Combined retaining wall structure for river-facing roadbed treatment
By setting up a combined retaining wall structure on the Linhe Roadbed, including the combination of immersed retaining wall and anti-swage buffer components, the problem of water damage in the Linhe Roadbed is solved, and the effect of convenient construction, low construction cost and strong anti-swage capability is achieved.
Patent Information
- Application Number
- CN202421462418.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-24
AI Technical Summary
The existing technology is difficult to effectively solve the problem of water damage in the riverside roadbed, especially in terms of convenient construction operation, low construction cost and strong anti-shrinkage capability.
The combined retaining wall structure is adopted, which includes continuously covering the immersed retaining wall on the water-facing slope and attaching anti-solution buffer components within the water level change range, specifically including the combination of the Gibing mesh retaining wall and the planting blanket.
Through preliminary protection of the immersed retaining wall and the attachment of anti-swish buffer components, the anti-swish buffer capacity is significantly improved, construction operations are simplified, and construction costs are reduced.
Smart Images
Figure CN222716032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a combined retaining wall structure, in particular to a combined retaining wall structure used for riverside roadbed treatment, and belongs to the technical field of design and manufacture of road engineering structures. Background Art
[0002] Professional term explanation
[0003] 1. Roadbed water damage: It is a phenomenon that the roadbed itself, roadbed slope, roadbed drainage facilities, etc. are destroyed due to rainfall and river erosion;
[0004] 2. Vegetation blanket: a blanket formed by seeds, fertilizers, fiber nets, ecological cloth and other materials tightly fitting together;
[0005] 3. Gabion retaining wall: Fill the required stones into the flexible gabion mesh, i.e. the hexagonal rectangular mesh box, so that the whole has a certain porosity and is stacked layer by layer to form a new type of flexible retaining material.
[0006] Roadbed water damage is one of the main manifestations of natural disasters on mountain riverside highways. It is a phenomenon in which the roadbed itself, roadbed slopes, roadbed drainage facilities, etc. are destroyed due to rainfall and river erosion. The occurrence of this disaster directly affects the smooth and safe transportation, and is related to the regional economy and the safety of people’s lives and property.
[0007] Therefore, it is necessary to take into full account the roadbed protection measures of the road section near the river and to study the prevention and control measures of water damage to the roadbed of the highway along the river. Liu Weidong et al. proposed a method for constructing an anti-scouring roadbed, which excavates a reverse step on the slope along the inclination direction of the slope, wherein the reverse step extends from the bottom of the slope to the top of the slope; constructs rib columns at intervals along the flow direction of the river and installs retaining plates on the side of the adjacent rib columns close to the slope to form a rib column retaining wall, so that the rib column retaining wall and the slope form a fill space; a protective foundation is set at the bottom of each rib column, and anchor holes are reserved on the rib column; foam lightweight soil is poured in layers in the fill space at a preset layer height and a reinforcement layer is laid layer by layer, and an anti-seepage layer is laid on the top layer of the foam lightweight soil; anchors are installed through the anchor holes reserved on the rib column; a pavement structure layer is constructed above the fill space to cover the fill space and form the anti-scouring roadbed. This study used lightweight soil as an anti-scouring structure, but lightweight soil has poor anti-floating properties and needs to be wrapped with a structure with better anti-seepage ability. Zhou Mihe et al. proposed an aquatic plant planting blanket and its preparation method. The aquatic plant planting blanket has an inner non-woven fabric layer, a seed layer and an outer non-woven fabric layer from the inside to the outside, forming a blanket structure. This method does not set a nutrient matrix layer necessary for the early growth of plants, and the roots of plants without a fiber layer cannot be fixed after germination. Utility Model Content
[0008] The technical problem to be solved by the utility model is to provide a combined retaining wall structure for riverside roadbed treatment with relatively strong anti-scouring ability, convenient construction operation and relatively low construction cost.
[0009] The technical solution adopted to solve the above-mentioned technical problems is: a combined retaining wall structure for riverside roadbed treatment, including a waterside slope, the combined retaining wall structure also includes at least a submerged retaining wall and an anti-scour buffer component, the submerged retaining wall is continuously covered at a specified height above and below the water surface of the waterside slope, and the anti-scour buffer components are attached to the submerged retaining walls within the water level variation range.
[0010] Furthermore, the waterside slope above the submerged retaining wall is set at a slope of 1:1.5 to 1:2.
[0011] A preferred embodiment of the above scheme is that the submerged retaining wall is a concrete retaining wall.
[0012] Furthermore, the anti-scour buffer assembly includes an anti-scour component group and a buffer protection component group, and the buffer protection component group is arranged on the submerged retaining wall within the water level variation range through the anti-scour component group.
[0013] A preferred embodiment of the above scheme is that the anti-scour component group includes at least two groups of gabion retaining walls, and each group of gabion retaining walls is sequentially attached to the submerged retaining wall within the water level change range along the slope direction of the submerged retaining wall with the cooperation of anchor rods, and the buffer protection component group is respectively arranged on the submerged retaining wall within the water level change range through each group of gabion retaining walls.
[0014] Furthermore, each group of gabion retaining walls includes a flexible gabion and a flexible retaining material filled in the flexible gabion, and the flexible retaining material with a specified porosity is stacked layer by layer in the flexible gabion.
[0015] A preferred embodiment of the above scheme is that the flexible retaining material is hydrolysis-resistant sandstone or hydrolysis-resistant pebbles, and the gaps between the hydrolysis-resistant sandstone or hydrolysis-resistant pebbles arranged in the flexible gabion net are also filled with crushed stones.
[0016] Furthermore, the gap between each group of gabion retaining walls and the corresponding flooded retaining wall is filled with permeable material.
[0017] A preferred embodiment of the above scheme is that the buffer protection component group includes multiple groups of vegetation blankets whose number is equivalent to the number of gabion retaining walls, and each group of vegetation blankets is arranged on the top of the corresponding gabion retaining wall with the cooperation of U-shaped buckles by laying planting soil on the top of the corresponding gabion retaining wall.
[0018] Furthermore, the thickness of the planting soil is 10 to 20 cm, and each group of vegetation blankets includes an upper non-woven fabric layer at the top, a mixed layer of plant fibers and aquatic plant seeds in the upper middle part, a mixed layer of nutrient matrix and sand in the lower middle part, and a lower non-woven fabric layer at the bottom along the thickness direction.
[0019] The beneficial effects of the utility model are as follows: the technical solution provided by the application is based on the existing waterside slope, and the combined retaining wall structure of the application is formed by adding a submerged retaining wall and an anti-scour buffer component, and the submerged retaining wall is continuously coated at a specified height above and below the water surface of the waterside slope, and then the anti-scour buffer component is attached to the submerged retaining wall within the water level change range. In this way, the preliminary protection of the waterside slope is achieved by first coating the submerged retaining wall on the waterside slope, and then the anti-scour buffer component is attached to the submerged retaining wall to reduce or even eliminate the long-term gradual scouring of the submerged retaining wall by water waves, so as to effectively improve the anti-scour ability. At the same time, since the combined retaining wall structure of the application is mainly a submerged retaining wall as a protective structure, and then an anti-scour buffer component is attached to the outside, compared with the existing structure that uses lightweight soil or simply relies on aquatic plant planting blankets to achieve anti-scour, the construction operation is convenient and the construction cost can be effectively reduced. The technical solution of the present application can also enhance the appearance of the shape by further improving the anti-scour buffer component into a structure combining a gabion retaining wall and a vegetation blanket. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the transverse structure of the combined retaining wall structure used for riverside roadbed treatment of the utility model;
[0021] Figure 2 The utility model is a schematic diagram of the three-dimensional structure of the vegetation blanket involved in the combined retaining wall structure used for riverside roadbed treatment.
[0022] Marked in the figure are: waterside slope 1, submerged retaining wall 2, gabion retaining wall 3, anchor rod 4, permeable material 5, vegetation blanket 6, planting soil 7, U-shaped buckle 8, upper non-woven fabric layer 9, plant fiber and aquatic plant seed mixed layer 10, nutrient matrix and sand mixed layer 11, lower non-woven fabric layer 12. DETAILED DESCRIPTION
[0023] like Figure 1 , Figure 2The utility model shows a combined retaining wall structure for riverside roadbed treatment, which has relatively strong anti-scour ability, convenient construction operation and relatively low construction cost. The combined retaining wall structure includes a waterside slope 1, and is characterized in that: the combined retaining wall structure at least includes a submerged retaining wall 2 and an anti-scour buffer component, and the submerged retaining wall 2 is continuously coated at a specified height above and below the water surface of the waterside slope 1, and the anti-scour buffer component is attached to the submerged retaining wall 2 within the water level change range. The technical solution provided by the present application is based on the existing waterside slope, and the combined retaining wall structure of the present application is formed by adding a submerged retaining wall and an anti-scour buffer component, and the submerged retaining wall is continuously coated at a specified height above and below the water surface of the waterside slope, and then the anti-scour buffer component is attached to the submerged retaining wall within the water level change range. In this way, preliminary protection of the waterside slope is achieved by first covering the water-submerged retaining wall on the waterside slope, and then attaching an anti-scour buffer component to the water-submerged retaining wall to reduce or even eliminate the long-term gradual scouring of the water waves on the water-submerged retaining wall, thereby achieving the purpose of effectively improving the anti-scour ability. At the same time, since the combined retaining wall structure of the present application is based on the water-submerged retaining wall as the main protective structure, and then the anti-scour buffer component is attached to the outside, compared with the existing structure that uses lightweight soil or simply relies on aquatic plant planting blankets to achieve anti-scour, the construction operation is convenient and the construction cost can be effectively reduced. As described below, the technical solution of the present application can also enhance the appearance of its shape by further improving the anti-scour buffer component into a structure that combines a gabion retaining wall and a planting blanket.
[0024] Combined with the structural conditions of the existing waterside slope, in order to improve the anti-slip and anti-scour capabilities of the slope itself, the waterside slope 1 above the submerged retaining wall 2 of the present application is set at a slope of 1:1.5 to 1:2, and the submerged retaining wall 2 is a concrete cast retaining wall.
[0025] Correspondingly, as another component improved in the present application, in order to maximize the operability of its construction, maximize its anti-scour ability in the conventional anti-scour process after construction, and improve the ornamental value as a landscape, the anti-scour buffer assembly of the present application includes an anti-scour component group and a buffer protection component group, and the buffer protection component group is arranged on the submerged retaining wall 2 within the water level change range through the anti-scour component group. At this time, the anti-scour component group includes at least two groups of gabion retaining walls 3, each group of gabion retaining walls 3 is sequentially attached to the submerged retaining wall 2 within the water level change range in the direction of the slope of the submerged retaining wall with the cooperation of the anchor rod 4, and the buffer protection component group is arranged on the submerged retaining wall 2 within the water level change range through each group of gabion retaining walls 3. Preferably, each group of gabion retaining walls 3 includes a flexible gabion and a flexible retaining material filled in the flexible gabion, and the flexible retaining material with a specified porosity is stacked layer by layer in the flexible gabion. A more specific structure is that the flexible retaining material is hydrolysis-resistant sandstone or hydrolysis-resistant pebbles, and the gaps between the hydrolysis-resistant sandstone or hydrolysis-resistant pebbles arranged in the flexible gabion net are also filled with crushed stones. In the specific arrangement process, the gaps between each group of gabion net retaining walls 3 and the corresponding flooded retaining walls are also filled with permeable materials 5. At this time, the buffer protection component group includes a number of groups of vegetation blankets 6 that are equivalent to the number of gabion net retaining walls, and each group of vegetation blankets 6 is arranged on the top of the corresponding gabion net retaining wall 3 with the cooperation of U-shaped buckles 8 through the planting soil 7 laid on the top of the corresponding gabion net retaining wall. Its specific structure is that the thickness of the planting soil 7 is 10 to 20 cm, and each group of vegetation blankets 6 includes an upper non-woven fabric layer 9 at the top, a mixed layer 10 of plant fibers and aquatic plant seeds in the upper and middle parts, a mixed layer 11 of nutrient matrix and sand in the lower and middle parts, and a lower non-woven fabric layer 12 at the bottom along the thickness direction.
[0026] In summary, the above technical solution provided by this application also has the following advantages:
[0027] 1. The combined retaining wall structure of the present application is a combined retaining wall method for river embankment anti-scour, which is convenient to construct and operate, low in cost, strong in anti-scour ability, and beautiful in appearance, and has strong feasibility;
[0028] 2. The vegetation blanket structure suitable for the growth of aquatic plants provided by the present application is connected to the center of the gabion net through U-shaped nails, which improves the survival rate of aquatic plants, reduces the difficulty of maintenance, and is well fixed to the gabion net, and has good anti-scouring performance;
[0029] 3. This ecological combined anti-scour retaining wall method is simple to construct, highly feasible and beautiful, providing stronger reference and guidance for the planning, design and construction of green projects.
[0030] The technical solution of the present application is further described below through specific embodiments:
[0031] Embodiment 1
[0032] In view of the technical problems that the water flow speed in some river sections is fast, the roadbed along the river is frequently eroded by rapids, and the foundation is difficult to handle after a water disaster, this application proposes a comprehensive prevention and control measure with strong anti-scouring ability, which can not only prevent erosion and scouring of the slope foot, but also protect the slope surface. The technical solution of this application is to study the riverside roadbed, and propose a mountain riverside roadbed anti-scouring method in combination with a submerged retaining wall, a gabion retaining wall and a vegetation blanket. Its structure includes:
[0033] 1) Set up a submerged retaining wall on the waterside embankment to stabilize the slope foot;
[0034] 2) Install a gabion retaining wall outside the flooded retaining wall;
[0035] 3) Lay 10-20cm thick planting soil on the gabion retaining wall;
[0036] 4) Aquatic plant blankets are laid on the planting soil, and the blankets are fixed to the center of each single net with U-shaped nails;
[0037] 5) The vegetation blanket is divided into four layers from top to bottom, namely, the top non-woven fabric, the mixed layer of plant fiber and aquatic plant seeds, the mixed layer of nutrient matrix and sand, and the bottom non-woven fabric layer;
[0038] 6) The filler in the gabion is made of sandstone or pebbles with a strength grade greater than MU35, the stone particle size is between 15-35cm, the gaps are filled with crushed stone, and the selected stone has the performance of anti-hydrolysis;
[0039] 7) The gap between the submerged retaining wall and the gabion retaining wall is filled with permeable materials;
[0040] 8) The built-in anchor rods of the gabion box are connected to the submerged retaining wall to increase the overall stability of the structure and improve the overall anti-scouring ability of the structure.
[0041] This application fully combines gabion retaining walls, submerged retaining walls and aquatic vegetation blankets, which greatly improves the stability and scour resistance of the riverside roadbed, while increasing the landscape of the riverside roadbed and reducing the problem of water damage to the riverside roadbed. It has unique ecological, landscape, and environmental protection effects, and is operational, safe and efficient.
[0042] The key points of the technical solution of this application are:
[0043] 1) Propose a method for a combined scour-resistant retaining wall for riverside embankments that is easy to construct, low in cost, strong in scour resistance, and beautiful in appearance;
[0044] 2) A structure of an aquatic plant planting blanket that is suitable for the combined structure of gabion nets and submerged retaining walls is proposed.
Claims
1. A combined retaining wall structure for riverside roadbed treatment, comprising a waterside slope (1), characterized in that: The combined retaining wall structure at least comprises a submerged retaining wall (2) and an anti-scour buffer component. The submerged retaining wall (2) is continuously covered at a specified height above and below the water surface of the waterside slope (1), and the anti-scour buffer component is attached to the submerged retaining wall (2) within the water level variation range.
2. The combined retaining wall structure for riverside roadbed treatment according to claim 1 is characterized in that: The waterside slope (1) above the flooded retaining wall (2) is set at a slope of 1:1.5 to 1:
2.
3. The combined retaining wall structure for riverside roadbed treatment according to claim 2 is characterized in that: The submerged retaining wall (2) is a concrete cast retaining wall.
4. The combined retaining wall structure for riverside roadbed treatment according to claim 1, 2 or 3, characterized in that: The anti-scour buffer assembly comprises an anti-scour component group and a buffer protection component group, and the buffer protection component group is arranged on a submerged retaining wall (2) within a water level variation range through the anti-scour component group.
5. The combined retaining wall structure for riverside roadbed treatment according to claim 4 is characterized in that: The anti-scour component group comprises at least two groups of gabion retaining walls (3), each group of gabion retaining walls (3) is sequentially attached to the submerged retaining wall (2) within the water level variation range in the cooperation of anchor rods (4) along the slope direction of the submerged retaining wall, and the buffer protection component group is arranged on the submerged retaining wall (2) within the water level variation range through each group of gabion retaining walls (3).
6. The combined retaining wall structure for riverside roadbed treatment according to claim 5 is characterized in that: Each group of gabion retaining walls (3) comprises a flexible gabion and a flexible retaining material filled in the flexible gabion, and the flexible retaining material with a specified porosity is stacked layer by layer in the flexible gabion.
7. The combined retaining wall structure for riverside roadbed treatment according to claim 6 is characterized in that: The flexible retaining material is hydrolysis-resistant sandstone or hydrolysis-resistant pebbles, and the gaps between the hydrolysis-resistant sandstone or hydrolysis-resistant pebbles arranged in the flexible gabion net are also filled with crushed stones.
8. The combined retaining wall structure for riverside roadbed treatment according to claim 7 is characterized in that: The gap between each group of gabion retaining walls (3) and the corresponding flooded retaining wall is also filled with water-permeable material (5).
9. The combined retaining wall structure for riverside roadbed treatment according to claim 8, characterized in that: The buffer protection component group comprises a plurality of groups of vegetation blankets (6) whose number is equal to the number of gabion retaining walls, and each group of vegetation blankets (6) is arranged on the top of the corresponding gabion retaining wall (3) in cooperation with U-shaped buckles (8) by laying planting soil (7) on the top of the corresponding gabion retaining wall.
10. The combined retaining wall structure for riverside roadbed treatment according to claim 9, characterized in that: The planting soil (7) has a thickness of 10 to 20 cm. Each group of vegetation blankets (6) comprises, along the thickness direction, an upper non-woven fabric layer (9) at the top, a plant fiber and aquatic plant seed mixed layer (10) at the middle and upper part, a nutrient matrix and sand mixed layer (11) at the middle and lower part, and a lower non-woven fabric layer (12) at the bottom.