CN105756059B - A kind of rear anchor formula anti-float anchor rod and construction method - Google Patents
A kind of rear anchor formula anti-float anchor rod and construction method Download PDFInfo
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- CN105756059B CN105756059B CN201610282837.9A CN201610282837A CN105756059B CN 105756059 B CN105756059 B CN 105756059B CN 201610282837 A CN201610282837 A CN 201610282837A CN 105756059 B CN105756059 B CN 105756059B
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- cage bar
- anchor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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Abstract
The invention discloses a kind of rear anchor formula anti-float anchor rod, including anchor pole cage bar, dowel, high-strength bolt, installing plate, seal plate, sleeve pipe and locating ring, locating ring is fixedly connected with anchor pole cage bar, the variable cross-section bending of anchor pole cage bar upper end is fixedly connected to form steel reinforcement cage with dowel lower end, dowel top is provided with silk mouthful, dowel upper end is fixedly connected with seal plate, steel reinforcement cage is located inside pipe casing, micro-expansion cement slurry is poured in sleeve pipe, installing plate is provided with aperture, in the aperture that dowel is inserted to installing plate, installing plate covers sleeve pipe top surface, high-strength bolt is screwed into the intraoral fixed installation plate of silk of dowel.A kind of construction method of rear anchor formula anti-float anchor rod is also disclosed, is comprised the following steps that：（1）Service sleeve,（2）Waterproof construction,（3）Base concrete pours,（4）Anti-float anchor rod reinforcement fabrication,（5）Anti-float anchor rod construction,（6）Sealing off and covering anchorage.The construction speed of the construction method of the present invention, it is ensured that construction safety, reduces construction cost, simple to operate.
Description
Technical field
Patent of the present invention is related to building engineering construction field, and in particular to a kind of rear anchor formula anti-float anchor rod and construction method.
Background technology
Anti-float anchor rod construction in the country's is mainly carried out at basic bottom absolute altitude at present, after earth excavation to designed elevation,
The construction of anti-float anchor rod is proceeded by, sequence of construction is：First drill, then hang in anchor pole cage bar, anchor pole cage bar is stretched into basis
An interior anchorage length, finally carries out the concreting on basis.It is tight for the duration because anti-float anchor rod quantity is more, especially
For needing to complete the engineering of basement bottom board and external wall construction as early as possible before flood season arriving in the coverage of the Yangtze river basin, also have
For features as poor geologic condition, pattern foundation pit supporting structure form is complicated, it is necessary to complete foundation construction as early as possible, enhancing supporting construction resistance to overturning
Engineering is, it is necessary to put into larger human and material resources and financial resources to try to meet the deadline for the project, therefore, is badly in need of one kind in the industry and can first complete basis pouring
Build, the rear device and method for carrying out anti-float anchor rod construction, with accelerating construction progress, it is ensured that construction safety, reduces construction cost.
The content of the invention
It is an object of the invention to fill up the vacancy in prior art there is provided a kind of rear anchor formula anti-float anchor rod device, also
There is provided a kind of construction method of rear anchor formula anti-float anchor rod, simple to operate, high construction efficiency.
The characteristics of a kind of rear anchor formula anti-float anchor rod of the present invention and construction method, is：Sleeve pipe can be first reserved, treats that basis is mixed
After the completion of solidifying soil is poured, then drilled at sleeve pipe, finally carry out sealing off and covering anchorage with installing plate.This method is entered to basis in advance
Row is poured, and after the completion of one side basis is poured, is deployed engineering follow-up work, is accelerated construction speed；On the other hand, base
After the completion of plinth is poured, bottom is formd horizontal support, enhance the stability of support system.
To solve the above problems, the present invention uses following technical scheme：
A kind of rear anchor formula anti-float anchor rod, including anchor pole cage bar, dowel, high-strength bolt, installing plate, seal plate, sleeve pipe and fixed
Position ring, described locating ring is fixedly connected with anchor pole cage bar, and variable cross-section bending in anchor pole cage bar upper end is fixedly connected with shape with dowel lower end
Into steel reinforcement cage, dowel top is provided with silk mouthful, and dowel upper end is fixedly connected with seal plate, and described steel reinforcement cage is located inside pipe casing, set
Micro-expansion cement slurry is poured in pipe, described installing plate is provided with aperture, and hole diameter is identical with dowel external diameter, and dowel is inserted
In the aperture of installing plate, installing plate covers sleeve pipe top surface, and high-strength bolt is screwed into the intraoral fixed installation plate of silk of dowel.
It is 10d that described anchor pole cage bar bends the length welded with dowel by variable cross-section, and d is anchor pole cage bar diameter.
After the installing plate is covered on sleeve pipe, installing plate side is 100mm ~ 150mm along with the distance on the mouth of pipe edge of sleeve pipe.
Described locating ring is welded to connect with anchor pole cage bar, and locating ring is no less than 2, each locating ring spacing 6m.
Symmetrical on described locating ring to set the solder joint welded with anchor pole cage bar, the quantity of anchor pole cage bar is no less than 2.
Described seal plate is under sleeve pipe top surface at 300mm, and seal plate is with dowel by being welded to connect.
Described sleeve pipe, installing plate are steel.
" the variable cross-section bending " is as shown in designing in atlas 11G101-1 pages 60 national building standard.
A kind of construction method of rear anchor formula anti-float anchor rod, is comprised the following steps that：
（1）Service sleeve
First according to reserved anti-float anchor rod position, sleeve pipe is fixed on foundation bottom, bed course is then poured.
（2）Waterproof construction
After the completion of bed course is poured, water-proofing treatment is carried out using waterproof material in ferrule boot.
（3）Base concrete is poured
The colligation of basic upper reinforcement and lower rebar is carried out, basic upper reinforcement is met to be disconnected at sleeve pipe, and reserved steel bar
Head, places on sleeve pipe top surface and hangs mould, then removed after sleeve outer wall casting concrete basis of formation, basic concrete initial set
Go to hang mould, so that in the top surface formation groove of sleeve pipe.
（4）Anti-float anchor rod reinforcement fabrication
Locating ring and anchor pole cage bar are welded with the position of fixing anchor bar cage bar, then dowel top is subjected to rolled thread, dowel
Seal plate is welded at 300mm below the correspondence sleeve pipe top surface of upper end, anchor pole cage bar top is then subjected to variable cross-section bending, anchor pole master
Stay 10d in the upper end of muscle（D is anchor pole cage bar diameter）With dowel lower weld formation steel reinforcement cage, the colligation slip casting in steel reinforcement cage
Pipe, one end of Grouting Pipe is located at the bottom of steel reinforcement cage, and the other end stretches out basic top surface and is connected with grouting pump.
（5）Anti-float anchor rod is constructed
ZSY-60 type drilling machines are stretched into bore in sleeve pipe and open soil layer below sleeve pipe bottom surface to designed elevation, tower crane is then used
Steel reinforcement cage is hung in sleeve pipe, in the drilling of anchor pole cage bar lower end insertion soil layer, from Grouting Pipe injection micro-expansion cement slurry, will be covered
All silts are all driven out of from bottom to up in pipe and after micro-expansion cement slurry of being emerged out of Grouting Pipe, side stops injection microdilatancy water
Mud.
（6）Sealing off and covering anchorage
After after micro-expansion cement slurry initial set, mud and sandstone in cleaning groove make sleeve pipe top surface with groove floor leveling
Sleeve pipe top surface and groove floor concrete in one plane, then perforate on a mounting board, aperture and dowel diameter phase
Together, then installing plate is covered on sleeve pipe through dowel, the rolled thread that dowel top is screwed into high-strength bolt carries out sealing off and covering anchorage.
（7）Closing
Sealed on installing plate periphery and high-strength bolt with waterproof material, then by step（3）In reserve basis
Upper reinforcement head is attached, finally the casting concrete in groove, completes closing work.
Compared with prior art, the beneficial effect of the application is：
The construction method of the present invention can first carry out sole plate concrete in the case where construction environment is complicated and the duration is tight
Pour, make basis formed horizontal support, strengthen the stability of foundation pit supporting system, it is ensured that construction safety, and the present invention
Anchor pole cage bar is equivalent to the tensile strength of a dowel, termination uses installing plate sealing off and covering anchorage, and quick construction, cost is low, simple to operate,
There is stronger generalization.
Brief description of the drawings
A kind of rear anchor formula anti-float anchor rod diagrammatic cross-sections of Fig. 1.
A kind of rear anchor formula anti-float anchor rod top views of Fig. 2.
Fig. 3 anchor pole cage bars are located by connecting schematic diagram.
Fig. 4 is the lower rebar colligation schematic diagram of its lower end.
Fig. 5 locating ring floor map.
Fig. 6 seal plates position schematic diagram with sleeve pipe.
In figure：1st, anchor pole cage bar, 2, dowel, 3, high-strength bolt, 4, installing plate, 5, seal plate, 6, sleeve pipe, 7, locating ring,
8th, micro-expansion cement is starched, and 9, waterproof material, 10, lower rebar, 11, upper reinforcement.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, a kind of rear anchor formula anti-float anchor rod by anchor pole cage bar 1, dowel 2, high-strength bolt 3, installing plate 4, only
Water plate 5, sleeve pipe 6 and locating ring 7 are constituted.Described locating ring 7 is fixedly connected with anchor pole cage bar 1, and the upper end variable cross-section of anchor pole cage bar 1 is curved
Folding is fixedly connected to form steel reinforcement cage with the lower end of dowel 2, and the top of dowel 2 is provided with silk mouthful, and the upper end of dowel 2 is fixedly connected with seal plate 5, made
Stretched into sleeve pipe 6 to bore with drilling machine and open soil layer below the bottom surface of sleeve pipe 6 to designed elevation, steel reinforcement cage is hung in inside sleeve pipe 6,
Micro-expansion cement slurry 8 is poured in sleeve pipe 6, it is after micro-expansion cement starches 8 initial sets, the removing surface of sleeve pipe 6 is smooth clean.Described
Installing plate 4 is provided with aperture, and hole diameter is identical with the external diameter of dowel 2, in the aperture that dowel 2 is inserted to installing plate 4, and with installation
Plate 4 covers the top surface of sleeve pipe 6, and the silk for being finally screwed into dowel 2 with high-strength bolt 3 is intraoral to be fixedly mounted plate 4.
The radical of anchor pole cage bar 1 is shown in be designed according to construction intensity requirement, and the present invention is illustrated exemplified by 3.
Anchor pole cage bar 1 stretches into anchorage length in basis, is required to design according to construction intensity.
Anchor pole cage bar 1 is welded to connect by variable cross-section bending with dowel 2, and weld length is 10d, and d is that anchor pole cage bar 1 is straight
Connect.
" the variable cross-section bending " is as shown in designing in atlas 11G101-1 pages 60 national building standard.
After the installing plate 4 is covered on sleeve pipe 6, the side of installing plate 4 along and the mouth of pipe edge of sleeve pipe 6 distance for 100mm ~
150mm。
Locating ring 7 is welded to connect with anchor pole cage bar 1, spacing 6m mono-, and no less than 2.
Seal plate 5 is set under the top surface of sleeve pipe 6 at 300mm, and seal plate 5 is with dowel 2 by being welded to connect.
A kind of rear anchor formula anti-float anchor rod construction method, concrete operations are as follows：
（1）Service sleeve 6
The anti-float anchor rod position marked first according to design drawing, foundation bottom is fixed on by sleeve pipe 6, then pours pad
Layer.
（2）Waterproof construction
After the completion of bed course is poured, water-proofing treatment is carried out using waterproof material 9 in the root of sleeve pipe 6.
（3）Base concrete is poured
The colligation of basic upper reinforcement 11 and lower rebar 10 is carried out, the region that basic upper reinforcement 11 meets sleeve pipe 6 disconnects,
And reserved steel bar head, in order to which the later stage is attached, is placed on the top surface of sleeve pipe 6 and hang mould, then pour coagulation in the outer wall of sleeve pipe 6
Removed after native basis of formation, basic concrete initial set and hang mould, so that in the top surface formation groove of sleeve pipe 6.
（4）Anti-float anchor rod reinforcement fabrication
Locating ring 7 and anchor pole cage bar 1 are welded with the position of fixing anchor bar cage bar 1, then the top of dowel 2 is subjected to rolled thread,
Seal plate 5 is welded at 300mm below the correspondence top surface of sleeve pipe 6 of the upper end of dowel 2, it is curved that the top of anchor pole cage bar 1 then is carried out into variable cross-section
Stay 10d and the lower weld of dowel 2 formation steel reinforcement cage, the colligation Grouting Pipe in steel reinforcement cage, slip casting in folding, the upper end of anchor pole cage bar 1
One end of pipe is located at the bottom of steel reinforcement cage, and the other end stretches out basic top surface and is connected with grouting pump.
（5）Anti-float anchor rod is constructed
ZSY-60 type drilling machines are stretched into sleeve pipe 6 to bore and open soil layer below the bottom surface of sleeve pipe 6 to designed elevation, tower is then used
Hang and hang in steel reinforcement cage in sleeve pipe 6, in the drilling of the lower end of anchor pole cage bar 1 insertion soil layer, from Grouting Pipe injection micro-expansion cement slurry
8, all silts in sleeve pipe 6 are all driven out of from bottom to up and after micro-expansion cement slurry 8 of being emerged out of Grouting Pipe, side stops injection
Micro-expansion cement slurry 8.
（6）Sealing off and covering anchorage
After micro-expansion cement starches 8 initial sets, mud and sandstone in cleaning groove flatten the top surface of sleeve pipe 6 and groove floor
So that the top surface of sleeve pipe 6 and the concrete of groove floor are in one plane, the then perforate on installing plate 4, aperture is straight with dowel
Footpath is identical, then covers installing plate 4 on sleeve pipe 6 through dowel 2, and the silk mouthful that the top of dowel 2 is screwed into high-strength bolt 3 is sealed
Anchor.
（7）Closing
Sealed on the periphery of installing plate 4 and high-strength bolt 3 with waterproof material 9, then by step（3）In reserve base
Plinth upper reinforcement head is attached, finally the casting concrete in groove, completes closing work.
Claims (2)
1. a kind of rear anchor formula anti-float anchor rod, including anchor pole cage bar（1）, dowel（2）, installing plate（4）, seal plate（5）, sleeve pipe（6）
And locating ring（7）, it is characterised in that：Described locating ring（7）It is fixedly connected with anchor pole cage bar（1）, anchor pole cage bar（1）Upper end, which becomes, to be cut
Face is bent and dowel（2）Lower end is fixedly connected to form steel reinforcement cage, dowel（2）Top sets silk mouthful, dowel（2）Upper end is fixedly connected
Seal plate（5）, described steel reinforcement cage is positioned at sleeve pipe（6）Inside, sleeve pipe（6）Inside pour micro-expansion cement slurry（8）, described installation
Plate（4）Upper setting aperture, hole diameter and dowel（2）External diameter is identical, dowel（2）Insert installing plate（4）Aperture in, installing plate
（4）Cover sleeve pipe（6）Top surface, high-strength bolt（3）It is screwed into dowel（2）The intraoral fixed installation plate of silk（4）；
Described anchor pole cage bar（1）Pass through variable cross-section bending and dowel（2）The length of welding is 10d, and d is anchor pole cage bar（1）Directly
Footpath；
Described installing plate（4）Side is 100mm ~ 150mm along with the distance on the mouth of pipe edge of sleeve pipe；
Described locating ring（7）With anchor pole cage bar（1）It is welded to connect, locating ring（7）No less than 2, each locating ring（7）Spacing
6m；
Described locating ring（7）Upper symmetrical setting and anchor pole cage bar（1）The solder joint of welding, anchor pole cage bar（1）Quantity it is many
In 2；
Described seal plate（5）In sleeve pipe（6）Under top surface at 300mm, seal plate（5）With dowel（2）By being welded to connect.
2. a kind of construction method of rear anchor formula anti-float anchor rod described in claim 1, is comprised the following steps that：
（1）Service sleeve：
First according to reserved anti-float anchor rod position, by sleeve pipe（6）Foundation bottom is fixed on, bed course is then poured；
（2）Waterproof construction：
After the completion of bed course is poured, in sleeve pipe（6）Root uses waterproof material（9）Carry out water-proofing treatment；
（3）Base concrete is poured：
Carry out basic upper reinforcement（11）And lower rebar（10）Colligation, basic upper reinforcement（11）Meet sleeve pipe（6）Place disconnects,
And reserved steel bar head, in sleeve pipe（6）Placed on top surface and hang mould, then in sleeve pipe（6）Outer wall casting concrete basis of formation, basis
Concrete initial set after remove hang mould so that in sleeve pipe（6）Top surface formation groove；
（4）Anti-float anchor rod reinforcement fabrication：
By locating ring（7）With anchor pole cage bar（1）Welding is with fixing anchor bar cage bar（1）Position, then by dowel（2）Rolled on top
Silk, dowel（2）Upper end correspondence sleeve pipe（6）Seal plate is welded below top surface at 300mm（5）, then by anchor pole cage bar（1）Top is entered
Row variable cross-section is bent, anchor pole cage bar（1）Upper end stay 10d and dowel（2）Lower weld formation steel reinforcement cage, is tied up in steel reinforcement cage
Grouting Pipe is pricked, one end of Grouting Pipe is located at the bottom of steel reinforcement cage, and the other end stretches out basic top surface and is connected with grouting pump；
（5）Anti-float anchor rod is constructed：
Drilling machine is stretched into sleeve pipe（6）It is interior to bore the soil layer for opening sleeve pipe bottom surface, steel reinforcement cage is then hung in into sleeve pipe with tower crane（6）It is interior,
Anchor pole cage bar（1）In the drilling of lower end insertion soil layer, from Grouting Pipe injection micro-expansion cement slurry（8）, by sleeve pipe（6）Interior all mud
It is husky all to drive out of from bottom to up and micro-expansion cement slurry of being emerged out of Grouting Pipe（8）Afterwards, side stops injection micro-expansion cement slurry
（8）；
（6）Sealing off and covering anchorage：
Mud and sandstone in groove are cleared up, by sleeve pipe（6）Top surface is flattened with groove floor causes sleeve pipe（6）Top surface and groove floor
Concrete in one plane, then in installing plate（4）Upper perforate, aperture and dowel（2）Diameter is identical, then by installing plate
（4）Through dowel（2）Cover in sleeve pipe（6）On, use high-strength bolt（3）It is screwed into dowel（2）The rolled thread on top carries out sealing off and covering anchorage；
（7）Closing：
In installing plate（4）Periphery and high-strength bolt（3）On use waterproof material（9）Sealed, then by step（3）In reserve
Basic top steel bar end is attached, finally the casting concrete in groove, completes closing work.
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| CN201610282837.9A CN105756059B (en) | 2016-04-29 | 2016-04-29 | A kind of rear anchor formula anti-float anchor rod and construction method |
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| CN201610282837.9A CN105756059B (en) | 2016-04-29 | 2016-04-29 | A kind of rear anchor formula anti-float anchor rod and construction method |
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| CN105756059B true CN105756059B (en) | 2017-11-03 |
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| CN106930284A (en) * | 2017-05-04 | 2017-07-07 | 金陵科技学院 | A kind of anchor structure and construction method |
| CN107268617A (en) * | 2017-07-28 | 2017-10-20 | 中建四局第三建筑工程有限公司 | Construction technology and device after a kind of anti-float anchor rod |
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| CN110359451A (en) * | 2019-06-27 | 2019-10-22 | 中国五冶集团有限公司 | A kind of anti-float anchor rod water-impervious construction method |
| CN111576497B (en) * | 2020-05-15 | 2021-07-23 | 江苏邗建集团有限公司 | Construction method of anti-floating anchor rod applied to underground space |
| CN113585360A (en) * | 2021-07-28 | 2021-11-02 | 中国化学工程第十六建设有限公司 | Anti-floating anchor rod device and construction method |
| CN114150715A (en) * | 2021-12-06 | 2022-03-08 | 中建新越建设工程有限公司 | Anti-floating anchor rod reverse construction method and steel sleeve used by same |
| CN114635418B (en) * | 2022-04-02 | 2024-01-26 | 中建一局集团第三建筑有限公司 | Post construction method for prestressed anti-floating anchor pile |
| CN115094936A (en) * | 2022-07-13 | 2022-09-23 | 中建一局集团第一建筑有限公司 | Anti-floating reinforcing device for elevator shaft and water collecting shaft hoisting die and construction method |
| CN115369929B (en) * | 2022-09-22 | 2023-07-28 | 中国五冶集团有限公司 | Post-pouring anti-floating anchor construction method |
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| CN105756059A (en) | 2016-07-13 |
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