CN108914780A - A kind of bridge tall pier and thin wall hydraulic sliding mould construction method - Google Patents
A kind of bridge tall pier and thin wall hydraulic sliding mould construction method Download PDFInfo
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- CN108914780A CN108914780A CN201810875916.XA CN201810875916A CN108914780A CN 108914780 A CN108914780 A CN 108914780A CN 201810875916 A CN201810875916 A CN 201810875916A CN 108914780 A CN108914780 A CN 108914780A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, this method includes：（1）Be poured for the first time concrete with a thickness of 60~70cm, point 3 layers of casting can try to be promoted when bottom concrete reaches 0.2 MPa~0.4 MPa；（2）Before filling concrete, 1 layer of 1: 1 cement mortar should be first poured into mould, thickness about 2~3cm, surrounding is symmetrically poured when concrete enters mould, it is vibrated using poker vibrator, often converts direction of vibrating, avoid directly vibrating pole-climbing and climbing form, vibrator insertion depth must not exceed 50mm in lower-layer concrete, stop vibrating when climbing form is sliding；（3）Just after sliding promotion, every one layer of slow setting soil climbing form of casting is promoted primary；Under normal temperature, when every layer concrete casting is with a thickness of 20cm, the time is promoted no more than 1 hour.High degree of automation, the bridge tall pier and thin wall hydraulic sliding mould construction method that speed is fast, work efficiency is high are realized by the way that pier shaft to be disposably continuously poured into design height the present invention provides a kind of.
Description
Technical field
The present invention relates to the technical field of high pier slding form operation more particularly to a kind of bridge tall pier and thin wall hydraulic sliding mould construction sides
Method.
Background technique
With flourishing for modernization construction and modern engineering technology, occupy in building, architectural engineering and its important
In the construction of the Cast-in-situ Concrete Structural Engineering of status, the variation that climbing form engineering technology has been taken on a completely new look, according to
The technical system of climbing form can divide：Sliding formwork, creeping formwork, climbing form, platform mould-fly mould, tunnel mould, drawing-die and big climbing form
System and early demoulding system etc..
The constructions such as traditional overmolded need a large amount of brackets, need the period to dismount, are taken with material, and manpower consumption is more, and construction speed is slow,
Structural integrity is discontinuous, and safety coefficient is low；It needs to set horizontal construction joint, complex procedures, the continuity of concrete in work progress
Bad and presentation quality is difficult to control；The scaffold and climbing form project amount disposably put into is big, the narrow construction in storehouse number is inconvenient
And the drawbacks such as safety guarantee coefficient is low.Such as in the work progress of high pier, people's row ladder, man lift, worker can be generally set up
The safety devices such as operating platform, overmolded mainly use adapter lug etc. to fix, therefore when removing, after crane has hung template, need
Screw exposed parts are cut away, it is than relatively hazardous that artificial safety belt, which agitates template from side,.
Summary of the invention
It is an object of the invention to overcome the constructions such as above-mentioned traditional overmolded existing in the prior art to need a large amount of brackets, need
Want period dismounting, taken with material, the disadvantage that manpower consumption is more, construction speed is slow, structural integrity is discontinuous and safety coefficient is low and
It provides a kind of by the way that pier shaft to be disposably continuously poured into design height realization high degree of automation, the bridge that speed is fast, work efficiency is high
Beam tall pier and thin wall hydraulic sliding mould construction method.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of bridge tall pier and thin wall hydraulic slip-form is applied
Work method, this method include：
（1）Assemble synovial membrane device：Synovial membrane System Design using hydraulic inside and outside seperated sliding climbing form, including door word hoisting frame,
Climbing form, pole-climbing, jack, upper joist and lower joist, be provided on climbing form be separately mounted to above joist and under
Two enclosures above joist；
（2）It is just sliding：Be poured for the first time concrete with a thickness of 60~70cm, point 3 layers of casting reach 0.2 MPa to bottom concrete
It can try to be promoted when~0.4 MPa, each jack is slowly promoted into 1~2 jack stroke；
（3）Reinforcing bar binding：After die body is in place, reinforcing bar binding is carried out by design, is stood to reinforcing bar using sleeve connection, transverse steel is adopted
It is connected with binding；Synovial membrane pole-climbing is stood for substituting part to reinforcing bar, and is stood to steel bar arrangement in the other side of concrete cover；
One of ribbed stiffener is arranged at interval of 30~50cm, and by upper and lower twice enclosure positioning support, enclosure is welded in joist and subiculum
Liang Shang；
（4）Concrete casting：Before filling concrete, 1 layer of 1: 1 cement mortar, thickness about 2~3cm, concrete should be first poured into mould
When entering mould, surrounding symmetrically to be poured, to prevent the climbing form of climbing form inner concrete non-uniform face from sliding, every layer of table
Face is level, and every thickness degree is about 20~30cm, is vibrated using poker vibrator, often converts direction of vibrating, and avoid
Pole-climbing and climbing form are directly vibrated, vibrator insertion depth must not exceed 50mm in lower-layer concrete, when climbing form is sliding
Stopping is vibrated；
（5）It is normal sliding：Just after sliding promotion, one layer of slow setting soil climbing form promotion of every casting is primary, makes the coagulation of every layer of casting
Soil thickness is identical as the height promoted every time；Under normal temperature, when every layer concrete casting is with a thickness of 20cm, the time is promoted
No more than 1 hour, after concrete perfusion the last layer, climbing form is promoted into 5 ~ 10cm every 1 ~ 2 hour, slides 2 ~ 3 times i.e.
It can.
First cunning can carry out 1~2 jack stroke and be promoted, and by each jack, slowly jacking simultaneously, checks mould concrete
Situation is solidified, when situ appraisal, the concrete surface for the extruding dies that press...with one's finger substantially by motionless, but can be retained and refer to trace, and mortar is not
Viscous hand, marks trace with nail, using the intensity of concrete penetrometer detection concrete, if intensity is met the requirements, i.e. and bottom coagulation
Soil has had the mould unloading strength of 0.2~0.4 MPa, can continue to lift up to 20~40cm, be the 1st layer of casting concrete.
In sliding construction, pole-climbing is no more than 1/4 in same level nipple, and first set pole-climbing arranges 3 kinds, is staggeredly arranged,
When normal sliding, every pole-climbing long 3m or 6m, it is desirable that smooth no scale, when jack is sliding is less than 350mm away from pole-climbing top,
Spreading pole-climbing is answered, connector is aligned, and with the levelling polishing of sander at connector injustice, pole-climbing is the same as the connected reinforcement of weld of ring muscle.
When synovial membrane is constructed, using inductile concrete, the presetting period was controlled at 1.5~3 hours.
Synovial membrane promotion is accomplished vertically, balanced consistent, and the height difference between each hoisting frame is not more than 5cm, every layer concrete casting
Uniform balance is kept, concrete distributing is symmetrical, and reinforcing bar feeding will be divided into according to construction requirement to be deposited on platform in small batches.
After the concrete depanning of synovial membrane construction, concrete surface defect, is repaired in time caused by sliding climbing form,
It should be smoothed out with concrete magma, after surface dressing, brush curing compound is conserved.
Watering floral tube is set in lift hanger, and daily 24 hours wet curings are carried out to the pier shaft concrete after demoulding,
Curing time is not less than 14 days.
The good effect that technical solution of the present invention generates is as follows：Bridge tall pier and thin wall hydraulic sliding mould construction side of the invention
Method not only solves the technologies drawbacks such as some conventional concrete delaminations, scaffold building, climbing form seam, while most important
Be to reduce labor it is advantageously ensured that the presentation quality of concrete, simplify construction technology, accelerate construction progress, reducing construction cost
Power configuration provides sound assurance for construction safety while energy conservation and environmental protection.Slding form operation of the invention has speed fast,
Per day progress 4m or so, and sliding formwork die body structure is simple, light-weight, operating procedure is easy.
Synovial membrane device of the invention, which overcomes in the work progress of the high pier of tradition, to be needed to remove screw, agitates template and easily cause
Dangerous disadvantage, after the template of synovial membrane is in place, sliding, adjustment work are carried out on workbench, and safety coefficient is very high.
Since slding form operation is continuous productive process, template adjustment is easy, so construction speed is 2~3 times of left sides of over-form construction
It is right.3/4ths expense can be saved compared with over-form construction, and since slding form operation progress is fast, hanging device, concrete are transported
The expense of transfer device etc. can all be reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of synovial membrane device hoisting frame of the present invention.
Fig. 2 is the process flow chart of synovial membrane construction method of the present invention.
It is labeled as in figure：1, hoisting frame；2, climbing form；3, jack；4, pole-climbing；5, upper joist；6, lower joist；7, it encloses
Circle.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is to the technical side of bridge tall pier and thin wall hydraulic sliding mould construction method of the present invention
Case is further elaborated.
A kind of bridge tall pier and thin wall hydraulic sliding mould construction method, as shown in Figure 1, 2, the synovial membrane construction method of the present embodiment is
The brace steel post connecting with jack is driven to be lifted up steel platform by the jacking of hydraulic jack, so that steel will be suspended on
Hanger and climbing form on platform are lifted up, the continuously shaped construction method risen in casting.
This method comprises the following steps：
（1）Sliding form apparatus assembling：Hollow pier sliding formwork System Design uses steel construction, using hydraulic inside and outside seperated climbing form,
Sliding form apparatus is mainly made of climbing form system, operation platform system, hydraulic lifting system and Construction precision control system.For
Facilitate and assembled and disassembled between the components such as climbing form, enclosure, operating platform, hoisting frame, design, which is all made of, to be bolted；As described in Figure 1,
Climbing form system includes door word hoisting frame 1, climbing form 2, jack 3, pole-climbing 4, upper joist 5, lower joist 6 and enclosure 7；
Upper joist and lower joist are girder truss, and enclosure is welded on girder truss.
（2）It is just sliding：The thickness for being poured concrete for the first time is generally 60~70cm, and point 3 layers of casting reach to bottom concrete
It can try to rise when 0.2 MPa~0.4 MPa, each jack is slowly promoted into 1~2 jack stroke, it is left probably to jack 5cm
The right side checks the solidification situation of depanning concrete, when situ appraisal, the concrete surface of finger pressing depanning can be used, substantially by not
It is dynamic, but can retain and refer to trace, mortar is tack-free, marks trace with nail, the intensity of concrete penetrometer detection concrete also can be used,
If intensity is met the requirements, i.e. the bottom concrete mould unloading strength that has had the MPa of 0.2 MPa~0.4, can continue to lift up to 20~
40cm or so is the 1st layer of casting concrete.
（3）Reinforcing bar binding：The characteristics of slding form operation is reinforcing bar binding, concreting, the sliding parallel operations of sliding formwork；Die body
After in place, reinforcing bar binding is carried out by design；To guarantee sliding speed, stand to reinforcing bar using sleeve connection, transverse steel is used and tied up
Prick connection；The lap of splice meets design specification requirement, according to the process characteristic of sliding formwork, sliding formwork pole-climbing（Ф48×3.5mm）For
Substitution part is stood to reinforcing bar, and stud is arranged in the other side of concrete cover, to guarantee the smooth of sliding transverse bar in the process
Binding arranges one of ribbed stiffener at interval of 30cm~50cm, and by upper and lower twice enclosure positioning support, enclosure is welded in joist
On lower joist；In sliding construction, pole-climbing is no more than 1/4 in same level nipple（I.e. similar to reinforcing bar in same level
Connector does not allow more than 25%）, 3 kinds of first set pole-climbing arrangement（6m, 3m, 2m), it is staggeredly arranged, when normal sliding, every pole-climbing
Long 3m or 6m, it is desirable that smooth no scale answers spreading pole-climbing, connector pair when jack is sliding is less than 350mm away from pole-climbing top
Together, with the levelling polishing of sander at connector injustice, pole-climbing is the same as the connected reinforcement of weld of ring muscle.
（4）Concreting：Before filling concrete, 1 layer of 1: 1 cement mortar should be first poured into mould, thickness about 2cm~3cm,
When concrete enters mould, surrounding symmetrically to pour, to prevent the climbing form of climbing form inner concrete non-uniform face from sliding,
Every layer surface should be basic horizontal, and every thickness degree is about 20~30cm, and using the horizontal bar of framework of steel reinforcement as object of reference, use is small
The tamping of type interpolation type vibrator, avoids contact with reinforcing bar, support rod and climbing form, is inserted into best in preceding layer compacted concrete
No more than 5cm.
（5）It is normal sliding：Just after sliding promotion, one layer of slow setting soil climbing form promotion of every casting is primary, makes every layer of casting
Concrete thickness is identical as the height promoted every time；Under normal temperature, when every layer concrete casting is with a thickness of 20cm, promoted
Time is no more than 1 hour, and after concrete perfusion the last layer, climbing form is promoted 5 ~ 10cm, sliding 2 ~ 3 every 1 ~ 2 hour
It is secondary.
（6）Correction：Due to the influence of various non-artificial factors in slding form operation, shifts and torsion is inevitable
, when the height especially built is larger, even more obviously, correction is to solve sliding formwork offset and torsion in sliding formwork lifting process
Effective means.In slding form operation, we generally use unbalance loading rectifying method, jack rectifying method, wedge piece rectifying method or bearing
Mandril method.
（7）Carry out next circulation.
（8）It is sliding to be removed to top, sliding device：Sliding form apparatus is removed in tower crane cooperation after the completion of building concrete pours.
When synovial membrane is constructed, using inductile concrete, according to temperature when constructing, the presetting period is controlled at 2 hours or so,
And there is relatively strong and good workability, slump is preferably small unsuitable big under conditions of guaranteeing concrete jolt ramming.Synovial membrane construction is pressed
Following sequence carries out：Blanking-is closed a position-sliding-reinforcing bar binding-blanking of vibrating.Lubricating substance it is sliding require in strict accordance with " layering, fragment,
Symmetrically " it is poured concrete.
Synovial membrane promotion is accomplished vertically, balanced consistent, and the height difference between each hoisting frame is not more than 5cm, every layer concrete casting
Uniform balance is kept, concrete distributing is symmetrical, and reinforcing bar feeding will be divided into according to construction requirement to be deposited on platform in small batches, to prevent
Synovial membrane portion uniform load and tilt, and should at any time to synovial membrane horizontal structure deformation check, to adjust reinforcing in time.
After the concrete depanning of synovial membrane construction, concrete surface defect, is repaired in time caused by sliding climbing form,
It should be smoothed out with concrete magma, after surface dressing, brush curing compound is conserved.
Watering floral tube is set in lift hanger（Plastic tube）, daily spray in 24 hours is carried out to the pier shaft concrete after demoulding
Water curing, curing time are not less than 14 days.
Claims (7)
1. a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：This method includes：
（1）Assemble synovial membrane device：Synovial membrane System Design using hydraulic inside and outside seperated sliding climbing form, including door word hoisting frame,
Climbing form, pole-climbing, jack, upper joist and lower joist, be provided on climbing form be separately mounted to above joist and under
Two enclosures above joist；
（2）It is just sliding：Be poured for the first time concrete with a thickness of 60cm~70cm, point 3 layers of casting reach 0.2 to bottom concrete
It can try to be promoted when MPa~0.4 MPa, each jack is slowly promoted into 1~2 jack stroke；
（3）Reinforcing bar binding：After die body is in place, reinforcing bar binding is carried out by design, is stood to reinforcing bar using sleeve connection, transverse steel is adopted
It is connected with binding；Synovial membrane pole-climbing is stood for substituting part to reinforcing bar, and is stood to steel bar arrangement in the other side of concrete cover；
One of ribbed stiffener is arranged at interval of 30~50cm, and by upper and lower twice enclosure positioning support, enclosure is welded in joist and subiculum
Liang Shang；
（4）Concrete casting：Before filling concrete, 1 layer of 1: 1 cement mortar, thickness about 2cm~3cm, coagulation should be first poured into mould
When soil enters mould, surrounding symmetrically to be poured, to prevent the climbing form of climbing form inner concrete non-uniform face from sliding, every layer
Surface is level, and every thickness degree is about 20~30cm, is vibrated using poker vibrator, often converts direction of vibrating, and keep away
Exempt to directly vibrate pole-climbing and climbing form, vibrator insertion depth must not exceed 50mm in lower-layer concrete, and climbing form is sliding
When stop vibrate；
（5）It is normal sliding：Just after sliding promotion, one layer of slow setting soil climbing form promotion of every casting is primary, makes the coagulation of every layer of casting
Soil thickness is identical as the height promoted every time；Under normal temperature, when every layer concrete casting is with a thickness of 20cm, the time is promoted
No more than 1 hour, after concrete perfusion the last layer, climbing form is promoted into 5 ~ 10cm every 1 ~ 2 hour, slides 2 ~ 3 times i.e.
It can.
2. according to claim 1 a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：First cunning can carry out
1~2 jack stroke is promoted, and by each jack, slowly jacking simultaneously, checks the solidification situation of mould concrete, situ appraisal
When, the concrete surface for the extruding dies that press...with one's finger substantially by motionless, but can be retained and refer to trace, and mortar is tack-free, is marked with nail
Trace, using the intensity of concrete penetrometer detection concrete, if intensity is met the requirements, i.e., bottom concrete has had 0.2 MPa
The mould unloading strength of~0.4 MPa can be continued to lift up to 20~40cm, be the 1st layer of casting concrete.
3. according to claim 1 a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：Sliding construction
In, pole-climbing is no more than 1/4 in same level nipple, and first set pole-climbing arranges 3 kinds, is staggeredly arranged, and when normal sliding, every is climbed
Bar long 3m or 6m, it is desirable that smooth no scale answers spreading pole-climbing, connector pair when jack is sliding is less than 350mm away from pole-climbing top
Together, with the levelling polishing of sander at connector injustice, pole-climbing is the same as the connected reinforcement of weld of ring muscle.
4. according to claim 1 a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：Synovial membrane construction
When, using inductile concrete, the presetting period was controlled at 1.5~3 hours.
5. according to claim 1 a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：Synovial membrane promotion is done
Balanced consistent to vertical, the height difference between each hoisting frame is not more than 5cm, and every layer concrete casting keeps uniform balance, concrete
Cloth is symmetrical, and reinforcing bar feeding will be divided into according to construction requirement to be deposited on platform in small batches.
6. according to claim 1 a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：Synovial membrane construction
After concrete depanning, concrete surface defect, is repaired in time caused by sliding climbing form, should be carried out with concrete magma
It smoothes out, after surface dressing, brush curing compound is conserved.
7. according to claim 1 a kind of bridge tall pier and thin wall hydraulic sliding mould construction method, it is characterised in that：In lift hanger
On set watering floral tube, daily 24 hours wet curings are carried out to the pier shaft concrete after demoulding, curing time is not less than 14 days.
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| CN201810875916.XA CN108914780A (en) | 2018-08-03 | 2018-08-03 | A kind of bridge tall pier and thin wall hydraulic sliding mould construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109610383A (en) * | 2019-01-17 | 2019-04-12 | 中交四公局第十工程有限公司 | A kind of anticollision barrier concreting in cold weather hold over system and its application method |
| CN110413019A (en) * | 2019-07-08 | 2019-11-05 | 武昌理工学院 | The cooling automatic method of lining concrete internal temperature control water flowing and system |
| CN113187484A (en) * | 2021-05-27 | 2021-07-30 | 中电建十一局工程有限公司 | Pressure regulating well rollover construction method |
| CN113373964A (en) * | 2021-07-02 | 2021-09-10 | 中冀建勘集团有限公司 | Pile column continuous construction method in strong corrosion environment |
| CN115354849A (en) * | 2022-08-30 | 2022-11-18 | 河南省水利第一工程局 | Intelligent control system and method for sliding template |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109610383A (en) * | 2019-01-17 | 2019-04-12 | 中交四公局第十工程有限公司 | A kind of anticollision barrier concreting in cold weather hold over system and its application method |
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| CN113187484A (en) * | 2021-05-27 | 2021-07-30 | 中电建十一局工程有限公司 | Pressure regulating well rollover construction method |
| CN113373964A (en) * | 2021-07-02 | 2021-09-10 | 中冀建勘集团有限公司 | Pile column continuous construction method in strong corrosion environment |
| CN115354849A (en) * | 2022-08-30 | 2022-11-18 | 河南省水利第一工程局 | Intelligent control system and method for sliding template |
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Address after: 450001 No. 59 Lianhua street, hi tech Development Zone, Henan, Zhengzhou Applicant after: China Power Construction Eleventh Bureau Engineering Co., Ltd. Applicant after: SINOHYDRO Bureau 11 Co., Ltd. Address before: 450001 No. 59 Lianhua street, hi tech Development Zone, Henan, Zhengzhou Applicant before: China Hydropower eleventh Engineering Bureau (Zhengzhou) Co., Ltd. Applicant before: SINOHYDRO Bureau 11 Co., Ltd. |
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Application publication date: 20181130 |
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