Three-dimensional ecological bag slope protection structure
阅读说明：本技术 一种三维生态袋护坡结构 (Three-dimensional ecological bag slope protection structure ) 是由 黄庆为 王文博 蒋英锋 于 2019-01-31 设计创作，主要内容包括：本申请提供了一种三维生态袋护坡结构,该三维生态袋护坡结构包括：设置在边坡的坡脚处的混凝土基础块；以及,设置在混凝土基础块后侧的四向三角土工格栅；以及,固定在每层四向三角土工格栅上方、呈阶梯状排列的生态袋；四向三角土工格栅从边坡的坡脚向边坡的坡顶方向呈梯形设置,四向三角土工格栅的前端设有伸出至坡面外侧的伸出部,伸出部向上包覆在生态袋上且与该生态袋下方的四向三角土工格栅通过连接棒连接,四向三角土工格栅在水平面张拉后通过U型钢筋固定；生态袋内包含：无纺毯,植草格,填充料以及填置在植草格中的植物袋,植物袋填充有土壤和根系发达的植物种子。本申请技术方案可提高边坡的整体稳定性,且达到美化城市景观的效果。(The application provides a three-dimensional ecological bag slope protection structure, this three-dimensional ecological bag slope protection structure includes: the concrete foundation block is arranged at the toe of the side slope; the four-way triangular geogrid is arranged on the rear side of the concrete foundation block; and ecological bags which are fixed above each layer of the four-way triangular geogrids and are arranged in a step shape; the four-way triangular geogrid is arranged in a trapezoid shape from the toe of the side slope to the top of the side slope, the front end of the four-way triangular geogrid is provided with a protruding part protruding to the outer side of the slope surface, the protruding part is upwards coated on the ecological bag and is connected with the four-way triangular geogrid below the ecological bag through a connecting rod, and the four-way triangular geogrid is fixed through a U-shaped steel bar after being stretched in the horizontal plane; the ecological bag contains: the plant bag is filled with soil and plant seeds with developed root systems. The technical scheme of the application can improve the overall stability of the side slope and achieve the effect of beautifying urban landscapes.)
1. The utility model provides a three-dimensional ecological bag bank protection structure which characterized in that includes:
the concrete foundation block is arranged at the toe of the side slope;
the four-way triangular geogrid is arranged on the rear side of the concrete foundation block;
and ecological bags which are fixed above each layer of the four-way triangular geogrids and are arranged in a step shape;
the four-way triangular geogrid is arranged in a trapezoid shape from the toe of the side slope to the top of the side slope, the front end of the four-way triangular geogrid is provided with a protruding part protruding to the outer side of the slope, the protruding part is upwards coated on the ecological bag and is connected with the four-way triangular geogrid below the ecological bag through a connecting rod, and the four-way triangular geogrid is fixed through U-shaped steel bars after being tensioned on the horizontal plane;
the ecological bag comprises: the plant bag is filled with plant seeds with developed soil and root systems.
2. The three-dimensional ecological bag slope protection structure of claim 1, wherein adjacent ecological bags are fixed to each other by using three-dimensional drainage coupling buckles.
3. The three-dimensional ecological bag slope protection structure according to claim 1 or 2, wherein an impermeable film is laid below the capping ecological bag, wherein the capping ecological bag is an ecological bag fixed on the top of the side slope.
4. The three-dimensional ecological bag slope protection structure of claim 1 or 2, wherein the filling material is formed by mixing gravel soil, sand soil and gravel soil.
5. The three-dimensional ecological bag slope protection structure of claim 1 or 2, wherein the concrete foundation block is L-shaped in cross section, and a drainage pipe is arranged between the convex part of the concrete foundation block and the transverse part of the concrete foundation block.
6. The three-dimensional ecological bag slope protection structure of claim 5, wherein a drain pipe is arranged on each layer of slope surface of the side slope.
7. The three-dimensional ecological bag slope protection structure of claim 6, wherein the three-dimensional ecological bag slope protection structure further comprises: and the drainage ditch is arranged in the range of the slope top and the slope foot.
Technical Field
The application belongs to the technical field of side slope support, especially, relate to a three-dimensional ecological bag slope protection structure.
Background
At present, a side slope supporting structure mostly adopts rigid and semi-rigid supporting modes such as concrete lattice beams combined with anchor cables and anchor rods or gravity type retaining walls, so that the construction cost is high, the construction difficulty is high, hollow bulging is easy to cause potential safety hazards under the action of long-term water erosion, and meanwhile, the exposed concrete structure is not in accordance with the requirements of modern cities on urban landscapes.
Therefore, the novel side slope supporting structure is designed, and the practical significance is very obvious.
Disclosure of Invention
The application provides a three-dimensional ecological bag slope protection structure can improve the overall stability of side slope, and reaches the effect of beautifying the urban landscape.
The application is realized like this, a three-dimensional ecological bag bank protection structure includes:
the concrete foundation block is arranged at the toe of the side slope;
the four-way triangular geogrid is arranged on the rear side of the concrete foundation block;
and ecological bags which are fixed above each layer of the four-way triangular geogrids and are arranged in a step shape;
the four-way triangular geogrid is arranged in a trapezoid shape from the toe of the side slope to the top of the side slope, the front end of the four-way triangular geogrid is provided with a protruding part protruding to the outer side of the slope, the protruding part is upwards coated on the ecological bag and is connected with the four-way triangular geogrid below the ecological bag through a connecting rod, and the four-way triangular geogrid is fixed through U-shaped steel bars after being tensioned on the horizontal plane;
the ecological bag comprises: the plant bag is filled with plant seeds with developed soil and root systems.
Optionally, adjacent ecological bags are fixed to each other by a three-dimensional drainage coupling buckle.
Optionally, an impermeable film is laid below the capping ecological bag, wherein the capping ecological bag is an ecological bag fixed on the top of the side slope.
Optionally, the filling material is formed by mixing gravel soil, sand soil and gravel soil.
Optionally, the cross-sectional shape of the concrete foundation block is L-shaped, and a drain pipe is arranged between the raised part of the concrete foundation block and the transverse part of the concrete foundation block.
Optionally, a drain pipe is arranged on each layer of slope surface of the side slope.
Optionally, above-mentioned three-dimensional ecological bag bank protection structure still includes: and the drainage ditch is arranged in the range of the slope top and the slope foot.
It can be seen by above-mentioned technical scheme that, in this application, this technical scheme puts non-woven blanket and grass planting check in the ecological bag, and the grass planting check are used for placing the plant bag, and non-woven blanket and grass planting check are favorable to strengthening ecological bag local strength, and the use of plant bag is favorable to practicing thrift the quantity of fertilizer, seed, can prevent that the seed from being pecked by the bird simultaneously for vegetation growth rate reaches the effect of beautifying the urban landscape. In addition, the four-way triangular geogrids are arranged on each layer of the side slope, the ecological bags are arranged on the four-way triangular geogrids, and meanwhile, the overall stability of the side slope can be improved by arranging reinforcing measures for reverse wrapping of the four-way triangular geogrids on each layer of slope surface.
Drawings
Fig. 1 is a schematic structural view of an ecological slope provided by the present application;
fig. 2 is a partial structural schematic view of the connection with the extension of the upper layer four-way triangular geogrid provided by the present application through a connection rod;
fig. 3 is a schematic view of a partial structure of a four-way triangular geogrid provided by the present application, which is fixed by U-shaped steel bars after being tensioned in a horizontal plane;
fig. 4 is a schematic structural view of the ecological bag provided by the present application;
fig. 5 to 7 are schematic diagrams of ecological bag laying provided by the present application;
fig. 8 is a schematic structural diagram of a concrete foundation block provided by the present application.
Detailed Description
In order to make the purpose, technical solution and beneficial effects of the present application more clear and more obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Please refer to the schematic view of the ecological slope structure shown in fig. 1, the application provides a three-dimensional ecological bag slope protection structure, which includes:
a concrete foundation block 1 arranged at the toe of the side slope;
and a four-way
and
the four-way
As shown in fig. 4, the
Optionally, as shown in fig. 1, the adjacent ecological bags are fixed to each other by using a three-dimensional
Optionally, an impermeable film is laid below the capping ecological bag to prevent surface water from permeating into the side slope, wherein the capping ecological bag is fixed on the top of the side slope.
Optionally, as shown in the schematic diagram of the concrete foundation block shown in fig. 8, the cross-sectional shape of the concrete foundation block is L-shaped, and a drain pipe 13 is disposed between the convex portion 11 of the concrete foundation block and the transverse portion 12 of the concrete foundation block.
Optionally, a drain pipe is arranged on each layer of slope surface of the side slope. The drain pipe is inserted into the slope at the position where the ecological bags are piled up. Specifically, the PVC pipe that length is not less than 0.7 meter can be selected for use to the drain pipe, and the tip parcel of drain pipe is reversed the filter membrane and is prevented soil erosion and water loss.
Optionally, as shown in fig. 1, the three-dimensional ecological bag slope protection structure further includes: and the
The construction process of the three-dimensional ecological bag slope protection structure is explained as follows:
first, measurement lofting
1. Firstly, after a side slope bottom field is leveled, organizing a professional paying-off team, arranging control points on the proposed field according to the coordinates of the side slope and the known coordinates in a red line graph and the interrelation between the coordinates and the known coordinates, respectively and precisely measuring each longitudinal and transverse row according to the dimension and the angle of the connecting line and each axis in the drawing, making a permanent control pile according to the specification, and detecting, checking and calculating the measurement precision of a grid control network. After the axis and the point location are finished, the axis and the point location are checked by relevant units without errors, and the method can be used.
2. And leading the absolute elevation control point to a construction site by the Party A, and making the elevation control point on the construction site. The theodolite, the level gauge and the steel ruler are required to be checked and corrected to be within a specified deviation range before use. When the fixed point is measured, the measurement closing error and the measurement distance error are controlled within the allowable range of the specification.
Secondly, paving the gravel cushion
Before the gravel cushion layer is laid, the base is leveled and watered to be wet, and the virtual paving thickness can be set to 230-240 mm (according to the construction site condition). After paving, spraying water (the water content is preferably 8-12% when the surface of the stone is uniformly wet), and then rolling and leveling by using a road roller.
Construction of concrete foundation block of slope toe
Referring to fig. 8, the raised part of the concrete foundation block is used for fixing the bottom ecological bag, and the PVC pipe can be embedded at the raised part to be used as the water drain pipe. Further, a set of extensions for settling may be provided on the mixing foundation block at every second distance (e.g., 10 meters), and the slots may be filled with asphalt twine. The strength grade of the concrete foundation block is not less than C20 and the total length of the concrete foundation block is greater than the side slope length.
The construction of the concrete foundation block strictly executes the relevant requirements of concrete structure design standard GB50010 and building foundation design standard GB 50007.
Fourthly, preparing the ecological bag
1. The ecological bag needs to have the functions of ultraviolet resistance, acid and alkali resistance, water and soil permeation resistance and the like, meanwhile, the plant roots can freely penetrate and rapidly grow, and the tying belt needs to have the functions of ultraviolet resistance and a one-way self-locking structure. The ecological bag and the tying belt are made of materials which meet the requirements related to technical specification GB 50290 of geosynthetic material application.
2. The plant bags are adopted to wrap plant seeds with developed root systems, fertilizer soil and the like, the specific requirements of plant varieties are selected and matched, and professional technical construction schemes are provided by professional units with garden qualification. The plant bag is made of the same material as the ecological bag.
3. The grass planting grids are cut in advance according to the size of the ecological bag, the plant bags are filled in the grass planting grids one by one, and the filling density of the plant bags is determined according to a professional technical construction scheme. The filling range of the plant bag is the free growth end of the ecological bag, the range is determined by calculation according to factors such as slope gradient, ecological bag size and the like, and the lap joint sections of the upper ecological bag and the lower ecological bag can be not filled to prevent the upper ecological bag from being damaged by plant growth. The grass planting grids of the ecological bag for the slope coping are filled with plant bags.
4. The other parts in the ecological bag are densely filled with filling materials, and the filling materials are gravel soil, sand soil and gravel soil with certain gradation. If the filling material of the bag body is a waterproof material, a sand bag (or a drainage belt) is filled in every 4 square meters of the wall surface to ensure smooth drainage. After filling, tying the tying belt, properly watering and wetting, and sorting and stacking the tying belt on site for later use.
Five, lay four-way triangle geogrid
1. Firstly cutting out the four-way triangular geogrid, laying the geogrid according to a specified position, and reserving the length required by the grid reverse wrap outside the slope surface, wherein the reserved length is not less than 1 m. The four-way triangular geogrids can be made of one-way stress materials, the stress direction of the four-way triangular geogrids is perpendicular to the slope surface, and adjacent four-way triangular geogrids are in butt joint.
2. And filling a certain amount of soil on the four-way triangular geogrid, pulling the four-way triangular geogrid tightly through the other free end of the four-way triangular geogrid, and pressing the filled soil or fixing the filled soil by using a sand bag after pulling the four-way triangular geogrid tightly. Furthermore, the steel bar/wood nail can be temporarily fixed by U-shaped steel bars/wood nails, and the quincunx arrangement horizontal and vertical intervals of the U-shaped steel bars/wood nails are 2 meters.
Six, slope surface piled ecological bag
1. The prepared ecological bags are piled up by the slope toe concrete foundation blocks, the sides of the ecological bag field are parallel to the slope surface and are in butt joint, and the ecological bags on the upper layer and the ecological bags on the lower layer are in staggered overlapping. The butt joint and the overlapping part adopt a three-dimensional drainage connecting buckle to connect the ecological bag monomers into a whole. The ecological bag is placed to be vertical to the slope surface in the length direction to form a pressing top at the step of the slope subsection and the slope top, an impermeable film is laid under the pressing top ecological bag to prevent surface water from permeating the slope, and the width of the impermeable film is not less than 1 meter and is wider than the width of the step of the slope subsection. Watering and pre-settling the ecological bag when the ecological bag is constructed to 2 meters high. The ecological bag stacking construction can refer to the foregoing description, and the details are not repeated here.
2. The material and the environmental protection performance of the three-dimensional drainage connecting buckle are consistent with those of the ecological bag. The upper surface and the lower surface of the three-dimensional drainage connection buckle are provided with pawls with barb characteristics, the pawls are scientifically and reasonably distributed according to mechanical requirements, any two pawls are not on the same shearing damage track, and the mechanical action of each pawl is exerted to the maximum extent. The number of vertical holes which can meet the requirements of plant growth and drainage is not less than 32, the diameter of each hole is more than 15 mm, and the water permeable area of each hole is not less than 45% of the total area of the connection buckle, so that the requirements of multidirectional drainage and water and plant root growth are met. The bidirectional grooves and the vertical holes are combined into a mutually staggered nonlinear convex rib structure, and an internal friction locking structure is formed by the bidirectional grooves and the vertical holes and barb pawls which are scientifically and reasonably distributed, so that the requirements on safety and stability of the structure are met.
3. Every third distance (for example 2 meters) of domatic every interval sets up a PVC drain pipe, and the drain pipe inserts domatic in ecological bag pile department, and length is not less than 0.7 meters, and the anti-filtration membrane of tip parcel prevents soil erosion and water loss.
Seventhly, filling soil, compacting and shaping side slopes
1. And filling soil layer by layer after the ecological bag, and rolling until the next layer of the four-way triangular geogrid is formed, and performing soil filling construction by applying mechanical equipment such as a bucket excavator or a bulldozer with a bucket, so as to ensure that the filled soil is spread on the four-way triangular geogrid in a dumping manner. In order to avoid the damage of the four-way triangular geogrid during construction, a 150-millimeter-thick filling layer is kept between the mechanical crawler and the four-way triangular geogrid.
2. When the filling is paved in layers, the one-time paving thickness cannot be less than 200 mm, when the machine is used for paving, the distance between the paving machine and the slope surface is not less than 2 m, the manual paving and rolling are applied within the range of 2 m from the slope surface, and the compactness reaches 93%. In order to prevent the slope surface from inclining outwards after being subjected to soil pressure during filling, the paving process is carried out from the end part of the tie bar far away from the slope surface to the slope surface, the mechanical operation direction is perpendicular to the tie bar, and the machine is not required to run or stop on the tie bar which is not covered with the filled soil.
3. The layered filling slope is gradually compacted by ramming along with filling, and the slope surface is smoothly finished so as to pile the next layer of ecological bags. The slope construction is suitable for being constructed synchronously with the roadbed.
4. Before a large amount of filling operation, a compaction test section is preferably arranged, and the filling layered paving thickness and the rolling times are determined according to the rolling machinery and the filling property to guide the construction. The soil filling and paving of each layer are completed by timely rolling, the rolling is generally carried out firstly with light weight and then with heavy weight, the rolling operation is carried out from the middle part of the lacing wire, and the rolling operation is carried out towards the tail part in a direction parallel to the slope surface, and then the rolling operation is carried out towards the slope surface (the rolling operation is strictly forbidden in the direction parallel to the lacing wire). When clay is used for filling, drainage and covering measures should be taken in construction in rainy season.
Eight-four direction triangular geogrid reverse wrapping and tensioning
1. The distances between the four-way triangular geogrid reinforced layers are the same and not more than 0.5m, and the distances are multiplied by the height of a single ecological bag. When the four-way triangular geogrid is reversely wrapped with the ecological bag, the reverse-wrapped geogrid is laid on the filling soil, the four-way triangular geogrid is cut, positioned and laid according to requirements (the reverse-wrapped length of the next layer is reserved), and the four-way triangular geogrid and the reverse-wrapped geogrid are connected together through the connecting rods/belts.
2. And hooking the end parts of the four-way triangular geogrids by using tensioning beams to apply tensioning force to the four-way triangular geogrids, tightening the connection between the four-way triangular geogrids and tightening the turn-up grids on the structural surface below the four-way triangular geogrids. And while keeping the four-way triangular geogrid tensioned, filling a layer of filling soil on the four-way triangular geogrid to ensure that the four-way triangular geogrid cannot retract after the tensioning beam is removed, releasing the tensioning force after the filling soil is finished, and removing the tensioning beam.
Ninth, construction of supporting facilities
And (3) constructing drainage ditches within 1m of the slope tops and the slope feet, wherein the cross section of each drainage ditch is not less than 0.5 multiplied by 0.5 m.
It can be seen by above-mentioned technical scheme that, in this application, this technical scheme puts non-woven blanket and grass planting check in the ecological bag, and the grass planting check are used for placing the plant bag, and non-woven blanket and grass planting check are favorable to strengthening ecological bag local strength, and the use of plant bag is favorable to practicing thrift the quantity of fertilizer, seed, can prevent that the seed from being pecked by the bird simultaneously for vegetation growth rate reaches the effect of beautifying the urban landscape. In addition, the four-way triangular geogrids are arranged on each layer of the side slope, the ecological bags are arranged on the four-way triangular geogrids, and meanwhile, the overall stability of the side slope can be improved by arranging reinforcing measures for reverse wrapping of the four-way triangular geogrids on each layer of slope surface.
It should be understood that the above-mentioned embodiments are merely preferred embodiments of the present application, and the product form of the present application is not limited to the illustrations and the embodiments, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
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