CN104675023B - A kind of bellows accurate positioning device - Google Patents
A kind of bellows accurate positioning device Download PDFInfo
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- CN104675023B CN104675023B CN201310632234.3A CN201310632234A CN104675023B CN 104675023 B CN104675023 B CN 104675023B CN 201310632234 A CN201310632234 A CN 201310632234A CN 104675023 B CN104675023 B CN 104675023B
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- bellows
- mould support
- positioning
- bar
- steel
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Abstract
The invention discloses a kind of bellows accurate positioning device, it is related to the technical field that science of bridge building beam slab prefabricated components and Building class Large-span Precast structure use utilizing prestressing force post tensioning method to construct, and it includes box beam reinforcing bar Bench mould support, top latch bar, montant, web distribution bar positioning bar, bellows positioning steel tube and removable pin；The upper lateral of box beam reinforcing bar Bench mould support is evenly arranged with several top latch bars, the both sides of box beam reinforcing bar Bench mould support are evenly arranged with several montants, the side of each montant is evenly arranged with several web distribution bar positioning bars, the opposite side of montant is provided with several bellows positioning steel tubes, the inside of bellows positioning steel tube is plugged with removable pin, and bellows is placed on removable pin.The bellows segmented three-dimensional data of theoretical calculation efficiently can smoothly be realized, are accurately positioned by it, realize that pipeline is smoothed out.
Description
Technical field：
The present invention relates to a kind of bellows accurate positioning device, belong to science of bridge building beam slab prefabricated components and Building class it is big across
Spend the technical field that precast construction uses utilizing prestressing force post tensioning method to construct.
Background technology：
Science of bridge building beam slab prefabricated components and Building class Large-span Precast structure（Such as bent cap）Applied using utilizing prestressing force post tensioning method
In work, by taking box beam as an example, the construction to box girder web, baseplate reinforcing bar skeleton, current state-of-the-art method is using a kind of sizing
Stand（Invention patent certificate 2914586；Application for a patent for invention number 201210507499.6；Patentee is to build Gansu road and bridge
If Group Co., Ltd.The principle of the invention is：Between the manufactured size Bench mould support consistent with framework of steel reinforcement, Bench mould support longitudinal framework
Away from for 0.8m, web hooping positioning bar, web distribution bar positioning bar, bottom plate longitudinal reinforcement position line are provided with Bench mould support；
The reinforcing steel bar part made is installed into colligation according to design and respective position in Bench mould support, box girder integral steel reinforcement framework is formed,
Framework of steel reinforcement is integrally hung by Bench mould support using special hanger again, is located in and treats on prefabricated case beam base.Then according to calculating, people
Work span on framework of steel reinforcement determines the pre-buried locus of bellows, installs bellows, then install box girder formwork, carry out coagulation
Soil is poured, and completes element precast.
From the point of view of practice of construction, Bench mould support method, which processes steel bar framework of box beam and integrally hangs skeleton to move to, treats prefabricated case beam bottom
On seat, with process velocity is fast, good integrity, the characteristics of framework of steel reinforcement qualification rate is high, it is ensured that framework of steel reinforcement total quality, carry
High efficiency, has saved cost.
But because the stand does not consider the installation question of bellows, and bellows secondary installing is in intensive steel
Carried out in muscles and bones frame, regular reinforcement, which avoids bellows, can only carry out and cut off regular reinforcement or bellows is condescended to take this post, and so tear benefit open so that
Installation difficulty is bigger, and it is difficult to ensure that the smooth-going of bellows, unavoidable indivedual places are blocked, partially.Moreover, treating prefabricated case beam base
On, it is both needed to position overall framework of steel reinforcement using traditional artificial inclined-plane pointwise span by single-piece method every time, in this way it is easy to go out
Existing mistake and error so that accuracy is substantially reduced, and is added the off normal of bellows, is condescended to take this post, and it positions qualification rate and substantially reduced, and takes
During expenses of labour.
The content of the invention：
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a kind of bellows accurate positioning device.
The positioner of the present invention, it determines comprising box beam reinforcing bar Bench mould support, top latch bar, montant, web distribution bar
Position muscle, bellows positioning steel tube and removable pin；The upper lateral of box beam reinforcing bar Bench mould support is evenly arranged with several top latch bars,
The both sides of box beam reinforcing bar Bench mould support are evenly arranged with several montants, and the side of each montant is evenly arranged with several web distribution steel
Muscle positioning bar, the opposite side of montant is provided with several bellows positioning steel tubes, and the inside of bellows positioning steel tube is plugged with activity
Pin, bellows is placed on removable pin.
Beneficial effects of the present invention：It efficiently can smoothly realize the bellows segmented three-dimensional data of theoretical calculation,
It is accurately positioned, realizes that pipeline is smoothed out.
Brief description of the drawings：
For ease of explanation, the present invention is described in detail by following specific implementations and accompanying drawing.
Fig. 1 is structural representation of the invention,
Fig. 2 is Fig. 1 left view,
Fig. 3 is Fig. 2 A portions enlarged drawing.
1- box beam reinforcing bar Bench mould supports；2- top latch bars；3- montants；4- web distribution bar positioning bars；5- bellowss are determined
Position steel pipe；6- removable pins；7- bellowss.
Embodiment：
As Figure 1-3, present embodiment uses following technical scheme：It includes box beam reinforcing bar Bench mould support 1, top
Locking-bar 2, montant 3, web distribution bar positioning bar 4, bellows positioning steel tube 5 and removable pin 6；Box beam reinforcing bar Bench mould support 1
Upper lateral is evenly arranged with several top latch bars 2, and the both sides of box beam reinforcing bar Bench mould support 1 are evenly arranged with several montants 3, often
The side of individual montant 3 is evenly arranged with several web distribution bar positioning bars 4, and the opposite side of montant 3 is provided with several bellowss
Positioning steel tube 5, the inside of bellows positioning steel tube 5 is plugged with removable pin 6, and bellows 7 is placed on removable pin 6.
Present embodiment uses following fixing means：
1st, the Bench mould support of steel bar framework of box beam makes and Bench mould support montant pitch requirements
According to steel bar framework of box beam size, design, making Bench mould support, Bench mould support montant spacing is 0.8m.
2nd, bellows single-point three-dimensional position is determined
1）Designing unit is linear there is provided linear equations and computational methods according to prestressing force arrangement, according to linear equations,
Selected spacing segmentation is calculated（As this box beam presses 0.8m）, bellows space coordinate table is formed, design drawing provides ripple
Line tube space coordinates table.
2）Segmented three-dimensional position（Bellows positioning steel tube position）Calculating
The setting-out abscissa x ˊ of bellows positioning steel tube are the horizontal range that Bench mould support center line intends welding position to steel pipe.Steel pipe
Setting-out abscissa x ˊ be equal to steel strand wires design abscissa x.
xˊ=x
According to y in design coordinates table, the setting-out ordinate y ˊ at bellows positioning steel tube center are calculated.
yˊ=y/(cosα)-（D/2）-（d/2）.
Wherein α --- box girder web inclination angle（°）
D --- outside diameter of bel（mm）
D --- removable pin external diameter（mm）
3rd, segmented three-dimensional position is determined
According to the linear arrangement of bellows, by accurately calculating, data will be calculated（X ˊ, y ˊ）Setting-out is on Bench mould support montant.
4th, the welding of bellows positioning steel tube and removable pin are set
On the central point position of the same side setting-out on Bench mould support montant, horizontal welding spreading 10cm, internal diameter are Ф 15mm steel
Pipe, notices that steel pipe answers level, steel pipe is concordant with Bench mould support skeleton towards one end on the inside of Bench mould support（Prevent the framework of steel reinforcement of shaping
Tangle or scratch when hanging out Bench mould support）.
The removable pin for being easy to plug is set in steel pipe, and removable pin uses the straight one-level plain bars of Ф 14（It is slightly less than steel
Pipe diameter, meticulous removable pin is easily tilted）, length is about 40cm ﹝ web thickness（25cm）Protective layer thickness on the inside of-web
（2cm）+ length of steel pipe（10cm）+ plug active length（5cm）=38cm.
5th, bellows is installed and short transverse is accurately positioned
After box girder web, baseplate reinforcing bar skeleton machine-shaping, skeleton stirrup is considered（The regular reinforcement that specification is referred to）
The sequencing installed with bellows, removable pin is inserted in positioning steel tube one by one；Bellows is penetrated from framework of steel reinforcement one end, will
Bellows is placed on removable pin, and elevation location this moment is to be accurately positioned.
6th, bellows is installed and thickness direction is accurately positioned
According to web reinforcement skeleton thickness, bellows is placed in design attitude（It is typically designed as frame center position）, then
Plan-position where the point is accurately positioned.
7th, the accurate of bellows is fixedly secured
In reinforcing steel processing shed, according to the length blanking of groined type spacer bar, and it is fabricated to consistent with bellows width
" Lv " shape neck semi-finished product, the neck is inserted on the bellows in framework of steel reinforcement in removable pin position, bellows is blocked, and
According to position accurate welding of the bellows on web thickness direction on framework of steel reinforcement, then repair welding groined type the 4th steel
Muscle, realization is accurate, fixedly positioning.Now, removable pin completes mission, can remove at any time as needed.
Present embodiment has the advantages that：
1st, the bellows segmented three-dimensional data of theoretical calculation are efficiently achieved by it in construction, and are accurately positioned,
Realize that pipeline is smoothed out, eliminate the mistake and error of manual measurement, it is ensured that bellows qualification rate；
2nd, it according to setting-out of the linear segmentation of bellows and welds sizing on Bench mould support, is available for reusing, it is to avoid
Each single-piece setting-out, so as to save artificial, improves production efficiency；
3rd, bellows and regular reinforcement can install sequencing according to actual conditions adjustment, preferably solve intensive reinforcing bar
Mutual Relationship Between Vessels in net；
4th, bellows is installed simultaneously in Bench mould support with framework of steel reinforcement, and the work in framework of steel reinforcement is all once completed, and
Immigration mould is once hung in realization.Remove secondary again in intensive reinforcing bar the drawbacks of installation bellows from.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of bellows accurate positioning device, it is characterised in that：It includes box beam reinforcing bar Bench mould support (1), top latch bar
(2), montant (3), web distribution bar positioning bar (4), bellows positioning steel tube (5) and removable pin (6)；Box beam reinforcing bar Bench mould support
(1) upper lateral is evenly arranged with several top latch bars (2), and the both sides of box beam reinforcing bar Bench mould support (1) are evenly arranged with number
Individual montant (3), the side of each montant (3) is evenly arranged with several web distribution bar positioning bars (4), montant (3) it is another
Side is provided with several bellows positioning steel tubes (5), and the inside of bellows positioning steel tube (5) is plugged with removable pin (6), bellows
(7) it is placed on removable pin (6)；
Following fixing means is used during positioning：
(1), the Bench mould support of steel bar framework of box beam makes and Bench mould support montant pitch requirements
According to steel bar framework of box beam size, design, making Bench mould support, Bench mould support montant spacing is 0.8m；
(2), bellows single-point three-dimensional position is determined
1) designing unit is linear there is provided linear equations and computational methods according to prestressing force arrangement, according to linear equations, selectes
Spacing segmentation is calculated, and forms bellows space coordinate table, and design drawing provides bellows space coordinate table
2) calculating of segmented three-dimensional position
The setting-out abscissa x ˊ of bellows positioning steel tube are the horizontal range that Bench mould support center line intends welding position to steel pipe.Steel pipe is put
Sample abscissa x ˊ are equal to the design abscissa x of steel strand wires；
X '=x
According to y in design coordinates table, the setting-out ordinate y ' at bellows positioning steel tube center is calculated；
Y ˊ=y/ (cos α)-(D/2)-(d/2)；
Wherein α --- box girder web inclination angle (°)
D --- outside diameter of bel (mm)
D --- removable pin external diameter (mm)
(3), segmented three-dimensional position is determined
According to the linear arrangement of bellows, by accurately calculating, data (x ˊ, y ˊ) setting-out will be calculated on Bench mould support montant；
(4), the welding of bellows positioning steel tube and removable pin are set
On the central point position of the same side setting-out on Bench mould support montant, horizontal welding spreading 10cm, internal diameter are Ф 15mm steel pipe, note
Meaning steel pipe answers level, and steel pipe is concordant with Bench mould support skeleton towards one end on the inside of Bench mould support；The work for being easy to plug is set in steel pipe
Dynamic pin, removable pin uses the straight one-level plain bars of Ф 14, and length is about to be protected on the inside of 40cm ﹝ web thickness (25cm)-web
Covering thickness (2cm)+length of steel pipe (10cm)+plug active length (5cm)=38cm；
(5), bellows is installed and short transverse is accurately positioned
After box girder web, baseplate reinforcing bar skeleton machine-shaping, the sequencing that skeleton stirrup and bellows are installed is considered, will
Removable pin is inserted in positioning steel tube one by one；Bellows is penetrated from framework of steel reinforcement one end, bellows is placed on removable pin, this moment
Elevation location is to be accurately positioned；
(6), bellows is installed and thickness direction is accurately positioned
According to web reinforcement skeleton thickness, bellows is placed in design attitude, then the plan-position where the point is accurately positioned；
(7), the accurate of bellows is fixedly secured
In reinforcing steel processing shed, according to the length blanking of groined type spacer bar, and " Lv " consistent with bellows width is fabricated to
Shape neck semi-finished product, the neck is inserted on the bellows in framework of steel reinforcement in removable pin position, bellows is blocked, and according to
Position accurate welding of the bellows on web thickness direction on framework of steel reinforcement, then repair welding groined type the 4th reinforcing bar, it is real
It is now accurate, fixedly positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632234.3A CN104675023B (en) | 2013-11-29 | 2013-11-29 | A kind of bellows accurate positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310632234.3A CN104675023B (en) | 2013-11-29 | 2013-11-29 | A kind of bellows accurate positioning device |
Publications (2)
| Publication Number | Publication Date |
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| CN104675023A CN104675023A (en) | 2015-06-03 |
| CN104675023B true CN104675023B (en) | 2017-08-04 |
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| CN201310632234.3A Expired - Fee Related CN104675023B (en) | 2013-11-29 | 2013-11-29 | A kind of bellows accurate positioning device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648987A (en) * | 2016-03-23 | 2016-06-08 | 河南省水利勘测设计研究有限公司 | Bidirectional pre-stress U-shaped aqueduct corrugated pipe positioning mesh structure |
| CN108457171A (en) * | 2017-12-25 | 2018-08-28 | 上海公路投资建设发展有限公司 | Steel grouting bellows and its production method for precast assembly bridge pier |
| CN114808729B (en) * | 2022-05-16 | 2023-06-02 | 中铁七局集团有限公司 | Positioning device for pre-buried pre-stress corrugated pipe in box girder |
Citations (4)
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|---|---|---|---|---|
| EP1054106A2 (en) * | 1999-05-17 | 2000-11-22 | Anderson Technology Corporation | Box girder structure for bridge provided with outer cable and method of building the box girder |
| KR20020088472A (en) * | 2001-05-17 | 2002-11-29 | 브이에스엘코리아 주식회사 | construction method of composite steel box bridge |
| CN202627539U (en) * | 2012-04-29 | 2012-12-26 | 葛洲坝集团第五工程有限公司 | Precise positioner for prestressed concrete corrugated pipe |
| CN203613729U (en) * | 2013-11-29 | 2014-05-28 | 甘肃路桥建设集团有限公司 | Corrugated pipe accurate positioning device |
-
2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1054106A2 (en) * | 1999-05-17 | 2000-11-22 | Anderson Technology Corporation | Box girder structure for bridge provided with outer cable and method of building the box girder |
| KR20020088472A (en) * | 2001-05-17 | 2002-11-29 | 브이에스엘코리아 주식회사 | construction method of composite steel box bridge |
| CN202627539U (en) * | 2012-04-29 | 2012-12-26 | 葛洲坝集团第五工程有限公司 | Precise positioner for prestressed concrete corrugated pipe |
| CN203613729U (en) * | 2013-11-29 | 2014-05-28 | 甘肃路桥建设集团有限公司 | Corrugated pipe accurate positioning device |
Non-Patent Citations (1)
| Title |
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| 预制箱梁‘四化’施工技术应用研究;刘宏伟等;《公路交通科技（应用技术版）》;20120315(第3期);第118-119、39页，图3、5-6 * |
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| CN104675023A (en) | 2015-06-03 |
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