CN113062164A - Double-layer composite full-prefabricated assembly type pavement and construction method - Google Patents
Double-layer composite full-prefabricated assembly type pavement and construction method Download PDFInfo
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- CN113062164A CN113062164A CN202110243174.0A CN202110243174A CN113062164A CN 113062164 A CN113062164 A CN 113062164A CN 202110243174 A CN202110243174 A CN 202110243174A CN 113062164 A CN113062164 A CN 113062164A
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- 238000010276 construction Methods 0.000 title claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 71
- 239000010426 asphalt Substances 0.000 claims abstract description 67
- 239000010410 layer Substances 0.000 claims abstract description 53
- 238000011049 filling Methods 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 26
- 239000002344 surface layer Substances 0.000 claims abstract description 22
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
A double-layer composite full-prefabricated assembly type pavement and a construction method thereof comprise a double-layer composite prefabricated pavement slab, a prefabricated asphalt filling block and a prefabricated concrete filling block, wherein the upper layer of the pavement slab is a prefabricated asphalt surface layer, the lower layer of the pavement slab is a prefabricated concrete base, and the concrete base is prefabricated into a rigid or flexible concrete base so as to be suitable for a straight line flat road section or a longitudinal and transverse slope road section; the edge both sides of pavement slab reserve to have a plurality ofly by the downward reservation hole of seting up to the concrete foundation of pitch surface course, pitch filling block and concrete filling block and reservation hole phase-match, dispose the reinforcing bar net in the pavement slab, the main atress muscle of reinforcing bar net extends to in the reservation hole and makes the pavement slab splice each other as the dowel bar, dual waterproof processing is done to the seam crossing that the pavement slab spliced. The invention solves the problem of joint bonding of road deck assembly, realizes the prefabrication of asphalt pavements, and is a new road construction mode.
Description
Technical Field
The invention relates to the technical field of assembled pavements, in particular to a double-layer composite full-prefabricated assembled pavement and a construction method.
Background
The fabricated pavement has the advantages of environmental protection, high construction efficiency, rapid traffic opening and the like, with the research on the precast concrete pavement at home and abroad, the transportation, the connection, the water prevention and the like are no longer the obstacles for hindering the development of the precast concrete pavement, and the precast pavement begins to transition from the test stage to the engineering application stage.
Compared with a precast concrete pavement, the precast asphalt pavement is researched less at home and abroad, as a flexible material, a pavement slab prepared from an asphalt material has lower rigidity, and is very easy to damage in transportation and hoisting, meanwhile, the precast concrete slab has higher rigidity and is difficult to meet the requirements of longitudinal and transverse slopes of the pavement, so the development of the precast asphalt pavement is limited to a great extent, the adhesion force is provided only by adhesion layer oil between the layers of the single precast asphalt pavement slab, the mechanical index is lower through shear test tests, pavement diseases are easy to occur in the using process of the road, and how to fully exert the pavement performance of the asphalt material and the construction advantages of the precast pavement is the development direction of the precast assembled asphalt pavement.
Disclosure of Invention
In order to solve the problems, the invention provides a double-layer composite full-prefabricated assembled pavement, which has the following specific technical scheme:
a double-layer composite full-prefabricated assembly type pavement comprises a double-layer composite prefabricated pavement slab, a prefabricated asphalt filling block and a prefabricated concrete filling block, wherein the upper layer of the pavement slab is a prefabricated asphalt surface layer, the lower layer of the pavement slab is a prefabricated concrete base, and the concrete base is prefabricated into a rigid or flexible concrete base so as to be suitable for a straight line flat road section or a longitudinal and transverse slope road section; the edge both sides of pavement slab reserve to have a plurality ofly by the downward reservation hole of seting up to the concrete foundation of pitch surface course, pitch filling block and concrete filling block and reservation hole phase-match, dispose the reinforcing bar net in the pavement slab, the main atress muscle of reinforcing bar net extends to in the reservation hole and makes the pavement slab splice each other as the dowel bar, dual waterproof processing is done to the seam crossing that the pavement slab spliced.
Furthermore, the asphalt surface layer is made of a paving material of a compact or large-pore asphalt mixture, a hot-mixing hot-paving asphalt mixture or a cold-mixing cold-paving emulsified asphalt mixture paving method is adopted, the asphalt surface layer is bonded on the concrete base through binding oil and geotextile, and the concrete base is made of a solid waste recycled aggregate concrete material or a flexible concrete material.
Furthermore, the reinforcing mesh is a single-layer or double-layer reinforcing mesh, wherein the longitudinal reinforcing steel bars are arranged in the middle of the pavement slab and have a spacing not larger than 300mm, and the transverse reinforcing steel bars are arranged below the longitudinal reinforcing steel bars and have a spacing not larger than 600 mm; the diameter of the main stress rib of the transverse steel bar meets the hoisting requirement, the end part of the transverse steel bar is encrypted, and the distance between the main stress rib of the transverse steel bar positioned on the two sides of the pavement slab and the edge of the pavement slab is 1/5-1/4 of the length of the pavement slab; the main stress bars of the transverse and longitudinal steel bars are used as dowel bar members for the mutual connection of the road slabs.
Furthermore, the size of the reserved hole is a semi-cylinder with the diameter of 160mm, and the depth of the reserved hole is 3/5-4/5 of the thickness of the concrete base from top to bottom.
Furthermore, the main stress bars of the transverse and longitudinal steel bars are ribbed steel bars, the ends of the main stress bars are subjected to thread rolling, the length of the thread rolling is 60-70 mm, and straight thread sleeves for assisting hoisting and interconnecting the two paths of main stress bars of the panel are arranged on the main stress bars.
Furthermore, the pavement slab adopts a through-hole four-point hoisting technology, the main stress bar of the transverse steel bar is used as a suspender, and each pavement slab is provided with two suspenders which are locked by straight thread sleeves.
Further, the concrete base that splices each other is dual waterproof, and waterproofing membrane is laid along seam crossing between two parties to the road bed course of curb plate below, and the seam crossing at the bottom of two road bed slabs pastes the sealing strip, scribbles sealed glue simultaneously.
A construction method of a double-layer composite full-prefabricated assembly type pavement comprises the following steps:
(1) prefabricating pavement slabs, asphalt fill blocks and concrete fill blocks according to any one of claims 1 to 5;
(2) hoisting the pavement slab to the pavement base by using the hoisting technology as claimed in claim 6;
(3) waterproofing the concrete foundation by the waterproofing scheme according to claim 7;
(4) connecting main stress ribs of the spliced road slabs by using straight thread sleeves;
(5) filling concrete filling blocks and asphalt filling blocks;
(6) filling emulsified asphalt at the joint of the asphalt surface layers which are spliced with each other, compacting and leveling after heating, sequentially splicing to the whole road section, and opening the traffic after passing inspection.
Further, the pavement base layer in the step (2) is a graded broken stone flexible base layer or a water-stable layer, and the thickness of the pavement base layer is reduced along with the increase of the thickness of the asphalt surface layer.
Further, when the road surface base layer adopts a water stabilization layer, the cement content of the road surface base layer is not more than 3%.
Has the advantages that:
(1) the invention optimizes the structure and the assembly method of the prefabricated pavement slab, solves the problem of joint bonding of pavement slab assembly, realizes the prefabrication of the asphalt pavement, and is a new road construction mode;
(2) the double-layer overlapped design is adopted, the transportation limitation of the traditional assembled pavement is broken through, the integrity of the asphalt panel can be protected to the maximum extent, and the construction efficiency and the construction process level are improved;
(3) the asphalt surface layer is seamlessly bonded by using the emulsified asphalt, so that the number of joints of the prefabricated pavement is reduced, and the driving comfort is improved; the precast concrete slab adopts solid waste recycled aggregate concrete at a straight line leveling road section, so that the exploitation and utilization of natural aggregate are reduced, and the precast concrete slab adopts flexible concrete at a longitudinal and transverse slope road section and is suitable for different road sections;
(4) the concrete base is connected through the main stress rib and the auxiliary straight thread sleeve, so that the construction process is simplified, the construction difficulty is reduced, and the strength and the integrity of the prefabricated pavement are enhanced;
(5) the invention adopts a through hole hoisting mode, and the transverse main stress rib is used as a suspender, thereby avoiding the mortar filling operation of the reserved hole after the construction is finished, and the pavement structure is more beautiful;
(6) the asphalt surface layer adopts an asphalt material with larger void ratio, rainwater can permeate the asphalt to infiltrate down to the concrete layer, so that water accumulation on the pavement is avoided, the concrete base is provided with double waterproof measures to prevent the rainwater from infiltrating down to the pavement base layer, and the stability of the pavement slab is ensured;
(7) when the road structure of the prefabricated pavement is damaged, the prefabricated slab is dismantled and replaced by a new prefabricated slab, so that the rapid maintenance of the asphalt pavement can be realized.
Drawings
Fig. 1 is a schematic view of a single pavement slab structure according to the present invention.
Fig. 2 is a schematic view showing the use of the pavement material of the present invention.
FIG. 3 is a schematic view of a straight threaded bushing connection of the present invention.
Fig. 4 is a schematic diagram of the road slab splicing effect of the present invention.
In the figure: 1 concrete foundation, 2 pitch surface courses, 3 vertical reinforcing bars, 4 horizontal reinforcing bars, 5 preformed hole, 6 straight thread sleeve.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
as shown in fig. 1 and 2, a double-layer composite fully-prefabricated assembly type pavement comprises a double-layer composite prefabricated pavement slab, a prefabricated asphalt filling block and a prefabricated concrete filling block, wherein the upper layer of the pavement slab is a prefabricated asphalt surface layer 2, the lower layer of the pavement slab is a prefabricated concrete base 1, and the concrete base 1 is prefabricated into a rigid or flexible concrete base 1 so as to be suitable for a straight line leveling road section or a longitudinal and transverse slope road section; the edge both sides of pavement slab reserve to have a plurality ofly by pitch surface course 2 downwards set up to concrete foundation 1 reserve hole 5, pitch filling block and concrete filling block and reserve hole 5 phase-matches, dispose the reinforcing bar net in the pavement slab, the main atress muscle of reinforcing bar net extends to in reserving hole 5 and makes the pavement slab splice each other as the dowel bar, dual waterproof processing is done to the seam crossing that the pavement slab spliced.
The asphalt surface layer 2 is made of a paving material of a compact or large-pore asphalt mixture, and is bonded on the concrete base 1 by using a hot-mixing hot-paving asphalt mixture or a cold-mixing cold-paving emulsified asphalt mixture paving method and bonding oil and geotextile; concrete foundation 1 adopts different concrete materials for adapting to different road surface demands, to sharp smooth highway section, adopts solid waste regeneration aggregate concrete material, promotes the regeneration of solid waste resource, and to indulge the horizontal slope highway section, concrete foundation 1 adopts flexible concrete material to be suitable for the road surface vertical and horizontal slope requirement. The reserved hole 5 of the pavement slab is a semicircle with the radius of 80mm, and the depth of the reserved hole is 3/5-4/5 of the thickness of the concrete base 1 from top to bottom.
In the embodiment, the length, width and height of the pavement slab are 3500mm × 2500mm × 260mm, wherein the thickness of the upper asphalt slab is 50mm, the thickness of the lower concrete slab is 210mm, the reserved holes 5 are semi-cylinders with the diameter of 160mm and the height of 210mm, the pavement slab is symmetrically arranged, and 1 group of reserved holes 5 are arranged on the length side of the pavement slab and are positioned in the center of the length measurement; the width side of pavement slab sets up 2 and reserves hole 5, and the outside is 410mm apart from the edge of pavement slab.
The precast asphalt filling blocks have two specifications of size, the large precast asphalt filling block is a cylinder with the diameter of 160mm and the height of 50mm, the small precast asphalt filling block is a semi-cylinder with the diameter of 160mm and the height of 50mm, the precast concrete filling block has two specifications of size, the large precast concrete filling block is a cylinder with the diameter of 160mm and the height of 160mm, and the small precast concrete slab filling block is a semi-cylinder with the diameter of 160mm and the height of 160 mm; in the road splicing process, the holes in the upper asphalt surface layer 2 are filled with asphalt filling blocks, and the holes in the lower concrete base 1 are filled with concrete filling blocks.
As shown in fig. 1, the reinforcing mesh is a single-layer or double-layer reinforcing mesh, wherein the longitudinal reinforcing bars 3 are disposed at the middle of the pavement slab at intervals of not more than 300mm, and the transverse reinforcing bars 4 are disposed under the longitudinal reinforcing bars at intervals of not more than 600 mm; the diameter of the main stress rib of the longitudinal steel bar 3 meets the dowel bar specification requirement, the diameter of the main stress rib of the transverse steel bar 4 meets the hoisting requirement, the end part of the main stress rib is encrypted, the distance between the main stress rib of the transverse steel bar 4 positioned on two sides of the pavement slab and the edge of the pavement slab is 1/5-1/4 of the length of the pavement slab, and preferably, the distance is 0.207 of the length of the pavement slab; the main stress bars of the longitudinal and transverse steel bars 3 and 4 are used as dowel steel members for the mutual connection of the road slabs. The main stress ribs of the longitudinal and transverse steel bars 3 and 4 are ribbed steel bars, the end parts of the main stress ribs are rolled, the length of the rolled thread is 60-70 mm, a straight thread sleeve 6 used for assisting hoisting and connecting the two paths of panel main stress ribs is arranged on the main stress ribs, and the tooth pitch is determined according to the specification of the straight thread sleeve 6 and is generally 3 mm.
In this embodiment, the pavement slab is configured with a single-layer steel bar mesh, the distance between the longitudinal steel bars is 230mm, the distance between the transverse steel bars is 380mm, the diameter of the main stressed steel bar is 28mm, the diameter of the non-main stressed steel bar is 12mm, the longitudinal steel bars 3 are configured in the middle of the lower concrete precast slab, the transverse steel bars 4 are configured below the longitudinal steel bars 3, and the end reinforcing bars of the transverse steel bars 4 are encrypted. The main stress rib extends to the reserved hole 5 to serve as a dowel bar and a pull rod component, thread rolling is conducted when the two ends of the main stress rib are used, the thread rolling length is 65mm, the thread pitch is 3mm, and the length of the straight thread sleeve is 6 mm.
The curb plate adopts through-hole four-point hoisting technique, and the main atress muscle of horizontal reinforcing bar 4 uses as the jib, and every curb plate sets up two jibs, has avoided the construction to the mortar filling operation of hoist and mount hole after accomplishing, and the road surface structure is more pleasing to the eye to by the dead lifting rope of straight thread sleeve 6 lock, avoid the lifting rope to produce and slide.
Splice each other concrete base 1 is dual waterproof, and waterproofing membrane is laid along seam crossing between two parties to the road surface basic unit of pavement slab below, and two road surface plate piece seam crossings paste the sealing strip, scribble sealed glue simultaneously. In this embodiment, 400mm wide self-adhesive waterproofing membrane is laid along seam crossing in the middle to the road surface basic unit, pastes water-swelling rubber strip at the side seam junction of concrete base 1, and its size is 3mm x 10 mm.
If pitch surface 2 adopts the great bituminous material of void fraction when, the rainwater can see through pitch surface 2 and infiltrate down to the surface of concrete foundation 1, avoids the surface gathered water, and concrete foundation 1 does dual waterproof measure, can prevent the rainwater to infiltrate down to the road surface basic unit, guarantees the stability of pavement slab. After the waterproof procedure is finished, the straight thread sleeve 6 is used for connecting the main stress ribs of the two paths of the panels (the locking process of the straight thread sleeve 6 shown in figure 3), so that the road panels are spliced into a whole, and the strength and the integrity of the prefabricated road panels are effectively enhanced; the joint of the asphalt surface layer 2 of the road surface plates which are spliced mutually is seamlessly bonded by using the self-healing performance of asphalt materials to assist emulsified asphalt, and the emulsified asphalt is compacted and leveled by a small-sized road roller after being heated by a heating plate; splicing to the whole road section in sequence, and opening the traffic after the inspection is qualified; the splicing effect is shown in fig. 4, wherein a is a splicing process, and b is a road effect diagram after splicing is completed.
According to the construction process, a construction method of the double-layer composite full-prefabricated assembly type pavement is provided, and comprises the following steps:
(1) prefabricating the road slab, the asphalt filling block and the concrete filling block;
(2) hoisting the pavement slab to the pavement base by adopting the hoisting technology;
(3) the concrete base 1 is subjected to waterproof treatment by adopting the waterproof scheme;
(4) connecting main stress ribs of the spliced road slabs by using the straight thread sleeve 6;
(5) filling concrete filling blocks and asphalt filling blocks;
(6) filling emulsified asphalt into the joints of the asphalt surface layers 2 which are spliced with each other, and compacting and leveling after heating; and sequentially splicing the road sections to the whole road section, and opening the traffic after the road sections are qualified through inspection.
In the above steps, the pavement base is a graded broken stone flexible base or a water-stable layer, and the thickness of the pavement base is reduced along with the increase of the thickness of the asphalt surface layer 2. When the pavement base adopts a graded broken stone base, the thickness of the pavement base is 180mm, and the cross slope is 2%; when the pavement base adopts a water-stable layer, the cement content is not more than 3 percent.
The step of prefabricating the road slab in the step (1) comprises the following steps: (1) preparing a mould of the concrete base 1, wherein the mould is a detachable mould of a wooden four-side enclosure; coating a layer of release agent in a precast concrete base 1 mould, presetting longitudinal and transverse reinforcing bars, carrying out encryption processing on the end part of a suspender reinforcing bar, and rolling a main stress bar according to the length required by the design; pouring concrete, spraying water, curing to reach the strength of more than 95% of the designed strength, and then hoisting the concrete base 1 into the asphalt surface layer 2 paving platform; the mould of the asphalt surface layer 2 is a steel mould, the mould of the asphalt surface layer 2 is placed on the concrete base 1, the clay layer oil is sprinkled on the concrete base 1, the geotextile is paved, then the compacted asphalt mixture is paved to form the asphalt surface layer 2, and the hoisting splicing operation can be carried out after the paving of the asphalt surface layer 2 is completed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. A double-layer composite full-prefabricated assembly type pavement is characterized by comprising a double-layer composite prefabricated pavement slab, a prefabricated asphalt filling block and a prefabricated concrete filling block, wherein the upper layer of the pavement slab is a prefabricated asphalt surface layer, the lower layer of the pavement slab is a prefabricated concrete base, and the concrete base is prefabricated into a rigid or flexible concrete base so as to be suitable for a straight line flat road section or a longitudinal and transverse slope road section; the edge both sides of pavement slab reserve to have a plurality ofly by the downward reservation hole of seting up to the concrete foundation of pitch surface course, pitch filling block and concrete filling block and reservation hole phase-match, dispose the reinforcing bar net in the pavement slab, the main atress muscle of reinforcing bar net extends to in the reservation hole and makes the pavement slab splice each other as the dowel bar, dual waterproof processing is done to the seam crossing that the pavement slab spliced.
2. The double-layer composite full-prefabricated fabricated pavement according to claim 1, wherein the asphalt surface layer is made of a paving material of a dense or large-pore asphalt mixture, a hot-mix hot-paving asphalt mixture or a cold-mix cold-paving emulsified asphalt mixture, and is bonded to the concrete base through a binder oil and a geotextile, and the concrete base is made of a solid waste recycled aggregate concrete material or a flexible concrete material.
3. The double-deck composite fully-prefabricated assembled pavement according to claim 1, wherein the reinforcing mesh is a single-deck or double-deck reinforcing mesh, wherein the longitudinal reinforcing bars are disposed at the middle of the pavement slab at intervals of not more than 300mm, and the transverse reinforcing bars are disposed under the longitudinal reinforcing bars at intervals of not more than 600 mm; the diameter of the main stress rib of the transverse steel bar meets the hoisting requirement, the end part of the transverse steel bar is encrypted, and the distance between the main stress rib of the transverse steel bar positioned on the two sides of the pavement slab and the edge of the pavement slab is 1/5-1/4 of the length of the pavement slab; the main stress bars of the transverse and longitudinal steel bars are used as dowel bar members for the mutual connection of the road slabs.
4. The double-layer composite fully-prefabricated assembly type pavement according to claim 3, wherein the reserved holes are semicircular cylinders with the diameter of 160mm, and the depth of the reserved holes from top to bottom is 3/5-4/5 of the thickness of the concrete base.
5. The double-deck combined type fully-prefabricated assembled pavement according to claim 4, wherein: the main stress bars of the transverse and longitudinal steel bars are ribbed steel bars, the end parts of the transverse and longitudinal steel bars are rolled, the length of the rolled thread is 60-70 mm, and straight thread sleeves for assisting hoisting and interconnecting the two paths of panel main stress bars are arranged on the main stress bars.
6. The double-layer composite fully-prefabricated assembled pavement according to claim 5, wherein the pavement slab adopts a through-hole four-point hoisting technology, main stress bars of transverse steel bars are used as hanging rods, two hanging rods are arranged on each pavement slab, and the hanging ropes are locked by straight thread sleeves.
7. The double-layer composite fully-prefabricated assembly type pavement according to claim 1, wherein the concrete bases spliced with each other are used for double waterproofing, a waterproof coiled material is laid in the middle of the pavement base layer below the pavement slab along the joint, and the joint of the two pavement slabs is pasted with the sealing strip and is coated with the sealing glue.
8. A construction method of a double-layer composite full-prefabricated assembly type pavement is characterized by comprising the following steps:
(1) prefabricating pavement slabs, asphalt fill blocks and concrete fill blocks according to any one of claims 1 to 5;
(2) hoisting the pavement slab to the pavement base by using the hoisting technology as claimed in claim 6;
(3) waterproofing the concrete foundation by the waterproofing scheme according to claim 7;
(4) connecting main stress ribs of the spliced road slabs by using straight thread sleeves;
(5) filling concrete filling blocks and asphalt filling blocks;
(6) filling emulsified asphalt at the joint of the asphalt surface layers which are spliced with each other, compacting and leveling after heating, sequentially splicing to the whole road section, and opening the traffic after passing inspection.
9. The method of claim 8, wherein the base course layer of step (2) is a graded macadam flexible base course layer or a water-stable layer, and the thickness of the base course layer is reduced as the thickness of the asphalt surface course layer is increased.
10. The method of claim 9, wherein the cement content of the base course layer is no greater than 3% when the base course layer is a water-stable layer.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808592A (en) * | 2022-04-19 | 2022-07-29 | 中建科技集团有限公司 | Assembled airport pavement and construction method thereof |
| CN114875761A (en) * | 2022-05-24 | 2022-08-09 | 浙江嘉湖生态建设有限公司 | Rapid repair structure for municipal road and construction method thereof |
| CN114875734A (en) * | 2022-05-05 | 2022-08-09 | 刘时伟 | Concrete structure assembled road surface |
| CN115094700A (en) * | 2022-05-26 | 2022-09-23 | 上海市城市建设设计研究总院（集团）有限公司 | Assembly type structure and construction method for asphalt pavement in rail running area of tramcar |
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| CN114875734A (en) * | 2022-05-05 | 2022-08-09 | 刘时伟 | Concrete structure assembled road surface |
| CN114875761A (en) * | 2022-05-24 | 2022-08-09 | 浙江嘉湖生态建设有限公司 | Rapid repair structure for municipal road and construction method thereof |
| CN115094700A (en) * | 2022-05-26 | 2022-09-23 | 上海市城市建设设计研究总院（集团）有限公司 | Assembly type structure and construction method for asphalt pavement in rail running area of tramcar |
| CN115094700B (en) * | 2022-05-26 | 2024-01-05 | 上海市城市建设设计研究总院（集团）有限公司 | Tramcar track area asphalt pavement assembly type structure and construction method |
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