CN107366302B - A kind of construction technology of reinforced concrete retaining wall - Google Patents

A kind of construction technology of reinforced concrete retaining wall Download PDF

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Publication number
CN107366302B
CN107366302B CN201710530242.5A CN201710530242A CN107366302B CN 107366302 B CN107366302 B CN 107366302B CN 201710530242 A CN201710530242 A CN 201710530242A CN 107366302 B CN107366302 B CN 107366302B
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China
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concrete
foundation
parts
foundation trench
construction technology
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CN201710530242.5A
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Chinese (zh)
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CN107366302A (en
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黄秀飞
虞和登
罗贤武
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华恒建设集团有限公司
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/02Retaining or protecting walls
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/08Restraining of underground water by employing open ditches arranged below the level of the water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/02Retaining or protecting walls
    • E02D29/0258Retaining or protecting walls characterised by constructional features
    • E02D29/0275Retaining or protecting walls characterised by constructional features cast in situ

Abstract

A kind of construction technology of reinforced concrete retaining wall, comprising the following steps: S1, excavate out foundation trench along tall earth fill bottom of slope edge, and gutter and catch pit are set;S2, to slot bottom without ponding, be laid with blotter to slot bottom, and be rammed into foundation soil;S3, the prefabricated foundation reinforcing bar in foundation trench, and formwork erection pours base concrete;S4, after base concrete reaches some strength, vertical wall reinforcing bar is installed in base concrete;The faying face of S5, cast-in-place wall and base concrete cut the concrete of the loose portions at faying face and laitance, and wash with water clean;S6, wall template is erected, the cast-in-place wall concrete into template, the intensity to wall concrete reach a timing, swell fixture are squeezed into one side of the wall towards tall earth fill, foundation pile is squeezed into tall earth fill later, swell fixture and foundation pile are tensed into connection with reinforcing bar rope.This kind of technique is built into retaining wall, and not only intensity is high, but also construction efficiency is also relatively high.

Description

A kind of construction technology of reinforced concrete retaining wall

Technical field

The present invention relates to construction field, in particular to a kind of construction technology of reinforced concrete retaining wall.

Background technique

During construction, often because landform reason formed tall earth fill, especially in mountain area into Row construction, then it is particularly evident.And the soil block and rubble on tall earth fill are possible to tumble down from side slope, and then just It is possible that influencing being normally carried out for construction working.

And in the prior art, construction personnel often first erects one of earth-retaining at tall earth fill before construction Wall, and stop with this downslide of soil block and rubble.Meanwhile when the difference in height for encountering embankment side slope is excessive, in order to Guaranteeing retaining wall has enough abilities to balance the thrust of embankment side slope, and the prior art would generally be built using armored concrete Retaining wall, or even retaining wall internal force can be improved using reinforced concrete retaining wall thickness is increased, but so need significantly Increase project cost;Another method is encryption counterfort intercolumniation, but existing embankment side slope height difference is all very big, with depth Increase, soil pressure increases, and the construction method of encryption counterfort intercolumniation is difficult to effectively lower project cost.

Summary of the invention

It is not only easy for construction the purpose of the present invention is to provide a kind of construction technology of reinforced concrete retaining wall, and Also the intensity of reinforced concrete retaining wall is effectively enhanced.

Above-mentioned purpose of the invention has the technical scheme that a kind of applying for reinforced concrete retaining wall Work technique, comprising the following steps:

S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter is set at the edge of foundation trench and is catchmented Hole, is drained;

S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;

S3, the prefabricated foundation reinforcing bar in foundation trench, and formwork erection pours base concrete into foundation trench;

S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall is installed in base concrete Body reinforcing bar;

The faying face of S5, cast-in-place wall and base concrete dig the concrete of the loose portions at faying face and laitance It removes, and washes with water clean;

S6, erect wall template, the cast-in-place wall concrete into template, the intensity to wall concrete reach 2.7MPa~ When 2.9MPa, swell fixture is squeezed into one side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, used Swell fixture and foundation pile are tensed connection by reinforcing bar rope.

By using above-mentioned technical proposal, setting gutter and catch pit during foundation trench excavates, in this way can and When ponding in foundation trench is discharged, be in this way to advantageously ensure that so as to guarantee that working face is dry and substrate is not flooded Construction efficiency, and be conducive to improve the intensity on basis.Meanwhile the bottom of foundation trench be laid with blotter, can reduce in this way from Erosion degree of the water of underground exudation to basis.In addition, the prefabricated foundation reinforcing bar in foundation trench, can be improved basis after pouring in this way Intensity.Also, before pouring wall, first the faying face of wall and base concrete is poured, can be in this way wall It pours and sets support level, stablize so as to improve wall.And the processing before constructing to faying face, it can mention in this way In high wall casting process, concrete leaks out between template and faying face, and then reduces the waste of concrete.Moreover, sharp Reinforced concrete retaining wall and tall earth fill are fixed together with reinforcing bar rope, reinforced concrete retaining wall can be risen in this way To tightening force, to be conducive to improve compression strength.

Preferably, reinforcement foundation includes two layers in S3, and one layer is arranged close to foundation trench bottom, and another layer is close to the centre of foundation trench Height is arranged.

By using above-mentioned technical proposal, it is mixed can to greatly improve basis after pouring for the setting of such two layers of reinforcement foundation Coagulate the intensity of soil.

Preferably, after the reinforcement foundation for installing foundation trench bottom, the pouring of concrete is first carried out, until height reaches The middle position of foundation trench, and after intensity reaches 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and final grouting coagulation Soil is until foundation trench completely fills out.

By using above-mentioned technical proposal, basis is set in the way of two-step pouring, so on the one hand originally to base When the bottom casting concrete of slot, the blocking of upper layer reinforcement foundation can be avoided, thus also it is avoided that upper layer reinforcement foundation Damage, on the other hand can also guarantee that reinforcement foundation evenly distributes the stress of base concrete, to be conducive to mention The high intensity of base concrete.

Preferably, in S6 before pouring wall concrete, first on faying face brush one layer of cement mortar or pad one layer 2~ 3 centimeters thick of 1:2 cement mortar.

It, can be after having poured wall by using above-mentioned technical proposal, faying face and wall can more integrally Change, to be conducive to improve the intensity of wall.

Preferably, the template of wall formwork erection is assembled using seven clamping plate of smooth surface in S6, and perpendicular a tree, used in making timber for boats is with 8 × 10cm a tree, used in making timber for boats spacing 40cm, is enclosed stupefied with steel pipe, is supported with the wooden a tree, used in making timber for boats of 8 × 10cm as diagonal brace, and side form is positioned with the bolt of ф 16 to drawing, bolt Spacing is 80cm, and bolt penetration hole can be used the hard plastic tube that internal diameter is 20~25cm, and when demoulding, bolt is extracted, then with 1:2 water Cement mortar blocks bolt hole.

By using above-mentioned technical proposal, it is more smooth on the one hand can to guarantee that wall can guarantee after pouring in this way State, on the other hand also facilitate the dismounting work of template.

Preferably, the component of the concrete includes: 372~437 parts of cement, 175~193 parts of water, sand by weight 564~582 parts, 5~6 parts of air entraining agent, 10~18 parts of carbamide, 12~15 parts of neopelex, grinding wheel ash 25~35 Part, 5~9 parts of water-reducing agent.

Preferably, the component of the concrete includes: 405 parts of cement, 184 parts of water, 573 parts of sand, bleed by weight 5.5 parts of agent, 14 parts of carbamide, 13.5 parts of neopelex, 30 parts, 7 parts of water-reducing agent of grinding wheel ash.

By using above-mentioned technical proposal, part urea can be freeed with the rusty stain having originally on reinforcing bar to react, and forms network Object is closed, and is attached to the surface of reinforcing bar, becomes protective film, to also just improve the oxidation resistant ability of reinforcing bar.Meanwhile by It can burrow on concrete in Some Insects, and urea and neopelex during this, in concrete It can be drawn into vivo by insect, at this moment urea will destroy insect body wall chitin, and neopelex can be by body wall Wax coat dissolution, and it is waterproof to be attached to formation above.As soon as air-locked tunic, so that insect air-hole blockage also can be made simultaneously Death by suffocation, to also just reduce destruction of the insect to concrete.Furthermore neopelex is exactly that surface is living originally Property agent, thus be conducive to enhance concrete in each raw material degree of mixing.

And grinding wheel ash refer to grinding wheel processing polishing casting when, phase mutual friction generate particulate waste, if discharge It just can cause environmental pollution into environment, therefore, add it in concrete the pollution that can be reduced to environment, together When, main ingredient is silica, and its granularity compare it is small, so it can be to the small spaces in concrete Play the role of filling, improves the density of concrete.

Preferably, the air entraining agent is rosin soap RS-I air entraining agent.

By using above-mentioned technical proposal, mix this kind of air entraining agent its can be introduced during concrete mixes and stirs uniformly and Stable independent micro-bubble, blocks the access of water, and the anti-permeability performance of concrete is made to increase.Simultaneously as in concrete The presence of micro-bubble can improve the workability and mobility of concrete, reduce bleeding, improve the durability of concrete.

Preferably, the water-reducing agent is MH-JS-102 polycarboxylate water-reducer.

By using above-mentioned technical proposal, MH-JS-102 polycarboxylate water-reducer is using methyl polyethylene glycol (MPEG) and different Cyclobutenyl polyethylene glycol (VPEG) polyoxyethylene ether polymeric monomer and unsaturated acids are formed through free radical polymerization, internal to have comb shape Structure using having longer length is polyoxyethylene groups long-chain in molecule, so that having bigger steric hindrance effect and electrostatic Repulsion effect provides bigger dispersibility and higher water-reducing rate for cement.

In conclusion the invention has the following advantages:

1, when excavating foundation trench, and it is provided with gutter and catch pit, the row of ponding in foundation trench can be accelerated in this way It puts, ensure that being normally carried out for construction process;

2, before pouring wall, first to one layer of faying face brush or pad one layer of cement mortar, in this way pour wall when It waits, can guarantee the integraty of wall and faying face;

3, after wall has poured, wall and tall earth fill are fixed together using reinforcing bar rope, it in this way can be into One step improves the ability that wall resists soil pressure.

Detailed description of the invention

Fig. 1 is a kind of construction technology of reinforced concrete retaining wall.

Specific embodiment

Below in conjunction with attached drawing 1, invention is further described in detail.

Embodiment one,

A kind of construction technology of reinforced concrete retaining wall, comprising the following steps:

S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter is set at the edge of foundation trench and is catchmented Hole, is drained;

S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;

S3, the prefabricated foundation reinforcing bar in foundation trench, wherein reinforcement foundation includes two layers, and one layer is arranged close to foundation trench bottom, separately One layer of intermediate altitude close to foundation trench is arranged, and after the reinforcement foundation for installing foundation trench bottom, first carries out the pouring of concrete, Until height reaches the middle position of foundation trench, and after intensity reaches 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and Final grouting concrete is until foundation trench completely fills out;

S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall is installed in base concrete Body reinforcing bar;

The faying face of S5, cast-in-place wall and base concrete dig the concrete of the loose portions at faying face and laitance It removes, and washes with water clean;

S6, before pouring wall concrete, first on faying face brush one layer of cement mortar, later erect wall template, Into template, cast-in-place wall concrete squeezes into swell fixture when the intensity of wall concrete reaches 2.7MPa~2.9MPa One side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, with reinforcing bar rope by swell fixture and foundation pile Tense connection.

Herein, the template of wall formwork erection is assembled using seven clamping plate of smooth surface in S6, and erecting a tree, used in making timber for boats 8 × 10cm a tree, used in making timber for boats spacing is 40cm, It is enclosed with steel pipe stupefied, is supported with the wooden a tree, used in making timber for boats of 8 × 10cm as diagonal brace, side form is positioned with the bolt of ф 16 to drawing, pitch of bolts For 80cm, bolt penetration hole can be used the hard plastic tube that internal diameter is 20~25cm, and when demoulding, bolt is extracted, then with 1:2 cement bonded sand Slurry blocking bolt hole.

In addition, the composition of concrete used in the present embodiment one is cement 372Kg, water 175Kg, sand 564Kg, rosin soap Class RS-I air entraining agent 5Kg, carbamide 10Kg, neopelex 12Kg, grinding wheel ash 25Kg, MH-JS-102 polycarboxylic acids subtract Aqua 5Kg.Wherein, MH-JS-102 polycarboxylate water-reducer is produced by Hunan Ming Huang development in science and technology Co., Ltd.

Embodiment two,

A kind of construction technology of reinforced concrete retaining wall, comprising the following steps:

S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter is set at the edge of foundation trench and is catchmented Hole, is drained;

S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;

S3, the prefabricated foundation reinforcing bar in foundation trench, wherein reinforcement foundation includes two layers, and one layer is arranged close to foundation trench bottom, separately One layer of intermediate altitude close to foundation trench is arranged, and after the reinforcement foundation for installing foundation trench bottom, first carries out the pouring of concrete, Until height reaches the middle position of foundation trench, and after intensity reaches 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and Final grouting concrete is until foundation trench completely fills out;

S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall is installed in base concrete Body reinforcing bar;

The faying face of S5, cast-in-place wall and base concrete dig the concrete of the loose portions at faying face and laitance It removes, and washes with water clean;

S6, before pouring wall concrete, one layer 2~3 centimeters thick of 1:2 cement mortar is first padded on faying face, it After-frame wall body template, the cast-in-place wall concrete into template, when the intensity of wall concrete reaches 2.7MPa~2.9MPa, Swell fixture is squeezed into one side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, it will with reinforcing bar rope Swell fixture and foundation pile tense connection.

Herein, the template of wall formwork erection is assembled using seven clamping plate of smooth surface in S6, and erecting a tree, used in making timber for boats 8 × 10cm a tree, used in making timber for boats spacing is 40cm, It is enclosed with steel pipe stupefied, is supported with the wooden a tree, used in making timber for boats of 8 × 10cm as diagonal brace, side form is positioned with the bolt of ф 16 to drawing, pitch of bolts For 80cm, bolt penetration hole can be used the hard plastic tube that internal diameter is 20~25cm, and when demoulding, bolt is extracted, then with 1:2 cement bonded sand Slurry blocking bolt hole.

In addition, the composition of concrete used in the present embodiment one is cement 437Kg, water 193Kg, sand 582Kg, rosin soap Class RS-I air entraining agent 6Kg, carbamide 18Kg, neopelex 15Kg, grinding wheel ash 35Kg, MH-JS-102 polycarboxylic acids subtract Aqua 9Kg.

Embodiment three,

A kind of construction technology of reinforced concrete retaining wall, comprising the following steps:

S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter is set at the edge of foundation trench and is catchmented Hole, is drained;

S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;

S3, the prefabricated foundation reinforcing bar in foundation trench, wherein reinforcement foundation includes two layers, and one layer is arranged close to foundation trench bottom, separately One layer of intermediate altitude close to foundation trench is arranged, and after the reinforcement foundation for installing foundation trench bottom, first carries out the pouring of concrete, Until height reaches the middle position of foundation trench, and after intensity reaches 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and Final grouting concrete is until foundation trench completely fills out;

S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall is installed in base concrete Body reinforcing bar;

The faying face of S5, cast-in-place wall and base concrete dig the concrete of the loose portions at faying face and laitance It removes, and washes with water clean;

S6, before pouring wall concrete, first on faying face brush one layer of cement mortar, later erect wall template, Into template, cast-in-place wall concrete squeezes into swell fixture when the intensity of wall concrete reaches 2.7MPa~2.9MPa One side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, with reinforcing bar rope by swell fixture and foundation pile Tense connection.

Herein, the template of wall formwork erection is assembled using seven clamping plate of smooth surface in S6, and erecting a tree, used in making timber for boats 8 × 10cm a tree, used in making timber for boats spacing is 40cm, It is enclosed with steel pipe stupefied, is supported with the wooden a tree, used in making timber for boats of 8 × 10cm as diagonal brace, side form is positioned with the bolt of ф 16 to drawing, pitch of bolts For 80cm, bolt penetration hole can be used the hard plastic tube that internal diameter is 20~25cm, and when demoulding, bolt is extracted, then with 1:2 cement bonded sand Slurry blocking bolt hole.

In addition, the composition of concrete used in the present embodiment one is cement 405Kg, water 184Kg, sand 573Kg, rosin soap Class RS-I air entraining agent 5.5Kg, carbamide 14Kg, neopelex 13.5Kg, the poly- carboxylic of grinding wheel ash 30Kg, MH-JS-102 Sour water-reducing agent 7Kg.

Example IV,

A kind of construction technology of reinforced concrete retaining wall, comprising the following steps:

S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter is set at the edge of foundation trench and is catchmented Hole, is drained;

S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;

S3, the prefabricated foundation reinforcing bar in foundation trench, wherein reinforcement foundation includes two layers, and one layer is arranged close to foundation trench bottom, separately One layer of intermediate altitude close to foundation trench is arranged, and after the reinforcement foundation for installing foundation trench bottom, first carries out the pouring of concrete, Until height reaches the middle position of foundation trench, and after intensity reaches 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and Final grouting concrete is until foundation trench completely fills out;

S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall is installed in base concrete Body reinforcing bar;

The faying face of S5, cast-in-place wall and base concrete dig the concrete of the loose portions at faying face and laitance It removes, and washes with water clean;

S6, before pouring wall concrete, one layer 2~3 centimeters thick of 1:2 cement mortar is first padded on faying face, it After-frame wall body template, the cast-in-place wall concrete into template, when the intensity of wall concrete reaches 2.7MPa~2.9MPa, Swell fixture is squeezed into one side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, it will with reinforcing bar rope Swell fixture and foundation pile tense connection.

Herein, the template of wall formwork erection is assembled using seven clamping plate of smooth surface in S6, and erecting a tree, used in making timber for boats 8 × 10cm a tree, used in making timber for boats spacing is 40cm, It is enclosed with steel pipe stupefied, is supported with the wooden a tree, used in making timber for boats of 8 × 10cm as diagonal brace, side form is positioned with the bolt of ф 16 to drawing, pitch of bolts For 80cm, bolt penetration hole can be used the hard plastic tube that internal diameter is 20~25cm, and when demoulding, bolt is extracted, then with 1:2 cement bonded sand Slurry blocking bolt hole.

In addition, the composition of concrete used in the present embodiment one is cement 405Kg, water 193Kg, sand 564Kg, rosin soap Class RS-I air entraining agent 5.5Kg, carbamide 14Kg, neopelex 15Kg, grinding wheel ash 30Kg, MH-JS-102 polycarboxylic acids Water-reducing agent 9Kg.

Embodiment five,

A kind of construction technology of reinforced concrete retaining wall, comprising the following steps:

S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter is set at the edge of foundation trench and is catchmented Hole, is drained;

S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;

S3, the prefabricated foundation reinforcing bar in foundation trench, wherein reinforcement foundation includes two layers, and one layer is arranged close to foundation trench bottom, separately One layer of intermediate altitude close to foundation trench is arranged, and after the reinforcement foundation for installing foundation trench bottom, first carries out the pouring of concrete, Until height reaches the middle position of foundation trench, and after intensity reaches 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and Final grouting concrete is until foundation trench completely fills out;

S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall is installed in base concrete Body reinforcing bar;

The faying face of S5, cast-in-place wall and base concrete dig the concrete of the loose portions at faying face and laitance It removes, and washes with water clean;

S6, before pouring wall concrete, one layer 2~3 centimeters thick of 1:2 cement mortar is first padded on faying face, it After-frame wall body template, the cast-in-place wall concrete into template, when the intensity of wall concrete reaches 2.7MPa~2.9MPa, Swell fixture is squeezed into one side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, it will with reinforcing bar rope Swell fixture and foundation pile tense connection.

Herein, the template of wall formwork erection is assembled using seven clamping plate of smooth surface in S6, and erecting a tree, used in making timber for boats 8 × 10cm a tree, used in making timber for boats spacing is 40cm, It is enclosed with steel pipe stupefied, is supported with the wooden a tree, used in making timber for boats of 8 × 10cm as diagonal brace, side form is positioned with the bolt of ф 16 to drawing, pitch of bolts For 80cm, bolt penetration hole can be used the hard plastic tube that internal diameter is 20~25cm, and when demoulding, bolt is extracted, then with 1:2 cement bonded sand Slurry blocking bolt hole.

In addition, the composition of concrete used in the present embodiment one is cement 372Kg, water 184Kg, sand 573Kg, rosin soap Class RS-I air entraining agent 6Kg, carbamide 18Kg, neopelex 12Kg, grinding wheel ash 30Kg, MH-JS-102 polycarboxylic acids subtract Aqua 7Kg.

By carrying out the test of compression strength to reinforced concrete retaining wall of the embodiment one into embodiment five, obtain with Lower data: institute according to detection method be GB50107-2010

Embodiment one Embodiment two Embodiment three Example IV Embodiment five Compression strength/MPa 4.834 5.681 5.062 4.947 4.894

It can be seen that the requirement that retaining wall can be fully achieved in construction method of the invention by upper table, and also significantly Improve construction efficiency.

This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this All by the protection of Patent Law in the scope of the claims of invention.

Claims (8)

1. a kind of construction technology of reinforced concrete retaining wall, comprising the following steps:
S1, a foundation trench is excavated out along tall earth fill bottom of slope edge, and gutter and catch pit are set at the edge of foundation trench, into Row draining;
S2, when foundation trench bottom is without ponding, be laid with blotter to the bottom of foundation trench, and be rammed into foundation soil with ramming machine;
S3, the prefabricated foundation reinforcing bar in foundation trench, and formwork erection pours base concrete into foundation trench;
S4, after the intensity of base concrete reaches 2.4MPa~2.6MPa, vertical wall steel is installed in base concrete Muscle;
The faying face of S5, cast-in-place wall and base concrete cut the concrete of the loose portions at faying face and laitance, and It washes with water clean;
S6, erect wall template, the cast-in-place wall concrete into template, the intensity to wall concrete reach 2.7MPa~ When 2.9MPa, swell fixture is squeezed into one side of the wall towards tall earth fill, squeezes into foundation pile in tall earth fill later, used Swell fixture and foundation pile are tensed connection by reinforcing bar rope;
The component of the concrete include: by weight 372~437 parts of cement, 175~193 parts of water, 564~582 parts of sand, 5~6 parts of air entraining agent, 10~18 parts of carbamide, 12~15 parts of neopelex, 25~35 parts of grinding wheel ash and water-reducing agent 5 ~9 parts.
2. a kind of construction technology of reinforced concrete retaining wall according to claim 1, it is characterised in that: basic steel in S3 Muscle includes two layers, and one layer is arranged close to foundation trench bottom, and another layer is arranged close to the intermediate altitude of foundation trench.
3. a kind of construction technology of reinforced concrete retaining wall according to claim 2, it is characterised in that: installing base After the reinforcement foundation of trench bottom, the pouring of concrete is first carried out, until height reaches the middle position of foundation trench, and when intensity reaches To after 2MPa~2.2MPa, then second layer reinforcement foundation is installed, and final grouting concrete is until foundation trench completely fills out.
4. a kind of construction technology of reinforced concrete retaining wall according to claim 1, it is characterised in that: poured in S6 Before wall concrete, the 1:2 cement mortar of one layer 2~3 centimeters thick of one layer of cement mortar or pad is first brushed on faying face.
5. a kind of construction technology of reinforced concrete retaining wall according to claim 1, it is characterised in that: wall is vertical in S6 The template of mould is assembled using seven clamping plate of smooth surface, and erecting a tree, used in making timber for boats 8 × 10cm a tree, used in making timber for boats spacing is 40cm, enclosed with steel pipe it is stupefied, with 8 × 10cm's The wooden a tree, used in making timber for boats is supported as diagonal brace, and for side form with the bolt of ф 16 to positioning is drawn, internal diameter is can be used in pitch of bolts 80cm, bolt penetration hole For the hard plastic tube of 20~25cm, when demoulding, bolt is extracted, then block bolt hole with 1:2 cement mortar.
6. a kind of construction technology of reinforced concrete retaining wall according to claim 5, which is characterized in that the concrete Component include: by weight
405 parts of cement
184 parts of water
573 parts of sand
5.5 parts of air entraining agent
14 parts of carbamide
13.5 parts of neopelex
30 parts of grinding wheel ash
7 parts of water-reducing agent.
7. a kind of construction technology of reinforced concrete retaining wall according to claim 6, it is characterised in that: the bleed Agent is rosin soap RS-I air entraining agent.
8. a kind of construction technology of reinforced concrete retaining wall according to claim 6, it is characterised in that: the diminishing Agent is MH-JS-102 polycarboxylate water-reducer.
CN201710530242.5A 2017-06-27 2017-06-27 A kind of construction technology of reinforced concrete retaining wall CN107366302B (en)

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CN104195911A (en) * 2014-08-26 2014-12-10 德州市公路工程总公司 Widened embankment structure with beside-water cliff high retaining wall fill section and construction method of widened embankment structure
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