CN116240801A - Rail type deformation isolation layer and seamless pile plate type road based on same - Google Patents
Rail type deformation isolation layer and seamless pile plate type road based on same Download PDFInfo
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- CN116240801A CN116240801A CN202310447876.XA CN202310447876A CN116240801A CN 116240801 A CN116240801 A CN 116240801A CN 202310447876 A CN202310447876 A CN 202310447876A CN 116240801 A CN116240801 A CN 116240801A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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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
- E01C11/16—Reinforcements
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/02—Coherent pavings made in situ made of road-metal without binders
- E01C7/04—Coherent pavings made in situ made of road-metal without binders of broken stones, gravel, or like materials
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a rail type deformation isolation layer and a seamless pile-slab road based on the isolation layer. The road cancels the expansion joint, fundamentally avoids the problems of expansion joint, bridge head guide plate diseases, bridge head jumping and the like, and realizes the seamless pile plate type road with good integrity, good durability, low maintenance cost and good driving comfort.
Description
Technical Field
The invention relates to pile plate type structure design and construction technology, in particular to a rail type deformation isolation layer and a seamless pile plate type road based on the isolation layer.
Background
Currently, traffic construction gradually enters the bottleneck: (1) the land can be occupied, and the situation of no land can be severe; (2) the land occupation and soil taking cost are increased; (3) and the cost of soil treatment and land reclamation is improved. The economy and applicability of conventional land and earth based highway construction is severely impacted. The method adopts a structural viewpoint and an industrialization mode, and implements the low-soil, non-soil, high-efficiency and low-cost construction of traffic construction on the scale and serialization level, thereby being a necessary choice for coping with the actual challenges and responding to the green development. Currently, efforts in this regard have focused on traditional bridging. The pile-board type road is replaced by a bridge, so that the land-sign requirement can be greatly reduced, and the pile-board type road has important significance for saving land resources. However, under the action of dynamic load, temperature and shrinkage and creep of concrete, the beam body deforms, and the driving comfort and safety can be influenced when the deformation is overlarge, so that expansion joints are required to be arranged for adjusting deformation displacement and connection between bridge upper structures. But the design is improper, the installation quality is poor, and the scientific timely maintenance is lacking, the expansion joint can jump, which is a common disease in China at present and is more and more prominent. The bridge expansion joint is damaged, sunk and staggered, when a vehicle passes through, the bridge is subjected to jumping impact, additional load is generated, driving comfort is affected, and safety accidents are generated in severe cases.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a rail type deformation isolation layer and a seamless pile-slab road based on the isolation layer, wherein the rail type deformation isolation layer adopts a mode of combining a reinforced graded broken stone layer and a flexible rail positioned on the upper layer of the reinforced graded broken stone layer, so that the internal digestion capacity of deformation of a pile-slab type road pile-slab combined frame is enhanced, and the seamless connection of paving of the pile-slab type road layer is realized. Specifically:
the rail type deformation isolation layer provided by the invention is applied to a lower layer paved on an upper layer of a beam slab, and comprises a reinforced graded broken stone layer and a flexible rail positioned on the upper layer of the reinforced graded broken stone layer, wherein the flexible rail is arranged at a bridge deck track belt.
Optionally, in some embodiments, the flexible rail adopts a second welded reinforcement mesh, and is disposed on the top surface of the reinforced graded broken stone layer, and overlapped with the top surface of the reinforced graded broken stone layer by reinforced reinforcement, and preferably, the second welded reinforcement mesh is disposed on one layer.
Optionally, in some embodiments, the construction process of the flexible rail includes:
(1) The distance and the diameter of the steel bars of the second welded steel bar net are consistent with the corresponding parameters of the top surface reinforcement of the reinforcement graded broken stone layer;
(2) Width of welded reinforcing mesh B g ≥0.75m。
Optionally, in some embodiments, the reinforcement of the reinforced graded broken stone layer adopts a first welded reinforcement mesh, the first welded reinforcement mesh is disposed on the top surface of the reinforced graded broken stone layer or is disposed on the top surface and the inside of the reinforced graded broken stone layer respectively, that is, a layer of first welded reinforcement mesh is disposed on the top surface of the reinforced graded broken stone layer, a layer of first welded reinforcement mesh is disposed inside the reinforced graded broken stone layer, and the first welded reinforcement mesh is designed according to the following rule:
(1) The steel bar spacing of the first welded steel bar net is according to b g ≥4.5d max Calculating;
(2) The diameter of the steel bars of the first welded steel bar net is d g ≥b g And/15 calculation.
Optionally, in some embodiments, the connection between the second welded reinforcement mesh of the flexible rail and the top surface reinforcement (first welded reinforcement mesh) of the reinforced graded stone layer is designed according to the following rules:
(1) The first welded reinforcing steel bar mesh and the second welded reinforcing steel bar mesh are connected in a free lap joint mode;
(2) And overlapping at least one steel bar mesh between the first welded steel bar mesh and the second welded steel bar mesh.
Optionally, in some embodiments, the construction process of the reinforced graded crushed stone layer includes:
(1) Maximum particle diameter d of collected crushed stone max ＝31.5mm；
(2) Stone crush values no greater than 26%;
(3) The particle composition is a plastic-free tail-cutting smooth curve, and the collection and allocation meet the following table specifications:
| screen mesh size (mm) | Yield (%) |
| 31.5 | 100 |
| 19 | 85～100 |
| 9.5 | 52～74 |
| 4.75 | 29～54 |
| 2.36 | 0 |
(4) The thickness of the reinforced graded broken stone layer is according to h g ≥4.25d max And (5) calculating.
Alternatively, in some embodiments, the reinforced graded stone layer is formed by rolling with a heavy-duty pneumatic roller to a thickness of 20cm and a compaction degree of 100%.
Optionally, in some embodiments, a T-shaped steel is arranged below the rail-type deformation isolation layer and embedded into a deformation joint between pile plate combined frames to prevent broken stones of the deformation isolation layer from scattering, and the T-shaped steel is designed according to the following rules:
(1) T-shaped steel top plate wide press b T ≥1.3(b K +δ K ) +100mm calculation;
(2) T-shaped steel top plate thick press T TD ≥b T 15 calculating;
(3) T-shaped steel web high-pressure h T ≥1.5(b K +δ K ) Calculating;
(4) T-shaped steel web thick press T TF ≥h T And/15 calculation.
Wherein b K Is the standard clearance of the deformation joint; delta K Is the incremental deformation of the deformation joint.
According to the seamless pile-slab road provided by the invention, the pile-slab road adopts the pile-slab combined frame, and the anti-deformation structure is arranged in the road and is used for absorbing the deformation of the pile-slab combined frame so as to realize seamless connection of upper pavement;
the deformation-resistant structure adopts the rail-type deformation isolation layer according to any one of claims 1 to 7.
Optionally, in some embodiments, the upper layer is paved by asphalt concrete, when the rail type deformation isolation layer and the upper layer are paved, the heavy tire road roller is used for rolling the reinforced graded broken stone layer, the one-time compaction thickness is 20cm, the compaction degree is 100%, after the reinforced graded broken stone layer is constructed, adhesive layer oil is spread on the top surface of the reinforced graded broken stone layer, then the top surface reinforced and the flexible rail are arranged, and then asphalt concrete is paved, wherein the construction sequence of the top surface reinforced (first welded reinforcing steel mesh) and the flexible rail (second welded reinforcing steel mesh) of the reinforced graded broken stone layer is implemented according to the actual application scene.
The rail type deformation isolation layer and the seamless pile plate type road based on the isolation layer have the following beneficial effects:
1. the rail type deformation isolation layer adopts a mode of combining the reinforced graded gravel layer and the flexible rail, so that the internal digestion of the deformation of the pile-slab type road pile-slab combined frame is realized, and the seamless connection of paving of the pile-slab type road layer is realized.
2. Considering the repeated action of the heavy load wheels borne by the positions of the lane wheel tracks, the flexible rail is arranged above the reinforced graded broken stone layer, and the flexible rail is arranged at the positions of the bridge deck wheel tracks, so that the internal digestion capacity of deformation of the pile-slab type road pile-slab combined frame is enhanced, and the service life of the seamless pile-slab type road based on the isolation layer is prolonged.
3. The seamless pile plate type road of the invention creates a novel road structure, greatly reduces various land areas of the road, and effectively solves the contradiction between the development of road traffic and the protection of land resources.
4. The seamless pile plate type road changes the traditional road construction mode, has simple structure, quick construction, low cost, high quality and good landscape, and promotes the development of the green road industrialized construction technology.
Drawings
FIG. 1 is a schematic view of an overall layout of spliced pile plank road;
FIG. 2 is a schematic view of a spliced pile board type road pavement structure;
FIG. 3 is a schematic view of a spliced pile plank road flexible rail.
In the figure: 1-pile board type road; 2-beam plates; 3-outer longitudinal ribs; 4-prefabricating piles; 5-roadbed; 6-connecting the sleeper beams; 7-pile plate combined frames; 8-paving an upper layer; 9-rail-type deformation isolation layer; 10-reinforcement; 11-T steel; 12-deformation joint; 13-flexible rail.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The following examples are given on the premise of the technical scheme of the present invention, and detailed embodiments, specific operation processes and quantitative calculation results are given, but the protection scope of the present invention is not limited to the following examples.
The pile plate type structure is characterized in that a beam plate is supported by piles, and a light bearing structure of a highway driving system is arranged on the beam plate and can be divided into a spliced wide type pile plate type structure and a full-width type pile plate type structure. The spliced wide pile plate type structure is a pile plate type structure which is supported at the top of a pile column by a beam plate and is supported, connected or lapped on the existing highway subgrade at one lateral side. The full-width pile plate type structure is a pile plate type structure in which a beam plate is fully supported at the top of a pile.
The following describes the technical scheme of the seamless pile-slab road according to the embodiment of the present application with the pile-slab road structure illustrated in fig. 1.
Referring to fig. 1, the reinforced concrete spliced pile board type road 1 with a theoretical span of 6m is used for the expansion highway engineering. Wherein, the C50 beam slab 2 is 0.26m thick, is provided with an outer longitudinal rib 3 with the height of 0.5m and the width of 1m, is supported on a C80 prefabricated pile 4 with the diameter of 0.6m, and the inner side is lapped on a C50 connecting sleeper beam 6 with the height of 0.5m and the width of 1m arranged along the edge of a roadbed 5 with the existing height of 6m, so as to form a multi-connected pile slab combined frame 7 with the width of 8.75m and supported by the prefabricated pile 4, wherein the beam slab 2 and the inner side are longitudinally supported.
Referring to fig. 2 and 3, asphalt concrete pavement is adopted as the upper pavement 8 at the top of the pile-slab road 1, which is 40mmAC10 (upper layer) +60mmAC13 (lower layer), and a rail type deformation isolation layer 9 is arranged below the upper pavement.
The rail type deformation isolation layer 9 comprises a reinforced graded broken stone layer and a flexible rail 13 positioned on the upper layer of the reinforced graded broken stone layer, wherein the flexible rail 13 is arranged at a bridge deck track belt. The rail deformation isolation layer 9 serves as an intermediate layer between the thinner asphalt pavement (upper pavement 8) and the semi-rigid base layer (beam slab 2).
Wherein, the flexible rail of the rail type deformation isolation layer 9 adopts a second welded reinforcement mesh, and is provided with a layer on the top surface of the reinforced graded broken stone layer, and is overlapped with the top surface of the reinforced graded broken stone layer by reinforcing. It will be appreciated that there are at least 2 welded rebar meshes for the flexible rail disposed at the bridge deck footprint, and that the width of each welded rebar mesh may be set slightly greater so that the probability of the wheels of a bridge deck passing vehicle to overlie the flexible rail is greater. Steel bar spacing and diameter of welded steel bar net of flexible railThe width of the welded reinforcing mesh of the flexible rail in the embodiment is consistent with the top surface reinforcement of the reinforced graded broken stone layer B g ≥0.75m。
The second welded reinforcing mesh of the flexible rail of the rail-type deformation isolation layer 9 is connected with the top surface reinforcing of the reinforced graded broken stone layer in a free lap joint mode, and the lap joint is not less than one reinforcing mesh.
The reinforcing steel bar of the reinforced graded broken stone layer adopts a welded reinforcing steel bar net, a layer of reinforcing steel bar net is arranged on the top surface of the deformation isolation layer, and the welded reinforcing steel bar net of the reinforced graded broken stone layer is designed according to the following rule:
(1) The distance between the steel bars of the welded steel bar net is b g ≥4.5d max Calculation, b in the embodiment of the present application g ＝150mm；
(2) Steel bar diameter d of welded steel bar net g ≥b g Calculation of/15, d in the examples of the present application g ＝12mm。
In the reinforced graded broken stone layer, the maximum particle diameter d of the mixed broken stone is as follows max =31.5 mm, the stone crush value is not greater than 26%, meeting standard requirements. The particles are formed into a plastic-free tail-cutting smooth curve so as to facilitate free dislocation between the beam plate 2 and the rail-type deformation isolation layer 9. The set meets the following table specifications:
| screen mesh size (mm) | Yield (%) |
| 31.5 | 100 |
| 19 | 85～100 |
| 9.5 | 52～74 |
| 4.75 | 29～54 |
| 2.36 | 0 |
The thickness of the reinforced graded broken stone layer is according to h g ≥4.25d max Calculation, in the embodiment of the application, h is adopted g ＝200mm。
T-shaped steel 11 is arranged below the rail type deformation isolation layer 9 and embedded into deformation joints 12 between the pile plate combined frames 7, so that broken stones of the deformation isolation layer are prevented from scattering. T-shaped steel 11 top plate wide press b T ≥1.3( b K +δ K ) +100mm calculation, in the examples of the present application b T =250 mm, press t TD ≥b T Calculation of/15, t in the examples of the present application TD =18 mm. T-shaped steel 11 web high-pressure h T ≥1.5( b K +δ K ) Calculation, in the embodiment of the application, adopts h T =150 mm, press t TF ≥h T Calculation of/15, t in the examples of the present application TF =10mm. Wherein b K A standard gap is formed for the deformation joint 12; delta K Incremental deformation for deformation joint 12.
When the reinforced graded broken stone layer is constructed, the reinforced graded broken stone layer is rolled by a three-wheel road roller with the speed of more than 12t, and the thickness of each layer is not more than 15-18 cm. The heavy vibratory roller and the pneumatic tire roller are used for rolling, the thickness of each layer can reach the standard of 20 cm', the heavy pneumatic tire roller is used for rolling, the thickness of one-time compaction is 20cm, and the compaction degree is 100%.
When the upper layer pavement 8 is constructed, the top surface of the rail type deformation isolation layer 9 is firstly spread with adhesive layer oil, then the reinforcement 10 is arranged, and then asphalt concrete is paved.
Therefore, a brand new paving system is established, free dislocation can be carried out between the rail type deformation isolation layer 9 and the beam slab 2, the upper layer paving 8 is not influenced by deformation of the pile slab combined frame 7 any more, and seamless connection to the inside and the outside is directly carried out only by self deformation of elastoplastic digestion.
By adopting the invention, the novel seamless connection and seamless splicing of the roads to the inside and the outside are realized, various land areas of the roads are greatly reduced, the contradiction between the development of road traffic and the protection of land resources is effectively solved, and the development of the green road industrialized construction technology is promoted.
The present invention is not limited to the above-described specific embodiments, and various modifications may be made by those skilled in the art without inventive effort from the above-described concepts, and are within the scope of the present invention.
Claims (10)
1. The utility model provides a rail formula deformation isolation layer, its characterized in that is applied to the lower floor that the beam slab upper strata was mated formation, rail formula deformation isolation layer includes the flexible rail that adds muscle grading gravel layer and be located the muscle grading gravel layer upper strata, flexible rail sets up in bridge floor track area department.
2. The track-type deformable isolation layer of claim 1, wherein the flexible track is formed by a second welded reinforcement mesh disposed on the top surface of the reinforced graded stone layer and overlapped with the reinforced bars on the top surface of the reinforced graded stone layer.
3. A rail-type deformation barrier according to claim 2, wherein the construction process of the flexible rail comprises:
(1) The distance and the diameter of the steel bars of the second welded steel bar net are consistent with the corresponding parameters of the top surface reinforcement of the reinforcement graded broken stone layer;
(2) Width of second welded reinforcing mesh B g ≥0.75m。
4. A rail-type deformation isolation layer according to claim 3, wherein the reinforcement of the reinforced graded stone layer is a first welded reinforcement mesh, the first welded reinforcement mesh is disposed on the top surface of the reinforced graded stone layer or disposed on the top surface and the inside of the reinforced graded stone layer respectively, and the first welded reinforcement mesh is designed according to the following rules:
(1) The steel bar spacing of the first welded steel bar net is according to b g ≥4.5d max Calculating;
(2) The diameter of the steel bars of the first welded steel bar net is d g ≥b g And/15 calculation.
5. The track-type deformable barrier of claim 4, wherein the connection between the second welded reinforcing mesh of the flexible track and the top surface reinforcement of the reinforced graded stone layer is designed according to the following rules:
(1) The two welded reinforcing steel bar meshes are connected in a free lap joint mode;
(2) And overlapping at least one steel bar mesh between the two welded steel bar meshes.
6. The track-type deformable barrier layer of claim 5, wherein the process of construction of the reinforced graded crushed stone layer comprises:
(1) Maximum particle diameter d of collected crushed stone max ＝31.5mm；
(2) Stone crush values no greater than 26%;
(3) The particle composition is a plastic-free tail-cutting smooth curve, and the grading meets the following regulations:
the passing rate range of the standard sieve holes of 2.36mm is 0;
the passing rate of the standard sieve holes of 4.75mm ranges from 29 to 54 percent;
the passing rate of the standard sieve holes of 9.5mm is 52-74%;
the passing rate of the standard sieve holes of 19mm is 85-100 percent;
the passing rate range of the standard sieve holes of 31.5mm is 100%;
(4) The thickness of the reinforced graded broken stone layer is according to h g ≥4.25d max And (5) calculating.
7. The track-type deformable spacer layer of claim 6 wherein the reinforced graded stone layer is formed by rolling with a heavy-duty pneumatic roller to a thickness of 20cm and a compaction degree of 100%.
8. The track-type deformation isolation layer according to claim 1, wherein a T-shaped steel is arranged below the track-type deformation isolation layer and embedded into a deformation joint between pile plate combined frames to prevent broken stones of the deformation isolation layer from scattering, and the T-shaped steel is designed according to the following rule:
(1) T-shaped steel top plate wide press b T ≥1.3(b K +δ K ) +100mm calculation;
(2) T-shaped steel top plate thick press T TD ≥b T 15 calculating;
(3) T-shaped steel web high-pressure h T ≥1.5(b K +δ K ) Calculating;
(4) T-shaped steel web thick press T TF ≥h T And/15 calculation.
Wherein b K Is the standard clearance of the deformation joint; delta K Is the incremental deformation of the deformation joint.
9. The seamless pile-slab road adopts a pile-slab combined frame and is characterized in that an anti-deformation structure is arranged in the road and used for absorbing deformation of the pile-slab combined frame and realizing seamless connection of upper pavement;
the deformation-resistant structure adopts the rail-type deformation isolation layer according to any one of claims 1 to 7.
10. The seamless pile board-like road of claim 9, wherein the upper layer is paved by asphalt concrete, and when the rail type deformation isolation layer and the upper layer are paved, the top surface of the reinforced graded broken stone layer is spread with the adhesive layer oil, then the top surface is provided with the reinforced and flexible rail, and then asphalt concrete is paved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310447876.XA CN116240801A (en) | 2023-04-24 | 2023-04-24 | Rail type deformation isolation layer and seamless pile plate type road based on same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310447876.XA CN116240801A (en) | 2023-04-24 | 2023-04-24 | Rail type deformation isolation layer and seamless pile plate type road based on same |
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| CN116240801A true CN116240801A (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310447876.XA Pending CN116240801A (en) | 2023-04-24 | 2023-04-24 | Rail type deformation isolation layer and seamless pile plate type road based on same |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10111935A1 (en) * | 2001-03-13 | 2001-10-04 | Karl Gerhards | Horizontal force bearing to couple bridge supporting frameworks, especially for railway bridge; has longitudinal flexible steel constructions connected at height of centroidal axis of frameworks |
| CN1493744A (en) * | 2002-10-28 | 2004-05-05 | 李兰英 | Road surface structare layer |
| CN103288385A (en) * | 2013-06-04 | 2013-09-11 | 重庆佳厚建筑材料有限公司 | Expansion joint material for bridge and expansion joint structure |
| CN113073538A (en) * | 2021-03-17 | 2021-07-06 | 安徽省交通规划设计研究总院股份有限公司 | High pile plate-soil combined road |
| CN213804863U (en) * | 2020-11-26 | 2021-07-27 | 中交二公局第四工程有限公司 | Temporary expansion joint construction device |
| CN216663672U (en) * | 2021-12-22 | 2022-06-03 | 上海力阳道路加固科技股份有限公司 | Road structure capable of reducing reflection crack diseases |
| CN115478458A (en) * | 2022-09-26 | 2022-12-16 | 宁波交通工程建设集团有限公司 | Integrated structure of white-to-black road surface of existing road bed block stone retaining wall and construction method |
-
2023
- 2023-04-24 CN CN202310447876.XA patent/CN116240801A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10111935A1 (en) * | 2001-03-13 | 2001-10-04 | Karl Gerhards | Horizontal force bearing to couple bridge supporting frameworks, especially for railway bridge; has longitudinal flexible steel constructions connected at height of centroidal axis of frameworks |
| CN1493744A (en) * | 2002-10-28 | 2004-05-05 | 李兰英 | Road surface structare layer |
| CN103288385A (en) * | 2013-06-04 | 2013-09-11 | 重庆佳厚建筑材料有限公司 | Expansion joint material for bridge and expansion joint structure |
| CN213804863U (en) * | 2020-11-26 | 2021-07-27 | 中交二公局第四工程有限公司 | Temporary expansion joint construction device |
| CN113073538A (en) * | 2021-03-17 | 2021-07-06 | 安徽省交通规划设计研究总院股份有限公司 | High pile plate-soil combined road |
| CN216663672U (en) * | 2021-12-22 | 2022-06-03 | 上海力阳道路加固科技股份有限公司 | Road structure capable of reducing reflection crack diseases |
| CN115478458A (en) * | 2022-09-26 | 2022-12-16 | 宁波交通工程建设集团有限公司 | Integrated structure of white-to-black road surface of existing road bed block stone retaining wall and construction method |
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