CN106930194B - Inter-tie and pier stud global formation construction method and template used holder - Google Patents
Inter-tie and pier stud global formation construction method and template used holder Download PDFInfo
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- CN106930194B CN106930194B CN201710326849.1A CN201710326849A CN106930194B CN 106930194 B CN106930194 B CN 106930194B CN 201710326849 A CN201710326849 A CN 201710326849A CN 106930194 B CN106930194 B CN 106930194B
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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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Abstract
Inter-tie of the present invention and pier stud global formation construction method and template used holder, belong to highway bridge pier stud and inter-tie construction method technical field；The technical issues of solution is to provide a kind of inter-tie and upper pier stud, the construction method of lower pier stud one-time-concreting global formation and template used holder；The technical solution used for：Inter-tie and pier stud global formation construction method, 1, installation pier stud reinforcing bar；2, between stake binder reinforcing bar binding, formwork erection and concreting；3, disposably installation is complete for the template of upper and lower pier stud and inter-tie；4, the concrete one-piece casting of upper and lower pier stud, inter-tie；5, the dismounting of upper Pier Formwork, inter-tie template and lower Pier Formwork；Inter-tie and pier stud global formation falsework, the upper end of two hounds are connected to the middle part of inter-tie template bed die bottom surface, and the lower end of two hounds links together with a Pier Formwork respectively, and drag link is horizontally set between two Pier Formworks.
Description
Technical field
Inter-tie of the present invention and pier stud global formation construction method and template used holder, belong to highway bridge pier stud with
Inter-tie construction method technical field.
Background technology
Recently as constantly putting into operation for each standard highway, highway bridge also a large amount of application therewith.At present in public affairs
In the design of road and bridge beam, it is column pier that it is most of, which to be less than 30m designs, for the lower height of bridge, generally by holding in pile foundation
Platform（Binder between stake）, pillar pier shaft, inter-tie（When pier stud is higher）It is formed with bent cap.Advantage is to mitigate pier shaft dead weight, section
About masonry material, relatively beautiful, rigidity and intensity are all larger, can be used in having the river of drift and floating ice.Carry out
All it was the construction for first carrying out lower pier stud in the past when having the bridge lower part of inter-tie to construct, simultaneously form removal is completed in the construction of lower pier stud
Hold Hoop method, Support Method is used to carry out the construction of inter-tie afterwards.
Anchor ear in Hold Hoop method is generally made of two blocks of semicircular arc steel plates, is connected by high-strength bolt.Anchor ear lock ring exists
The frictional force generated on pier stud provides the reaction of bearing of superstructure, is main support force structure.It is set up on anchor ear flat
Platform carries out the construction of inter-tie and upper pier stud.This construction method has the following disadvantages：
1, project progress is affected；
2, engineering cost increases；
3, the stubble that connects of upper pier stud and lower pier stud easy tos produce faulting of slab ends, spillage.
Support Method is usually to set up holder on inter-tie lower ground after the completion of lower pier stud pours, and is carrying out intercolumniation
The installation of binder template.There is also deficiencies identical with Hold Hoop method for this method.
Invention content
The present invention overcomes the shortcomings of the prior art, technical problem to be solved be provide a kind of inter-tie with it is upper
Pier stud, the construction method of lower pier stud one-time-concreting global formation and template used holder.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：Inter-tie is applied with pier stud global formation
Work method carries out as steps described below：
The first step installs pier stud reinforcing bar：The steel bar meter of passed examination, binding are shaped and installed；
Second step carries out reinforcing bar binding, formwork erection and the concreting of binder between stake；
Third walks, and after binder form removal between stake, carries out the formwork erection of upper and lower pier stud and inter-tie, and upper and lower pier stud
Disposably installation is complete with the template of inter-tie；
When making binder bed die with upper and lower Pier Formwork, setting steel plate and prepared screw-bolt hole in corresponding position, by pre-
The bolt hole installation hound and drag link stayed；
4th step carries out the concrete one-piece casting of upper and lower pier stud, inter-tie；
5th step first carries out Pier Formwork and inter-tie side when pier stud concrete strength reaches 2.5MPa or more
The dismounting of mould carries out the dismounting of inter-tie bed die and lower Pier Formwork when concrete strength reaches the 75% of design strength.
In the first step, before pier stud reinforcement installation, pile foundation top concrete need to be cleaned, to ensure the whole of pier shaft and pile foundation
Body, pier stud reinforcing bar are fixed, to ensure the stability of pier stud steel reinforcement cage using three cable wind ropes after installation is complete.
In third step, the formwork erection of upper and lower pier stud and inter-tie the specific steps are：
The formwork erection for first carrying out lower pier stud, under making when Pier Formwork, due to height of the inter-tie away from binder between stake
Degree is different, so need to the length of common template be determined according to the size of drawing, and adjusting section is made, to ensure the height of inter-tie
Range request；Drag link after the completion of lower Pier Formwork installs between installation pier stud；
Then the installation of inter-tie bed die is carried out, the inter-tie bed die is integral to improve bed die support force,
First two hounds are connected firmly with inter-tie bed die before lifting inter-tie bed die, the upper end of two hounds is solid
It is scheduled on the middle part of inter-tie bed die, and is tilted and is symmetrical arranged with 45° angle；After lifting in place, using high-strength bolt by intercolumniation system
The adjusting section of beam bottom board and lower Pier Formwork is attached to form an entirety；
Inter-tie bed die stitches position after installation is complete during the lower part of hound is connected on the inside of lower Pier Formwork, uses
Pressure after supporting inter-tie concreting under；
Then inter-tie reinforcing bar binding is carried out, the branch of inter-tie side form and upper Pier Formwork is carried out after the completion of binding
If；
After the completion of whole formwork support arrangements, air hardening steel rope is pulled according to 3-4 roads of height setting, is tightened with jack, to control mould
The verticality of plate and the stability for ensureing template.
In 4th step, under concreting when pier stud, when concreting is close to inter-tie, by concrete
The slump controls the lower limit in design value, when pouring inter-tie concrete, while pour with its level pier stud, and make pier
Concrete in column is slightly above inter-tie 10-20cm of top of concrete, after the completion of inter-tie pours, to inter-tie top
Surface concrete surface carries out receipts surface treatment, after the completion of receiving surface treatment, carries out pouring for pier stud, is pouring upper pier stud concrete
When, the slump of concrete is controlled into the lower limit in design value, while slowing down speed of perfusion, to prevent concrete from inter-tie
Top surface is overflowed, and upper pier stud concrete is carried out according to code requirement after inter-tie concrete is not influenced by upper pier stud concrete
Pour, until reaching the design altitude of pier stud.
In 5th step, after upper Pier Formwork and the dismounting of inter-tie side form, dampness is in concrete surface
When, using plastic film that pier shaft exposure surface concrete package is tight rapidly, plastic film remains intact during package, that
This overlap joint is complete；
After inter-tie bed die and lower Pier Formwork are removed, water tank is placed in pier top, water storage pot bottom is arranged aperture, makes
Water in water tank slowly oozes out, to ensure pier stud surface wettability.
Inter-tie and pier stud global formation falsework, including Pier Formwork, inter-tie template, hound and horizontal drawing
Bar, inter-tie template are fixed between two Pier Formworks, and bolt is provided in the middle part of bed die bottom surface in inter-tie template
Hole is also equipped with bolt hole on two Pier Formworks, and the upper end of two hounds is bolted at inter-tie template bottom
The middle part of mould bottom surface, two hounds are symmetrical arranged for oblique 45° angle, and the lower ends of two hounds is by bolt respectively with one
A Pier Formwork links together, and drag link is horizontally set between two Pier Formworks, and is connected by bolt and Pier Formwork
It is connected together；The drag link is located at the lower section of two hounds, and three constitutes an isosceles right triangle.
The structure of the hound is：Body of rod both ends are respectively fixed with a circle chimb, and multiple spiral shells are provided on the chimb
Keyhole；
The structure of the drag link is：Body of rod both ends are respectively fixed with a circle chimb, and multiple spiral shells are provided on the chimb
Keyhole.
Bolt hole in the hound and drag link on each chimb is four.
The present invention has the advantages that compared with prior art.
1, inter-tie and pier stud one-time-concreting global formation are accelerated construction speed by the present invention.
2, present invention eliminates the anchor ears or holder in conventional method so that engineering cost is reduced.
3, of the invention by inter-tie and pier stud global formation so that upper not will produce faulting of slab ends, leakage between pier stud, lower pier stud
Slurry, ensure that construction quality, and appearance looks elegant.
Description of the drawings
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural schematic diagram of inter-tie and pier stud global formation falsework.
Fig. 2 is bed die bolt hole on underside schematic diagram in inter-tie template.
Fig. 3 is Pier Formwork bolt hole schematic diagram.
Fig. 4 is the structural schematic diagram of hound.
Fig. 5 is the structural schematic diagram of diagonal brace rod end surface.
Fig. 6 is the structural schematic diagram of drag link.
Fig. 7 is the structural schematic diagram of drag link end face.
In figure：1 is Pier Formwork, and 2 be inter-tie template, and 3 be hound, and 4 be drag link.
Specific implementation mode
As shown in Fig. 1-Fig. 7, inter-tie of the present invention and pier stud global formation falsework, including Pier Formwork 1, intercolumniation
Binder template 2, hound 3 and drag link 4, inter-tie template 2 are fixed between two Pier Formworks 1, inter-tie template 2
It is provided with bolt hole in the middle part of middle bed die bottom surface, bolt hole, the upper end of two hounds 3 are also equipped on two Pier Formworks 1
The middle part in 2 bed die bottom surface of inter-tie template is bolted, two hounds 3 are symmetrical arranged for oblique 45° angle, and two
The lower end of root hound 3 is linked together with a Pier Formwork 1 respectively by bolt, and drag link 4 is horizontally set on two piers
Between column template 1, and linked together by bolt and Pier Formwork 1；The drag link 4 is located at the lower section of two hounds 3,
Three constitutes an isosceles right triangle.
The structure of the hound 3 is：Body of rod both ends are respectively fixed with a circle chimb, and multiple spiral shells are provided on the chimb
Keyhole；
The structure of the drag link 4 is：Body of rod both ends are respectively fixed with a circle chimb, and multiple spiral shells are provided on the chimb
Keyhole.
Bolt hole in the hound 3 and drag link 4 on each chimb is four.
Before formally construct, need to carry out following preparations.
1, it confides a technological secret to construction personnel before the engineering construction of bridge lower part, the scheme that project management department is formulated carries out layer
Layer is told somebody what one's real intentions are, and the details of inter-tie and pier stud global formation accomplishes that everybody knows what's what, and understands the emphasis ring of this construction technology
Section.
2, site safety administrative staff have to pass through the training of high standard, and have abundant safety management experience, right
Construction personnel carries out safe practice three-level and tells somebody what one's real intentions are, and accomplishes that everybody signs archive.
3, the quality of cement, rubble and the sand marched into the arena strictly is controlled, field laboratory tests according to regulation frequency, right
Appearance is firmly removed in defective material.Bedding plant and mixing station periphery are hardened using concrete, prevent soil and sundries
Into influencing concrete quality in sand material.
4, to using in the concrete of pier stud and inter-tie standard mix design is carried out in qualified third party.Work
Ground laboratory and chief inspector do laboratory and are verified to standard mix, to ensure the quality of concrete.
After the completion of above-mentioned preparation, inter-tie of the present invention and pier stud global formation construction method, as steps described below
It carries out：
The first step installs pier stud reinforcing bar：By the reinforcing bar of passed examination, in reinforcement yard's processing, binding forming, then by
Wooden handcart is transported to pier position and nearby installs, and items processing and binding index are strictly controlled in tolerance according to corresponding job specfication
Within, cover to reinforcement is using cushion block to ensure protective layer thickness；Before pier stud reinforcement installation, pile foundation top concrete need to be cleaned,
To ensure the globality of pier shaft and pile foundation, pier stud reinforcing bar is fixed, to ensure pier stud using three cable wind ropes after installation is complete
The stability of steel reinforcement cage；
Second step carries out reinforcing bar binding, formwork erection and the concreting of binder between stake, and work progress is in strict accordance with rule
Model and design requirement carry out；
Third walks, and after binder form removal between stake, carries out the formwork erection of upper and lower pier stud and inter-tie, and upper and lower pier stud
Disposably installation is complete with the template of inter-tie；
When making binder bed die with upper and lower Pier Formwork, setting steel plate and prepared screw-bolt hole in corresponding position, by pre-
The bolt hole installation hound and drag link stayed；
The formwork erection of upper and lower pier stud and inter-tie the specific steps are：
The formwork erection of lower pier stud is first carried out, pier body formwork uses the large volume punching block of factory process sizing（δ=5mm）,
Using bolt（φ=20mm）Connection.
Under making when Pier Formwork, since inter-tie is away from being depth of beam difference between stake, so need to be according to drawing
Size determines the length of common template, and makes adjusting section, to ensure the high range request of inter-tie；Lower Pier Formwork has installed
At the drag link between rear installation pier stud；In addition, template face seam highness change, in 1mm, flatness controls in 2mm, pier shaft
Template carries on the back a tree, used in making timber for boats in length and breadth using shaped steel, and 0.3cm male and female wedges are arranged in template during the production and processing, forms hoop with fixation, branch hold mode
Plate, it is ensured that template will not misplace, deform, spillage；
It should conscientiously polish totally in lower Pier Formwork Zhi Liqian, brushing releasing agent uses double faced adhesive tape grout cover in assembly
It is clipped at form joint with mortar leakage prevention；It is accurately put before formwork support arrangement and sets structure outer contour and by substrate cement screeding, look for
Flat control errors ensure that the verticality after template is spelled meets code requirement in 2mm；Template assembly uses hand fit's crane,
Consider that suspension centre deforms to prevent lifting in stencil design；One section template of often lifting is to check the verticality and geometric form of a template
Shape, the upper layers errorless rear Xu Pin；The adjusting section of lower Pier Formwork must be placed in bottom, to ensure hound with 45 degree of connection intercolumniations
Binder bed die and lower Pier Formwork；Template is corrected when installing with plumb bob；
Then the installation of inter-tie bed die is carried out, the inter-tie bed die is integral to improve bed die support force,
First two hounds are connected firmly with inter-tie bed die before lifting inter-tie bed die, the upper end of two hounds is solid
It is scheduled on the middle part of inter-tie bed die, and is tilted and is symmetrical arranged with 45° angle；After lifting in place, using high-strength bolt by intercolumniation system
The adjusting section of beam bottom board and lower Pier Formwork is attached to form an entirety；
Inter-tie bed die stitches position after installation is complete during the lower part of hound is connected on the inside of lower Pier Formwork, uses
Pressure after supporting inter-tie concreting under；
Then inter-tie reinforcing bar binding is carried out, is carried out according to drawing requirement size when binding, while meeting job specfication
Requirement, binding completes and carries out installing for inter-tie side form and upper Pier Formwork, institute after the assay was approved through supervising engineer
It is all made of set shaped steel formwork with template, template installation detection project should all reach code requirement；
After the completion of whole formwork support arrangements, air hardening steel rope is pulled according to 3-4 roads of height setting, is tightened with jack, to control mould
The verticality of plate and the stability for ensureing template；
4th step carries out the concrete one-piece casting of upper and lower pier stud, inter-tie；
It needs first to set up workbench at the top of pier stud, setting deceleration tumbling barrel prevents concrete to reduce concrete height of drop and speed
Segregation phenomenon occurs, tumbling barrel bottom is no more than 2m away from concrete surface；Pier shaft concrete uses coagulation in adjacent blending station concentrated compactness
Native tank vehicle is transported to behind construction site enters mould with crane lifting；When construction, collapsed according to the suitably adjustment of the transportation range of concrete, weather condition
Degree of falling, slump-loss should be fully considered before construction；Concrete does appearance identification and slump detection before entering mould, meets design and wants
Asking could use；Concrete by thickness no more than 30cm symmetrically blanking pours concrete when, avoid unilateral buildup, ensure concrete pair four in mould
Side molding pressure is substantially uniform, balances, to avoid unilateral buildup causes the side concrete lateral pressure bigger than normal and leads to template deformation, shifting
Position；Concrete is vibrated using poker vibrator, and adjacent interlayer joins the 10cm~20cm that vibrates, and direction of vibrating is recycled from middle to side, is shaken
It smashes uniformly；In concrete pouring, it is ensured that the continuity poured pays special attention to the deformation of template in pouring, sends special messenger on duty
It checks.
Under concreting when pier stud, when concreting is close to inter-tie, the slump control of concrete is existed
The lower limit of design value, when pouring inter-tie concrete, while pour with its level pier stud, and make the concrete in pier stud
Slightly above 10-20cm of inter-tie top of concrete, after the completion of inter-tie pours, to inter-tie top surface concrete surface
Receipts surface treatment is carried out, after the completion of receiving surface treatment, pouring for pier stud is carried out, when pouring upper pier stud concrete, by concrete
The slump controls the lower limit in design value, while slowing down speed of perfusion, to prevent concrete from being overflowed from inter-tie top surface, waits for column
Between binder concrete do not influenced by upper pier stud concrete after according to code requirement carry out pouring for upper pier stud concrete, until reaching
To the design altitude of pier stud；
5th step first carries out Pier Formwork and inter-tie side when pier stud concrete strength reaches 2.5MPa or more
The dismounting of mould, it is using plastic film that pier shaft exposure surface concrete package is tight rapidly when concrete surface is in dampness
Close, plastic film remains intact during package, laps one another complete；When concrete strength reaches the 75% of design strength,
The dismounting of inter-tie bed die and lower Pier Formwork is carried out, and water tank is placed in pier top, water storage pot bottom is arranged aperture, makes storage
Water in water pot slowly oozes out, to ensure pier stud surface wettability.
The cost analysis of the present invention is carried out below.
The present invention accelerates construction speed, shortens the duration under the premise of ensuring the construction quality, and reduces in construction
Material, machinery, labour cost, saved management cost.
The benefit of the method for the present invention and traditional anchor ear construction method is compared by taking across a pier stud construction as an example below：
Claims (4)
1. inter-tie and pier stud global formation construction method, it is characterised in that carry out as steps described below：
The first step installs pier stud reinforcing bar：The steel bar meter of passed examination, binding are shaped and installed；
Second step carries out reinforcing bar binding, formwork erection and the concreting of binder between stake；
Third walks, and after binder form removal between stake, carries out the formwork erection of upper and lower pier stud and inter-tie, and upper and lower pier stud and column
Between the template of binder disposable installation is complete；
When making binder bed die with upper and lower Pier Formwork, in corresponding position, setting steel plate and prepared screw-bolt hole, pass through what is reserved
Bolt hole installs hound and drag link；
The formwork erection of upper and lower pier stud and inter-tie the specific steps are：
The formwork erection for first carrying out lower pier stud, under making when Pier Formwork, due to inter-tie away from be between stake depth of beam not
Together, so need to the length of common template be determined according to the size of drawing, and adjusting section is made, to ensure that the elevation of inter-tie is wanted
It asks；Drag link after the completion of lower Pier Formwork installs between installation pier stud；
Then the installation of inter-tie bed die is carried out, the inter-tie bed die is integral to improve bed die support force, lifting
First two hounds are connected firmly with inter-tie bed die before inter-tie bed die, the upper end of two hounds is fixed on
The middle part of inter-tie bed die, and tilted and be symmetrical arranged with 45° angle；After lifting in place, using high-strength bolt by inter-tie bottom
The adjusting section of mould and lower Pier Formwork is attached to form an entirety；
Inter-tie bed die stitches position after installation is complete during the lower part of hound is connected on the inside of lower Pier Formwork, for branch
Pressure after support inter-tie concreting under；
Then inter-tie reinforcing bar binding is carried out, installing for inter-tie side form and upper Pier Formwork is carried out after the completion of binding；
After the completion of whole formwork support arrangements, air hardening steel rope is pulled according to 3-4 roads of height setting, is tightened with jack, to control template
Verticality and the stability for ensureing template；
4th step carries out the concrete one-piece casting of upper and lower pier stud, inter-tie；
5th step first carries out Pier Formwork and inter-tie side form when pier stud concrete strength reaches 2.5MPa or more
It removes, when concrete strength reaches the 75% of design strength, carries out the dismounting of inter-tie bed die and lower Pier Formwork.
2. inter-tie according to claim 1 and pier stud global formation construction method, it is characterised in that：The first step
In, before pier stud reinforcement installation, pile foundation top concrete need to be cleaned, to ensure the globality of pier shaft and pile foundation, pier stud reinforcement installation
After the completion, it is fixed using three cable wind ropes, to ensure the stability of pier stud steel reinforcement cage.
3. inter-tie according to claim 1 or 2 and pier stud global formation construction method, it is characterised in that：Described
In four steps, under concreting when pier stud, when concreting is close to inter-tie, the slump control of concrete is being set
The lower limit of evaluation, when pouring inter-tie concrete, while pour with its level pier stud, and the concrete in pier stud is made to omit
Higher than inter-tie 10-20cm of top of concrete, after the completion of inter-tie pours, to inter-tie top surface concrete surface into
Row receives surface treatment, after the completion of receiving surface treatment, pouring for pier stud is carried out, when pouring upper pier stud concrete, by collapsing for concrete
Degree of falling controls the lower limit in design value, while slowing down speed of perfusion, to prevent concrete from being overflowed from inter-tie top surface, waits for intercolumniation
Binder concrete according to code requirement carries out pouring for upper pier stud concrete after not influenced by upper pier stud concrete, until reaching
The design altitude of pier stud.
4. inter-tie according to claim 1 or 2 and pier stud global formation construction method, it is characterised in that：Described
In five steps, after upper Pier Formwork and the dismounting of inter-tie side form, when concrete surface is in dampness, plastics are used rapidly
Film is tight by pier shaft exposure surface concrete package, and plastic film remains intact during package, laps one another complete；
After inter-tie bed die and lower Pier Formwork are removed, water tank is placed in pier top, water storage pot bottom is arranged aperture, makes water storage
Water in tank slowly oozes out, to ensure pier stud surface wettability.
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| CN110700105B (en) * | 2019-10-21 | 2021-04-20 | 中交一公局第七工程有限公司 | Synchronous construction method for high pier column and tie beam and template used in same |
| CN111455858A (en) * | 2020-04-23 | 2020-07-28 | 安徽省路港工程有限责任公司 | Integral pouring construction method for column pier |
| CN112030750A (en) * | 2020-07-17 | 2020-12-04 | 中交一公局集团有限公司 | Construction process for tie beam in water |
| CN112726409B (en) * | 2020-12-29 | 2022-11-01 | 中铁一局集团有限公司 | Hoisting device for bridge water surface pile tie beam and construction method thereof |
| CN114892530B (en) * | 2022-05-22 | 2023-10-03 | 中建八局第二建设有限公司 | Arc body combined formwork supporting structure of ultrahigh double-layer arc tie beam and construction method |
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