CN111188347B - High slope retaining wall and construction method thereof - Google Patents
High slope retaining wall and construction method thereof Download PDFInfo
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- CN111188347B CN111188347B CN202010090464.1A CN202010090464A CN111188347B CN 111188347 B CN111188347 B CN 111188347B CN 202010090464 A CN202010090464 A CN 202010090464A CN 111188347 B CN111188347 B CN 111188347B
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a high slope retaining wall and a construction method thereof, wherein the high slope retaining wall comprises a plurality of anchor rods arranged in an array, the anchor rods are of a hollow structure, concrete columns are formed after the outer parts of the anchor rods are poured, boundary beams are formed after the two adjacent concrete columns are poured, a cofferdam is formed after the four adjacent boundary beams are combined, more than one layer of steel wire mesh is laid on the inner side of the cofferdam, a covering layer is formed after concrete slurry is poured into the combined cofferdam, and the steel wire mesh is poured into the covering layer; four connecting pipes are annularly arranged on the outer wall of the anchor rod, and a square inner steel pipe is poured in the side beam; the product can effectively prevent the occurrence of fracture.
Description
Technical Field
The invention relates to a high slope retaining wall and a construction method thereof.
Background
For the side slopes with the soil slope height of more than 20m and less than 100m or the rock slope height of more than 30m and less than 100m, the side slope height factor plays an important role and influence on the side slope stability, the side slope stability analysis and the protection and reinforcement engineering design are designed and calculated individually or specially, and the side slopes are called as high side slopes.
The common disease types of the side slope include 11 types, such as weathering spalling, flowing stone and mud, falling block and falling stone, collapse, dumping, collapse, crumpling, slumping, landslide, dislocation and the like.
Therefore, for the high slopes on both sides of the road, retaining walls need to be built to reinforce the high slopes, so as to prevent the occurrence of hazardous events.
The retaining ring in the prior art comprises a steel wire mesh retaining wall and a concrete retaining wall, the steel wire mesh retaining wall only serves as a simple stone falling prevention wall, and the protective capability of the steel wire mesh retaining wall is the worst. And the concrete retaining wall separates and reinforces the side slope, so that the occurrence of a hazard event can be effectively prevented.
However, we found in actual research that the prior art lattice-like concrete retaining wall often breaks.
Based on the problems, a high slope retaining wall capable of effectively preventing fracture and a construction method thereof are designed.
Disclosure of Invention
The invention aims to provide a high slope retaining wall capable of effectively preventing fracture and a construction method thereof.
In order to solve the problems, the invention adopts the following technical scheme:
a high slope retaining wall comprises a plurality of anchor rods arranged in an array, wherein the anchor rods are of hollow structures, the length of each anchor rod is 120 cm-200 cm, concrete columns are formed after the outer portions of the anchor rods are poured, side beams are formed after the two adjacent concrete columns are poured, the side beams are square beams, a cofferdam is formed after the four adjacent side beams are combined, more than one layer of steel wire mesh is laid on the inner side of the cofferdam, the wire diameter of each steel wire mesh is 3 mm-6 mm, a covering layer is formed after concrete slurry is poured into the combined cofferdam, the laying thickness of the covering layer is 10 cm-20 cm, and the steel wire mesh is poured into the covering layer; the outer wall of the anchor rod is annularly provided with four connecting pipes, the connecting pipes and the anchor rod are fixed by welding, a square inner steel pipe is poured in the boundary beam, the inner steel pipe is made of Q235 common carbon structural steel, the wall thickness of the inner steel pipe is 4-8 mm, and a flange is matched between the inner steel pipe and the connecting pipes; the surface of the inner steel pipe is vertically provided with a grouting hole, and the arrangement of the grouting hole is convenient for concrete slurry to enter; the outer side of the inner steel pipe is provided with four main steel bars, a plurality of square steel bar hoops are fixedly bound among the four main steel bars through iron wires, the main steel bars can realize the shaping of the steel bar hoops, and the steel bar hoops are poured in the side beams; a plurality of grout inlet holes are formed in the part of the anchor rod, which is positioned below the connecting pipe; due to the arrangement of the grout inlet holes, concrete can be better poured into the anchor rod when concrete grout is poured; the upper end of the anchor rod is exposed to the outside of the concrete column, and an end cap is assembled at the end.
Preferably, a sleeve is sleeved on a part of the anchor rod exposed outside the concrete column, a convex edge part is arranged at the upper end of the sleeve, the convex edge part and the sleeve are of an integrated structure, the sleeve and the anchor rod are welded and fixed, and a plurality of hole sites which vertically penetrate through are annularly arranged on the surface of the convex edge part; a positioning cover for positioning large stones is arranged in the formed cofferdam, a first convex edge part is arranged at the bottom edge of the positioning cover, a plurality of first hole sites which vertically penetrate through the surface of the first convex edge part are annularly arranged, and a steel cable is matched between the hole sites and the first hole sites; a first slurry inlet hole is vertically arranged at the top of the positioning cover in a penetrating manner; in field construction, hard stones can be found in the cofferdam, the stones need to be cut and leveled independently in the traditional treatment process, the construction difficulty is high, and after the stones are cut and crushed, stone rolling can occur, so that certain harm is caused. After the structure is adopted, the stone needing to be fixed can be positioned through the positioning cover, then the pulling force is applied to the positioning cover through the steel cables, the positioning cover obtains a downward pressure under the action of the steel cables, the downward pressure effectively acts on the stone, and the stone is limited. At the moment, concrete slurry is poured through the first slurry inlet hole, the positioning cover is completely filled with the concrete slurry, and the positioning cover and the stone are connected into a whole after the concrete slurry is solidified, so that the possibility of collapse is further avoided.
Preferably, the steel cable is obtained by spirally winding more than three strands of steel wires, and the diameter of a single steel wire is 2-4 mm.
Preferably, the positioning cover is made of Q235 common carbon structural steel, and the wall thickness of the positioning cover is 12 mm-20 mm.
Preferably, the inner steel pipe is filled with a mixture, a gap is formed between the mixtures, and concrete slurry is filled in the gap; if the inner steel pipe is hollow, the inner steel pipe is easy to deform, and the mixture is filled in the inner steel pipe and is solidified by pouring concrete slurry, so that the deformation resistance of the inner steel pipe can be greatly improved.
Preferably, the mixture is one or a mixture of more than two of natural rock, pebble and mine waste rock.
A construction method of a high slope retaining wall comprises the following steps:
1) cleaning dangerous stones and floating dust on the slope surface of the high slope;
2) drilling holes at positions of the high slope where anchor rods are to be installed, wherein the drilling depth is larger than the length of the embedded anchor rods, ditching is conducted between two adjacent drilled holes, the ditching depth is 30 cm-120 cm, then the anchor rods are inserted into the drilled holes, and concrete slurry is poured until the concrete slurry is poured to be level with the bottoms of the drilled grooves; sleeving the steel bar hoops on the inner steel pipe one by one, connecting a plurality of steel bar hoops through main steel bars, bundling and fixing through iron wires, then hoisting the inner steel pipe into the ditch, and fixing the inner steel pipe and the connecting pipe through a flange; a stone block is arranged at the bottom of the ditch in a cushioning mode, and the reinforcing steel bar hoops are supported through the stone block and are equidistant to the inner steel pipe; after the operation is finished, a specially-assigned person takes charge of acceptance, and after the acceptance is finished, molds are built on the slope surface and positioned at the two sides of the ditch; after the construction of the mould is finished, pouring concrete from bottom to top; finally, forming a concrete column and a boundary beam which are of a pouring integrated structure; the pouring height of the concrete column is slightly higher than that of the side beam;
3) paving a steel wire mesh in a cofferdam formed between the boundary beam and the concrete column, pouring concrete, and manually leveling after the concrete pouring is finished to obtain a covering layer;
4) after the concrete columns, the boundary beams and the covering layer are finally set; and paving a covering material on the concrete, and spraying water every 12-16 hours for 7-14 days to finish the construction.
Preferably, the covering in step 4) is one or more of wheat straw, gunny sack, woven cloth and plastic film.
The invention has the beneficial effects that: by adopting the invention, a firm reinforcing structure can be formed on a high slope, the inner steel pipe is arranged in the boundary beam, and the inner steel pipe is fixedly connected with the anchor rod serving as an anchor point through the flange, so that the whole slope forms a reliable integral structure, the occurrence of a fracture event can be effectively avoided, and the outer part of each inner steel pipe is provided with a steel reinforcement cage for secondary reinforcement, thereby further increasing the structural strength; the invention can effectively reduce the occurrence of geological disasters such as weathering spalling, flowing stone and mud, falling block and falling stone, collapse, dumping, collapse, crumpling, slipping, slump, landslide, dislocation and the like. Is suitable for popularization and application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a top view of the present invention;
FIG. 2 is an internal schematic view of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is a schematic structural view of the inner steel tube and the anchor rod in cooperation;
FIG. 5 is a schematic structural view of the inner steel pipe and the steel bar hoop in a matched state;
FIG. 6 is a schematic view of the anchor rod construction;
FIG. 7 is a plan view of the present invention in the state of example 2;
FIG. 8 is a cross-sectional view of the cannula;
FIG. 9 is a cross-sectional view of the alignment sleeve;
FIG. 10 is a schematic view showing the installation of the inner steel pipe in the state of example 3.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
Referring to fig. 1 to 6, the high slope retaining wall includes a plurality of anchor rods 1 arranged in an array, the anchor rods 1 are of a hollow structure, the length of each anchor rod 1 is 200cm, the outer diameter of each anchor rod 1 is 20cm, the wall thickness is 2cm, concrete columns 2 are formed after the anchor rods 1 are poured outside, side beams 3 are formed after the concrete columns 1 are poured between every two adjacent concrete columns 1, each side beam 3 is a square beam, a cofferdam is formed after the adjacent four side beams 3 are combined, 1 layer of steel wire mesh 4 is laid on the inner side of the cofferdam, the wire diameter of each steel wire mesh 4 is 4mm, a covering layer 5 is formed after concrete slurry is poured into the combined cofferdam, the laying thickness of the covering layer 5 is 12cm, and the steel wire mesh 4 is poured into the covering layer 5; four connecting pipes 6 are annularly arranged on the outer wall of the anchor rod 1, the connecting pipes 6 and the anchor rod 1 are fixed by welding, a square inner steel pipe 7 is poured in the boundary beam 3, the inner steel pipe 7 is made of Q235 common carbon structural steel, the wall thickness of the inner steel pipe 7 is 8mm, and a flange 8 is matched between the inner steel pipe 7 and the connecting pipes 6; a grouting hole 701 is vertically formed in the surface of the inner steel pipe 7, and the concrete slurry can conveniently enter through the arrangement of the grouting hole 701; the outer side of the inner steel pipe 7 is provided with four main steel bars 9, a plurality of square steel bar hoops 10 are bound and fixed among the four main steel bars 9 through iron wires, the main steel bars 9 can realize the shaping of the steel bar hoops 10, and the steel bar hoops 10 are poured in the side beams 3; a plurality of grout inlet holes 121 are formed at a part of the anchor rod 1 below the connecting pipe 6; the arrangement of the grout inlet hole 121 can enable concrete to be better poured into the anchor rod 1 when concrete grout is poured; the upper end of the anchor rod 1 is exposed to the outside of the concrete column 2, and is fitted with an end cap 131.
Example 2
Referring to fig. 7, 8 and 9, the difference from embodiment 1 is that: the anchor rod 1 is sleeved with a sleeve 11 on the part exposed outside the concrete column 2, the upper end of the sleeve 11 is provided with a convex edge part 12, the convex edge part 12 and the sleeve 11 are of an integrated structure, the sleeve 11 and the anchor rod 1 are welded and fixed, and the surface of the convex edge part 12 is annularly provided with a plurality of vertically-penetrating hole sites 13; a positioning cover 14 for positioning large stones is arranged in the formed cofferdam, a first convex edge part 15 is arranged at the bottom edge of the positioning cover 14, a plurality of first hole sites 16 which vertically penetrate through are annularly arranged on the surface of the first convex edge part 15, and a steel cable 17 is matched between the hole sites 13 and the first hole sites 16; a first slurry inlet hole 18 is vertically arranged at the top of the positioning cover 14 in a penetrating manner; in field construction, hard stones can be found in the cofferdam, the stones need to be cut and leveled independently in the traditional treatment process, the construction difficulty is high, and after the stones are cut and crushed, stone rolling can occur, so that certain harm is caused. After the structure is adopted, the stone needing to be fixed can be positioned through the positioning cover, then the pulling force is applied to the positioning cover through the steel cables, the positioning cover obtains a downward pressure under the action of the steel cables, the downward pressure effectively acts on the stone, and the stone is limited. At the moment, concrete slurry is poured through the first slurry inlet hole, the positioning cover is completely filled with the concrete slurry, and the positioning cover and the stone are connected into a whole after the concrete slurry is solidified, so that the possibility of collapse is further avoided.
The steel cable 17 is obtained by spirally winding 6 strands of steel wires, and the diameter of a single steel wire is 3 mm.
The positioning cover 14 is made of Q235 common carbon structural steel, and the wall thickness of the positioning cover is 12 mm.
Example 3
Referring to fig. 10, the embodiment is different from embodiment 1 in that a mixture 777 is filled in the inner steel pipe 7, a gap is formed between the mixtures 777, and concrete slurry is filled in the gap; if the inner steel pipe is hollow, the inner steel pipe is easy to deform, and the mixture is filled in the inner steel pipe and is solidified by pouring concrete slurry, so that the deformation resistance of the inner steel pipe can be greatly improved.
The mixture 777 is a mixture of natural rock and mine waste rock; the mixing ratio is 1: 1.
the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a high side slope barricade which characterized in that: the steel wire mesh cofferdam comprises a plurality of anchor rods arranged in an array, wherein the anchor rods are of hollow structures, concrete columns are formed after the exterior of the anchor rods are poured, side beams are formed after the two adjacent concrete columns are poured, a cofferdam is formed after the four adjacent side beams are combined, more than one layer of steel wire mesh is laid on the inner side of the cofferdam, a covering layer is formed after concrete slurry is poured into the combined cofferdam, and the steel wire mesh is poured into the covering layer; four connecting pipes are annularly arranged on the outer wall of the anchor rod, a square inner steel pipe is poured in the side beam, and a flange is matched between the inner steel pipe and the connecting pipes; grouting holes are vertically formed in the surface of the inner steel pipe; the outer side of the inner steel pipe is provided with four main steel bars, a plurality of square steel bar hoops are fixedly bound among the four main steel bars through iron wires, and the steel bar hoops are poured in the side beams; a plurality of grout inlet holes are formed in the part of the anchor rod, which is positioned below the connecting pipe; the upper end of the anchor rod is exposed outside the concrete column, and an end cover is assembled at the end of the anchor rod; the anchor rod is sleeved with a sleeve on the part exposed outside the concrete column, the upper end of the sleeve is provided with a convex edge part, the convex edge part and the sleeve are of an integrated structure, the sleeve and the anchor rod are welded and fixed, and a plurality of vertically penetrating hole sites are annularly arranged on the surface of the convex edge part; a positioning cover for positioning large stones is arranged in the formed cofferdam, a first convex edge part is arranged at the bottom edge of the positioning cover, a plurality of first hole sites which vertically penetrate through the surface of the first convex edge part are annularly arranged, and a steel cable is matched between the hole sites and the first hole sites; and a first slurry inlet hole is vertically arranged at the top of the positioning cover in a penetrating manner.
2. The high slope retaining wall according to claim 1, wherein: the steel cable is obtained by spirally winding more than three strands of steel wires, and the diameter of a single steel wire is 2-4 mm.
3. The high slope retaining wall according to claim 1, wherein: the positioning cover is made of Q235 common carbon structural steel, and the wall thickness of the positioning cover is 12 mm-20 mm.
4. The high slope retaining wall according to claim 1, wherein: and filling the inner steel pipe with mixtures, forming gaps among the mixtures, and filling concrete slurry in the gaps.
5. The high slope retaining wall according to claim 4, wherein: the mixture is one or more than two of natural rock, pebble and mine waste rock.
6. A construction method of the high slope retaining wall according to claim 1, characterized in that: the method comprises the following steps:
1) cleaning dangerous stones and floating dust on the slope surface of the high slope;
2) drilling a hole at the position of the high slope where the anchor rod is to be installed, ditching between two adjacent drilled holes, wherein the ditching depth is 30-120 cm, then inserting the anchor rod into the drilled hole, and pouring concrete slurry until the concrete slurry is poured to be flush with the bottom of the drilled groove; sleeving the steel bar hoops on the inner steel pipe one by one, connecting a plurality of steel bar hoops through main steel bars, bundling and fixing through iron wires, then hoisting the inner steel pipe into the ditch, and fixing the inner steel pipe and the connecting pipe through a flange; a stone block is arranged at the bottom of the ditch in a cushioning mode, and the reinforcing steel bar hoops are supported through the stone block and are equidistant to the inner steel pipe; after the operation is finished, a specially-assigned person takes charge of acceptance, and after the acceptance is finished, molds are built on the slope surface and positioned at the two sides of the ditch; after the construction of the mould is finished, pouring concrete from bottom to top; finally, forming a concrete column and a boundary beam which are of a pouring integrated structure; the pouring height of the concrete column is slightly higher than that of the side beam;
3) paving a steel wire mesh in a cofferdam formed between the boundary beam and the concrete column, pouring concrete, and manually leveling after the concrete pouring is finished to obtain a covering layer;
4) after the concrete columns, the boundary beams and the covering layer are finally set; paving a covering material on the concrete, and then spraying water every 12-16 hours for 7-14 days to finish the construction;
5) the stone block to be fixed is positioned through the positioning cover, then the pulling force is applied to the positioning cover through the steel cables, and under the action of the steel cables, the positioning cover obtains a downward force which effectively acts on the stone block and limits the stone block; at the moment, concrete slurry is poured through the first slurry inlet hole, the positioning cover is completely filled with the concrete slurry, and the positioning cover and the stone are connected into a whole after the concrete slurry is solidified.
7. The construction method of the high slope retaining wall according to claim 6, characterized in that: the covering in the step 4) is one or more of wheat straw, gunny bag sheets, woven cloth and plastic films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010090464.1A CN111188347B (en) | 2020-02-13 | 2020-02-13 | High slope retaining wall and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010090464.1A CN111188347B (en) | 2020-02-13 | 2020-02-13 | High slope retaining wall and construction method thereof |
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| CN111188347A CN111188347A (en) | 2020-05-22 |
| CN111188347B true CN111188347B (en) | 2022-01-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113638418B (en) * | 2021-08-25 | 2023-08-04 | 冯新庆 | Continuous pouring die device for engineering construction |
| CN117905091A (en) * | 2024-03-15 | 2024-04-19 | 福州路信公路设计有限公司 | Highway slope protection system, method and structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206941620U (en) * | 2017-07-10 | 2018-01-30 | 深圳百勤建设工程有限公司 | A kind of slope retaining structure |
| CN207934204U (en) * | 2017-11-14 | 2018-10-02 | 云南中林地质勘察设计有限公司 | External connection structure is hung in a kind of beam or column based on BIM |
| CN109024629B (en) * | 2018-08-27 | 2020-07-03 | 广东省城乡规划设计研究院 | Slope supporting method |
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