CN110984192A - Highway reconstruction excavated slope reinforcing structure and reinforcing method - Google Patents
Highway reconstruction excavated slope reinforcing structure and reinforcing method Download PDFInfo
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- CN110984192A CN110984192A CN201911350804.3A CN201911350804A CN110984192A CN 110984192 A CN110984192 A CN 110984192A CN 201911350804 A CN201911350804 A CN 201911350804A CN 110984192 A CN110984192 A CN 110984192A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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Abstract
The invention relates to a highway reconstruction excavation slope reinforcing structure, which relates to the technical field of road reinforcement and comprises an original slope protection structure, an expanded slope protection structure and a reinforcing structure for connecting the original slope protection structure and the expanded slope protection structure; the original slope protection structure is arranged below the extension road surface and buried; the extension slope protection structure comprises a gabion belt arranged along the road direction, and multiple layers of the gabion belt are arranged upwards along the slope protection surface in a stepped shape; the reinforcing structure comprises a connecting net, one side of the connecting net is connected to the inner side of the original slope protection structure, and the other side of the connecting net is connected to the outer side of the gabion belt; and a filling gravel layer is arranged between the original slope protection structure and the extension slope protection structure. By utilizing the structure and the method, the slope protection has stronger slope protection capability and strength, the width of the slope protection can be reduced, and the floor area of an expanded road is reduced.
Description
Technical Field
The invention relates to the technical field of road reinforcement, in particular to a highway reconstruction side slope excavation reinforcement structure and a highway reconstruction side slope excavation reinforcement method.
Background
The highway belongs to a high-grade highway, and is a highway which can adapt to annual average day and night passenger car traffic volume of more than 25000 vehicles, is specially used for automobile lane-dividing high-speed running and can control the entrance and the exit. Although the names of the highways are different in all countries, the highways are specially designed for more than four lanes (including), two-way separated driving, complete control of entrances and exits and all adoption of three-dimensional crossing.
The road width can be designed by referring to the predicted traffic flow of the area during the design of the road, but with the development of local economy, the popularization of private vehicles and more freight vehicles, the originally designed road width cannot meet the traffic demand of the area, and the road needs to be reconstructed and expanded. In plain areas, the highway has a high road surface, the highway can extend to both sides along with side slopes without extending the roadbed to both sides, the overall width of the highway is increased, the occupied area of the highway is increased, more agricultural arable land or forestry land on both sides of the highway is occupied, and the economic cost and the time cost are increased. In order to reduce the cost, the occupied area of slope protection structures on two sides of a road needs to be reduced, the occupied area of the slope protection is reduced, and the slope protection function can be achieved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a highway reconstruction side slope reinforcing structure and a highway reconstruction side slope reinforcing method, which can ensure that a protection slope has stronger protection slope capacity and strength, can reduce the protection slope width and can reduce the occupied area of an expanded highway.
The above object of the present invention is achieved by the following technical solutions:
a highway reconstruction excavation slope reinforcing structure comprises an original slope protection structure, an extension slope protection structure and a reinforcing structure for connecting the original slope protection structure and the extension slope protection structure;
the original slope protection structure is arranged below the extension road surface and buried;
the extension slope protection structure comprises a gabion belt arranged along the road direction, and multiple layers of the gabion belt are arranged upwards along the slope protection surface in a stepped shape;
the reinforcing structure comprises a connecting net, one side of the connecting net is connected to the inner side of the original slope protection structure, and the other side of the connecting net is connected to the outer side of the gabion belt;
and a filling gravel layer is arranged between the original slope protection structure and the extension slope protection structure.
Through adopting above-mentioned technical scheme, when carrying out highway extension bank protection reinforcement, do not destroy original slope protection structure, utilize original slope protection structure to play the inlayer and consolidate, increase extension slope protection structure in original slope protection structure outside, and combine extension slope protection structure and original slope protection structure into a whole through the connecting network, utilize original slope protection structure to hold extension slope protection structure, make extension slope protection structure can reach bigger inclination, and then reduced extension slope protection structure's horizontal width, on guaranteeing to expand the basis of establishing the road face width, make extension slope protection structure occupy the soil that the road both sides still less, can also guarantee the roadbed intensity of bank protection department simultaneously.
The present invention in a preferred example may be further configured to: the connecting net comprises a plurality of soil nails anchored in the original slope protection structure at the same height, main reinforcements connected to the outer ends of all the soil nails, and tie bars connected to the main reinforcements, wherein the tie bars are connected to the gabion belt.
Through adopting above-mentioned technical scheme, the connecting net adopts the structure of soil nail, main muscle and lacing wire, and the soil nail anchor makes the connecting net more firm with being connected of original road bed in original slope protection structure, and tensile strength is higher, after loading main muscle, main muscle is difficult to by the pulling of gabion area, and the gabion area is held from the inboard that soil nail and main muscle can be more firm, avoids the gabion area to appear great displacement or deformation, guarantees to expand slope protection structure's firmly and stable.
The present invention in a preferred example may be further configured to: the main reinforcement sets up the intermediate position at original slope protection structure, the lacing wire is radial outside distribution, is connected with the gabion area on every layer.
Through adopting above-mentioned technical scheme, main muscle sets up in original slope protection structure's centre, makes multilayer gabion area less to its applied pulling force direction contained angle, and each layer atress direction is close, avoids main muscle drunkenness from top to bottom and leads to soil nail not hard up.
The present invention in a preferred example may be further configured to: the lacing wire runs through to the gabion area outside, every layer be provided with the pin on the outer wall in gabion area, the pin arranges along the length direction in gabion area, the lacing wire is connected on the pin.
Through adopting above-mentioned technical scheme, the lacing wire has increased the force application area of lacing wire to the gabion area through pin from outside pocket gabion area, has avoided the pulling force that the gabion area part was received less and lead to the part to collapse.
The present invention in a preferred example may be further configured to: at least two tie bars are connected to each stop lever, wherein the two tie bars are connected to the two ends of each stop lever.
Through adopting above-mentioned technical scheme, the pulling force that makes the pin both ends receive is balanced, and the pin is more even to the inside thrust that the gabion area was applyed to avoid the local deformation of enlargement slope protection structure.
The present invention in a preferred example may be further configured to: the inclination angle of the extension slope protection structure is larger than that of the original slope protection structure.
Through adopting above-mentioned technical scheme, extension slope protection structure's inclination is greater than original slope protection structure, and under the condition of equal height, extension slope protection structure's horizontal width is littleer to road extension slope protection's area has been reduced.
The present invention in a preferred example may be further configured to: the extension slope protection structure further comprises a covering sand layer arranged on the outer side of the stone cage belt, and green plants are arranged on the covering sand layer.
Through adopting above-mentioned technical scheme, pack the stone cage area through covering the sand and soil layer, make the structure in stone cage area compacter, be difficult to take place to warp, avoided the road to take place to subside in the position in stone cage area, cover the sand and soil layer with green planting, avoid covering sand and soil layer soil erosion and loss and expose the stone cage area.
The present invention in a preferred example may be further configured to: and a trench is arranged on the bottom layer of the extension slope protection structure along the walking direction of the road, the bottom surface of the trench is lower than the ground surface height of two sides of the road, and the stone cage belt at the bottommost layer is arranged in the trench.
Through adopting above-mentioned technical scheme, the lowermost layer stone cage area sets up in the trench, combines together extension slope protection structure and earth's surface better, utilizes the fixed stone cage area of trench, prevents that stone cage area from taking place the displacement to the road outside, makes extension slope protection structure more stable firm.
A method for reinforcing a road reconstruction excavated slope comprises the following steps:
the method comprises the following steps: cleaning the top structure of the original slope protection structure, digging trenches on the periphery of the original slope protection structure and cleaning;
step two: anchoring a row of soil nails at the same height on the original slope protection structure along the road direction, wherein the end parts of the soil nails are exposed out of the original slope protection structure and are provided with lantern rings, and main ribs are arranged in the lantern rings in a penetrating manner;
step three: laying the lowermost gabion belt in the trench, arranging a stop lever on the outer side frame of the gabion belt, leading out a tie bar from a main bar, and connecting the end part of the tie bar to the stop lever;
step four: filling sand and stones between the original slope protection structure and the gabion belt, and tamping;
step five: laying gabion belts upwards layer by layer, leading out tie bars on the main ribs to be connected with the gabion belts, and filling gravel;
step six: after the stone cage belt is laid and the gravel layer is filled, a covering sand layer is laid on the outer side of the stone cage belt, and then the expanded pavement is constructed.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the slope protection reinforcing structure adopts a step-shaped gabion belt structure, steps are formed by utilizing the strength of the gabion belt, and the connection net is arranged on the inner side of the gabion belt to pull the gabion belt inwards, so that the gabion belt is prevented from deviating towards the outer side of a road, the gabion belt is kept stable, and the supporting capacity of the expanded road is stronger; the inclination angle of the ladder-shaped gabion belt in the vertical direction can be set to be larger, so that the horizontal width of the extension slope protection structure is reduced, occupation of forest lands and cultivated lands on two sides of a road is reduced, and road extension cost is saved.
2. According to the invention, the extension slope protection structure is organically combined with the ground surface structures on two sides of the road, so that the transverse compression resistance, deformation resistance and displacement resistance of the extension slope protection structure are improved, and the extension slope protection structure is firmer and more stable.
3. According to the reinforcing method, the original slope protection structure is fully utilized, the new gabion belt structure is combined, and the structural connection is carried out through the connecting net, so that the strength and the stability of the expanded slope protection structure can be guaranteed, the horizontal width and the occupied area of the expanded slope protection structure can be reduced, sand and stones are filled between two layers of slope protection structures and tamped layer by layer, and the newly expanded roadbed structure is firmer and more stable.
Drawings
Fig. 1 is a schematic structural view of the slope reinforcement of the present invention.
Fig. 2 is a schematic view of the distribution structure of the connection net of the present invention.
In the figure, 1, an original slope protection structure, 2, an extension slope protection structure, 21, a gabion belt, 22, a covering sand layer, 23, a trench, 3, a connecting net, 31, soil nails, 32, main ribs, 33, tie bars, 34, stop bars, 4 and a filling sand stone layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the highway reconstruction excavated slope reinforcement structure disclosed by the invention, an original road structure is taken as a basis, the original road protrudes out of the surface of the earth, the original road is expanded and can be widened towards two sides, so that the slope structure is also translated towards two sides, and the reinforcement structure comprises an original slope protection structure 1, an expanded slope protection structure 2 and a reinforcement structure connecting the original slope protection structure 1 and the expanded slope protection structure 2.
Original slope protection structure 1 is the gravel and sand structure, sets up in the below on extension road surface, can not destroy original slope protection structure 1 when the road surface is extended, buries it in extension road surface below.
Enlargement slope protection structure 2 includes the gabion area 21 that sets up along the road trend, gabion area 21 is formed by a plurality of gabion box end to end, it is fixed through the iron wire ligature between the adjacent gabion box, gabion area 21 is the stairstepping and upwards arranges the multilayer along the slope surface of bank protection, every layer of gabion area 21, the gabion area 21 on upper strata is placed in the inboard of lower layer gabion area 21 upper surface, it is fixed also through the iron wire ligature between the lower layer gabion area 21, set up three-layer gabion area 21 in this embodiment. The inclination of the vertical direction of the succession structure that stone cage area 21 is constituteed will be greater than original slope protection structure 1's inclination, and under the condition of equal height, the horizontal width of enlargement slope protection structure 2 is littleer to road enlargement bank protection's area has been reduced.
The trench 23 is arranged on the bottom layer of the extension slope protection structure 2 along the road trend, the bottom surface of the trench is a plane, the height of the bottom surface is lower than the ground surface height of two sides of the road, the depth of the trench 23 is smaller than the height of the gabion belt 21, in the embodiment, the depth of the trench 23 is designed to be one third of the height of the gabion belt 21, the gabion belt 21 on the bottommost layer is laid in the trench 23, and the trench 23 is used for fixing the gabion belt 21 to prevent the gabion belt 21 from displacing towards the outer side of the road, so that the extension slope protection structure 2 is more stable and firm.
A filling gravel layer 4 is arranged between the original slope protection structure 1 and the gabion belt 21, and the filling gravel layer 4 is layered according to the height of the gabion belt 21, filled layer by layer, filled with one layer and tamped with one layer.
The enlargement slope protection structure 2 further comprises a covering sand layer 22 arranged on the outer side of the gabion strip 21, the covering sand layer 22 completely covers the gabion strip 21, and green plants are arranged on the surface of the gabion strip, the green plants in the embodiment can be plants naturally growing in the nature, and slope protection grass can also be artificially cultivated.
The reinforced structure includes connecting net 3 along the road trend setting, and one side of connecting net 3 is connected to original slope protection structure 1's inboard, fixed to the road bed in, and connecting net 3's opposite side is connected to on stone cage area 21 to extend to the outside of stone cage area 21, be connected to together original slope protection structure 1 and enlargement slope protection structure 2.
The connecting net 3 comprises soil nails 31, main ribs 32, tie bars 33 and stop bars 34. The soil nails 31 are high-strength steel bars with the length of one meter, high-strength nuts are welded at the end parts of the high-strength steel bars to serve as lantern rings, the soil nails 21 are anchored at the same height in the original slope protection structure 1, in the embodiment, the soil nails 31 are anchored in a row in the middle of the original slope protection structure 1, and the end parts of the soil nails 31 extend out of the surface of the original slope protection structure 1 to expose the lantern rings; the main reinforcement 32 adopts a steel wire rope, penetrates through the lantern rings of all the soil nails 31, and two ends of the main reinforcement 32 are fixed on the original slope protection structure 1 through anchor rods; a plurality of lacing wires 33 one end ligature is on main muscle 32, is radial distribution, and the other end of lacing wire 33 is connected on three-layer stone cage area 21, and lacing wire 33 passes from between the gap of stone cage box with a net to the stone cage area 21 outside, is provided with pin 34 on the outer wall of every layer of stone cage area 21, and pin 34 arranges along the length direction of stone cage area 21, and lacing wire 33 connects the ligature fixed on pin 34.
Referring to fig. 2, the soil nails 31 are distributed at equal intervals on the original slope protection structure 1, the tie bars 33 are connected to three main bars 32 at each node, the three tie bars 33 at each node are respectively connected to the stop bars 34 on the three-layer gabion belts 21, the stop bars 34 are steel pipes with a length of 5m, at least two tie bars 33 are connected to each stop bar 34, in this embodiment, three tie bars 33 are connected to each stop bar 34, two tie bars 33 are connected to two end positions of each stop bar 34, and another tie bar 33 is connected to the middle position of each stop bar 34.
The invention discloses a method for reinforcing a road reconstruction excavated slope, which comprises the following steps:
the method comprises the following steps: cleaning the top structure of the original slope protection structure, leveling the top structure with a sand layer under a road surface, digging trenches 23 at equal intervals on the periphery of the bottom of the original slope protection structure 1, wherein the width of each trench 23 is greater than the width of each gabion belt 21 by 10cm, and cleaning the bottoms of the trenches 23;
step two: anchoring a row of soil nails 31 at the same height on the original slope protection structure 1 along the road direction, anchoring the soil nails 31 obliquely downwards, exposing the end parts of the soil nails 31 out of the surface of the original slope protection structure 1 and exposing lantern rings, penetrating the main ribs 32 through the lantern rings on the soil nails 31 at one end, sequentially penetrating through the lantern rings on all the soil nails 31 along one direction, and anchoring the two ends of the main ribs 32;
step three: laying the lowermost gabion belt 21 in the trench 23, burying sandy soil on two sides of the gabion belt 23, filling the sandy soil to the ground surface, binding the stop lever 34 on the outer side of the gabion belt 21 by using a steel wire, leading out a tie bar 33 from a main bar 32, and binding the end part of the tie bar 33 to the stop lever 34;
step four: filling sand and stones between the original slope protection structure 1 and the gabion belt 21, and tamping until the height of the sand and stones is the same as that of the gabion belt 21;
step five: laying the gabion belts 21 upwards layer by layer, leading out the tie bars 33 on the main ribs 32 to be connected with the gabion belts 31, filling sand and stones and tamping;
step six: after the stone cage belt 21 and the sand stone layer 4 are paved, a covering sand soil layer 22 is paved on the outer side of the stone cage belt 21, then the expanded pavement is constructed, and the green plants are replanted in the later period.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a side slope reinforced structure is dug in highway transformation which characterized in that: the system comprises an original slope protection structure (1), an extension slope protection structure (2) and a reinforced structure for connecting the original slope protection structure (1) and the extension slope protection structure (2);
the original slope protection structure (1) is arranged below an extension road surface to be buried;
the extension slope protection structure (2) comprises a gabion belt (21) arranged along the road direction, and the gabion belt (21) is in a stepped shape and is distributed in multiple layers upwards along the slope protection surface;
the reinforcing structure comprises a connecting net (3), one side of the connecting net (3) is connected to the inner side of the original slope protection structure (1), and the other side of the connecting net (3) is connected to the outer side of the gabion belt (21);
and a sand-filled gravel layer (4) is arranged between the original slope protection structure (1) and the extension slope protection structure (2).
2. The highway is reformed and is dug slope reinforced structure of claim 1, characterized in that: the connecting net (3) comprises a plurality of soil nails (31) anchored at the same height in the original slope protection structure (1), main ribs (32) connected at the outer ends of all the soil nails (31) and tie bars (33) connected on the main ribs (32), wherein the tie bars (33) are connected on the gabion strip (21).
3. The highway is reformed and is dug slope reinforced structure of claim 2, characterized in that: the main reinforcement (32) is arranged in the middle of the original slope protection structure (1), and the lacing wires (33) are radially distributed outwards and are connected with the gabion strips (21) on each layer.
4. The highway is reformed and is dug slope reinforced structure of claim 3, characterized in that: lacing wire (33) run through to the gabion area (21) outside, every layer be provided with pin (34) on the outer wall of gabion area (21), pin (34) are arranged along the length direction in gabion area (21), lacing wire (33) are connected on pin (34).
5. The highway is reformed and is dug slope reinforced structure of claim 4, characterized in that: at least two lacing wires (33) are connected to each blocking rod (34), wherein the two lacing wires (33) are connected to the positions of two ends of each blocking rod (34).
6. The highway is reformed and is dug slope reinforced structure of claim 1, characterized in that: the inclination angle of the extension slope protection structure (2) is larger than that of the original slope protection structure (1).
7. The highway is reformed and is dug slope reinforced structure of claim 1, characterized in that: the extension slope protection structure (2) further comprises a covering sand layer (22) arranged on the outer side of the stone cage belt (21), and green plants are arranged on the covering sand layer (22).
8. The highway is reformed and is dug slope reinforced structure of claim 1, characterized in that: the bottom layer of the extension slope protection structure (2) is provided with a trench (23) along the road trend, the bottom surface height of the trench (23) is lower than the ground surface height of two sides of the road, and the stone cage belt (21) at the bottommost layer is arranged in the trench (23).
9. A method for reinforcing a road reconstruction excavated slope is characterized by comprising the following steps:
the method comprises the following steps: cleaning the top structure of the original slope protection structure (1), digging a trench (23) on the periphery of the original slope protection structure (1) and cleaning;
step two: anchoring a row of soil nails (31) at the same height on the original slope protection structure (1) along the road direction, wherein the end parts of the soil nails (31) are exposed out of the original slope protection structure (1) and are provided with lantern rings, and main ribs (32) are arranged in the lantern rings in a penetrating way;
step three: laying the lowermost gabion belt (21) in the trench (23), erecting a stop lever (34) outside the gabion belt (21), leading out a tie bar (33) from a main bar (32), and connecting the end part of the tie bar (33) to the stop lever (34);
step four: filling sand and stones between the original slope protection structure (1) and the gabion belt (21) and tamping;
step five: the gabion belts (21) are laid upwards layer by layer, the main ribs (32) are led out to form lacing wires (33) which are connected with the gabion belts (21) and filled with sand and stones;
step six: after the stone cage belt (21) and the sand stone layer (4) are paved, a covering sand soil layer (22) is paved on the outer side of the stone cage belt (21), and then the expanded pavement is constructed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911350804.3A CN110984192B (en) | 2019-12-24 | 2019-12-24 | Highway reconstruction excavated slope reinforcing structure and reinforcing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911350804.3A CN110984192B (en) | 2019-12-24 | 2019-12-24 | Highway reconstruction excavated slope reinforcing structure and reinforcing method |
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| CN110984192A true CN110984192A (en) | 2020-04-10 |
| CN110984192B CN110984192B (en) | 2021-04-30 |
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| CN201911350804.3A Active CN110984192B (en) | 2019-12-24 | 2019-12-24 | Highway reconstruction excavated slope reinforcing structure and reinforcing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709242A (en) * | 2021-01-03 | 2021-04-27 | 秦利琼 | Slope protection system for reconstruction and extension of highway |
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