CN106939701A - The pre-buried pipeline sealing off and covering anchorage construction method of back-off anchor recess - Google Patents
The pre-buried pipeline sealing off and covering anchorage construction method of back-off anchor recess Download PDFInfo
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- CN106939701A CN106939701A CN201710066445.3A CN201710066445A CN106939701A CN 106939701 A CN106939701 A CN 106939701A CN 201710066445 A CN201710066445 A CN 201710066445A CN 106939701 A CN106939701 A CN 106939701A
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- concrete
- anchor recess
- sealing
- template
- covering anchorage
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a kind of pre-buried pipeline sealing off and covering anchorage construction method of back-off anchor recess, comprise the following steps：Step 1: before prestressed reinforced concrete construction is poured, fixed at least one can direct reach the pipeline of back-off anchor recess highest point to be formed from the top surface of prestressed reinforced concrete construction；Step 2: prestressed reinforced concrete construction is poured after solidification, back-off anchor recess is sealed using template；Step 3: irrigating concrete into anchor recess by pre-buried pipeline.The sealing off and covering anchorage template of the present invention is disposably completely closed, vibrated by attached vibrator, sealing off and covering anchorage body good integrity, concrete is irrigated from top to down, the bubble that concrete vibrating is produced can be discharged outside back-off anchor recess by pre-buried pipeline, and sealing off and covering anchorage body is completely attached to former concrete interface, in the absence of cavity and the face that comes off, sealing off and covering anchorage body can be very good corrosion of the steam to prestressed anchor in isolation air, enhance structure durability.
Description
Technical field
The present invention relates to pre-stress construction field.It is more particularly related to a kind of pre-buried pipeline of back-off anchor recess
Sealing off and covering anchorage construction method.
Background technology
Prestressed reinforced concrete construction is resulting due to by before external force load action, first artificially applying pressure to it
Pre-stressed state is come more to reduce or offset the tension caused by external load by means of the higher compression strength of concrete
The deficiency of its tensile strength is mended, the purpose for postponing concrete in tension zone cracking is reached, in various construction engineerings increasingly
It is widely applied, using more universal especially in the architectural process of drag-line bridge, however, because anchorage is integrally fixed at pre- answer
The lower inclined plane of power structure, anchor recess is present in concrete surface in back-off form, if closing template using conventional method pours sealing off and covering anchorage
Concrete then can there are the following problems：For indwelling concreting hole, template is unable to completely close；Under gravity；Coagulation
Can not fit during soil perfusion with original concrete surface or concrete vibrating after exist above anchor recess it is empty, prevent sealing off and covering anchorage concrete from
Deaden air and water to protect anchorage formation, or even occur sealing off and covering anchorage concrete and drop.
The content of the invention
It is an object of the invention to provide a kind of pre-buried pipeline sealing off and covering anchorage construction technology of back-off anchor recess, technique is simple, can be very well
Solve the above problems, provide superior technique guarantee for the durability of prestressed reinforced concrete construction.
In order to realize that there is provided a kind of pre-buried pipeline of back-off anchor recess envelope according to object of the present invention and further advantage
Anchor construction method, comprises the following steps：
Step 1: before prestressed reinforced concrete construction is poured, fixed at least one can be from the top surface of prestressed reinforced concrete construction
Direct reach the pipeline of back-off anchor recess highest point to be formed；
Step 2: prestressed reinforced concrete construction is poured after solidification, back-off anchor recess is sealed using template；
Step 3: irrigating concrete into anchor recess by pre-buried pipeline.
Preferably, the pipeline in step one, will using the plug that can be taken off before prestressed reinforced concrete construction is poured
Two-port is sealed.
Preferably, the detailed process that back-off anchor recess is sealed is included using template in step 2：Outside anchor recess, along anchor recess
The edge of opening pastes one and encloses sponge sealing strip, and template is buckled in into anchor in the way of anchor recess opening and sponge sealing strip is completely covered
On cave, the template is provided with least two template back ribs uniformly arranged, two of the template back rib back to anchor recess one side
The fixing hole just to concrete surface outside anchor recess is provided with, lower mark is done in the position that fixing hole is projected in into concrete surface, and
Mark beats blind hole, then passes through fixing hole and corresponding blind hole with expansion bolt, template fixing seal is lived into anchor recess, in template
Attached vibrator is installed back to anchor recess one side.
Preferably, when irrigating concrete into anchor recess by pre-buried pipeline in step 3, also need to open attached vibrator,
After concrete no longer sinks and is full of anchor recess, vibrator is closed, will be filled up in pre-buried pipeline with concrete.
Preferably, the concrete irrigated in step 3 is fine-stone concrete.
Preferably, prestressed reinforced concrete construction is poured after solidification in step 2, first with the mode of mechanical dabbing to anchor
The concrete surface dabbing of cave inwall, then place the good sealing off and covering anchorage reinforcing bar of colligation in anchor recess, it is then with template that back-off anchor recess is close
Envelope.
Preferably, number of conduits pre-buried in step one is two, during step 3 is irrigated concrete, one
Pipeline fills concrete into anchor recess, and another pipeline inflates pressurization into anchor recess, and specific operation process is：Gradually to increase while concrete is filled
Big gas flow rate is inflated into anchor recess, until when air pressure reaches 0.12MPa in anchor recess, maintaining gas flow rate to keep air pressure not
Become, stop filling concrete unlatching attached vibrator and carry out a period of time of vibrating, if finding air pressure decline in process of vibrating, increase gas
Rate of flow of fluid makes air pressure recover to 0.12MPa；Proceed second of filling concrete, and adjusting gas flow rate reaches the air pressure in anchor recess
0.15MPa, maintains gas flow rate to keep air pressure constant, stops filling concrete unlatching attached vibrator and carries out a period of time of vibrating, if
Find that air pressure declines in process of vibrating, then increasing gas flow rate makes air pressure recover to 0.15MPa；Proceed third time and fill concrete,
Open attached vibrator to be vibrated, and be gradually reduced gas flow rate, when concrete is full of in anchor recess, stop inflation with vibrating.
The present invention at least includes following beneficial effect：
1st, sealing off and covering anchorage template is disposably completely closed, and is vibrated by attached vibrator, sealing off and covering anchorage body good integrity.
2nd, concrete is irrigated from top to down, and the bubble that concrete vibrating is produced can discharge back-off anchor recess by pre-buried pipeline
Outside, sealing off and covering anchorage body is completely attached to former concrete interface, in the absence of cavity and the face that comes off.
3rd, sealing off and covering anchorage body can be very good corrosion of the steam to prestressed anchor in isolation air, enhance structure durable
Property.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the construction schematic diagram of pre-buried pipeline sealing off and covering anchorage construction method of the present invention；
Fig. 2 is the structural representation of sealing off and covering anchorage template of the present invention；
1 is anchor recess in figure, and 2 be template, and 3 be pipeline, and 4 be sponge sealing strip, and 5 be template back rib, and 6 be fixing hole, and 7 be swollen
Swollen bolt.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
In the description of the invention, term " transverse direction ", " longitudinal direction ", " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom ", " interior ", " outer " are based on orientation shown in the drawings or position
Relation is put, is for only for ease of and is described the present invention and simplify description, is not that instruction or the signified device of hint or element are necessary
With specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
As depicted in figs. 1 and 2, a kind of sealing off and covering anchorage construction method of pre-buried pipeline 3 of back-off anchor recess 1 of present invention offer, including with
Lower step：
Step 1: before prestressed reinforced concrete construction is poured, fixed at least one can be from the top surface of prestressed reinforced concrete construction
The pipeline 3 of the highest point of back-off anchor recess 1 to be formed is directed reach, because anchor recess 1 is in back-off shape, therefore there is a highest point, if
Pipeline 3 is stretched into anchor recess 1, can be because concrete does not have the tail end of piping 3 after grouting, and gas can not be discharged and interruption of constructing, and this is pre-
Prestressed concrete structure can be the cast-in-place beam section of bridge, or prefabricated beam section, also or load-bearing cast-in-situ floor, pipeline 3
Pvc pipe either steel pipe can be used, by colligation or is weldingly fixed on the framework of steel reinforcement of prestressed reinforced concrete construction, prevents
When prestressed reinforced concrete construction is poured, pipeline 3 floats or offset, after prestressed reinforced concrete construction is poured, can be in gravity
Under effect, concrete is directly irrigated into anchor recess 1 by pre-buried pipeline 3.
Step 2: prestressed reinforced concrete construction is poured after solidification, back-off anchor recess 1 is sealed using template 2, the mode of sealing
Also have a variety of, including：Directly outside anchor recess 1, fluid sealant is coated at the edge that anchor recess 1 is open, and then template 2 is buckled on anchor recess 1,
Sealed, punched at the edge of the plate face of template 2 to pre- by the gap of fluid sealant stopend 2 and the outer concrete surface of anchor recess 1
Prestressed concrete face nailing enters screw to fix, or outside anchor recess 1, the edge that anchor recess 1 is open is stained with sponge sealing strip 4, so
Template 2 is buckled on anchor recess 1 afterwards, is punched at the edge of the plate face of template 2 and enter screw to prestressed concrete face nailing to compress template
2, template 2 is compressed sponge sealing strip 4 while playing fixation and seal, sealing anchor recess 1 can prevent from pouring into
Concrete leakage in anchor recess 1.
Step 3: irrigating concrete into anchor recess 1 by pre-buried pipeline 3, the mode of perfusion can be manually to the introversion of pipeline 3
Can also be that one grouter of connection is automatic into pipeline 3 fills concrete, and a variety of air-free concretes can also be used while concrete is filled
Means, such as vibrator be installed or inflate pressurization into anchor recess 1 template 2 is outer, filled in anchor recess 1 can be protected after concrete anchorage every
Exhausted air, prevents that anchorage from being corroded.
The sealing off and covering anchorage body removes external various parts and has then carried out water seasoning, and be capped wet grass after the completion of concrete is filled
Bag, curing time is form removal after three days, three days, is all blocked in the hole of fixed form 2 with mortar, and cuts away and be exposed at concrete
The unnecessary pipeline 3 on surface.
Because sealing off and covering anchorage template 2 is disposably completely closed, vibrated by attached vibrator, sealing off and covering anchorage body good integrity, coagulation
Soil is irrigated from top to down, and the bubble that concrete vibrating is produced can be discharged outside back-off anchor recess 1 by pre-buried pipeline 3, sealing off and covering anchorage body and original
Concrete interface is completely attached to, in the absence of cavity and the face that comes off, and sealing off and covering anchorage body can be very good the steam completely cut off in air in advance should
The corrosion of power anchorage, enhances structure durability.
In another embodiment, the pipeline 3 in step one uses the envelope that can be taken off before prestressed reinforced concrete construction is poured
Stifled thing seals two-port, it is to avoid block pipeline 3 in prestressed reinforced concrete construction casting process, prestressed reinforced concrete construction
The unobstructed situation in duct should be also checked after the completion of pouring, such as pipeline 3 is blocked, and should be dredged in time.
In another embodiment, the detailed process that back-off anchor recess 1 is sealed is included using template 2 in step 2：In anchor recess 1
Outside, paste one along the edge that anchor recess 1 is open and enclose sponge sealing strip 4, template 2 is open and foam seal so that anchor recess 1 is completely covered
The mode of bar 4 is buckled on anchor recess 1, and the template 2 is provided with least two template back ribs 5 uniformly arranged back to the one side of anchor recess 1,
Two of the template back rib 5 is provided with the fixing hole 6 just to the outer concrete surface of anchor recess 1, and fixing hole 6 is projected in into concrete
Lower mark is done in the position in face, and beats blind hole in mark, then fixing hole 6 and corresponding blind hole is passed through with expansion bolt 7, by mould
The fixing seal of plate 2 lives anchor recess 1, simultaneously installs attached vibrator back to anchor recess 1 in template 2, in this embodiment, uses sponge
It, because its air-tightness compared with fluid sealant more preferably, is fixed using expansion bolt 7, is because more convenient and connection reliability that sealing strip 4, which is,
Height, attached vibrator is installed in template 2, is vibrated when pouring, the concrete of the closely knit perfusion of energy.
In another embodiment, when irrigating concrete into anchor recess 1 by pre-buried pipeline 3 in step 3, also need to open and adhere to
Formula vibrator, after concrete no longer sinks and is full of anchor recess 1, closes vibrator, will be filled up, and implemented herein with concrete in pre-buried pipeline 3
In example, when concrete no longer sinks to illustrating that the concrete of perfusion in anchor recess 1 is uniformly closely knit, middle not bubbles without vibrating again, this shape
The sealing off and covering anchorage body being frozen under state is homogeneous closely knit, can preferably protect anchorage not to be corroded.
In another embodiment, the concrete irrigated in step 3 is that the density after fine-stone concrete, the same solidification is good, and
In work progress, the time of pouring can be greatly shortened without vibrate and reduce labor intensity, the coagulation after solidification
Native surface is not in bubble or pitted skin, it is not necessary to carry out skin patching.
In another embodiment, prestressed reinforced concrete construction is poured after solidification in step 2, first with the side of mechanical dabbing
Formula places the good sealing off and covering anchorage reinforcing bar of colligation to the concrete surface dabbing of the inwall of anchor recess 1, then in anchor recess 1, then will be fallen with template 2
Button anchor recess 1 is sealed, and to the inwall dabbing of anchor recess 1, is added the contact area of the concrete and former concrete surface of perfusion, is laid sealing off and covering anchorage steel
Muscle, adds the connection of the sealing off and covering anchorage body formed after perfusion and former xoncrete structure, does not allow sealing off and covering anchorage body easy to fall off.
In another embodiment, the number of pipeline 3 pre-buried in step one is two, and the process of concrete is irrigated in step 3
In, a pipeline 3 fills concrete into anchor recess 1, and another pipeline 3 inflates pressurization into anchor recess 1, and specific operation process is：Filling concrete
Inflated simultaneously with the gas flow rate gradually increased into anchor recess 1, until when air pressure reaches 0.12MPa in anchor recess 1, maintaining gas stream
Speed keeps air pressure constant, stops filling concrete unlatching attached vibrator and carries out a period of time of vibrating, if finding air pressure in process of vibrating
Decline, then increasing gas flow rate makes air pressure recover to 0.12MPa；Proceed second of filling concrete, and adjust gas flow rate to make anchor
Air pressure in cave 1 reaches 0.15MPa, maintains gas flow rate to keep air pressure constant, stops filling concrete unlatching attached vibrator and carries out
Vibrate a period of time, if being found in process of vibrating, air pressure declines, and increasing gas flow rate makes air pressure recover to 0.15MPa；Continue
Carry out third time and fill concrete, open attached vibrator and vibrated, and be gradually reduced gas flow rate, when concrete is full of in anchor recess 1,
Stop inflation with vibrating.
In this embodiment, concrete being filled several times can make the concrete of perfusion further fine and close, be aided with gas while vibrating
Press to accelerate the effect that the process vibrated and reinforcement are vibrated, and because the gas squeezed into can be escaped from the pipeline 3 of perfusion concrete, therefore need
Keep certain gas flow rate to maintain the air pressure in anchor recess 1, and using relatively low air pressure be due to for the first time the perfusion of concrete
Amount is also less, it is not necessary to excessive to vibrate and pressurize, after irrigating for second in anchor recess 1 concrete amount increase, so needing increase gas
Press to aid in vibrating, but the concrete irrigated afterwards has already taken up a part of space, so needing regulation gas flow rate to remain new
Air pressure, finally, the concrete of perfusion are full of anchor recess 1 soon, then to reduce air-flow, because now the gas compartment is smaller, the gas of very little
Rate of flow of fluid can also produce larger air pressure, and gas discharge will be mixed into bubble in concrete not in time, and effect is not good on the contrary.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (7)
1. the pre-buried pipeline sealing off and covering anchorage construction method of a kind of back-off anchor recess, it is characterised in that comprise the following steps：
Step 1: before prestressed reinforced concrete construction is poured, fixed at least one can direct reach from the top surface of prestressed reinforced concrete construction
The pipeline of back-off anchor recess highest point to be formed；
Step 2: prestressed reinforced concrete construction is poured after solidification, back-off anchor recess is sealed using template；
Step 3: irrigating concrete into anchor recess by pre-buried pipeline.
2. pre-buried pipeline sealing off and covering anchorage construction method as claimed in claim 1, it is characterised in that the pipeline in step one is in prestressing force
Before concrete structure pouring, two-port is sealed using the plug that can be taken off.
3. pre-buried pipeline sealing off and covering anchorage construction method as claimed in claim 1, it is characterised in that template is used in step 2 by back-off
The detailed process of anchor recess sealing includes：Outside anchor recess, paste one along the edge of anchor recess opening and enclose sponge sealing strip, by template with complete
All standing anchor recess opening and the mode of sponge sealing strip are buckled on anchor recess, and the template is provided with uniform arrangement back to anchor recess one side
At least two template back ribs, two of the template back rib is provided with the fixing hole just to concrete surface outside anchor recess, will be solid
Determine hole and be projected in the position of concrete surface to do lower mark, and blind hole is beaten in mark, then with expansion bolt through fixing hole and
Corresponding blind hole, anchor recess is lived by template fixing seal, and attached vibrator is installed back to anchor recess one side in template.
4. pre-buried pipeline sealing off and covering anchorage construction method as claimed in claim 4, it is characterised in that pass through pre-buried pipeline in step 3
When irrigating concrete into anchor recess, also need to open attached vibrator, after concrete no longer sinks and is full of anchor recess, close vibrator, will
Filled up in pre-buried pipeline with concrete.
5. pre-buried pipeline sealing off and covering anchorage construction method as claimed in claim 1, it is characterised in that the concrete irrigated in step 3 is microlith
Concrete.
6. pre-buried pipeline sealing off and covering anchorage construction method as claimed in claim 1, it is characterised in that the prestressed concrete in step 2
Structure is poured after solidification, first with the concrete surface dabbing of the mode of mechanical dabbing to anchor recess inwall, then the placement in anchor recess is tied up
The sealing off and covering anchorage reinforcing bar tied, is then sealed back-off anchor recess with template.
7. pre-buried pipeline sealing off and covering anchorage construction method as claimed in claim 4, it is characterised in that pre-buried number of conduits in step one
For two, during step 3 is irrigated concrete, a pipeline fills concrete into anchor recess, and another pipeline is inflated into anchor recess to be added
Press, specific operation process is：Inflated while concrete is filled with the gas flow rate gradually increased into anchor recess, until air pressure in anchor recess
When reaching 0.12MPa, maintain gas flow rate keep air pressure it is constant, stop fill concrete open attached vibrator carry out vibrate one section when
Between, if being found in process of vibrating, air pressure declines, and increasing gas flow rate makes air pressure recover to 0.12MPa；Proceed second
Concrete is filled, and adjusting gas flow rate makes the air pressure in anchor recess reach 0.15MPa, maintains gas flow rate to keep air pressure constant, stops filling
Concrete opens attached vibrator and carries out a period of time of vibrating, if being found in process of vibrating, air pressure declines, and increasing gas flow rate makes
Air pressure recovers to 0.15MPa；Proceed third time and fill concrete, open attached vibrator and vibrated, and be gradually reduced gas
Flow velocity, when concrete is full of in anchor recess, stops inflation with vibrating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066445.3A CN106939701B (en) | 2017-02-08 | 2017-02-08 | It is buckled to the pre-buried pipeline sealing off and covering anchorage construction method of anchor recess |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066445.3A CN106939701B (en) | 2017-02-08 | 2017-02-08 | It is buckled to the pre-buried pipeline sealing off and covering anchorage construction method of anchor recess |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106939701A true CN106939701A (en) | 2017-07-11 |
| CN106939701B CN106939701B (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710066445.3A Active CN106939701B (en) | 2017-02-08 | 2017-02-08 | It is buckled to the pre-buried pipeline sealing off and covering anchorage construction method of anchor recess |
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| CN (1) | CN106939701B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335165A (en) * | 2020-03-04 | 2020-06-26 | 中铁第四勘察设计院集团有限公司 | Construction method for sealing anchor and auxiliary anchor sealing structure thereof |
| CN113090068A (en) * | 2021-04-23 | 2021-07-09 | 天津核海源科技发展有限公司 | Vacuum pouring process for rush-repairing deep-buried building top concrete structure under limited conditions |
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| CN1287202A (en) * | 1999-09-03 | 2001-03-14 | 柳州欧维姆建筑机械有限公司 | Vacuum grouting process and its sealed anchor cable |
| KR20120041470A (en) * | 2010-10-21 | 2012-05-02 | 이선구 | Prestressing method of tendon using socket and turnbuckle |
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| CN1287202A (en) * | 1999-09-03 | 2001-03-14 | 柳州欧维姆建筑机械有限公司 | Vacuum grouting process and its sealed anchor cable |
| KR20120041470A (en) * | 2010-10-21 | 2012-05-02 | 이선구 | Prestressing method of tendon using socket and turnbuckle |
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| 李异琴: ""T梁负弯矩快速封锚施工技术"", 《山西交通科技》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335165A (en) * | 2020-03-04 | 2020-06-26 | 中铁第四勘察设计院集团有限公司 | Construction method for sealing anchor and auxiliary anchor sealing structure thereof |
| CN111335165B (en) * | 2020-03-04 | 2021-11-16 | 中铁第四勘察设计院集团有限公司 | Construction method for sealing anchor and auxiliary anchor sealing structure thereof |
| CN113090068A (en) * | 2021-04-23 | 2021-07-09 | 天津核海源科技发展有限公司 | Vacuum pouring process for rush-repairing deep-buried building top concrete structure under limited conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106939701B (en) | 2019-02-22 |
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Effective date of registration: 20210901 Address after: 430048 No. 11 Jinyinhu Road, Dongxihu District, Wuhan City, Hubei Province Patentee after: The Second Harbor Engineering Co. Patentee after: China Communication 2nd Navigational Bureau 2nd Engineering Co.,Ltd. Patentee after: CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: 430048 No. 11 Jinyinhu Road, Dongxihu District, Wuhan City, Hubei Province Patentee before: The Second Harbor Engineering Co. Patentee before: China Communication 2nd Navigational Bureau 2nd Engineering Co.,Ltd. |
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