A construction method to improve the drainage capacity of road structures

Abstract

This invention provides a construction method for improving the drainage capacity of road structures, relating to the field of drainage function technology for the renovation and upgrading of old roads. It separates water bodies between the upper and lower structural layers and the original ground surfaces on both sides of the road structure layer by forming an emulsified asphalt layer and waterproof geotextile. A rapid drainage structure is formed using a concrete pavement crushed stone layer, filled with crushed stone, drainage geogrids, sidewalk rubble, a filter layer, and drainage pipes. This achieves rapid drainage of the road structure, ensuring the stability of the road structure layer in the renovation of old pavements, reducing differential settlement caused by groundwater and other factors, and avoiding disturbance to the road and the resulting reflective cracks. This invention improves the drainage performance at the junction of sidewalks and roads, reducing water disturbance problems.

Description

Technical Field

[0001] This invention provides a construction method for improving the drainage capacity of road structures, relating to the field of drainage function technology for the renovation and upgrading of old roads. Background Technology

[0002] In the renovation of old concrete roads with heavy traffic loads and abundant water areas, water disturbance has a serious impact on the quality of road renovation. In the past, methods such as wellpoint dewatering and foundation deepening and replacement were costly and had long construction periods. How to reduce or eliminate the quality hazards caused by water disturbance in the renovation of old concrete roads with heavy traffic loads and abundant water areas in an economical and high-quality manner is a difficult problem.

[0003] In existing technologies, drainage equipment is installed on roads. Drainage equipment refers to the overall system of facilities for the collection, transportation, treatment and discharge of drainage in a certain way. It is a general term for drainage ditches (pipes) and structures at all levels used for flood control, waterlogging prevention and salinization prevention. It mainly consists of field drainage regulation networks, drainage ditches at all levels, water storage lakes, drainage gates, pumping stations and drainage storage areas. Excess water in the drainage area first flows into the field drainage regulation network, and then is stored in drainage ditches at all levels or in lakes before being discharged to the storage area by drainage gates or pumping stations.

[0004] However, in the renovation of old roads, the drainage capacity at the junction between the road surface and the sidewalk is poor, which is why water easily accumulates at the junction. In view of this, this invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a construction method to improve the drainage capacity of road structures, thereby improving the drainage performance at the junction of sidewalks and roads and reducing water disturbance problems.

[0006] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention. This invention discloses the basic concept of the technical solution adopted to solve the above-mentioned technical problems as follows:

[0007] A construction method for improving the drainage capacity of road structures includes the following steps:

[0008] Step 1: First, the old road surface on the upper side of the original road base is crushed with concrete pavement to form a crushed concrete pavement layer. The original road curb is filled with crushed stone to form a crushed stone filling area. The original road surface is crushed and compacted.

[0009] Step 2: Install drainage geogrids on both sides of the road and extend them to the rubble layer of the sidewalk, then spray emulsified asphalt to form an emulsified asphalt layer.

[0010] Step 3: Next, lay waterproof geotextile on both sides of the road and extend it to the side of the rubble layer of the sidewalk.

[0011] Step 4: Water is separated between the upper and lower structural layers and the road structural layer and the original ground on both sides by emulsified asphalt and waterproof geotextile. A rapid drainage structure is formed by using concrete pavement crushed stone layer, filling crushed stone, drainage geogrid, sidewalk rubble, filter layer and drainage pipe.

[0012] Step 5: A new pavement structure layer is formed on the emulsified asphalt layer, and a sidewalk structure layer is formed by laying on the waterproof geotextile.

[0013] In a further technical solution, both the waterproof geotextile and the drainage geogrid are overlapped on the emulsified asphalt layer.

[0014] In a further technical solution, the filter layer package includes a bottom frame with a support side provided on the bottom frame. The support side is adapted to abut against the bottom of the paving stone layer. A drainage interface is installed on the side of the bottom frame away from the support side, and the drainage interface is connected to a drainage pipe.

[0015] In a further technical solution, the bottom frame also includes a U-shaped plate, and the side of the U-shaped plate opposite to the paving stone layer is provided with a locking piece, which is suitable for insertion into the paving stone layer;

[0016] The U-shaped plate is provided with two sets of support strips arranged symmetrically. A screen plate is detachably installed between the two sets of support strips. A drain outlet is provided at the bottom of the screen plate and is connected to a drainage interface.

[0017] In a further technical solution, the drainage geogrid includes at least one geogrid plate and two geogrid plates, with the second geogrid plate located on the upper side of the rubble layer of the sidewalk and the first geogrid plate located on the side of the crushed stone filling area; the first geogrid plate and the second geogrid plate are hinged together.

[0018] In a further technical solution, the second grating plate is provided with a drainage channel, and the bottom of the second grating plate is provided with an adjustment frame, which is adapted to raise the side located in the crushed stone filling area.

[0019] In a further technical solution, the adjusting frame includes a lower plate and a telescopic cylinder. The bottom of the telescopic cylinder is fixedly connected to the lower plate, and the bottom of the second grid plate is provided with a hinge ear. The top of the telescopic cylinder is rotatably connected to the hinge ear.

[0020] The telescopic cylinder includes a fixed cylinder body and a threaded rod, the threaded rod being threadedly connected to the fixed cylinder body, and the top of the threaded rod being connected to a hinge lug.

[0021] Beneficial effects:

[0022] Emulsified asphalt and waterproof geotextile isolate the sidewalk structure and water bodies on both sides from the outside, reducing the way water disturbance enters the roadbed and solving the source of water disturbance from the outside; (2) The rapid drainage structure formed by the concrete pavement crushed stone layer, filling crushed stone, drainage geogrid, sidewalk rubble, filter layer and drainage pipe quickly removes water from the roadbed within the road area. The crushed stone layer, filling crushed stone and sidewalk rubble layer form the first layer of external drainage structure, and the filter layer serves as the second layer of external drainage structure, realizing rapid roadbed drainage.

[0023] This method is safe, reliable, easy to operate, and of guaranteed quality. It can significantly reduce the cost of dealing with quality problems such as settlement and reflective cracks caused by water disturbance during the renovation of old concrete roads with heavy traffic loads and abundant water areas.

[0024] The bottom frame of this invention is U-shaped, and a screen plate is installed at the bottom for water and soil separation. The drain outlet and drainage interface at the bottom enable pipe connection, allowing accumulated water to be discharged at an angle downwards. The locking tabs and support edges are inserted into the rubble layer of the sidewalk to form a fixed structure.

[0025] This invention involves installing a second grating plate to compact the crushed stone filling area and the rubble layer of the sidewalk, and reinforcing the crushed stone filling area from one side through the grating plate. Inserts are installed on the first grating plate and inserted into the crushed stone filling area. To reduce rainwater accumulation at the steps, it is necessary to drain the water at an angle downwards. This can be achieved by setting an adjustment frame at the bottom. The side closer to the crushed stone filling area is raised to achieve an angled downward drainage channel. The end of the drainage channel away from the crushed stone filling area is not closed to achieve angled downward drainage. The accumulated rainwater is discharged downwards along the waterproof geotextile. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention;

[0028] Figure 2 This is a cross-sectional schematic diagram of Embodiment 2 of the present invention;

[0029] Figure 3 for Figure 2 Enlarged view of part A;

[0030] Figure 4 This is a structural diagram of the bottom frame of the present invention;

[0031] Figure 5This is a cross-sectional schematic diagram of Embodiment 3 of the present invention;

[0032] Figure 6 for Figure 5 Enlarged view of part B;

[0033] Figure 7 This is a top view of the grating plate of the present invention.

[0034] In the diagram: 1. Waterproof geotextile; 2. Drainage geogrid; 3. Filter layer; 4. Drainage pipe; 31. Support; 32. Drainage interface; 33. U-shaped plate; 34. Bayonet; 35. Bearing strip; 36. Screen plate; 37. Drain outlet; 21. Grating plate one; 22. Grating plate two; 221. Drainage channel; 222. Lower plate; 223. Hinge ear; 224. Fixed cylinder; 225. Threaded rod; 100. Existing road base layer; 200. Concrete pavement crushed stone layer; 300. Emulsified asphalt layer; 400. New pavement structural layer; 700. Sidewalk rubble layer; 600. Crushed stone filling area; 500. Sidewalk structural layer; Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1

[0038] like Figure 1 The image shows one embodiment of the present invention. A construction method for improving the drainage capacity of a road structure includes the following steps:

[0039] Step 1: First, the old road surface above the original base layer 100 is crushed into a concrete pavement layer 200. The original road curb is filled with crushed stone to form a crushed stone filling area 600. The original road surface is crushed and compacted.

[0040] Step 2: Install drainage geogrid 2 on both sides of the road and extend it to the rubble layer 700 of the sidewalk, then spray emulsified asphalt to form an emulsified asphalt layer 300.

[0041] Step 3: Next, overlap waterproof geotextile 1 on both sides of the road and extend it to the side of the rubble layer of the sidewalk 700.

[0042] Step 4: Water is separated between the upper and lower structural layers and the road structural layer and the original ground on both sides by emulsified asphalt and waterproof geotextile 1. A rapid drainage structure is formed by using concrete pavement crushed stone layer 200, filled crushed stone, drainage geogrid 2, sidewalk rubble, filter layer package 3 and drainage pipe 4.

[0043] Step 5: A new pavement structure layer 400 is formed on the emulsified asphalt layer 300, and a sidewalk structure layer 500 is formed by laying the waterproof geotextile 1 on it. In a further technical solution, both the waterproof geotextile 1 and the drainage geogrid 2 are overlapped on the emulsified asphalt layer 300.

[0044] Example 2

[0045] like Figures 2 to 4 As shown, this is another embodiment of the present invention. Based on embodiment 1, in order to achieve the installation of the filter layer package 3. Figure 4 As shown, the filter layer package 3 includes a bottom frame, on which a support portion 31 is provided. The support portion 31 is adapted to abut against the bottom of the paving stone layer 700. A drainage interface 32 is installed on the side of the bottom frame away from the support portion 31. The drainage interface 32 is connected to the drainage pipe 4.

[0046] The bottom frame also includes a U-shaped plate 33, and a latching piece 34 is provided on the side of the U-shaped plate 33 opposite to the sidewalk rubble layer 700. The latching piece 34 is adapted to be inserted into the sidewalk rubble layer 700.

[0047] The U-shaped plate 33 is provided with two sets of support strips 35 arranged symmetrically. A screen plate 36 is detachably installed between the two sets of support strips 35. A drain outlet 37 is provided at the bottom of the screen plate 36 and is connected to the drain interface 32.

[0048] Example 3

[0049] like Figures 5 to 7 As shown, this is another embodiment of the present invention, based on embodiment 2.

[0050] The drainage geogrid 2 includes at least a first geogrid plate 21 and a second geogrid plate 22. The second geogrid plate 22 is located on the upper side of the rubble layer 700 of the sidewalk, and the first geogrid plate 21 is located on the side of the crushed stone filling area 600. The first geogrid plate 21 and the second geogrid plate 22 are hinged together.

[0051] like Figure 7 As shown, the second grating plate 22 is provided with a drainage channel 221, and the bottom of the second grating plate 22 is provided with an adjustment frame, which is adapted to raise the side located in the crushed stone filling area 600.

[0052] In a further technical solution, the adjusting frame includes a lower plate 222 and a telescopic cylinder. The bottom of the telescopic cylinder is fixedly connected to the lower plate 222. The bottom of the second grid plate 22 is provided with a hinge ear 223. The top of the telescopic cylinder is rotatably connected to the hinge ear 223. The telescopic cylinder includes a fixed cylinder body 224 and a threaded rod 225. The threaded rod 225 is threadedly connected to the fixed cylinder body 224. The top of the threaded rod 225 is connected to the hinge ear 223.

[0053] Before use, the rubble layer 700 of the sidewalk is laid, and the crushed stone filling area 600 is laid on its stepped surface. The second grid plate 22 is installed and compacted, and it is laterally reinforced by the first grid plate 21. The insert strips on the first grid plate 21 are installed and inserted into the crushed stone filling area 600. In order to reduce the accumulation of rainwater at the steps, it is necessary to drain the water at an angle downward. The bottom adjustment frame can achieve this. The side close to the crushed stone filling area 600 is raised to make the drainage channel 221 tilt downward. The end of the drainage channel 221 away from the crushed stone filling area 600 is not closed to achieve the downward drainage. The waterproof geotextile 1 is laid downward to the bottom frame in Example 2 to accumulate rainwater and discharge it.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A construction method for improving the water repellency of a road structure, characterized by, It comprises the following steps: Step 1, first, the old road surface of the original road base (100) is crushed to form a crushed layer (200), and the original road curb position is filled with gravel to form a gravel filling area (600), and the crushed and rolled original road surface is completed; Step 2, the drainage geogrid (2) is overlapped on both sides of the road and extends to the cobblestone layer (700) of the sidewalk, and the emulsified asphalt is sprayed to form an emulsified asphalt layer (300); Step 3, the waterproof geotextile (1) is overlapped on both sides of the road and extends to the side of the cobblestone layer (700) of the sidewalk, Step 4, the emulsified asphalt and the waterproof geotextile (1) form a structure layer, and the water in the road structure layer and the original ground on both sides is separated, and the crushed layer (200), the filled gravel, the drainage geogrid (2), the cobblestone of the sidewalk, the filter layer package (3) and the drainage pipe (4) form a rapid drainage structure; Step 5, the new road surface structure layer (400) is formed on the emulsified asphalt layer (300), and the sidewalk structure layer (500) is formed on the waterproof geotextile (1); The waterproof geotextile (1) and the drainage geogrid (2) are overlapped on the emulsified asphalt layer (300); The filter layer package (3) comprises a bottom frame, a support edge (31) is formed on the bottom frame, the support edge (31) is adapted to abut against the bottom of the cobblestone layer (700), a drainage interface (32) is installed on the side of the bottom frame away from the support edge (31), and the drainage interface (32) is connected with the drainage pipe (4); The bottom frame further comprises a U-shaped plate (33), a bayonet piece (34) is arranged on the side of the U-shaped plate (33) opposite to the cobblestone layer (700), and the bayonet piece (34) is adapted to be inserted into the cobblestone layer (700); The U-shaped plate (33) is provided with two groups of bearing strips (35) symmetrically arranged in the U-shaped plate (33), and a screen plate (36) is detachably installed between the two groups of bearing strips (35), a lower water outlet (37) is arranged at the bottom of the screen plate (36), and the lower water outlet (37) is in communication with the drainage interface (32); The drainage geogrid (2) comprises at least a first grid plate (21) and a second grid plate (22), the second grid plate (22) is located on the upper side of the cobblestone layer (700), and the first grid plate (21) is located on the side of the gravel filling area (600); the first grid plate (21) and the second grid plate (22) are hingedly connected; The second grid plate (22) is provided with a drainage channel (221), and an adjusting frame is arranged at the bottom of the second grid plate (22), and the adjusting frame is adapted to be adjusted on the side of the gravel filling area (600); The adjusting frame comprises a lower plate (222) and a telescopic cylinder, the bottom of the telescopic cylinder is fixedly connected with the lower plate (222), the bottom of the second grid plate (22) is provided with a hinged lug (223), and the top of the telescopic cylinder is rotatably connected with the hinged lug (223). The telescopic cylinder comprises a fixed cylinder body (224) and a threaded rod (225), the threaded rod (225) is threadedly connected with the fixed cylinder body (224), and the top of the threaded rod (225) is connected with the hinged lug (223).

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