontally along the track to a position half the width of the bottom of the treads on both sides; a subgrade with an inverted trapezoidal cross-section is laid downwardly from the plain concrete cushion layer to connect with the original roadbed; the bottom of the pavement structure base layer connecting with the treads is lower than the plain concrete cushion layer, and a transition section with a bottom flush with the pavement structure base layer is laid between the plain concrete cushion layer, forming a connection surface with the original roadbed; the connection surface and the side of the subgrade form a regular trapezoidal contour surface, and the original roadbed is below the bottom of the subgrade. The present invention eliminates the problems of longitudinal seams and differential deformation in the connection section.

Description

Technical Field

[0001] The present invention relates to the field of track engineering technology and is applicable to a connecting section transition structure for modern trams and non-vehicles sharing the right of way and eliminating defects such as cracks and misalignment at intersections. The present invention specifically provides a connecting section transition structure for mixed traffic intersections where trams pass. Background Art

[0002] The connection between the track structure and the pavement structure in mixed traffic areas is a weak link in tram civil engineering projects. Many domestic lines have cracks or misalignment in the pavement at the connection points, which affects the comfort of traffic at intersections and seriously affects the appearance of intersections.

[0003] Tramway structures utilize settlement and bearing capacity control, while pavement structures utilize deflection control. Differences in design theory, control standards, and vehicle loads result in significant differences in structural combinations. Excessive differential deformation between the two structures can lead to longitudinal cracking in the asphalt pavement at the junction, exacerbated by frequent braking by vehicles at intersections.

[0004] The tram line's structure primarily consists of the roadbed, the surface layer of the subgrade, and the subgrade base. The depth of the subgrade treatment at intersections is generally around 1.5 meters. The pavement structure is a layered system consisting of a surface layer and a base layer, generally around 0.7 meters deep. Without special treatment, differential deformation is inevitable at the junctions between the structural layers.

[0005] In order to improve the comfort of vehicles passing through the intersection, reduce the defects at the structural joints, and improve the overall smoothness of the intersection, it is urgent to develop a mixed-traffic roadbed structure for tram traffic and set up a transition layout to achieve the above goals. Summary of the Invention

[0006] The present invention provides a transition structure of a connecting section of a mixed traffic intersection for trams, aiming to solve the technical problems of improving the comfort of vehicles passing through the intersection and eliminating defects at the structural connection.

[0007] The technical solutions of the present invention are as follows:

[0008] A transition structure for a mixed-traffic intersection where trams pass, comprising a tram passage section and an intersection transition section at the mixed-traffic intersection; the tram passage section comprises, from top to bottom, a pavement layer, a roadbed, a subgrade, and an original roadbed; the intersection transition section comprises, from top to bottom, a pavement structure surface layer, a pavement structure base layer, and an original roadbed; and is characterized in that:

[0009] The roadbed 100 is a one-piece concrete slab laid under the track at a mixed-traffic intersection. On both sides of the roadbed 100 in the transverse direction of the track, slabs 700 of the same thickness as the roadbed are laid in contact with each other. The slabs 700 are one-piece concrete slabs. A plain concrete cushion layer 800 is laid downward from the bottom of the roadbed 100 and extends transversely along the track to the bottom of the slabs 700 on both sides, reaching half the slab width.

[0010] A base bed 200 is laid downwardly below the plain concrete cushion layer 800. The transverse cross-section of the base bed is in an inverted trapezoidal shape and connects with the original roadbed 900. That is, the bottom ends of the base bed side surfaces 203 at both ends of the base bed are inclined toward the center line O of the railway line.

[0011] The intersection connection section is paved with the pavement structure surface layer 400 and the pavement structure base layer 500 in sequence from top to bottom; the pavement layer of the tram passage section is an integrally paved structural surface layer with the pavement structure surface layer 400, the pavement structure base layer 500 is connected to the outer side of the slab 700, and is paved downward along the outer side of the slab 700 to below the plain concrete cushion layer 800, and a transition section 600 is paved between the plain concrete cushion layer 800 and the pavement structure base layer, the transition section 600 is paved downward along the outer side of the plain concrete cushion layer 800 until the bottom is flush with the bottom of the pavement structure base layer 500 to form a connection surface 901 with the original roadbed 900; the inner side of the transition section 600 is integrally connected to the upper part of the connected base bed 200;

[0012] The original roadbed 900 is located below the regular trapezoidal contour surface formed by the connecting surfaces 901 on both sides of the track and the side surface 203 of the base bed and the bottom surface of the base bed.

[0013] The connecting section transition structure for a mixed traffic intersection for trams, wherein the concrete slab is a C40 concrete slab; and the plain concrete cushion layer is C20 plain concrete.

[0014] The described connecting section transition structure for a mixed traffic intersection for tram traffic, wherein the base bed 200 is a two-layer structure of a base bed surface layer 201 and a base bed bottom layer 202 laid downward in sequence below the plain concrete cushion layer 800, the base bed surface layer 201 is cement-stabilized gravel, and the base bed bottom layer 202 is group A and B fillers; the bottom of the transition section 600 is higher than the bottom of the base bed surface layer 201; the transition section 600 is cement-stabilized gravel; the bottom surface of the transition section and the bottom surface of the base bed bottom layer 202 are the original roadbed 900.

[0015] The transition structure of the connecting section of a mixed traffic intersection for tram traffic, wherein the structural surface layer 400 is laid in sequence from top to bottom with a surface layer 401, a middle surface layer 402, and a lower layer 403; wherein the surface layer 401 is rubber-modified asphalt concrete, the middle surface layer 402 is medium-grained asphalt concrete, and the lower layer 403 is coarse-grained asphalt concrete, and the layers are coated with tack coat oil to form a whole.

[0016] The described transition structure of the connecting section of a mixed traffic intersection for tram traffic, wherein the pavement structure base layer 500 is paved with three layers of upper base layer 501, lower base layer 502, and subbase layer 503 from top to bottom, each layer being lime fly ash stabilized gravel; the bottom surface of the subbase layer 503 is the original roadbed 900.

[0017] The present invention relates to a transition structure for a connecting section of a mixed traffic intersection for tram traffic, wherein the tread 700 is 5.0 m long along the track and is equal to the roadbed 100, and is 1.5 m wide along the track; the plain concrete cushion layer 800 is 10 cm thick; the base bed surface layer 201 is 400 mm thick, and the base bed bottom layer 202 is 540 mm thick; the pavement structure surface layer 400 is 17 cm thick, wherein the surface layer 401 is 4 cm thick, the middle layer 402 is 6 cm thick, and the lower layer 403 is 7 cm thick; the pavement structure base layer 500 is 51 cm thick, and the upper base layer 501, the lower base layer 502, and the bottom base layer 503 are 17 cm thick.

[0018] The transition structure of the connecting section of a mixed traffic intersection for tram traffic is described, wherein a glass fiber geogrid is laid between the surface layer 401 and the middle layer 402 on both sides outside the track; and the fillers of groups A and B are crushed stone and coarse-grained soil.

[0019] The transition structure of the connecting section of the mixed traffic intersection for trams is described, wherein the slope L:h of the base bed side surface 203 is 1:4 to 1:5.

[0020] The construction method of the transition structure of the connecting section of a mixed traffic intersection for tram traffic comprises the following steps:

[0021] (1) Excavate the tram roadbed foundation trench on the original roadbed with a slope of 1:4 to 1:5;

[0022] The width of the foundation trench bottom is 1.9 meters from the center line of the track, the excavation depth is 1.5 meters from the track surface, and the bearing capacity of the soil below the subgrade is not less than 120kPa;

[0023] (2) The base bed is laid in the foundation trench with a thickness of 54 cm and fillers of groups A and B are selected;

[0024] When the fillers in groups A and B are crushed stone and coarse-grained soil, the foundation coefficient should be no less than 150MPa / m and the compaction coefficient should be no less than 0.95;

[0025] (3) Cement-stabilized crushed stone with 5% cement is laid on the subgrade bottom layer within a thickness of 40 cm, ensuring that the foundation coefficient is not less than 190 MPa / m and the compaction coefficient is not less than 0.97;

[0026] (4) Lay a 10cm thick C20 concrete cushion layer and transition section on the upper part of the subgrade surface;

[0027] (5) After the C40 concrete track slab of the roadbed is constructed on the C20 concrete cushion layer;

[0028] (6) A C40 concrete slab with a width of 1.5 meters and a length of 5 meters is cast on the side adjacent to the track slab. Asphalt reinforcement is used to fill the gap between the track slab and the slab. A 17 cm thick lime fly ash stabilized gravel subbase, a 17 cm thick lime fly ash stabilized gravel middle base, and a 17 cm thick lime fly ash stabilized gravel upper base are constructed from the outside of the slab upwards, forming a pavement structure base with a thickness of 51 cm.

[0029] (7) Construct the pavement structure surface layer to strengthen the connection between the pavement structure base layer and the pavement structure surface layer; spray the top surface of the pavement structure base layer with penetration oil, and use a single layer of asphalt surface treatment on the top of the penetration oil. Then, lay a 7cm thick coarse-grained asphalt concrete bottom layer and a 6cm thick medium-grained asphalt concrete middle layer. Before laying the surface layer, lay a 3.0m wide glass fiber geogrid on the top of the middle layer. The end of the glass fiber geogrid spans the end of the trestles by no less than 20cm. Then, lay a 4m thick rubber modified asphalt concrete surface layer to complete the construction of the transition structure of the connecting section.

[0030] Beneficial effects of the present invention:

[0031] The transition structure of the connecting section of the present invention substantially eliminates the problems of longitudinal seams and differential deformation of the connecting section, improves the comfort of lateral vehicle passing, and eliminates defects at the structural connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the transition structure of the present invention,

[0033] Description of the accompanying figures:

[0034] Track bed 100, subgrade 200, subgrade surface layer 201, subgrade bottom layer 202, subgrade side 203, rails 300, pavement structure surface layer 400, surface layer 401, middle surface layer 402, lower layer 403, pavement structure base layer 500, upper base layer 501, lower base layer 502, subbase layer 503, transition section 600, slab 700, plain concrete cushion layer 800, original roadbed 900, connection surface 901, line centerline O, track surface A, fiberglass geogrid S, construction interface Q, DETAILED DESCRIPTION

[0035] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] See also Figure 1 As shown ( Figure 1 Taking the line center line O as the symmetrical center line, the structures on both sides are the same. Figure 1 One side is drawn in the figure, and the other side is omitted and not drawn). This is a transition structure of a junction section for a mixed traffic intersection for tram traffic of the present invention, comprising a tram traffic section at the mixed traffic intersection and an intersection junction section; the tram traffic section comprises, from top to bottom, a pavement layer, a roadbed, a subgrade, and an original roadbed; the intersection junction section comprises, from top to bottom, a pavement structure surface layer, a pavement structure base layer, and an original roadbed;

[0037] The roadbed 100 is a one-piece concrete slab laid under the track at a mixed-traffic intersection. On both sides of the roadbed 100 in the transverse direction of the track, slabs 700 of the same thickness as the roadbed are laid in contact with each other. The slabs 700 are one-piece concrete slabs. A plain concrete cushion layer 800 is laid downward from the bottom of the roadbed 100 and extends transversely along the track to the bottom of the slabs 700 on both sides, reaching half the slab width.

[0038] A base bed 200 is laid downwardly below the plain concrete cushion layer 800, and the transverse cross-section of the base bed is in an inverted trapezoidal shape connected to the original roadbed 900, that is, the bottom ends of the base bed side surfaces 203 at both ends of the base bed are inclined toward the center line O of the railway to form inclined surfaces;

[0039] The intersection connection section is paved with the pavement structure surface layer 400 and the pavement structure base layer 500 in sequence from top to bottom; the pavement layer of the tram passage section is an integrally paved structural surface layer with the pavement structure surface layer 400, the pavement structure base layer 500 is connected to the outer side of the slab 700, and is paved downward along the outer side of the slab 700 to below the plain concrete cushion layer 800, and a transition section 600 is paved between the plain concrete cushion layer 800 and the pavement structure base layer, the transition section 600 is paved downward along the outer side of the plain concrete cushion layer 800 until the bottom is flush with the bottom of the pavement structure base layer 500 to form a connection surface 901 with the original roadbed 900; the inner side of the transition section 600 is integrally connected to the upper part of the connected base bed 200;

[0040] The regular trapezoidal profile surface formed by the connecting surface 901 on both sides of the track and the base bed side surface 203 and below the base bed bottom surface is the original roadbed 900. The regular trapezoidal profile surface here refers to the local regular trapezoidal profile surface formed by the top surface and the side surface.

[0041] The concrete slab is a C40 concrete slab; the plain concrete cushion is a C20 plain concrete.

[0042] The base bed 200 is a two-layer structure of a base bed surface layer 201 and a base bed bottom layer 202 which are laid downward in sequence under the plain concrete cushion layer 800. The base bed surface layer 201 is cement-stabilized gravel, and the base bed bottom layer 202 is group A and B fillers; the bottom of the transition section 600 is higher than the bottom of the base bed surface layer 201; the transition section 600 is cement-stabilized gravel; the bottom surface of the transition section and the bottom surface of the base bed bottom layer 202 are the original roadbed 900.

[0043] The structural surface layer 400 is paved with a surface layer 401, a middle surface layer 402, and a lower layer 403 from top to bottom; wherein the surface layer 401 is rubber-modified asphalt concrete, the middle surface layer 402 is medium-grained asphalt concrete, and the lower layer 403 is coarse-grained asphalt concrete, and the layers are coated with tack coat oil (traditional material with existing technology) to combine them into one.

[0044] The pavement structure base 500 is paved with three layers from top to bottom: an upper base 501 , a lower base 502 , and a subbase 503 , each layer being lime fly ash stabilized gravel; the bottom surface of the subbase 503 is the original roadbed 900 .

[0045] Preferably, the tread 700 is 5.0 m long along the track and is the same length as the roadbed 100, and is 1.5 m wide along the track; the plain concrete cushion layer 800 is 10 cm thick; the base bed surface layer 201 is 400 mm thick, and the base bed bottom layer 202 is 540 mm thick; the pavement structure surface layer 400 is 17 cm thick, wherein the surface layer 401 is 4 cm thick, the middle layer 402 is 6 cm thick, and the lower layer 403 is 7 cm thick; the pavement structure base layer 500 is 51 cm thick, wherein the upper base layer 501 is 17 cm thick, the lower base layer 502 is 17 cm thick, and the bottom base layer 503 is 17 cm thick.

[0046] Fiberglass geogrids are laid between the surface layer 401 and the middle layer 402 on both sides outside the track; preferably, the fillers of groups A and B are crushed stone and coarse-grained soil.

[0047] The slope L:h of the base bed side surface 203 is 1:4 to 1:5.

[0048] The connection method between the track bed 100 and the rail 300 is a conventional method in the prior art and will not be described in detail.

[0049] The design principle of this invention is that the differences in vehicle loads and supporting structure between tram and road traffic modes lead to differential deformation between the two structures at mixed-traffic intersections, resulting in continuous shear joints. This not only affects the structural aesthetics but also causes vehicles to jump at the intersection, affecting the comfort of vehicles crossing the intersection. Over time, the junction section of mixed-traffic intersections is prone to disease, often failing to reach its design lifespan and requiring road renovation. The present invention adjusts the stiffness of the junction section of the mixed-traffic intersection to form a transition structure for the junction section of the mixed-traffic intersection. This transition structure can achieve a uniform stiffness transition between the tram structure and the road structure, preventing shear damage to the pavement material due to structural settlement differences.

[0050] Example 1

[0051] The construction steps of the present invention are as follows:

[0052] (1) Excavate the tram roadbed foundation trench on the original roadbed using a slope excavation method with a slope ratio L:h of 1:4 to 1:5;

[0053] The width of the bottom of the foundation trench is 1.9 meters from the center line of the line. Figure 1 The excavation depth is 1.5 meters from the rail surface, and the bearing capacity of the soil below the base bed is not less than 120kPa, otherwise replacement and filling treatment shall be performed.

[0054] (2) The base bed is laid in the foundation trench with a thickness of 54 cm and fillers of groups A and B are selected;

[0055] When the fillers in groups A and B are crushed stone and coarse-grained soil, the foundation coefficient must be no less than 150MPa / m and the compaction coefficient must be no less than 0.95.

[0056] (3) Cement-stabilized gravel is used to fill the surface layer of the base bed within a thickness of 40 cm on the base bed bottom layer to ensure that the foundation coefficient is not less than 190 MPa / m and the compaction coefficient is not less than 0.97.

[0057] (4) Lay a 10cm thick C20 concrete cushion layer and transition section on the upper part of the base surface.

[0058] (5) After the C40 concrete track slab of the roadbed is constructed on the C20 concrete cushion layer;

[0059] (6) A C40 concrete slab with a width of 1.5 meters and a length of 5 meters is cast on the side adjacent to the track slab. Asphalt reinforcement is used to fill the gap between the track slab and the slab. A 17 cm thick lime fly ash stabilized gravel subbase, a 17 cm thick lime fly ash stabilized gravel middle base, and a 17 cm thick lime fly ash stabilized gravel upper base are constructed from the outside of the slab upwards, forming a pavement structure base with a thickness of 51 cm.

[0060] (7) Construct the pavement structure surface layer to strengthen the connection between the pavement structure base layer and the pavement structure surface layer; spray the top surface of the pavement structure base layer with penetration oil, and use a single layer of asphalt surface treatment on the top of the penetration oil. Then, lay a 7cm thick coarse-grained asphalt concrete bottom layer and a 6cm thick medium-grained asphalt concrete middle layer. Before laying the surface layer, lay a 3.0m wide glass fiber geogrid on the top of the middle layer. The end of the glass fiber geogrid spans the end of the trestles by no less than 20cm. Then, lay a 4m thick rubber modified asphalt concrete surface layer to complete the construction of the transition structure of the connecting section.

Claims

1. A transition structure for a mixed-traffic intersection, comprising a tram-traffic section and an intersection transition section at the mixed-traffic intersection; the tram-traffic section comprises, from top to bottom, a pavement layer, a roadbed, a subgrade, and an original roadbed; the intersection transition section comprises, from top to bottom, a pavement structure surface layer, a pavement structure base layer, and an original roadbed; characterized in that: The roadbed (100) is a concrete slab of an integral structure laid under the track at a mixed traffic intersection; on both sides of the roadbed (100) in the transverse direction of the track, slabs (700) of the same thickness as the roadbed are laid in contact with each other, and the slabs (700) are concrete slabs of an integral structure; a plain concrete cushion layer (800) is laid downwardly from the bottom of the roadbed (100) and extends transversely along the track to the bottom of the slabs (700) on both sides and reaches a position half the width of the slabs; A base bed (200) is laid downwardly below the plain concrete cushion layer (800), wherein the transverse cross section of the base bed is in an inverted trapezoidal shape and is connected to the original roadbed (900), that is, the bottom ends of the base bed side surfaces (203) at both ends of the base bed are inclined toward the center line (O) of the line; The road junction section is paved with the pavement structure surface layer (400) and the pavement structure base layer (500) in sequence from top to bottom; the pavement layer of the tram passage section and the pavement structure surface layer (400) are formed as a structural surface layer paved integrally; the pavement structure base layer (500) is connected to the outer side surface of the slab (700) and is paved downward along the outer side surface of the slab (700) to below the plain concrete cushion layer (800); and a transition section (600) is paved between the plain concrete cushion layer (800) and the pavement structure base layer; the transition section (600) is paved downward along the outer side surface of the plain concrete cushion layer (800) until the bottom is flush with the bottom of the pavement structure base layer (500) to form a connection surface (901) with the original roadbed (900); the inner side of the transition section (600) is connected to the upper part of the connected base bed (200) as a whole; The original roadbed (900) is located below the regular trapezoidal contour surface formed by the connecting surfaces (901) on both sides of the track and the side surface (203) of the base bed and the bottom surface of the base bed.

2. A connecting section transition structure for a mixed traffic intersection with trams as claimed in claim 1, characterized in that: The concrete slab is a C40 concrete slab; the plain concrete cushion is a C20 plain concrete.

3. The connecting section transition structure for a mixed traffic intersection for trams as claimed in claim 2, characterized in that: The base bed (200) is a two-layer structure of a base bed surface layer (201) and a base bed bottom layer (202) which are laid downward in sequence below the plain concrete cushion layer (800), wherein the base bed surface layer (201) is cement-stabilized gravel, and the base bed bottom layer (202) is group A and group B fillers; the bottom of the transition section (600) is higher than the bottom of the base bed surface layer (201); the transition section (600) is cement-stabilized gravel; the bottom surface of the transition section and the bottom surface of the base bed bottom layer (202) are the original roadbed (900).

4. A connecting section transition structure for a mixed traffic intersection with trams as claimed in claim 3, characterized in that: The structural surface layer (400) is paved with a surface layer (401), a middle surface layer (402), and a lower layer (403) in sequence from top to bottom; wherein the surface layer (401) is rubber-modified asphalt concrete, the middle surface layer (402) is medium-grained asphalt concrete, and the lower layer (403) is coarse-grained asphalt concrete, and the layers are coated with tack coat oil to form a whole.

5. The connecting section transition structure for a mixed traffic intersection for trams as claimed in claim 4, characterized in that: The pavement structure base (500) is paved with three layers of upper base (501), lower base (502) and subbase (503) from top to bottom, each layer being lime fly ash stabilized gravel; the bottom surface of the subbase (503) is the original roadbed (900).

6. A connecting section transition structure for a mixed traffic intersection with trams as claimed in claim 5, characterized in that: The tread (700) is 5.0 m long along the track and is the same length as the track bed (100), and is 1.5 m wide in the horizontal direction along the track; the plain concrete cushion layer (800) is 10 cm thick; the base bed surface layer (201) is 400 mm thick, and the base bed bottom layer (202) is 540 mm thick; the pavement structure surface layer (400) is 17 cm thick, wherein the surface layer (401) is 4 cm thick, the middle layer (402) is 6 cm thick, and the lower layer (403) is 7 cm thick; the pavement structure base layer (500) is 51 cm thick, wherein the upper base layer (501) is 17 cm thick, the lower base layer (502) is 17 cm thick, and the bottom base layer (503) is 17 cm thick.

7. A connecting section transition structure for a mixed traffic intersection with trams as claimed in claim 6, characterized in that: Glass fiber geogrids are laid between the surface layer (401) and the middle surface layer (402) on both sides outside the track; the fillers of groups A and B are crushed stone and coarse-grained soil.

8. The connecting section transition structure for a mixed traffic intersection with trams as claimed in claim 7, characterized in that: The slope L:h of the base bed side surface (203) is 1:4 to 1:

5.

9. The construction method of a connecting section transition structure for a mixed traffic intersection for trams according to claim 1, characterized in that: The following steps are involved: (1) Excavate the tram roadbed foundation trench on the original roadbed with a slope of 1:4 to 1:5; The width of the foundation trench bottom is 1.9 meters from the center line of the track, the excavation depth is 1.5 meters from the track surface, and the bearing capacity of the soil below the subgrade is not less than 120kPa; (2) The base bed is laid in the foundation trench with a thickness of 54 cm and fillers of groups A and B are selected; When the fillers in groups A and B are crushed stone and coarse-grained soil, the foundation coefficient shall not be less than 150MPa / m, and the compaction coefficient shall not be less than 0.95; (3) Cement-stabilized gravel filling is laid on the base bed bottom layer within a thickness of 40 cm on the base bed surface. The cement content of the cement-stabilized gravel filling is 5%, the foundation coefficient is not less than 190 MPa / m, and the compaction coefficient is not less than 0.97; (4) Lay a 10cm thick C20 concrete cushion layer and transition section on the upper part of the subgrade surface; (5) After the C40 concrete track slab of the roadbed is constructed on the C20 concrete cushion layer; (6) A C40 concrete slab with a width of 1.5 meters and a length of 5 meters is cast on the side adjacent to the track slab. Asphalt reinforcement is used to fill the gap between the track slab and the slab. A 17 cm thick lime fly ash stabilized gravel subbase, a 17 cm thick lime fly ash stabilized gravel middle base, and a 17 cm thick lime fly ash stabilized gravel upper base are constructed from the outside of the slab upwards, forming a pavement structure base with a thickness of 51 cm. (7) Construct the pavement structure surface layer to strengthen the connection between the pavement structure base layer and the pavement structure surface layer; spray the top surface of the pavement structure base layer with penetration oil, and use a single layer of asphalt surface treatment on the top of the penetration oil. Then, lay a 7cm thick coarse-grained asphalt concrete bottom layer and a 6cm thick medium-grained asphalt concrete middle layer. Before laying the surface layer, lay a 3.0m wide glass fiber geogrid on the top of the middle layer. The end of the glass fiber geogrid spans the end of the trestles by no less than 20cm. Then, lay a 4m thick rubber modified asphalt concrete surface layer to complete the construction of the transition structure of the connecting section.

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