CN111851407A - Construction method of gabion retaining wall - Google Patents
Construction method of gabion retaining wall Download PDFInfo
- Publication number
- CN111851407A CN111851407A CN202010544799.6A CN202010544799A CN111851407A CN 111851407 A CN111851407 A CN 111851407A CN 202010544799 A CN202010544799 A CN 202010544799A CN 111851407 A CN111851407 A CN 111851407A
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- Prior art keywords
- gabion
- parts
- foundation pit
- retaining wall
- vertical groove
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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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/28—Polysaccharides or derivatives thereof
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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
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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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
- E02D29/0258—Retaining or protecting walls characterised by constructional features
Abstract
The invention discloses a construction method of a gabion retaining wall. The construction method of the gabion retaining wall comprises the following steps of 1, construction preparation, marking a gabion retaining wall foundation excavation line and a water retaining assembly foundation excavation line on a riverway side slope by adopting a white marking line according to a design drawing; step 2, erecting a water retaining assembly; step 3, excavating a gabion retaining wall foundation pit; step 4, assembling the gabion; step 5, erecting a gabion template; step 6, placing the assembled gabion in a gabion formwork, and filling the gabion with stones; step 7, after the cover plate is installed, the frame pipe is removed, and the wood formwork is moved to the position of another gabion for installation; step 8, repeating the steps 5-7; and 9, removing the water retaining assembly. Through pouring the concrete basement 0.5m deep at gabion retaining wall foundation ditch bottom, because concrete basement structure is firm, be difficult for taking place to subside, can promote the durability of gabion retaining wall, it is excellent to keep off the soil effect.
Description
Technical Field
The invention relates to the technical field of water environment treatment, in particular to a construction method of a gabion retaining wall.
Background
In recent years, in the river course treatment process, along with people to ecological environmental protection, landscape, the degree of attention of building aesthetic feeling is higher and higher, traditional dry masonry, the river course shore protection of concrete prefabricated block, because waterproof, the normal ecological environment in river course has been blocked, the demand that ecological river control is more and more can not be adapted to, gabion barricade is a box structure by filling rubble or cobble in the two hexagonal metal net, because its porous structure and outlying box structure, make gabion barricade possess very strong water permeability, wholeness and anti-storm, be particularly suitable for administering the riverbed, prevent the mud-rock flow, prevent the needs of landslide.
The construction method of the known gabion retaining wall comprises the following steps: (1) purchasing raw materials; (2) manufacturing a steel plate groove and a shoulder pole beam; (3) assembling the gabion cage; (4) filling stone materials; (5) excavating a foundation trench, and integrally hoisting the gabion foundation in place; (6) checking and accepting, entering the next step when the foundation is qualified, and hoisting the gabion foundation in place again when the foundation is unqualified; (7) and backfilling earthwork.
In the prior published patent technology, for example, the invention patent with chinese patent publication No. CN110792063A discloses an application of a novel gabion for river channel foundation construction with high river channel water level and difficult drainage, and the specific construction process comprises the following steps: purchasing raw materials; manufacturing a steel plate groove and a shoulder pole beam; assembling the gabion cage; filling stone materials; excavating a foundation trench, and integrally hoisting the gabion foundation in place; checking and accepting, entering the next step when the foundation is qualified, and hoisting the gabion foundation in place again when the foundation is unqualified; backfilling earthwork; and (5) constructing the next section. The beneficial effects of the invention are as follows: the edge plates of the gabion are protected and supported by the steel plate grooves, so that the gabion foundation has integral rigidity, and the deformation of the gabion is effectively controlled; the construction process is simple to operate, the cage filling speed is high, and the construction speed is high; carry out the gabion and fill at the river course bank, avoided constructor underwater construction, the work progress receives the water level influence less.
The prior art has at least the following problems:
in the prior art, due to long-term water flow scouring, the stones in the gabion retaining wall on the lower layer and the gabion are continuously rubbed to cause continuous abrasion of the gabion, so that the gabion is denatured, the gabion retaining wall is easily collapsed, and the stability of the gabion retaining wall is affected.
Aiming at the problems that in the prior art, due to long-term water flow scouring, the stones in the gabion retaining wall at the lower layer and the gabion are continuously rubbed to cause continuous abrasion of the gabion, so that the gabion is denatured, the gabion retaining wall is easily collapsed, and the stability of the gabion retaining wall is affected, an effective solution is not provided at present.
Disclosure of Invention
The invention aims to provide a construction method of a gabion retaining wall, aiming at the defects of the prior art.
The construction method of the gabion retaining wall comprises the following steps:
Step 2, erecting a water retaining assembly for protecting water resources and construction safety;
step 3, excavating a gabion retaining wall foundation pit;
step 4, manufacturing and assembling the gabion; step 5, erecting a gabion template for protecting the gabion from deforming in the stone filling process, and erecting the gabion template in the gabion retaining wall foundation pit, wherein the gabion template comprises a wood template and a frame pipe, and the wood template is fixed by the frame pipe;
step 6, placing the assembled gabion in a gabion formwork, filling the gabion with stones, wherein the grain size of the stones is larger than 200mm, the weight of a single stone block is not smaller than 5kg, the stones are higher than the cover plate by 5cm during filling, connecting the cover plate with the end plate, the partition plate and the side plate when the filling of the stones is finished, and laying 250g/m2 geotextile on the backwater side of the gabion;
step 7, after the cover plate is installed, the frame pipe is removed, the wood formwork is moved to the position of another gabion for installation, and the height difference of any two adjacent gabions is smaller than 35 cm;
step 8, repeating the steps 5-7, sequentially installing gabion gabions on other layers from bottom to top, and twisting the gabion gabions on the upper layer and the lower layer by adopting binding steel wires;
and 9, removing the water retaining assembly.
Further, in step 2, the step of setting up the water blocking assembly comprises the following steps:
2.1, digging a water retaining component foundation pit at the position, higher than the water level surface, of the right end of the river side slope by using a backhoe excavator along a water retaining component foundation digging line, wherein the bottom of the water retaining component foundation pit is a horizontal plane, and the right end of the water retaining component foundation pit is 1m away from the water level surface;
2.2, digging a square groove at the right end of the water retaining assembly foundation pit by using a pick, wherein the width of the square groove is 20cm, and the depth of the square groove is 1 m;
step 2.3, digging a vertical groove at the left end of the water retaining assembly foundation pit by using a pick, wherein the width of the vertical groove is 20cm, and the depth of the vertical groove is 1.5 m;
step 2.4, erecting a square groove steel reinforcement cage template in the square groove, wherein the top end of the square groove steel reinforcement cage template is exposed out of the right end of the water retaining component foundation pit;
step 2.5, vertically placing the square groove steel reinforcement cage into a square groove steel reinforcement cage template, grouting the square groove steel reinforcement cage template with the diameter of a steel bar of phi 6, adopting C25 concrete for grouting, and removing the square groove steel reinforcement cage template after curing for 36 hours to form a square groove support wall;
step 2.6, erecting a vertical groove reinforcement cage template in the vertical groove, wherein the top end of the vertical groove reinforcement cage template is exposed out of the left end of the water retaining component foundation pit;
Step 2.7, vertically placing the vertical groove reinforcement cage into a vertical groove reinforcement cage template, grouting the vertical groove reinforcement cage template with the diameter of the adopted reinforcement bar of phi 6, adopting C25 concrete for grouting, and removing the vertical groove reinforcement cage template after curing for 36 hours to form a vertical groove support wall;
and 2.8, erecting a plurality of support rods between the square groove support wall and the vertical groove support wall, wherein the distance between any two adjacent support rods in the plurality of support rods is the same, the left ends of the support rods are anchored with the vertical groove support wall, the right ends of the support rods are anchored with the square groove support wall, the left ends of the support rods are higher than the right ends of the support rods, and the support rods are made of angle steel.
Further, in step 3, excavating the gabion retaining wall foundation pit comprises the following steps:
step 3.1, excavating a gabion retaining wall foundation pit along a gabion retaining wall foundation excavation line by using a back-hoe excavator, wherein the right end of the gabion retaining wall foundation pit extends to a vertical groove support wall;
3.2, after the gabion retaining wall foundation pit is excavated, pouring a concrete substrate with the depth of 0.5m at the bottom of the gabion retaining wall foundation pit by using C25 concrete;
3.3, embedding a plurality of steel pipes into the side wall of the gabion retaining wall foundation pit, and exposing the end parts of the steel pipes out of the side wall of the gabion retaining wall foundation pit;
And 3.4, spraying C25 concrete on the side wall of the gabion retaining wall foundation pit to form a side wall support.
Further, in step 4, the manufacturing and assembling gabion comprises the following steps:
step 4.1, manufacturing a gabion by adopting low-carbon steel wires with the surfaces plated with Golgin, wherein the gabion comprises a bottom plate, a cover plate, end plates, partition plates and side plates, the partition plates are vertically erected, the bottom plate and the side plates are sequentially connected with the partition plates by adopting binding steel wires, and the side plates are connected with the bottom plate and the side plates by adopting the binding steel wires;
step 4.2, the diameter of the low-carbon steel wire for manufacturing the bottom plate, the cover plate and the partition plate is 2.7mm, the diameter of the low-carbon steel wire for manufacturing the side plate and the end plate is 3.4mm, and the diameter of the binding low-carbon steel wire is 2.0 mm;
and 4.3, plating a Golgi machine on the bottom plate, the cover plate, the end plate, the partition plate and the side plate which are made of the low-carbon steel wires, wherein the plating amount of the Golgi machine on the bottom plate, the cover plate and the partition plate is 245 g/square meter, the plating amount of the side plate and the end plate is 265 g/square meter, and the plating amount of the bound steel wires is 215 g/square meter.
Further, in step 9, the dismantling the water blocking assembly includes the following steps:
step 9.1, detaching the part of the vertical groove support wall exposed out of the left end of the water retaining assembly foundation pit by using an air pick, and reserving the residual vertical groove support wall;
9.2, adopting an air pick to remove a plurality of support rods positioned between the square groove support wall and the vertical groove support wall;
9.3, removing the part of the square groove support wall exposed out of the right end of the water retaining assembly foundation pit by using an air pick, and reserving the rest square groove support wall;
and 9.4, backfilling the foundation pit of the water retaining assembly layer by using a clay mixture, and tamping each layer of clay mixture by using a tamper when backfilling.
Further, in step 9.4, the clay mixture is composed of the following raw materials in parts by weight:
60 parts of clay;
5 parts of poly-p-xylylene glycol;
10 parts of benzenesulfonic acid;
8 parts of carborundum mercury;
10 parts of diatomite;
7 parts of mulberry leaves;
6 parts of sodium silicate;
5 parts of sodium hydroxide;
6 parts of carboxylic acid;
1 part of pine oil;
5 parts of graphite powder;
5 parts of kaolin;
4 parts of copper sulfate;
3 parts of a coupling agent;
8 parts of methacrylic acid;
15 parts of shell powder;
10 parts of pork liver;
5 parts of attapulgite powder;
8 parts of egg white;
3 parts of nano ceramic crystal;
2 parts of nano titanium dioxide;
3 parts of talc;
6 parts of glutinous rice water;
1 part of citrate;
3 parts of polypropylene fiber.
Compared with the prior art, the construction method of the gabion retaining wall has the following remarkable advantages:
1, pour the dark concrete substrate of 0.5m through at gabion retaining wall foundation ditch bottom, concrete foundation structure is firm, and difficult emergence is subsided, can promote the durability of gabion retaining wall, and the soil-retaining effect is excellent.
2, through setting up the manger plate subassembly, the river coastal has formed a barrier, independently comes out gabion retaining wall construction place, has ensured constructor's safety, prevents that construction material or personnel from falling into the aquatic to can protect the river ecological environment, stop the dregs and fall into the river, so that the influence that the construction produced river ecological environment falls to minimumly.
3, for preventing the gabion in the stone filling in-process pressurized or fill with and lead to the panel to warp, adopt the gabion template to consolidate in the gabion outside, the gabion template includes plank sheathing and shelf pipe, loads the completion back, demolishs the shelf pipe, and the plank sheathing moves to next position and installs.
And 4, the construction process is mature, the total construction period is shortened, the maintenance process of the concrete strength rise period is avoided, and the requirement of using numerous and complicated special equipment required by the concrete structure is saved.
And 5, the gabion flexible structure is not easy to break and high in strength, and can adapt to deformation of the foundation.
6, the pork liver, the egg white and the glutinous rice water are added into the clay mixture, so that the stability of the clay mixture is improved, and the stability of the riverway side slope is effectively improved.
Drawings
FIG. 1 is a flow chart of a water retaining assembly building method of the gabion retaining wall according to the invention;
fig. 2 is a schematic structural view of a gabion in the construction method of the gabion retaining wall of the invention.
Description of reference numerals:
1-river channel side slope; 2-water retaining components, 21-water retaining component foundation pits, 22-square grooves, 23-square groove support walls, 24-vertical grooves, 25-vertical groove support walls and 26-support rods; 3-water level; 4-gabion, 41-cover plate, 42-end plate, 43-bottom plate, 44-side plate and 45-clapboard.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1 and 2, the construction method of the gabion retaining wall comprises the following steps:
Step 2, erecting a water retaining assembly 2 for protecting water resources and construction safety;
step 3, excavating a gabion retaining wall foundation pit;
step 4, manufacturing and assembling the gabion 4;
step 5, erecting a gabion template for protecting the gabion 4 from deforming in the stone filling process, and erecting the gabion template in the gabion retaining wall foundation pit, wherein the gabion template comprises a wood template and a frame pipe, and the wood template is fixed by the frame pipe;
step 6, placing the assembled gabion 4 in a gabion formwork, filling the gabion 4 with stones, wherein the grain sizes of the stones are larger than 200mm, the weight of a single stone block is not smaller than 5kg, the stones are higher than a cover plate by 415cm during filling, connecting the cover plate 41 with an end plate 42, a partition plate 45 and an edge plate 44 after the stones are filled, and laying 250g/m2 geotextile on the backwater side of the gabion 4;
step 7, after the cover plate 41 is installed, the frame pipe is removed, the wood formwork is moved to the position of another gabion 4 for installation, and the height difference of any two adjacent gabions 4 is smaller than 35 cm;
step 8, repeating the steps 5-7, sequentially installing gabion gabions 4 on other layers from bottom to top, and twisting the gabion gabions 4 on the upper layer and the lower layer by adopting binding steel wires;
And 9, removing the water retaining assembly 2.
Further, as shown in fig. 1, in step 2, the step of setting up the water blocking assembly includes the following steps:
2.1, digging a water retaining component foundation pit 21 along a water retaining component foundation excavation line by using a backhoe excavator at a position, higher than the water level 3, of the right end of the river side slope 1, wherein the bottom of the water retaining component foundation pit 21 is a horizontal plane, and the right end of the water retaining component foundation pit 21 is 31m away from the water level;
2.2, digging a square groove 22 at the right end of the water retaining assembly foundation pit 21 by using a pick, wherein the width of the square groove 22 is 20cm, and the depth of the square groove 22 is 1 m;
step 2.3, digging a vertical groove 24 at the left end of the water retaining assembly foundation pit 21 by using a pick, wherein the width of the vertical groove 24 is 20cm, and the depth of the vertical groove 24 is 1.5 m;
step 2.4, erecting a square groove steel reinforcement cage template in the square groove 22, wherein the top end of the square groove steel reinforcement cage template is exposed out of the right end of the water retaining component foundation pit 21;
step 2.5, vertically placing the square groove steel reinforcement cage into a square groove steel reinforcement cage template, grouting the square groove steel reinforcement cage template with the diameter of a steel bar of phi 6, adopting C25 concrete for grouting, and removing the square groove steel reinforcement cage template after curing for 36 hours to form a square groove support wall 23;
step 2.6, erecting a vertical groove reinforcement cage template in the vertical groove 24, wherein the top end of the vertical groove reinforcement cage template is exposed out of the left end of the water retaining component foundation pit 21;
Step 2.7, vertically placing the vertical groove reinforcement cage into a vertical groove reinforcement cage template, wherein the diameter of a reinforcement adopted by the vertical groove reinforcement cage is phi 6, grouting into the vertical groove reinforcement cage template, wherein C25 concrete is adopted for grouting, and after curing for 36 hours, removing the vertical groove reinforcement cage template to form a vertical groove support wall 25;
step 2.8, a plurality of support rods 26 are erected between the square groove support wall 23 and the vertical groove support wall 25, the distance between any two adjacent support rods 26 in the plurality of support rods 26 is the same, the left ends of the support rods 26 are anchored with the vertical groove support wall 25, the right ends of the support rods 26 are anchored with the square groove support wall 23, the left ends of the support rods 26 are higher than the right ends of the support rods 26, the support rods 26 are made of angle steel, after the water retaining assembly 2 is erected, a barrier is formed on the river coasts, the gabion retaining wall construction site is separated out, safety of constructors is guaranteed, construction materials or personnel are prevented from falling into water, the ecological environment of the river can be protected, muck is prevented from falling into the river, and influence of construction on the ecological environment is reduced to the minimum.
Further, in step 3, excavating the gabion retaining wall foundation pit comprises the following steps:
step 3.1, excavating a gabion retaining wall foundation pit along a gabion retaining wall foundation excavation line by using a back-hoe excavator, wherein the right end of the gabion retaining wall foundation pit extends to a vertical groove support wall 25;
3.2, after the gabion retaining wall foundation pit is excavated, pouring a concrete substrate with the depth of 0.5m on the bottom of the gabion retaining wall foundation pit by using C25 concrete, wherein the concrete substrate is stable in structure and not prone to sedimentation, the durability of the gabion retaining wall is improved, and the soil retaining effect is excellent;
3.3, embedding a plurality of steel pipes into the side wall of the gabion retaining wall foundation pit, and exposing the end parts of the steel pipes out of the side wall of the gabion retaining wall foundation pit;
and 3.4, spraying C25 concrete on the side wall of the gabion retaining wall foundation pit to form a side wall support.
Further, in step 4, the manufacturing and assembling gabion comprises the following steps:
step 4.1, manufacturing a gabion 4 by adopting low-carbon steel wires with the surfaces plated with Golgin, wherein the gabion 4 comprises a bottom plate 43, a cover plate 41, an end plate 42, a partition plate 45 and side plates 44, erecting the partition plate 45 vertically, connecting the bottom plate 43, the side plates 44 and the partition plate 45 in sequence by adopting binding steel wires, and connecting the side plates 44 with the bottom plate 43 and the side plates 44 by adopting the binding steel wires;
step 4.2, the diameter of the low-carbon steel wire for manufacturing the bottom plate 43, the cover plate 41 and the partition plate 45 is 2.7mm, the diameter of the low-carbon steel wire for manufacturing the side plate 44 and the end plate 42 is 3.4mm, and the diameter of the binding low-carbon steel wire is 2.0 mm;
step 4.3, plating a bottom plate 43, a cover plate 41, an end plate 42, a partition plate 45 and a side plate 44 which are made of low-carbon steel wires with a Golgi fan, wherein the plating amount of the bottom plate 43, the cover plate 41 and the partition plate 45 is 245 g/square meter, the plating amount of the side plate 44 and the end plate 42 is 265 g/square meter, and the plating amount of binding steel wires is 215 g/square meter;
Further, in step 9, the dismantling the water blocking assembly includes the following steps:
step 9.1, detaching the part of the vertical groove support wall 25 exposed out of the left end of the water retaining assembly foundation pit 21 by using an air pick, and reserving the residual vertical groove support wall 25;
9.2, removing a plurality of support rods 26 between the square groove support wall 23 and the vertical groove support wall 25 by adopting an air pick;
9.3, detaching the part of the square groove support wall 23 exposed out of the right end of the water retaining component foundation pit 21 by using an air pick, and reserving the rest square groove support wall 23;
and 9.4, backfilling the foundation pit 21 of the water retaining assembly layer by using a clay mixture, and tamping each layer of clay mixture by using a tamper when backfilling.
Further, in step 9.4, the clay mixture is composed of the following raw materials in parts by weight:
60 parts of clay;
5 parts of poly-p-xylylene glycol;
10 parts of benzenesulfonic acid;
8 parts of carborundum mercury;
10 parts of diatomite;
7 parts of mulberry leaves;
6 parts of sodium silicate;
5 parts of sodium hydroxide;
6 parts of carboxylic acid;
1 part of pine oil;
5 parts of graphite powder;
5 parts of kaolin;
4 parts of copper sulfate;
3 parts of a coupling agent;
8 parts of methacrylic acid;
15 parts of shell powder;
10 parts of pork liver;
5 parts of attapulgite powder;
8 parts of egg white;
3 parts of nano ceramic crystal;
2 parts of nano titanium dioxide;
3 parts of talc;
6 parts of glutinous rice water;
1 part of citrate;
3 parts of polypropylene fiber.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and various modifications and changes can be made by those skilled in the art without departing from the spirit and principle of the present invention, and any modifications, equivalents, improvements, etc. should be included in the scope of the claims of the present invention.
Claims (6)
1. A construction method of a gabion retaining wall is characterized by comprising the following steps:
step 1, construction preparation is carried out, broken stone sundries on a river channel side slope are cleaned, the river channel side slope is measured by a total station, the length, the width and the elevation of the river channel side slope are determined, and a gabion retaining wall foundation excavation line and a water retaining assembly foundation excavation line are marked on the river channel side slope by white marking lines;
step 2, erecting a water retaining assembly for protecting water resources and construction safety;
step 3, excavating a gabion retaining wall foundation pit;
step 4, manufacturing and assembling the gabion;
step 5, erecting a gabion template for protecting the gabion from deforming in the stone filling process, and erecting the gabion template in the gabion retaining wall foundation pit, wherein the gabion template comprises a wood template and a frame pipe, and the wood template is fixed by the frame pipe;
Step 6, placing the assembled gabion in a gabion formwork, filling the gabion with stones, wherein the grain size of the stones is larger than 200mm, the weight of a single stone block is not smaller than 5kg, the stones are higher than the cover plate by 5cm during filling, connecting the cover plate with the end plate, the partition plate and the side plate when the filling of the stones is finished, and laying 250g/m2 geotextile on the backwater side of the gabion;
step 7, after the cover plate is installed, the frame pipe is removed, the wood formwork is moved to the position of another gabion for installation, and the height difference of any two adjacent gabions is smaller than 35 cm;
step 8, repeating the steps 5-7, sequentially installing gabion gabions on other layers from bottom to top, and twisting the gabion gabions on the upper layer and the lower layer by adopting binding steel wires;
and 9, removing the water retaining assembly.
2. The gabion retaining wall construction method according to claim 1, wherein in the step 2, the step of erecting the water blocking assembly comprises the following steps:
2.1, digging a water retaining component foundation pit at the position, higher than the water level surface, of the right end of the river side slope by using a backhoe excavator along a water retaining component foundation digging line, wherein the bottom of the water retaining component foundation pit is a horizontal plane, and the right end of the water retaining component foundation pit is 1m away from the water level surface;
2.2, digging a square groove at the right end of the water retaining assembly foundation pit by using a pick, wherein the width of the square groove is 20cm, and the depth of the square groove is 1 m;
Step 2.3, digging a vertical groove at the left end of the water retaining assembly foundation pit by using a pick, wherein the width of the vertical groove is 20cm, and the depth of the vertical groove is 1.5 m;
step 2.4, erecting a square groove steel reinforcement cage template in the square groove, wherein the top end of the square groove steel reinforcement cage template is exposed out of the right end of the water retaining component foundation pit;
step 2.5, vertically placing the square groove steel reinforcement cage into a square groove steel reinforcement cage template, grouting the square groove steel reinforcement cage template with the diameter of a steel bar of phi 6, adopting C25 concrete for grouting, and removing the square groove steel reinforcement cage template after curing for 36 hours to form a square groove support wall;
step 2.6, erecting a vertical groove reinforcement cage template in the vertical groove, wherein the top end of the vertical groove reinforcement cage template is exposed out of the left end of the water retaining component foundation pit;
step 2.7, vertically placing the vertical groove reinforcement cage into a vertical groove reinforcement cage template, grouting the vertical groove reinforcement cage template with the diameter of the adopted reinforcement bar of phi 6, adopting C25 concrete for grouting, and removing the vertical groove reinforcement cage template after curing for 36 hours to form a vertical groove support wall;
and 2.8, erecting a plurality of support rods between the square groove support wall and the vertical groove support wall, wherein the distance between any two adjacent support rods in the plurality of support rods is the same, the left ends of the support rods are anchored with the vertical groove support wall, the right ends of the support rods are anchored with the square groove support wall, the left ends of the support rods are higher than the right ends of the support rods, and the support rods are made of angle steel.
3. The gabion retaining wall construction method according to claim 1, wherein in step 3, excavating the gabion retaining wall foundation pit comprises the following steps:
step 3.1, excavating a gabion retaining wall foundation pit along a gabion retaining wall foundation excavation line by using a back-hoe excavator, wherein the right end of the gabion retaining wall foundation pit extends to a vertical groove support wall;
3.2, after the gabion retaining wall foundation pit is excavated, pouring a concrete substrate with the depth of 0.5m at the bottom of the gabion retaining wall foundation pit by using C25 concrete;
3.3, embedding a plurality of steel pipes into the side wall of the gabion retaining wall foundation pit, and exposing the end parts of the steel pipes out of the side wall of the gabion retaining wall foundation pit;
and 3.4, spraying C25 concrete on the side wall of the gabion retaining wall foundation pit to form a side wall support.
4. The gabion retaining wall construction method according to claim 1, wherein in step 4, the gabion manufacturing and assembling step comprises the following steps:
step 4.1, manufacturing a gabion by adopting low-carbon steel wires with the surfaces plated with Golgin, wherein the gabion comprises a bottom plate, a cover plate, end plates, partition plates and side plates, the partition plates are vertically erected, the bottom plate and the side plates are sequentially connected with the partition plates by adopting binding steel wires, and the side plates are connected with the bottom plate and the side plates by adopting the binding steel wires;
Step 4.2, the diameter of the low-carbon steel wire for manufacturing the bottom plate, the cover plate and the partition plate is 2.7mm, the diameter of the low-carbon steel wire for manufacturing the side plate and the end plate is 3.4mm, and the diameter of the binding low-carbon steel wire is 2.0 mm;
and 4.3, plating a Golgi machine on the bottom plate, the cover plate, the end plate, the partition plate and the side plate which are made of the low-carbon steel wires, wherein the plating amount of the Golgi machine on the bottom plate, the cover plate and the partition plate is 245 g/square meter, the plating amount of the side plate and the end plate is 265 g/square meter, and the plating amount of the bound steel wires is 215 g/square meter.
5. The gabion retaining wall construction method according to claim 1, wherein in step 9, the water retaining assembly dismantling step comprises the steps of:
step 9.1, detaching the part of the vertical groove support wall exposed out of the left end of the water retaining assembly foundation pit by using an air pick, and reserving the residual vertical groove support wall;
9.2, adopting an air pick to remove a plurality of support rods positioned between the square groove support wall and the vertical groove support wall;
9.3, removing the part of the square groove support wall exposed out of the right end of the water retaining assembly foundation pit by using an air pick, and reserving the rest square groove support wall;
and 9.4, backfilling the foundation pit of the water retaining assembly layer by using a clay mixture, and tamping each layer of clay mixture by using a tamper when backfilling.
6. The construction method of the gabion retaining wall according to claim 5, wherein in step 9.4, the clay mixture is composed of the following raw materials in parts by weight:
60 parts of clay;
5 parts of poly-p-xylylene glycol;
10 parts of benzenesulfonic acid;
8 parts of carborundum mercury;
10 parts of diatomite;
7 parts of mulberry leaves;
6 parts of sodium silicate;
5 parts of sodium hydroxide;
6 parts of carboxylic acid;
1 part of pine oil;
5 parts of graphite powder;
5 parts of kaolin;
4 parts of copper sulfate;
3 parts of a coupling agent;
8 parts of methacrylic acid;
15 parts of shell powder;
10 parts of pork liver;
5 parts of attapulgite powder;
8 parts of egg white;
3 parts of nano ceramic crystal;
2 parts of nano titanium dioxide;
3 parts of talc;
6 parts of glutinous rice water;
1 part of citrate;
3 parts of polypropylene fiber.
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| CN112411619A (en) * | 2020-12-03 | 2021-02-26 | 西南科技大学 | Gabion retaining wall and construction method thereof |
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