CN108265702A - Diaphram wall cage top reinforcing bar protects structure and construction method - Google Patents
Diaphram wall cage top reinforcing bar protects structure and construction method Download PDFInfo
- Publication number
- CN108265702A CN108265702A CN201810077114.4A CN201810077114A CN108265702A CN 108265702 A CN108265702 A CN 108265702A CN 201810077114 A CN201810077114 A CN 201810077114A CN 108265702 A CN108265702 A CN 108265702A
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- Prior art keywords
- reinforcing bar
- steel reinforcement
- cage
- sleeve pipe
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 56
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- 230000002787 reinforcement Effects 0.000 claims abstract description 53
- 230000001681 protective effect Effects 0.000 claims abstract description 30
- 210000002268 wool Anatomy 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000002633 protecting effect Effects 0.000 claims abstract description 4
- 238000013461 design Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to construction of diaphragm wall device and method technical fields; specifically a kind of diaphram wall cage top reinforcing bar protection structure and construction method; including steel reinforcement cage; and the superfilled concrete above the diaphragm wall and diaphragm wall poured along steel reinforcement cage; the reinforcing bar of steel reinforcement cage cage top is beyond the top of diaphragm wall and in superfilled concrete; protection structure further includes steel reinforcement protective sleeve pipe, and steel reinforcement protective sleeve pipe is fixed on by several bands on the outside of the reinforcing bar of cage top.Compared with the existing technology, composite structure simple possible is easily installed and dismantles the present invention, and construction method is succinctly efficient, the advantage is that：It is apparent to reinforcing bar protecting effect, avoid reinforcing bar bending, damage when cutting concrete；When cutting ground-connecting-wall end concrete, process is simplified, labour is configured less, labor intensity is low, mechanical efficiency is high, convenient for rapid construction；Protection sleeve pipe is made using EPE pearl wool, it is at low cost, flexible, degradable.
Description
[technical field]
The present invention relates to construction of diaphragm wall device and method technical field, a kind of specifically diaphram wall cage
Push up reinforcing bar protection structure and construction method.
[background technology]
Construction method of underground continuous wall is wide in the engineering constructions such as water conservancy, building, municipal administration, traffic, mine, railway and environmental protection
General application, it is especially very universal in terms of coal mine shaft, subway station and Deep Underground pit enclosure.At present, in diaphram wall
In order to ensure wall body concrete quality, there is >=superfilled the concrete of 500mm in design requirement work progress to diaphram wall top, this
The superfilled concrete in part is cut when diaphragm wall top Guan Liang is constructed, due to the diaphram wall cage top reinforcing bar for anchoring into Guan Liang be contained in it is superfilled
In concrete, bar bending is caused when cutting, is lost and secondary damage, cuts inefficient, correction reinforcing bar is time-consuming and laborious, to follow-up
Construction quality is affected, and there are no effective technical methods to solve the problems, such as this.
[invention content]
It is an object of the invention to solve the deficiencies in the prior art, a kind of diaphram wall cage top reinforcing bar protection structure is provided
And construction method, when cutting the superfilled concrete of diaphram wall, the cage top reinforcing bar inside superfilled concrete is protected, reaches and avoids
Bar bending is caused when cutting, is lost and secondary damage, improves the purpose for cutting efficiency.
To achieve these goals, a kind of diaphram wall cage top reinforcing bar protection structure is designed, including steel reinforcement cage, Yi Jiyan
The superfilled concrete above diaphragm wall and diaphragm wall that steel reinforcement cage pours, the reinforcing bar of the steel reinforcement cage cage top is beyond diaphragm wall
Top simultaneously be located at superfilled concrete in, the protection structure further includes steel reinforcement protective sleeve pipe, if the steel reinforcement protective sleeve pipe by
Dry band is fixed on the outside of the reinforcing bar of cage top.
The steel reinforcement protective sleeve pipe meets following condition：
d≥D+5mm；δ≥1/5Dmm；L'≥1.05Lmm；
In formula：D is the bar diameter of cage top, L is cage top reinforcing bar length, d are the internal diameter of steel reinforcement protective sleeve pipe, δ is steel
The thickness of pipe of muscle protection sleeve pipe, the length that L' is steel reinforcement protective sleeve pipe.
The steel reinforcement protective sleeve pipe also meets following condition：Steel reinforcement protective sleeve tube material density≤0.03G/cm3；Tension
Intensity >=3.40KG/cm3；Tearing toughness >=2.60KG/cm3；Ductility >=125%.
The protection of steel bar gabion casing is made of EPE pearl wool.
The band meets following condition：
L >=5Dmm and tensile strength >=8.10KG；
In formula：The length that D is the bar diameter of cage top, l is band.
The band is self-locking type plastic band.
The present invention also designs a kind of construction method using the diaphram wall cage top reinforcing bar protection structure, described
Method and step is as follows：
A. before steel reinforcement cage installation is in place, steel reinforcement protective sleeve pipe is set with, and pass through at least two to the reinforcing bar of steel reinforcement cage cage top
Band mutually fixes steel reinforcement protective sleeve pipe and the reinforcing bar of cage top, transfers steel reinforcement cage to the diaphram wall steel led under wall after fixed
At muscle cage designed elevation position, and concreting is carried out until reaching design strength, to form diaphragm wall and superfilled concrete.
B. after the completion of pouring, wall is led in dismounting, by excavating the superfilled concrete on diaphragm wall top for exposing and needing to cut, and is delimited
Line is cut, then using the mechanical superfilled concrete for cutting diaphragm wall top is cut, steel reinforcement protective sleeve pipe is made when cutting together with superfilled
The concrete of concrete is stripped together, ultimately forms the diaphram wall to conform to quality requirements.
Compared with the existing technology, composite structure simple possible is easily installed and dismantles the present invention, and construction method letter is easy to be high
Effect, the advantage is that：
1st, it is apparent to reinforcing bar protecting effect, avoid reinforcing bar bending, damage when cutting concrete.
When the 2nd, cutting ground-connecting-wall end concrete, process is simplified, labour is configured less, labor intensity is low, mechanical efficiency is high,
Convenient for rapid construction.
3rd, protection sleeve pipe is made using EPE pearl wool, it is at low cost, flexible, degradable.
[description of the drawings]
Fig. 1 is the front view of the diaphram wall cage top reinforcing bar protection structure of the present invention；
Fig. 2 is the scheme of installation of the diaphram wall cage top reinforcing bar protection structure of the present invention；
In figure：1. 4. diaphram wall of reinforcing bar of 2. band of steel reinforcement protective sleeve pipe, 3. steel reinforcement cage cage top.
[specific embodiment]
The invention will be further described below in conjunction with the accompanying drawings, and the structure and principle of this device and method are to this profession
It is very clearly for people.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
In the present embodiment, research and development application is carried out by reinforcing bar, concrete and flexible material coupling technique, experiment has found work
To protect the suitable material of structure, i.e. it is continuous to design a kind of new-type underground for EPE pearl wool, and use EPE pearl wool as material
Wall cage top reinforcing bar protects structure.
In practice of construction, after steel reinforcement cage is positioned over setting position, need to pour into diaphragm wall along steel reinforcement cage, and
Continue to pour superfilled concrete above diaphragm wall, when follow-up diaphragm wall top Guan Liang is constructed, row is cut superfilled concrete again.The reinforcing bar
The reinforcing bar of cage cage top is beyond the top of diaphragm wall and in superfilled concrete, and referring to Fig. 1, the protection structure is mainly by two parts
Composition：Steel reinforcement protective sleeve pipe and band pass through several band fixed steel bars protection sleeve pipes, the number of band on the outside of the reinforcing bar of cage top
Amount is at least two, it is preferable that the band is uniformly arranged on the length direction of steel reinforcement protective sleeve pipe.In present embodiment
The steel reinforcement protective sleeve pipe is EPE pearl wool steel reinforcement protective sleeve pipe, and the band is self-locking type plastic band.
The structural parameters and performance parameter of the EPE pearl wool steel reinforcement protective sleeve pipe, with protection bar diameter D and protection
Parameter on the basis of length L, internal diameter d >=D+5mm；Thickness of pipe δ >=1/5Dmm；Pipe range L' >=1.05Lmm.EPE pearl wool reinforcing bar is protected
Shell material density≤0.03G/cm3；It is sealed using foaming structure-non-crosslinked；Tensile strength >=3.40KG/cm3；Tear-proof
Intensity >=2.60KG/cm3；Ductility >=125%；Flexibility is good.
The structural behavior of the self-locking type plastic band, by parameter, length l >=5Dmm on the basis of protection bar diameter D；
Tensile strength >=8.10KG.In the present embodiment, described band one end be equipped with buckle structure, buckle structure be equipped with buckle teeth and
And the block that sets opposite with buckle teeth, the band surface are correspondingly provided with dentalation, and the band other end can pass through institute
The buckle structure stated is meshed at this time by dentalation with buckle teeth, and is passed through block and be fixed.
By installing protection structure on reinforcing bar, mitigate concrete and reinforcing bar is bonded, when being cut to ground-connecting-wall end
Convenient for concrete is removed from reinforcing bar, so as to reduce labor intensity, construction cost is reduced, is accelerated construction progress, protecting ecology
Environment.
Embodiment
Referring to Fig. 2, the installation steps of the protection structure are as follows：Before the installation of diaphram wall steel reinforcement cage is in place, including
Before reinforcement cage hoisting or cage top reinforcing bar enter slot it is in place before, to it is required protection diaphram wall steel reinforcement cage cage top reinforcing bar set
EPE pearl wool steel reinforcement protective sleeve pipe is filled, and is tied tight with the fastening of self-locking type plastic band, every reinforcing bar binding no less than two, this
Two self-locking type plastic bands are employed in embodiment, thereafter transfer steel reinforcement cage to the diaphram wall reinforcing bar led under wall
At cage designed elevation position, then carry out concreting.
After the diaphram wall and superfilled concrete poured reaches design strength, wall is led in dismounting, needs to cut by excavating to expose
Diaphram wall top superfilled concrete, delimitation cuts line, the superfilled concrete on diaphram wall top cut using machinery is cut.Due to
The effect of structure is protected, superfilled concrete reduces bond stress to reinforcing bar, and steel reinforcement protective sleeve pipe is easy to together with concrete when cutting
It is stripped together, the diaphram wall to conform to quality requirements is completed after cutting.The protection structure, which protects reinforcing bar, imitates
Fruit is apparent, reinforcing bar bending, damage when avoiding the concrete superfilled concrete for cutting diaphragm wall top, and is set by rational structure
Meter and structural parameters and performance parameter setting, when cutting ground-connecting-wall end concrete, protection sleeve pipe can remove together and
Do not damage reinforcing bar, realize process is simplified, labour's configuration less, labor intensity is low, mechanical efficiency is high, having convenient for rapid construction
Beneficial effect.
Claims (8)
1. a kind of diaphram wall cage top reinforcing bar protects structure, the diaphragm wall poured including steel reinforcement cage and along steel reinforcement cage
With the superfilled concrete above diaphragm wall, the reinforcing bar of the steel reinforcement cage cage top beyond the top of diaphragm wall and is located in superfilled concrete,
It is characterized in that the protection structure further includes steel reinforcement protective sleeve pipe, the steel reinforcement protective sleeve pipe is fixed on by several bands
On the outside of the reinforcing bar of cage top.
2. diaphram wall cage top reinforcing bar as described in claim 1 protects structure, it is characterised in that the steel reinforcement protective sleeve
Pipe meets following condition：
d≥D+5mm；δ≥1/5Dmm；L'≥1.05Lmm；
In formula：D is the bar diameter of cage top, L is cage top reinforcing bar length, d are the internal diameter of steel reinforcement protective sleeve pipe, δ is that reinforcing bar is protected
The thickness of pipe of protecting pipe, the length that L' is steel reinforcement protective sleeve pipe.
3. diaphram wall cage top reinforcing bar as described in claim 1 protects structure, it is characterised in that the steel reinforcement protective sleeve
Pipe also meets following condition：Steel reinforcement protective sleeve tube material density≤0.03G/cm3；Tensile strength >=3.40KG/cm3；Tear-proof is strong
Degree >=2.60KG/cm3；Ductility >=125%.
4. the diaphram wall cage top reinforcing bar protection structure as described in claims 1 or 2 or 3, it is characterised in that the reinforcing bar
Cage protection sleeve pipe is made of EPE pearl wool.
5. diaphram wall cage top reinforcing bar as described in claim 1 protects structure, it is characterised in that the band meets such as
Lower condition：
L >=5Dmm and tensile strength >=8.10KG；
In formula：The length that D is the bar diameter of cage top, l is band.
6. the diaphram wall cage top reinforcing bar protection structure as described in claim 1 or 5, it is characterised in that the band is certainly
Locking-type Plastic Bandage.
7. a kind of construction method of diaphram wall cage top reinforcing bar protection structure using as described in claims 1 or 2 or 3,
It is characterized in that the method and step is as follows：
A. before steel reinforcement cage installation is in place, steel reinforcement protective sleeve pipe is set with, and pass through at least two bands to the reinforcing bar of steel reinforcement cage cage top
Steel reinforcement protective sleeve pipe and the reinforcing bar of cage top are mutually fixed, transfer steel reinforcement cage to the diaphram wall steel reinforcement cage led under wall after fixed
At designed elevation position, and concreting is carried out until reaching design strength, to form diaphragm wall and superfilled concrete；
B. after the completion of pouring, wall is led in dismounting, by excavating the superfilled concrete on diaphragm wall top for exposing and needing to cut, and delimited and is cut
Then using the mechanical superfilled concrete for cutting diaphragm wall top is cut, steel reinforcement protective sleeve pipe is made when cutting together with superfilled concrete for line
Concrete is stripped together, ultimately forms diaphram wall.
8. as claimed in claim 7 using the construction method of diaphram wall cage top reinforcing bar protection structure, it is characterised in that adopt
The protection of steel bar gabion casing is made of EPE pearl wool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077114.4A CN108265702A (en) | 2018-01-26 | 2018-01-26 | Diaphram wall cage top reinforcing bar protects structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810077114.4A CN108265702A (en) | 2018-01-26 | 2018-01-26 | Diaphram wall cage top reinforcing bar protects structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108265702A true CN108265702A (en) | 2018-07-10 |
Family
ID=62776675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810077114.4A Pending CN108265702A (en) | 2018-01-26 | 2018-01-26 | Diaphram wall cage top reinforcing bar protects structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108265702A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295589A (en) * | 2019-07-18 | 2019-10-01 | 天津深基工程有限公司 | Ground-connecting-wall anchor rib protects structure |
| CN110700259A (en) * | 2019-11-06 | 2020-01-17 | 陕西建工第八建设集团有限公司 | Breaking device and method for breaking super-poured concrete of underground continuous wall in advance |
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|---|---|---|---|---|
| JPH05321248A (en) * | 1992-05-20 | 1993-12-07 | Ohbayashi Corp | Method for removing head part of underground contrinuous wall |
| JP2001355242A (en) * | 2000-06-13 | 2001-12-26 | Toda Constr Co Ltd | Construction method for underground beam in underground continuous wall pile |
| KR200296444Y1 (en) * | 2002-09-12 | 2002-11-23 | (주)한빛하이테크엔지니어링 | Underaround continued wall structure using a large diameter cast-in-place pile installed by Benoto method |
| CN102312429A (en) * | 2011-07-12 | 2012-01-11 | 中铁西北科学研究院有限公司 | Rapid separation and integral hoisting method for pile head of cast-in-place concrete pile |
| CN204000837U (en) * | 2014-05-30 | 2014-12-10 | 浙江大学宁波理工学院 | A kind of prefabricated diaphragm wall |
| CN204000925U (en) * | 2014-05-30 | 2014-12-10 | 浙江大学宁波理工学院 | Prefabricated diaphragm wall |
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| CN106978809A (en) * | 2017-04-19 | 2017-07-25 | 广州亿顺建筑工程劳务有限公司 | A kind of construction method of casing off concrete protective reserved steel bar |
| CN207987913U (en) * | 2018-01-26 | 2018-10-19 | 中铁上海工程局集团华海工程有限公司 | Diaphram wall cage top reinforcing bar protects structure |
-
2018
- 2018-01-26 CN CN201810077114.4A patent/CN108265702A/en active Pending
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| JP2001355242A (en) * | 2000-06-13 | 2001-12-26 | Toda Constr Co Ltd | Construction method for underground beam in underground continuous wall pile |
| KR200296444Y1 (en) * | 2002-09-12 | 2002-11-23 | (주)한빛하이테크엔지니어링 | Underaround continued wall structure using a large diameter cast-in-place pile installed by Benoto method |
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| CN204000925U (en) * | 2014-05-30 | 2014-12-10 | 浙江大学宁波理工学院 | Prefabricated diaphragm wall |
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| CN207987913U (en) * | 2018-01-26 | 2018-10-19 | 中铁上海工程局集团华海工程有限公司 | Diaphram wall cage top reinforcing bar protects structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295589A (en) * | 2019-07-18 | 2019-10-01 | 天津深基工程有限公司 | Ground-connecting-wall anchor rib protects structure |
| CN110700259A (en) * | 2019-11-06 | 2020-01-17 | 陕西建工第八建设集团有限公司 | Breaking device and method for breaking super-poured concrete of underground continuous wall in advance |
| CN110700259B (en) * | 2019-11-06 | 2024-05-31 | 陕西建工第八建设集团有限公司 | Device and method for advanced breaking of underground diaphragm wall superfilling concrete |
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