Overwater road structure in river channel

Abstract

The utility model provides a submersible road structure in a river channel, which belongs to the technical field of road structures and comprises a filler layer, a first waterproof layer and two groups of second waterproof layers. The filler layer is filled with a water-permeable material; the filler layer comprises a flat top part and two slope parts; the first waterproof layer is laid on the flat top part; the two groups of second waterproof layers are in one-to-one correspondence with the two slope parts; the upper end of the second waterproof layer is connected with the end of the first waterproof layer, and the lower end of the second waterproof layer downwards penetrates through the normal water level of the river channel and extends to the bottom of the river channel; the first waterproof layer has a transverse slope inclining from the middle to the slope parts on the two sides; the second waterproof layer has a first gradient inclining from the flat top to the normal water level and further has a second gradient inclining from the normal water level to the bottom of the river channel, and the first gradient is smaller than the second gradient. The flood road in the river channel is high in structural strength, good in waterproofness and capable of effectively resisting flood impact, and the service life of the road is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of road structures, and more specifically relates to a flooded road structure in a river channel. Background Art

[0002] In some areas in northern my country, rainfall is concentrated from July to October, and rainfall is less at other times. Therefore, there is no water or the water level is shallow all year round in the river. In order to connect the traffic on both sides of the river and save construction funds, flooded roads are usually paved in the river. However, when the rainy season comes, a large amount of rainwater will flow into the river, flooding or impacting the roads in the river.

[0003] In the prior art, the roads built in the river channel are not strong enough to withstand flood disasters caused by heavy rain. Therefore, the roads set in the river channel are easily impacted and destroyed, causing inconvenience in traffic. Moreover, rebuilding the destroyed roads requires a lot of manpower and material resources, and requires a lot of construction funds. Utility Model Content

[0004] The utility model aims to provide a flooded road structure in a river channel, aiming to solve the technical problems that the existing road structure in the river channel is unreasonable, cannot resist flood disasters, and causes high road construction costs.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a flooded road structure in a river, comprising:

[0006] A filler layer, which is filled with permeable materials and is used to be laid on the bottom surface of the river channel to form a roadbed; the filler layer includes a flat top and slope portions symmetrically arranged on both sides of the flat top;

[0007] A first waterproof layer, laid on the flat top; and

[0008] Two sets of second waterproof layers correspond to the two slope portions one by one; the upper ends of the second waterproof layers are connected to the ends of the first waterproof layers, and the lower ends of the second waterproof layers pass downward through the normal water level of the river channel and extend to the bottom of the river channel;

[0009] Among them, the first waterproof layer has a lateral slope inclined from the middle to the slope portions on both sides; the second waterproof layer has a first slope inclined from the flat top to the normal water level, and the second waterproof layer also has a second slope inclined from the normal water level to the bottom of the river channel, and the first slope is smaller than the second slope.

[0010] In a possible implementation, the first waterproof layer includes a lime soil base layer and a first concrete layer sequentially laid on the flat top from bottom to top, wherein the lime soil base layer and the first concrete layer both have the transverse slope.

[0011] In some embodiments, the second waterproof layer includes a composite geomembrane layer, a mortar-laid stone slope protection layer and a second concrete layer sequentially laid on the slope portion, wherein the composite geomembrane layer, the mortar-laid stone slope protection layer and the second concrete layer located above the normal water level all have the first slope, and the composite geomembrane layer, the mortar-laid stone slope protection layer and the second concrete layer located below the normal water level all have the second slope.

[0012] Exemplarily, the composite geomembrane layer is laid upward to the flat top and extends to the bottom of the lime soil base layer.

[0013] Exemplarily, the thickness of the mortar-laid stone slope protection layer is higher than the thickness of the lime soil base layer, and the portion of the mortar-laid stone slope protection layer that is higher than the lime soil base layer is laid upward to above the flat top and extends to the top of the lime soil base layer.

[0014] In some embodiments, the thickness of the first concrete layer is greater than the thickness of the second concrete layer.

[0015] In a possible implementation, the lateral slope is between 1.5% and 2.0%, the slope ratio of the first slope is 1:2, and the slope ratio of the second slope is 1:1.

[0016] In a possible implementation, the second waterproof layer extends downward over the bottom of the river channel, and the extension depth is not less than 1 meter.

[0017] In a possible implementation, the water-permeable material includes one or more of gravel, sandstone or crushed stone.

[0018] In some embodiments, the filler layer is filled with a plurality of the water-permeable materials, and the particle sizes of the plurality of the water-permeable materials decrease sequentially from bottom to top.

[0019] Compared with the prior art, the solution shown in the embodiment of the present application provides a first waterproof layer and a second waterproof layer to waterproof the top and both sides of the flooded road, thereby preventing water from entering the interior and causing road damage. At the same time, a permeable material with good permeability is used to fill the road base layer, which can timely guide the water that has seeped into the road downward to the bottom; at the same time, a transverse slope is provided on the first waterproof layer to guide the top water flow while ensuring the road is passable, and divert the water flow from the middle to both sides; further, a first slope and a second slope are provided on the second waterproof layer, which can guide the flood water flow in a targeted manner, prevent the road from being damaged by the flood, improve the road strength, and extend the service life of the road. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a flooded road structure in a river provided by an embodiment of the utility model;

[0022] Figure 2 For attachment Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0023] In the figure:

[0024] 1. Filling layer; 11. Flat top; 12. Slope; 2. First waterproof layer; 21. Lime soil base layer; 22. First concrete layer; 3. Second waterproof layer; 31. Composite geomembrane layer; 32. Mortar-laid rubble slope protection layer; 33. Second concrete layer; 4. Normal water level; 5. River bottom. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0028] Please also read Figure 1 and Figure 2 , the flooded road structure in the river provided by the utility model is now described. The flooded road structure in the river comprises a packing layer 1, a first waterproof layer 2 and two groups of second waterproof layers 3; the packing layer 1 is filled with a permeable material, which is used to be laid on the bottom surface of the river and form a roadbed; the packing layer 1 comprises a flat top 11 and a slope portion 12 symmetrically arranged on both sides of the flat top 11; the first waterproof layer 2 is laid on the flat top 11; the two groups of second waterproof layers 3 correspond to the two slope portions 12 one by one; the upper end of the second waterproof layer 3 is connected to the end of the first waterproof layer 2, and the lower end of the second waterproof layer 3 passes downward through the normal water level 4 of the river and extends to the bottom of the river; wherein the first waterproof layer 2 has a transverse slope inclined from the middle to the slope portions 12 on both sides; the second waterproof layer 3 has a first slope inclined from the flat top 11 to the normal water level 4, and the second waterproof layer 3 also has a second slope inclined from the normal water level 4 to the bottom of the river, and the first slope is smaller than the second slope.

[0029] It should be understood that the water level in the river channel is relatively shallow and has the above-mentioned normal water level 4. When there is more rain, the water level is higher than the normal water level 4. Therefore, with the normal water level 4 as the boundary, the first slope above the normal water level 4 is made smaller than the second slope, so that when the water level rises in the rainy season, the impact of the water flow on the second waterproof layer 3 above the normal water level 4 is delayed, the strength of the road above the normal water level 4 is ensured, and targeted protection is achieved.

[0030] Optionally, the flat top 11 and the slope portion 12 of the packing layer 1 are also correspondingly provided with the above-mentioned slopes; specifically, the flat top 11 has the same lateral slope as the first waterproof layer 2; and with the normal water level 4 as the boundary, the upper part of the slope portion 12 has the same first slope as the second waterproof layer 3, and the lower part of the slope portion 12 has the same second slope as the second waterproof layer 3, so as to ensure that the thickness of the second waterproof layer 3 on the slope portion 12 is uniform, and the thickness of the first waterproof layer 2 on the flat top 11 is uniform.

[0031] Furthermore, an arc-shaped transition structure is provided at the top shoulder where the first waterproof layer 2 and the second waterproof layer 3 meet, so as to guide the water flow.

[0032] Compared with the prior art, the flooded road structure in the river provided by the utility model is waterproofed at the top and both sides of the flooded road by setting a first waterproof layer 2 and a second waterproof layer 3, thereby preventing water from entering the interior and causing road damage. At the same time, a permeable material with good permeability is used to fill the road base layer, which can timely guide the water that has penetrated into the road downward to the bottom; at the same time, a transverse slope is set on the first waterproof layer 2, so as to guide the top water flow while ensuring the road is passable, and divert the water flow from the middle to the two sides; further, a first slope and a second slope are set on the second waterproof layer 3, which can guide the flood water flow in a targeted manner, prevent the road from being damaged by the flood, improve the road strength, and extend the service life of the road.

[0033] See also Figure 1 As a specific embodiment of the first waterproof layer 2 and the second waterproof layer 3, the first waterproof layer 2 includes a lime soil base layer 21 and a first concrete layer 22 sequentially laid on the flat top 11 from bottom to top, wherein the lime soil base layer 21 and the first concrete layer 22 both have a transverse slope.

[0034] The lime soil base layer 21 and the first concrete layer 22 can ensure a stable and durable pavement structure and can also prevent water from entering the roadbed. It should be understood that although the lime soil base layer 21 and the first concrete layer 22 can be waterproof, some water may still penetrate into the roadbed. Therefore, the filler layer 1 in the present application is filled with permeable materials to guide the internal water flow to avoid water accumulation inside and damage the roadbed structure.

[0035] See also Figure 1 In some embodiments, the second waterproof layer 3 includes a composite geomembrane layer 31, a mortar-laid stone slope protection layer 32 and a second concrete layer 33 sequentially laid on the slope portion 12, wherein the composite geomembrane layer 31, the mortar-laid stone slope protection layer 32 and the second concrete layer 33 located above the normal water level 4 all have a first slope, and the composite geomembrane layer 31, the mortar-laid stone slope protection layer 32 and the second concrete layer 33 located below the normal water level 4 all have a second slope.

[0036] Specifically, the composite geomembrane layer 31 is laid on the slope portion 12 of the filler layer 1, the mortar-laid stone slope protection layer 32 is laid on the composite geomembrane layer 31, and the second concrete layer 33 is laid on the mortar-laid stone slope protection layer 32, which can effectively improve the strength of the slope protection on both sides to withstand the heavy level of flood flow and prevent water from entering the roadbed.

[0037] Optionally, the composite geomembrane layer 31 uses two fabrics and one membrane with waterproof and isolation functions to improve waterproofness.

[0038] As another specific embodiment of the first waterproof layer 2 and the second waterproof layer 3, the first waterproof layer 2 includes a lime soil base layer 21 and a first concrete layer 22 sequentially laid on the flat top 11 from bottom to top, wherein the first concrete layer 22 has a transverse slope. The above transverse slope is not set on the lime soil base layer 21, and the transverse slope of the first waterproof layer 2 can also be achieved by ensuring that the first concrete layer 22 on the top has the above transverse slope, so as to reduce the construction difficulty and improve the construction efficiency.

[0039] In addition, the second waterproof layer 3 includes a composite geomembrane layer 31, a mortar-laid rubble slope protection layer 32, and a second concrete layer 33 sequentially laid on the slope portion 12, wherein the second concrete layer 33 located above the normal water level 4 has a first slope, and the second concrete layer 33 located below the normal water level 4 has a second slope. The composite geomembrane layer 31 and the mortar-laid rubble slope protection layer 32 are not provided with the above-mentioned first slope or second slope, and only the slope of the second concrete layer 33 needs to be ensured, which can reduce the construction difficulty and improve the construction efficiency.

[0040] See also Figure 2 Exemplarily, the composite geomembrane layer 31 is laid upward to the flat top 11 and extends to the bottom of the lime soil base layer 21.

[0041] The composite geomembrane layer 31 is extended to the bottom of the lime soil base layer 21 to increase the contact area between the composite geomembrane layer 31 and the lime soil base layer 21, thereby improving the waterproofness of the junction between the two.

[0042] Optionally, the length of the composite geomembrane layer 31 extending into the bottom of the lime soil base layer 21 is not less than 0.2 m.

[0043] See also Figure 2 Exemplarily, the thickness of the mortar-laid rubble slope protection layer 32 is higher than the thickness of the lime soil base layer 21, and the portion of the mortar-laid rubble slope protection layer 32 that is higher than the lime soil base layer 21 is laid upward to above the flat top 11 and extends to the top of the lime soil base layer 21.

[0044] By extending the mortar-laid rubble slope protection layer 32 to the top of the lime soil base layer 21, the mortar-laid rubble slope protection layer 32 is paved to the shoulder and extends to above the flat top 11, thereby increasing the contact area between the mortar-laid rubble slope protection layer 32 and the lime soil base layer 21 and improving the waterproofness of the junction between the two.

[0045] Optionally, the thickness of the mortar-laid rubble slope protection layer 32 is not less than 30 cm and is higher than the thickness of the lime soil base layer 21 .

[0046] See also Figure 1 In some embodiments, the thickness of the first concrete layer 22 is greater than the thickness of the second concrete layer 33 .

[0047] The thickness of the first concrete layer 22 is made higher than that of the second concrete layer 33. On the one hand, the thickness of the waterproof layer on the top of the flat top 11 is increased, thereby ensuring the impact strength of the top; on the other hand, it is used to balance the thickness of the mortar-laid stone slope protection layer 32 above the lime soil base layer 21, thereby ensuring the connection strength between the first waterproof layer 2 and the second waterproof layer 3.

[0048] Optionally, the thickness of the first concrete layer 22 and the second concrete layer 33 are both not less than 10 cm, and the strength grade of the concrete material used is not less than C20.

[0049] See also Figure 1 In some possible embodiments, the lateral slope is between 1.5% and 2.0%, the slope ratio of the first slope is 1:2, and the slope ratio of the second slope is 1:1.

[0050] By controlling the transverse slope between 1.5% and 2.0%, it is possible to avoid the road surface being too steep and affecting traffic. At the same time, it is possible to effectively guide the water flow on the road surface to avoid water accumulation on the top and affecting the strength of the road surface.

[0051] By making the slope above the normal water level 4 to be 1:2 and the slope below the normal water level 4 to be 1:1, the water flow is specifically buffered and protected, thereby improving the waterproofness and impact resistance of the second waterproof layer 3.

[0052] See also Figure 1 In some possible embodiments, the second waterproof layer 3 extends downward over the bottom of the river channel, and the extension depth is not less than 1 meter.

[0053] The supporting strength of the road is improved by extending the second waterproof layer 3 downward to the bottom of the river channel. It should be understood that the sand or silt at the bottom of the river channel will be transferred under the scouring of rainwater and the carrying of water flow, causing the bottom surface of the river channel to drop or rise. Therefore, extending the second waterproof layer 3 downward to a certain depth can avoid exposing the bottom of the second waterproof layer 3 after scouring by silt, which will cause the problem of unstable road support.

[0054] See also Figure 1 In some possible embodiments, the permeable material includes one or more of gravel, sandstone or crushed stone.

[0055] By selecting different types of permeable materials, it is possible to facilitate water infiltration and discharge from the roadbed, thus preventing water accumulation from affecting the strength of the road.

[0056] See also Figure 1 In some embodiments, the packing layer 1 is filled with a variety of water-permeable materials, and the particle sizes of the various water-permeable materials decrease from bottom to top.

[0057] By arranging a variety of permeable materials in sequence according to their particle size, the consistency of the laying strength of each layer of permeable materials can be ensured. At the same time, since rainwater flows from top to bottom and the river channel has a constant water level 4, there is more water flow near the lower layer. By arranging permeable materials with larger particle sizes below, the permeability of the bottom of the roadbed can be improved.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flooded road structure in a river, characterized in that: include: A filler layer (1) filled with a water-permeable material is used for laying on the bottom surface of a river channel to form a roadbed; the filler layer (1) comprises a flat top portion (11) and slope portions (12) symmetrically arranged on both sides of the flat top portion (11); A first waterproof layer (2) is laid on the flat top (11); and Two groups of second waterproof layers (3) correspond one to one to the two slope portions (12); the upper ends of the second waterproof layers (3) are connected to the ends of the first waterproof layers (2), and the lower ends of the second waterproof layers (3) pass downward through the normal water level (4) of the river channel and extend to the bottom of the river channel; The first waterproof layer (2) has a transverse slope inclined from the middle to the sloped portions (12) on both sides; the second waterproof layer (3) has a first slope inclined from the flat top (11) to the normal water level (4); the second waterproof layer (3) also has a second slope inclined from the normal water level (4) to the bottom of the river channel, and the first slope is smaller than the second slope.

2. The in-river flooded road structure according to claim 1, characterized in that: The first waterproof layer (2) comprises a lime soil base layer (21) and a first concrete layer (22) which are laid on the flat top (11) in sequence from bottom to top, wherein the lime soil base layer (21) and the first concrete layer (22) both have the transverse slope.

3. The in-river flooded road structure according to claim 2, characterized in that: The second waterproof layer (3) comprises a composite geomembrane layer (31), a mortar-laid rubble slope protection layer (32) and a second concrete layer (33) which are sequentially laid on the slope portion (12); wherein the composite geomembrane layer (31), the mortar-laid rubble slope protection layer (32) and the second concrete layer (33) located above the normal water level (4) all have the first slope, and the composite geomembrane layer (31), the mortar-laid rubble slope protection layer (32) and the second concrete layer (33) located below the normal water level (4) all have the second slope.

4. The in-river flooded road structure according to claim 3, characterized in that: The composite geomembrane layer (31) is laid upward to the flat top (11) and extends to the bottom of the lime soil base layer (21).

5. The in-river flooded road structure according to claim 4, characterized in that: The thickness of the mortar-laid rubble slope protection layer (32) is higher than the thickness of the lime soil base layer (21), and the portion of the mortar-laid rubble slope protection layer (32) that is higher than the lime soil base layer (21) is laid upward to above the flat top (11) and extends to the top of the lime soil base layer (21).

6. The in-river flooded road structure according to any one of claims 3 to 5, characterized in that: The thickness of the first concrete layer (22) is greater than the thickness of the second concrete layer (33).

7. The in-river flooded road structure according to claim 1, characterized in that: The transverse slope is between 1.5% and 2.0%, the slope ratio of the first slope is 1:2, and the slope ratio of the second slope is 1:

1.

8. The in-river flooded road structure according to claim 1, characterized in that: The second waterproof layer (3) extends downwards over the bottom of the river channel, and the extension depth is not less than 1 meter.

9. The in-river flooded road structure according to claim 1, characterized in that: The packing layer (1) is filled with a plurality of water-permeable materials, and the particle sizes of the plurality of water-permeable materials decrease sequentially from bottom to top.

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