CN111305152A - Construction method for ecological protection of stepped three-dimensional reinforced abutment conical slope - Google Patents
Construction method for ecological protection of stepped three-dimensional reinforced abutment conical slope Download PDFInfo
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- CN111305152A CN111305152A CN202010216195.9A CN202010216195A CN111305152A CN 111305152 A CN111305152 A CN 111305152A CN 202010216195 A CN202010216195 A CN 202010216195A CN 111305152 A CN111305152 A CN 111305152A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
- E02B3/123—Flexible prefabricated covering elements, e.g. mats, strips mainly consisting of stone, concrete or similar stony material
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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Abstract
The invention relates to a construction method for ecological protection of a stepped three-dimensional reinforced abutment conical slope, which mainly comprises the following construction steps: the method comprises the following steps of foundation A construction, drainage cushion layer construction, first-layer stepped component construction, first-layer backfilling construction, construction for protecting the conical slope below the highest water level and construction for protecting the conical slope above the highest water level. After the foundation A and the drainage cushion layer are constructed, a first-layer step type component and a corner component are installed on the foundation, then a first-layer backfill is paved, and the water-carrying end of the geogrid is reversely wrapped; finishing the protection construction of the conical slope below the highest water level by referring to the steps; and (4) further constructing the conical slope protection above the highest water level in a layered manner, reversely wrapping the two ends of the geogrid, and separating the end close to water from an isolation area by using non-woven fabrics. The conical slope ecological protection construction is convenient and fast, high in stability, good in waterproofness, strong in ecological effect, small in occupied area and outstanding in comprehensive benefit, and overcomes the defects of single ecological protection and engineering protection.
Description
Technical Field
The invention relates to a construction method for ecological protection of a stepped three-dimensional reinforced abutment conical slope, belongs to the field of bridge engineering, and is suitable for abutment conical slope protection construction, in particular to abutment conical slope protection construction of a water-passing bridge.
Background
The protection effect of the soil body of the conical slope influences not only the stability of the conical slope but also the attractiveness of an engineering route due to the special position and the structural form of the conical slope in bridge engineering. Common bridge abutment taper slope diseases such as cone collapse, slope sliding cracks, local falling and the like. When rainwater enters the cone in a large amount, the whole cone is often damaged, the abutment body and the ear back wall are exposed outside, and when a road base is impacted by a vehicle, a part of pressure is balanced due to the absence of a cone slope, and the conditions of crack of the abutment body and fracture of the ear back wall occur. The traditional conical slope protection comprises vegetation protection and engineering protection, wherein the vegetation protection refers to direct watering of grass planting or turf planting on a slope surface, and the engineering protection refers to the utilization of engineering technical means to guarantee the safety and stability of a soil body. However, although the single vegetation protection enhances the ecological effect of the conical slope, the cost is low, the economic benefit is good, but the stabilizing effect on the soil body is poor; the single engineering protection can lead the surface of the slope to be monotonous and lack of gas generation, and has high construction cost and poor economic benefit.
In order to make up for the defects of single vegetation protection and engineering protection, the design of the construction method for the ecological protection of the stepped three-dimensional reinforced abutment slope with convenient construction, high stability, good waterproofness, strong ecological effect and small occupied area is very key. Based on the background, the invention is developed and formed, and obvious economic benefits and social benefits are certainly obtained when the invention is applied to the actual abutment conical slope protection construction.
Disclosure of Invention
The invention aims to: the construction method for the stepped three-dimensional reinforced abutment slope ecological protection is provided aiming at the problems of poor soil body stability, poor protection effect, easiness in collapse, slope slipping, cracks, local falling and the like existing in single vegetation protection and aiming at the defects of high construction cost, poor ecological effect and the like existing in single engineering protection.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the invention relates to a construction method for ecological protection of a stepped three-dimensional reinforced abutment conical slope, which comprises the following steps of:
step one, constructing a foundation A: the method comprises the steps of cleaning the surface of a foundation, excavating a groove of the foundation A according to a measuring and placing position line, driving a toe guard pile into the bottom of the groove, binding reinforcing steel bars in the groove and pouring concrete to form the foundation A.
Step two, drainage cushion layer construction: and excavating a groove of the drainage cushion layer according to the measuring and placing position line, paving a waterproof layer at the bottom and two sides of the groove, and filling graded broken stones on the upper part of the waterproof layer to form the drainage cushion layer.
Step three, constructing a first-layer stepped component: covering a layer of cement mortar on the top of the foundation A, and embedding and pressing the first layer of stepped members and the corner members on the foundation A for masonry and fixation; connecting and fixing the step type component and the corner component through bolts; and filling the filler into the step type component.
Step four, first-layer backfill construction: paving waterproof layers on the surface of the foundation, the foundation B and the side wall of the first-layer step-type component; filling a layer of backfill soil on the waterproof layer in a thin mode, laying a geogrid, horizontally extending the geogrid to the step type component on the side close to water, and reserving a margin on the side opposite to water; filling a first layer of backfill on the geogrid; and then, reversely wrapping the reserved geogrid on the surface of the first-layer backfill soil.
Step five, cone slope protection construction below the highest water level: after the first layer of backfill soil is constructed, filling a layer of backfill soil on the reverse wrapped geogrid; and thirdly, circularly constructing the upper-layer conical slope protection until the conical slope protection construction below the highest water level is finished.
Step six, cone slope protection construction above the highest water level: thinly filling a layer of backfill on the top of the finished conical slope protection, and laying geogrids to enable the geogrids to have margins on two sides; filling backfill on the upper part of the geogrid, and separating an isolation strip on the side close to water by using non-woven fabrics; reversely wrapping the reserved geogrid on the surfaces of the backfill soil and the isolation belt; and (5) according to the steps, circularly constructing upper-layer conical slope protection until the conical slope protection construction above the highest water level is finished.
Step seven, follow-up construction: construction caps and bridge decks and other bridge members.
The invention has the following characteristics and beneficial effects:
(1) the step type components are built below the highest water level to form the conical slope protection feet, so that impact load of water flow can be eliminated to the maximum extent, the stability of slope protection is improved, and the slope protection structure is not easy to slide and damage; compared with the traditional conical slope protection, the method obviously reduces the occupied area and saves the earthwork consumption.
(2) The step type member and the corner member are of reinforced concrete structures, belong to artificial stones, are stable in chemical property, are not prone to corrosion when soaked in river water, and are good in durability.
(3) The broken stone and the sandy soil are used as internal fillers of the step type components and the corner components, so that the nesting and the growth of aquatic organisms are facilitated, the ecological environment is promoted, the soil, the sand and the like on a construction site can be used for filling, and local materials are obtained.
(4) The step type components are spliced at the conical slope circular arc part through the corner components, the problem that the conical slope circular arc part is difficult to protect is solved, construction operation is simple, and practicability is high.
(5) The geogrid is laid in the backfill soil in a reverse-wrapped layered manner, so that the stability of the backfill soil is improved, and the compression deformation is reduced; and the reverse wrapping treatment simplifies the construction process and accelerates the construction speed, the geogrid is separated from the abutment, the safety of the abutment is improved, and the influence of the geogrid on the foundation settlement is reduced.
(6) The step-shaped conical slope protection converts slope plant planting into plane plant planting, and changes original single grass planting into a three-dimensional ecological plant group combining arbor, shrub and grass, so that the slope protection engineering soil is stable; the problem that the slope soil is easy to run off is solved by arranging the end isolation belt; and the rain can be intercepted, the water can be stored and the soil moisture can be preserved, the irrigation water can be saved, the dry branches and fallen leaves can be reserved, and the later-period management and protection cost can be reduced.
Drawings
FIG. 1 is a longitudinal section view of ecological protection of a stepped three-dimensional reinforced abutment conical slope;
FIG. 2 is a cross-sectional view A-A of ecological protection of a stepped three-dimensional reinforced abutment conical slope;
FIG. 3 is a cross-sectional view B-B of ecological protection of a stepped three-dimensional reinforced abutment conical slope;
FIG. 4 is a detail view of the stepped member;
FIG. 5 is a detail view of the corner member;
FIG. 6 is a schematic view of foundation A construction;
FIG. 7 is a schematic view of a drainage mat construction;
FIG. 8 is a schematic construction view of a first-floor stepped member;
FIG. 9 is a schematic illustration of the first layer of backfill construction;
FIG. 10 is a schematic view of protection construction of a conical slope below the highest water level;
FIG. 11 is a schematic view of protection construction of a conical slope above the highest water level;
fig. 12 is a subsequent construction diagram.
In the figure: 1. geogrid, 2. backfill soil, 3. step type components, 301. groove A, 302. protrusion A, 303. reserved hole A, 304. bolt hole A, 4. corner components, 401. groove B, 402. protrusion B, 403. reserved hole B, 404. bolt hole B, 5. filler, 6. foundation A, 7. foot protection pile, 8. waterproof layer, 9. foundation, 10. highest water level, 11. bolt, 12. abutment cap, 13. abutment body, 14. foundation B, 15. abutment pile foundation, 16. abutment back, 17. bridge floor, 18. road surface, 19. drainage cushion layer, 20. non-woven fabric, 21. isolation strip.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, and the following examples are illustrative of the present invention and are not limited to the following examples.
Referring to the attached drawing 1, the ecological protection of the stepped three-dimensional reinforced abutment conical slope comprises backfill 2, a geogrid 1, a foundation A6, a stepped member 3, a corner member 4 and a drainage cushion layer 19; the backfill soil 2 is filled on one side of the platform body 13 close to the water surface in a step shape, the inner part of the backfill soil 2 is paved with geogrids 1 in layers, the geogrids 1 adopt composite fiber nets or galvanized steel bar nets, and the layered paving height is 500 mm; laying a waterproof layer 8 on the contact part of the backfill 2 with the foundation 9 and the foundation B14, wherein the waterproof layer 8 is made of waterproof geotextile; the bottom of the step member 3 is snapped with the base A6 through the projection A302; the top surface of the step type component 3 is higher than the highest water level 10; the foundation A6 is buried in the foundation 9, and the bottom of the foundation A6 is used as a foot protection pile 7 and the top of the foundation A is laid with a step type member 3; the step members 3 are in snap-in connection with the protrusions A302 through the grooves A301 in the vertical direction; filling materials 5 are filled in the step type component 3, and broken stones and sandy soil (preferentially adopting broken stones and sandy soil on a construction site) are adopted as the filling materials 5; a waterproof layer 8 is laid on the contact part of the step-type component 3 and the backfill 2; the drainage cushion layer 19 is arranged in the foundation 9 next to the foundation A6, waterproof layers 8 are laid on the bottom and two sides of the drainage cushion layer 19, and graded broken stones are adopted by the drainage cushion layer 19.
As shown in fig. 2, one end of the geogrid 1 below the highest water level 10 is in a reverse-wrapped shape, the reverse-wrapped end is close to the platform body 13, and the other end horizontally extends to the step-type member 3; the step components 3 are connected and fixed in the horizontal direction through bolts 11; the corner component 4 is arranged at the arc part of the conical slope and is connected and fixed with the step components 3 at two sides through bolts.
As shown in fig. 3, the two ends of the geogrid 1 above the highest water level 10 are in a reverse bag shape, one end of the geogrid is close to the platform body 13, and an isolation strip 21 is filled inside the other end of the geogrid; the bottom and two sides of the isolation belt 21 are wrapped with non-woven fabrics 20.
As shown in FIG. 4, the stepped member 3 is provided with a groove A301 at the top, a protrusion A302 at the bottom, a preformed hole A303 at the center and four walls, bolt holes A302 at two ends, and is a reinforced concrete prefabricated member with a total length of 1400mm, a width of 700mm, a height of 500mm, a wall thickness of 80mm, and a diameter of 300mm of the preformed hole A303.
As shown in fig. 5, the top of the corner member 4 is provided with a groove B401, the bottom is provided with a protrusion B402, the center is provided with a prepared hole B403, the end is provided with a bolt hole B402, the corner member 4 is a reinforced concrete prefabricated member, the height is 500mm, the cross section size is designed, and the diameter of the prepared hole B403 is 300 mm.
As shown in fig. 6, the surface of the foundation 9 is cleaned, a groove of the foundation a6 is excavated according to the measuring and placing position line, a toe guard pile 7 is driven into the bottom of the groove, and the foundation a6 is formed by binding steel bars in the groove and pouring concrete.
As shown in fig. 7, a groove of the drainage mat 19 is excavated according to the measuring and placing position line, the waterproof layers 8 are laid on the bottom and both sides of the groove, and graded broken stones are filled on the upper portion of the waterproof layers 8 to form the drainage mat 19.
As shown in fig. 8, a layer of cement mortar is coated on the top of the foundation a6, and the first layer of step type members 3 and the corner members 4 are embedded and pressed on the foundation a6 for masonry and fixation; connecting and fixing the step type component 3 and the corner component 4 through bolts; the step member 3 is filled with a filler 5.
As shown in fig. 9, a waterproof layer 8 is laid on the surface of the foundation 9, the foundation B14 and the side wall of the first-layer step member 3; a layer of backfill 2 is thinly filled on the waterproof layer 8, and the geogrid 1 is laid, so that the geogrid 1 horizontally extends to the step-type component 3 on the side close to water, and a margin is reserved on the side opposite to water; filling a first layer of backfill 2 on the geogrid 1; and then, reversely wrapping the reserved geogrid 1 on the surface of the first layer of backfill soil 2.
As shown in fig. 10, after the first layer of backfill 2 is constructed, a layer of backfill 2 is filled on the turned geogrid 1; and (5) performing upper-layer conical slope protection in a recycling construction until the conical slope protection construction below the highest water level is finished.
As shown in fig. 11, a layer of backfill 2 is thinly filled at the top of the finished conical slope protection, and geogrids 1 are laid, so that the geogrids 1 are left with margins on two sides; filling backfill 2 on the upper part of the geogrid 1, and separating an isolation strip 21 on the side close to water by using non-woven fabrics 20; reversely wrapping the reserved geogrid 1 on the surfaces of the backfill soil 2 and the isolation belt 21; and (5) according to the steps, circularly constructing upper-layer conical slope protection until the conical slope protection construction above the highest water level is finished.
As shown in fig. 12, bridge members such as a cap 12 and a deck 17 are constructed.
The step type three-dimensional reinforced abutment conical slope ecological protection construction steps comprise:
step one, constructing a foundation A: the surface of the foundation 9 is cleaned, a groove of the foundation A6 is excavated according to the measuring and placing position line, a toe guard pile 7 is driven into the bottom of the groove, and reinforcing steel bars are bound in the groove and concrete is poured to form the foundation A6.
Step two, drainage cushion layer construction: and excavating a groove of the drainage cushion layer 19 according to the measuring and placing position line, paving the waterproof layer 8 at the bottom and two sides of the groove, and filling graded broken stones on the upper part of the waterproof layer 8 to form the drainage cushion layer 19.
Step three, constructing a first-layer stepped component: covering a layer of cement mortar on the top of the foundation A6, and embedding and pressing the first layer of step type members 3 and the corner members 4 on the foundation A6 for masonry and fixation; connecting and fixing the step type component 3 and the corner component 4 through bolts; the step member 3 is filled with a filler 5.
Step four, first-layer backfill construction: paving a waterproof layer 8 on the surface of the foundation 9, the foundation B14 and the side wall of the first-layer step-type component 3; a layer of backfill 2 is thinly filled on the waterproof layer 8, and the geogrid 1 is laid, so that the geogrid 1 horizontally extends to the step-type component 3 on the side close to water, and a margin is reserved on the side opposite to water; filling a first layer of backfill 2 on the geogrid 1; and then, reversely wrapping the reserved geogrid 1 on the surface of the first layer of backfill soil 2.
Step five, cone slope protection construction below the highest water level: after the first layer of backfill 2 is constructed, filling a layer of backfill 2 on the turned geogrid 1; and thirdly, circularly constructing the upper-layer conical slope protection until the conical slope protection construction below the highest water level is finished.
Step six, cone slope protection construction above the highest water level: thinly filling a layer of backfill 2 at the top of the finished conical slope protection, and laying a geogrid 1, so that the geogrid 1 has margins on two sides; filling backfill 2 on the upper part of the geogrid 1, and separating an isolation strip 21 on the side close to water by using non-woven fabrics 20; reversely wrapping the reserved geogrid 1 on the surfaces of the backfill soil 2 and the isolation belt 21; and (5) according to the steps, circularly constructing upper-layer conical slope protection until the conical slope protection construction above the highest water level is finished.
Step seven, follow-up construction: bridge members such as a construction cap 12 and a bridge deck 17.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (1)
1. The construction method for ecological protection of the stepped three-dimensional reinforced abutment conical slope is characterized by comprising the following steps of:
step one, constructing a foundation A: cleaning the surface of a foundation (9), excavating a groove of a foundation A (6) according to a measuring and placing position line, driving a toe guard pile (7) into the bottom of the groove, binding reinforcing steel bars in the groove and pouring concrete to form the foundation A (6);
step two, drainage cushion layer construction: excavating a groove of the drainage cushion layer (19) according to the measuring and placing position line, paving waterproof layers (8) at the bottom and two sides of the groove, and filling graded broken stones on the upper part of the waterproof layers (8) to form the drainage cushion layer (19);
step three, constructing a first-layer stepped component: covering a layer of cement mortar on the top of the foundation A (6), and embedding and pressing the first layer of stepped members (3) and the corner members (4) on the foundation A (6) for masonry and fixation; the step type component (3) and the corner component (4) are connected and fixed through bolts; filling a filler (5) into the step-type component (3);
step four, first-layer backfill construction: paving waterproof layers (8) on the surface of the foundation (9), the foundation B (14) and the side wall of the first-layer step-type component (3); a layer of backfill soil (2) is thinly filled on the waterproof layer (8), and a geogrid (1) is laid, so that the geogrid (1) horizontally extends to the step-type component (3) on the side close to water, and a margin is reserved on the side back to water; filling a first layer of backfill (2) on the geogrid (1); then reversely wrapping the reserved geogrid (1) on the surface of the first layer of backfill soil (2);
step five, cone slope protection construction below the highest water level: after the first layer of backfill (2) is constructed, filling a layer of backfill (2) on the reverse wrapped geogrid (1); and then, referring to the third step to the fourth step, circularly constructing upper-layer conical slope protection until the conical slope protection construction below the highest water level is finished;
step six, cone slope protection construction above the highest water level: thinly filling a layer of backfill (2) at the top of the finished conical slope protection, and laying a geogrid (1), so that the geogrid (1) has margins on two sides; backfilling soil (2) is filled at the upper part of the geogrid (1), and a non-woven fabric (20) is used for separating an isolation belt (21) at the side close to water; reversely wrapping the reserved geogrid (1) on the surfaces of the backfill soil (2) and the isolation belt (21); according to the steps, upper-layer conical slope protection is constructed in a circulating mode until the conical slope protection construction above the highest water level is finished;
step seven, follow-up construction: construction caps (12), a bridge deck (17) and other bridge members.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010216195.9A CN111305152A (en) | 2020-03-25 | 2020-03-25 | Construction method for ecological protection of stepped three-dimensional reinforced abutment conical slope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010216195.9A CN111305152A (en) | 2020-03-25 | 2020-03-25 | Construction method for ecological protection of stepped three-dimensional reinforced abutment conical slope |
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| CN111305152A true CN111305152A (en) | 2020-06-19 |
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| CN202010216195.9A Withdrawn CN111305152A (en) | 2020-03-25 | 2020-03-25 | Construction method for ecological protection of stepped three-dimensional reinforced abutment conical slope |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032778A (en) * | 2021-11-25 | 2022-02-11 | 武汉一冶建筑安装工程有限责任公司 | Anti-settling and anti-sliding bridge conical slope construction method |
| CN115262592A (en) * | 2022-08-12 | 2022-11-01 | 中国一冶集团有限公司 | Arch bridge conical slope reinforced structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203755243U (en) * | 2014-03-19 | 2014-08-06 | 长沙有色冶金设计研究院有限公司 | Protection structure of bridgehead conical slopes |
| CN107354911A (en) * | 2017-08-31 | 2017-11-17 | 郑州大学 | A kind of ecological flexible geogrid reinforcement Wharf Construction method |
| CN107558480A (en) * | 2017-07-07 | 2018-01-09 | 江苏省镇江市路桥工程总公司 | The construction method of the reinforced ecological slope protection structure of roadbed three-dimensional water discharge |
| CN109750682A (en) * | 2019-03-20 | 2019-05-14 | 杭州昂创科技有限公司 | The hard and soft combination combined type ecological slope protection construction method of foam concrete roadbed side slope |
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2020
- 2020-03-25 CN CN202010216195.9A patent/CN111305152A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203755243U (en) * | 2014-03-19 | 2014-08-06 | 长沙有色冶金设计研究院有限公司 | Protection structure of bridgehead conical slopes |
| CN107558480A (en) * | 2017-07-07 | 2018-01-09 | 江苏省镇江市路桥工程总公司 | The construction method of the reinforced ecological slope protection structure of roadbed three-dimensional water discharge |
| CN107354911A (en) * | 2017-08-31 | 2017-11-17 | 郑州大学 | A kind of ecological flexible geogrid reinforcement Wharf Construction method |
| CN109750682A (en) * | 2019-03-20 | 2019-05-14 | 杭州昂创科技有限公司 | The hard and soft combination combined type ecological slope protection construction method of foam concrete roadbed side slope |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032778A (en) * | 2021-11-25 | 2022-02-11 | 武汉一冶建筑安装工程有限责任公司 | Anti-settling and anti-sliding bridge conical slope construction method |
| CN115262592A (en) * | 2022-08-12 | 2022-11-01 | 中国一冶集团有限公司 | Arch bridge conical slope reinforced structure |
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Application publication date: 20200619 |