阅读说明：本技术 一种现浇预应力混凝土路面结构及其施工方法 (Cast-in-place prestressed concrete pavement structure and construction method thereof ) 是由 肖俊华 程小亮 刘宇闻 万家恺 于 2021-08-12 设计创作，主要内容包括：本发明公开了现浇预应力混凝土路面结构,包括均铺设在路基上的车道先浇带、路缘后浇带和车道间后浇带,所述车道先浇带包括沿路面结构间隔布置的横向钢筋和纵向钢筋,以及将各钢筋浇筑连接于一体的混凝土板；所述横向的端部插入路缘后浇带或车道间后浇带内,横向钢筋位于车道先浇带的部分施加有预应力,横向钢筋位于路缘后浇带和车道间后浇带内的部分不施加预应力。本发明还公开了一种预应力混凝土路面结构施工方法。本发明的有益效果为：本发明采用预应力钢筋混凝土,利用了车道正下方预应力混凝土较大的刚度和抗裂能力,可防止路面开裂,提高路面使用寿命。(The invention discloses a cast-in-place prestressed concrete pavement structure, which comprises a lane pre-cast strip, a curb post-cast strip and an inter-lane post-cast strip which are all laid on a roadbed, wherein the lane pre-cast strip comprises transverse reinforcing steel bars and longitudinal reinforcing steel bars which are arranged at intervals along the pavement structure, and the reinforcing steel bars are cast and connected into an integrated concrete slab; the transverse end part is inserted into the curb post-cast strip or the post-cast strip between lanes, the part of the transverse steel bar positioned in the lane pre-cast strip is prestressed, and the part of the transverse steel bar positioned in the curb post-cast strip and the post-cast strip between lanes is not prestressed. The invention also discloses a construction method of the prestressed concrete pavement structure. The invention has the beneficial effects that: the invention adopts prestressed reinforced concrete, utilizes the larger rigidity and crack resistance of the prestressed concrete right below the lane, can prevent the pavement from cracking and prolong the service life of the pavement.)

1. A cast-in-place prestressed concrete pavement structure is characterized by comprising a lane first-pouring belt, a curb second-pouring belt and an inter-lane second-pouring belt which are all laid on a roadbed, wherein the curb second-pouring belt is positioned on the side part of the lane first-pouring belt, the inter-lane second-pouring belt is positioned on an inter-lane dividing line of the whole pavement structure, and both sides of the inter-lane second-pouring belt are lane first-pouring belts; the lane cast-in-place strip comprises transverse steel bars and longitudinal steel bars which are arranged at intervals along a pavement structure, and the steel bars are connected with an integrated concrete slab in a pouring way; the end parts of the transverse steel bars are inserted into the curb post-cast strip or the inter-lane post-cast strip, and prestress is applied to the parts of the transverse steel bars, which are positioned in the lane pre-cast strip.

2. The pavement structure of claim 1 wherein the curb post-cast strip and the inter-lane post-cast strip are each cast of ECC concrete.

3. The pavement structure according to claim 1, wherein the transverse reinforcing bars are fitted in corrugated pipes arranged along the width direction of the lane pre-cast strip, and end portions of the transverse reinforcing bars extend from the corrugated pipes; and grouting the gap between the corrugated pipe and the transverse steel bar.

4. A pavement structure according to claim 1, characterized in that the transverse reinforcement of the pre-cast strip of adjacent lanes is positioned correspondingly and end-connected.

5. A construction method of a cast-in-situ prestressed concrete pavement structure is characterized by comprising the following steps:

step one, leveling and rolling a roadbed;

step two, binding longitudinal and transverse steel bars, erecting a lane first-pouring belt template, and pouring and maintaining the lane first-pouring belt concrete;

thirdly, removing a lane first-poured strip template, tensioning the transverse steel bars by using a jack device, and grouting the inner pore of the corrugated pipe;

step four, maintaining the grouting material, and dismantling the jack device;

welding transverse steel bars at the same transverse position of the first-poured strip of each lane, pouring and maintaining a curb post-poured strip and an inter-lane post-poured strip, and connecting the first-poured strips of each workshop lane into a whole;

and step six, paving a pavement layer.

6. The construction method according to claim 5, wherein in the second step, after the transverse reinforcing bars are arranged, the ends of the corrugated pipes are filled with sponge or rubber plugs to prevent the corrugated pipes from being blocked during the concrete pouring.

7. The construction method as claimed in claim 5, wherein the concrete method of the third step is:

1) cleaning a rubber plug or a sponge block used for sealing at the end part of the corrugated pipe to ensure that the transverse steel bar can freely slide in the corrugated steel pore channel;

2) cleaning the roots of the transverse steel bars and concrete around the end parts of the corrugated pipes, and polishing and flattening;

3) adjusting the position of the transverse steel bar, wherein the overlapping length of the transverse steel bars at the same transverse position of adjacent lanes is 20-25 cm;

4) arranging a jack device to stretch the transverse steel bar so that the stretching stress of the transverse steel bar reaches the design requirement;

5) and grouting the corrugated pipe, wherein grouting is started from one end of the corrugated pipe until grouting material flows out from the other end of the corrugated pipe and has no bubbles.

8. The construction method according to claim 5, wherein the jack device comprises a support mat, a hollow jack and an anchor head structure; the support base plate is tightly attached to the side part of the concrete slab of the roadway firstly-poured belt, and is provided with a through hole and a grouting hole for corrugated pipe grouting; the jack is arranged on the support base plate, and the telescopic direction of the jack is consistent with the axial direction of the transverse steel bar; the end part of the transverse steel bar nested in the corrugated pipe extends out of the through hole and is connected with the driving end of the jack through the anchor head structure, and the stretching of the transverse steel bar is realized when the driving end of the jack stretches.

9. The construction method according to claim 8, wherein the jack comprises a hydraulic cylinder, a hydraulic rod and a limiting plate, the bottom of the hydraulic cylinder is fixed on the support base plate, and the hydraulic cylinder is provided with an oil cavity and an oil filling hole communicated with the oil cavity; the hydraulic rod is hollow, and the transverse steel bar penetrates through the hydraulic rod; one end of the hydraulic rod is hermetically connected in the oil cavity, and the hydraulic rod can slide along the inner wall of the oil cavity; the other end of the hydraulic rod is connected with the transverse steel bar through an anchor head structure; a limiting plate for limiting the hydraulic rod to slide out is arranged on the outer side of the oil cavity, and the limiting plate is connected with the hydraulic cylinder through a bolt; the anchor head clamping piece is arranged in the anchor head clamping ring and used for clamping the transverse steel bar; the inner side surface of the anchor head snap ring is connected with the outer end part of the hydraulic rod.

10. The construction method according to claim 7, wherein the tension control stress of the transverse steel bar is 250 to 320 MPa.

Technical Field

The invention relates to a pavement construction technology, in particular to a cast-in-place prestressed concrete pavement structure and a construction method thereof.

Background

Improving the service life of pavements is a long-term pursuit of the road traffic industry. However, because concrete has the material characteristics of strong compressive capacity and poor tensile capacity, the concrete pavement is easy to crack under the conditions of temperature and wheel load. When the concrete pavement cracks, rainwater on the pavement surface can invade the interior of the pavement along the cracks, so that the reinforcing steel bars are corroded, the roadbed is softened and damaged, and the pavement further cracks.

In order to avoid the problems, the traditional treatment method mainly has two aspects, namely, the reinforcement ratio of the concrete pavement is increased, for example, a double-layer reinforcement concrete pavement structure is adopted; and secondly, the thickness of the roadbed and the roadbed poured by concrete are increased so as to improve the quality of the roadbed. Although the traditional method reduces the generation of cracks on the concrete pavement to a certain extent and prolongs the service life of the pavement, the economic cost is extremely high, and the method is difficult to widely popularize and popularize except a few main roads.

Disclosure of Invention

The invention aims to provide a cast-in-place prestressed concrete pavement structure capable of reducing pavement cracking and prolonging the service life of a road and a construction method thereof, aiming at the defects of the prior art.

The technical scheme adopted by the invention is as follows: a cast-in-place prestressed concrete pavement structure comprises a lane first-pouring belt, a curb second-pouring belt and an inter-lane second-pouring belt which are all laid on a roadbed, wherein the curb second-pouring belt is positioned on the side part of the lane first-pouring belt, the inter-lane second-pouring belt is positioned on an inter-lane dividing line of the whole pavement structure, and both sides of the inter-lane second-pouring belt are lane first-pouring belts; the lane cast-in-place strip comprises transverse steel bars and longitudinal steel bars which are arranged at intervals along a pavement structure, and the steel bars are connected with an integrated concrete slab in a pouring way; the end parts of the transverse steel bars are inserted into the curb post-cast strip or the inter-lane post-cast strip, and prestress is applied to the parts of the transverse steel bars, which are positioned in the lane pre-cast strip.

According to the scheme, the curb post-cast strip and the post-cast strip between lanes are respectively cast by ECC concrete.

According to the scheme, the transverse steel bars are sleeved in the corrugated pipes, the corrugated pipes are arranged in the length direction along the width direction of the lane cast-in-place strip, and the end parts of the transverse steel bars extend out of the corrugated pipes; and grouting the gap between the corrugated pipe and the transverse steel bar.

According to the scheme, the transverse steel bars of the first-poured strips of the adjacent lanes correspond in position and are connected at the end parts.

The invention also provides a construction method of the cast-in-place prestressed concrete pavement structure, which comprises the following steps:

step one, leveling and rolling a roadbed;

step two, binding longitudinal and transverse steel bars, erecting a lane first-pouring belt template, and pouring and maintaining the lane first-pouring belt concrete;

thirdly, removing a lane first-poured strip template, tensioning the transverse steel bars by using a jack device, and grouting the inner pore of the corrugated pipe;

step four, maintaining the grouting material, and dismantling the jack device;

welding transverse steel bars at the same transverse position of the first-poured strip of each lane, pouring and maintaining a curb post-poured strip and an inter-lane post-poured strip, and connecting the first-poured strips of each workshop lane into a whole;

and step six, paving a pavement layer.

According to above-mentioned scheme, in step two, after the transverse reinforcement arranges the completion, adopt sponge or rubber buffer to fill corrugated pipe tip, block up the bellows when preventing concrete placement.

According to the scheme, the specific method of the step three comprises the following steps:

1) cleaning a rubber plug or a sponge block used for sealing at the end part of the corrugated pipe to ensure that the transverse steel bar can freely slide in the corrugated steel pore channel;

2) cleaning the roots of the transverse steel bars and concrete around the end parts of the corrugated pipes, and polishing and flattening;

3) adjusting the position of the transverse steel bar, wherein the overlapping length of the transverse steel bars at the same transverse position of adjacent lanes is 20-25 cm;

4) arranging a jack device to stretch the transverse steel bar so that the stretching stress of the transverse steel bar reaches the design requirement;

5) and grouting the corrugated pipe, wherein grouting is started from one end of the corrugated pipe until grouting material flows out from the other end of the corrugated pipe and has no bubbles.

According to the scheme, the jack device comprises a supporting base plate, a hollow jack and an anchor head structure; the support base plate is tightly attached to the side part of the concrete slab of the roadway firstly-poured belt, and is provided with a through hole and a grouting hole for corrugated pipe grouting; the jack is arranged on the support base plate, and the telescopic direction of the jack is consistent with the axial direction of the transverse steel bar; the end part of the transverse steel bar nested in the corrugated pipe extends out of the through hole and is connected with the driving end of the jack through the anchor head structure, and the stretching of the transverse steel bar is realized when the driving end of the jack stretches.

According to the scheme, the jack comprises a hydraulic cylinder, a hydraulic rod and a limiting plate, the bottom of the hydraulic cylinder is fixed on the supporting base plate, and the hydraulic cylinder is provided with an oil cavity and an oil filler hole communicated with the oil cavity; the hydraulic rod is hollow, and the transverse steel bar penetrates through the hydraulic rod; one end of the hydraulic rod is hermetically connected in the oil cavity, and the hydraulic rod can slide along the inner wall of the oil cavity; the other end of the hydraulic rod is connected with the transverse steel bar through an anchor head structure; a limiting plate for limiting the hydraulic rod to slide out is arranged on the outer side of the oil cavity, and the limiting plate is connected with the hydraulic cylinder through a bolt; the anchor head clamping piece is arranged in the anchor head clamping ring and used for clamping the transverse steel bar; the inner side surface of the anchor head snap ring is connected with the outer end part of the hydraulic rod.

According to the scheme, the tension control stress of the transverse steel bar is 250-320 Mpa.

The invention has the beneficial effects that:

1. the road surface stress is more reasonable: the pavement structure of the invention is composed of prestressed concrete pre-cast strips and common reinforced concrete post-cast strips in an alternating manner. Compared with a common reinforced concrete structure, the prestressed concrete slab positioned below the wheel track belt has the characteristics of stronger crack resistance and bearing capacity; compared with a full-section prestressed concrete structure, the prestressed concrete structure has simpler prestressed construction, and simultaneously, as the prestress is distributed according to the lanes, the prestress loss caused by ground friction is smaller, and the structural stress is more reasonable.

2. The rigidity and flexibility are combined, the stress on the road surface is better: according to the invention, the prestressed reinforced concrete and the ECC concrete are alternately used, so that on one hand, the higher rigidity and the crack resistance of the prestressed concrete right below the lane are utilized, and meanwhile, the ECC concrete is used as a post-cast strip to prevent the crack of the pavement of the post-cast strip due to the good deformation capability (the ultimate strain is 200-300 times of the concrete), so that the pavement has good deformation and crack resistance.

3. The road surface is closely contacted with the ground substrate, and the phenomenon of void is avoided: the cast-in-place prestressed concrete slab is in close contact with the road surface, has no phenomenon of void, can uniformly transmit the wheel load to the foundation in service, and prolongs the service life of the road surface.

4. The road slab has stronger load bearing capacity: due to the action of the prestress, the concrete is in a transverse compression state, and compared with a non-prestressed concrete pavement, the anti-shearing capacity of the concrete is stronger, so that the concrete can bear larger load.

5. Stronger waterproof capability and better durability: because the concrete is in an initial pressed state, even if cracks appear under the action of load in the service process, the concrete can be closed quickly under the action of load, so that rainwater is prevented from flowing into the cracks to cause corrosion of reinforcing steel bars and softening of foundations, and the pavement provided by the invention has longer service life and better durability.

6. The construction is simple, easily operation: compared with the traditional cast-in-place pavement construction process, the construction process has the main difficulty of stretching the transverse steel bars, and is less in construction difficulty and easy to construct on site by matching with the hollow stretching jack.

7. The manufacturing cost is lower: compared with the traditional concrete pavement, the prestressed reinforcement tensioning construction cost is increased, but the prestressed reinforcement tensioning construction cost is reduced to a certain extent compared with the common reinforced concrete pavement structure due to the adoption of the prestressed structure, and meanwhile, the thickness of the concrete slab can be reduced under the same condition, so that the consumption of the concrete is saved, and the comprehensive cost is basically equal to or lower than that of the traditional reinforced concrete pavement structure.

Drawings

FIG. 1 is a plan view of the structure of an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of the road surface tension in this embodiment.

Fig. 3 is a partial schematic view of a tendon tension in this embodiment.

Fig. 4 is a first structural view of the jack device in this embodiment.

Fig. 5 is a second structural view of the jack device in this embodiment.

Fig. 6 is a schematic cross-sectional view of the final road surface in this embodiment.

Wherein: the method comprises the following steps of 1-lane first pouring zone, 2-transverse steel bar, 21-corrugated pipe, 22-transverse steel bar overlapping section, 23-transverse steel bar extending section, 3-longitudinal steel bar, 4-curb later pouring zone, 5-inter-lane later pouring zone, 6-roadbed, 7-anchor head structure, 71-anchor head clamping piece, 72-anchor head clamping ring, 8-jack, 81-hydraulic rod, 82-hydraulic cylinder, 83-oil injection hole, 84-hydraulic oil, 85-sealing ring, 86-limiting plate, 87-bolt, 9-supporting cushion plate, 91-grouting hole and 92-rubber plug.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

The cast-in-place prestressed concrete pavement structure shown in fig. 1 comprises a lane first-pouring strip 1, a curb second-pouring strip 4 and an inter-lane second-pouring strip 5 which are respectively paved on a roadbed 6, wherein the curb second-pouring strip 4 is positioned on the side part of the lane first-pouring strip 1, the inter-lane second-pouring strip 5 is positioned on an inter-lane dividing line of the whole pavement structure, and both sides of the inter-lane second-pouring strip 5 are the lane first-pouring strips 1; the lane pre-cast strip 1 comprises transverse steel bars 2 and longitudinal steel bars which are arranged at intervals along a pavement structure, and concrete slabs which are integrally connected with the steel bars in a pouring manner; the end parts of the transverse steel bars 2 are inserted into the curb post-cast strip 4 or the inter-lane post-cast strip 5, the parts of the transverse steel bars 2, which are positioned in the lane pre-cast strip 1, are prestressed, and the parts of the transverse steel bars 2, which are positioned in the curb post-cast strip 4 and the inter-lane post-cast strip 5, are not prestressed. In this embodiment, the concrete slab is a prestressed concrete slab because the transverse reinforcing steel bars 2 are prestressed.

Preferably, the curb post-cast strip 4 and the inter-lane post-cast strip 5 are both respectively cast by using ECC concrete (Engineered cement Composite, fiber reinforced cement-based Composite), and the ECC concrete has high deformability.

Preferably, the transverse steel bars 2 are sleeved in the corrugated pipe 21, the corrugated pipe 21 is arranged along the width direction of the lane precast strip 1 in a full-length mode, and the end portions of the transverse steel bars 2 extend out of the corrugated pipe 21; the gap between the corrugated tube 21 and the transverse reinforcing steel bar 2 is grouted.

Preferably, the transverse steel bars 2 of the pre-cast strips 1 of the adjacent lanes correspond in position and are connected at the ends.

In the invention, the transverse steel bar 2 is a twisted steel bar.

As shown in fig. 2, the construction method of the cast-in-place pavement concrete pavement structure comprises the following steps:

step one, leveling and rolling the roadbed 6: and leveling and compacting the roadbed 6 according to the design requirement, so that the elevation and the compaction degree of the roadbed 6 reach the design requirement.

And step two, binding longitudinal steel bars and transverse steel bars 2, erecting a template of the lane first-pouring belt 1, and pouring and maintaining concrete of the lane first-pouring belt 1. The width of the lane first-poured strip 1 is 3.2-3.6 m, and the width of the lane first-poured strip 1 in the embodiment is specifically 3.5 m. When the transverse steel bars 2 are erected, the positions of the transverse steel bars 2 positioned on different lanes correspond to each other so as to connect the transverse steel bars 2 of different lanes together; meanwhile, after the transverse steel bars 2 are arranged, sponge or rubber plugs are adopted to fill gaps between the transverse steel bars 2 and the corrugated pipes 21 at the end parts of the corrugated pipes 21, so that the corrugated pipes 21 are prevented from being blocked when concrete is poured.

The arrangement parameters of the longitudinal steel bars and the transverse steel bars 2 are as follows: the longitudinal steel bars are continuously arranged at intervals along the length direction of the pavement structure, and the distance is 15-30 cm; the distance between the longitudinal steel bars in the embodiment is 20 cm. The longitudinal steel bars are arranged on the central plane of the thickness of the concrete slab of the lane pre-cast strip 1, and the longitudinal steel bars are erected on the transverse steel bars 2. The arrangement distance of the transverse steel bars 2 is 10-20 cm, and in the embodiment, the arrangement distance is 20 cm; two ends of the transverse steel bar 2 respectively penetrate out of the corrugated pipes 2120-30 cm, in the embodiment, 30 cm; the transverse reinforcing steel bars 2 are nested in the corrugated pipes 21, and the length of the corrugated pipes 21 is equal to the width of the precast concrete slab.

And step three, removing the template of the lane first-poured strip 1, tensioning the transverse steel bar 2 by using a jack device, and grouting the inner pore of the corrugated pipe 21.

In the invention, the third step mainly involves the tensioning of the transverse steel bar 2, as shown in fig. 3 to 5, the main construction process and parameters are set as follows:

1) the end part of the cleaning corrugated pipe 21 is used for sealing the rubber plug or the sponge block, so that the transverse steel bar 2 can freely slide in the corrugated steel hole channel, and the subsequent stretching of the transverse steel bar 2 is facilitated.

2) The root of the transverse steel bar 2 and the concrete around the end part of the corrugated pipe 21 are cleaned, and the concrete is polished to be smooth, so that the jack device is convenient to arrange.

3) Adjusting the position of the transverse steel bar 2, wherein the overlapping length of the transverse steel bars 2 at the same transverse position of adjacent lanes is 20-25 cm, preferably 20 cm; for the curb-side lateral reinforcing bars 2, the end portions thereof (i.e., the overhanging sections 23) are extended by 30 cm.

4) And arranging a jack device to stretch the transverse steel bar 2 so that the stretching stress of the transverse steel bar reaches the stretching control stress range. In the invention, the tension control stress of the transverse steel bar 2 is 250-320 Mpa.

5) And grouting the corrugated pipe 21, and plugging the grouting hole after grouting is finished. Grouting is started from one end of the corrugated pipe 21 until the grouting material flows out from the other end without air bubbles.

In the invention, the adopted grouting material is quick-setting high-strength mortar, the setting time is less than 48 hours, and the effect is mainly three, namely, the prestress of the transverse steel bar 2 is transferred to the concrete of the pre-cast strip after the jack device is unloaded; secondly, the transverse steel bar 2 is protected, and the loss of prestress caused by corrosion of the transverse steel bar 2 is prevented; thirdly, the construction progress is accelerated by adopting quick-setting mortar.

In the invention, the jack device comprises a supporting base plate 9, a hollow jack 8 and an anchor head structure 7; the support backing plate 9 is tightly attached to the side part of the concrete slab of the lane pre-cast strip 1, and a through hole is formed in the center of the support backing plate 9; the jack 8 is arranged on the supporting base plate 9, and the telescopic direction of the jack 8 is consistent with the axial direction of the transverse steel bar 2; the end part of the transverse steel bar 2 nested in the corrugated pipe 21 extends out of the through hole and is connected with the driving end of the jack 8 through the anchor head structure 7, and the stretching of the transverse steel bar 2 is realized when the driving end of the jack 8 stretches. In this embodiment, the rubber plug 92 is filled in the gap between the transverse steel bar 2 and the through hole; the support backing plate 9 is provided with a grouting hole 91 for grouting the corrugated pipe 21.

Preferably, the jack 8 comprises a hydraulic cylinder 82, a hydraulic rod 81 and a limit plate 86, the bottom of the hydraulic cylinder 82 is fixed on the support cushion plate 9, and the hydraulic cylinder 82 is provided with an oil cavity and an oil filling hole 83 communicated with the oil cavity; the hydraulic rod 81 is hollow, and the transverse steel bar 2 penetrates through the hydraulic rod 81; one end of the hydraulic rod 81 is hermetically connected in the oil cavity (the hydraulic rod 81 and the inner wall of the oil cavity are sealed through a sealing ring 85), and the hydraulic rod 81 can slide along the inner wall of the oil cavity; the other end of the hydraulic rod 81 is connected with the transverse reinforcing steel bar 2 through an anchor head structure 7. And a limiting plate 86 for limiting the hydraulic rod 81 to slide out is arranged on the outer side of the oil cavity, and the limiting plate 86 is connected with the hydraulic cylinder 82 through a bolt 87.

Preferably, the anchor head structure 7 comprises an anchor head clamping ring 72 and a plurality of anchor head clamping pieces 71, and the anchor head clamping pieces 71 are arranged in the anchor head clamping ring 72 and used for clamping the transverse steel bars 2; the inner side surface of the anchor head snap ring 72 is connected with the outer end part of the hydraulic rod 81.

The jack device has the working principle that: when hydraulic oil 84 is injected into or extracted from the oil cavity, the pressure in the oil cavity changes to drive the hydraulic rod 81 to move, and the anchor head structure 7 connected with the hydraulic rod 81 drives the transverse steel bar 2 to move so as to realize tensioning.

And step four, maintaining the grouting material and dismantling the jack device. The jack device dismantling process is as follows:

1) the jack 8 is decompressed and retracted, and the anchor head and the jack 8 are sequentially dismantled;

2) and removing the backing plate and the rubber block, and preliminarily cleaning the side surface of the concrete slab of the lane initial pouring belt 1.

And step five, welding the transverse steel bars 2 at the same transverse position of the first-cast strip 1 of each lane, pouring and maintaining a curb post-cast strip 4 and an inter-lane post-cast strip 5, and connecting the first-cast strips of the inter-lane into a whole as shown in fig. 6. The specific construction method comprises the following steps:

1) performing chiseling treatment on the side surface of the concrete slab of the lane initial pouring belt 1;

2) welding the exposed transverse steel bars 2 of the first casting belts 1 of the adjacent lanes;

3) the ECC concrete is adopted to cast the post-cast strip 4 on the road edge and the post-cast strip 5 between the lanes, wherein the width of the post-cast strip 5 between the lanes is 30-40 cm, and 40cm is adopted in the embodiment; the width of the curb post-cast strip 4 is 20-30 cm, and in the embodiment, is 30 cm.

And step six, paving a pavement layer.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.