CN104085042A - Construction method for automatic hydraulic assembly and disassembly of internal mold for prefabricating small box beams - Google Patents
Construction method for automatic hydraulic assembly and disassembly of internal mold for prefabricating small box beams Download PDFInfo
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- CN104085042A CN104085042A CN201410338047.9A CN201410338047A CN104085042A CN 104085042 A CN104085042 A CN 104085042A CN 201410338047 A CN201410338047 A CN 201410338047A CN 104085042 A CN104085042 A CN 104085042A
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- construction method
- formwork
- plate
- oil cylinder
- internal mold
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/26—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other
- B28B7/266—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other for making oblong objects, e.g. girders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a construction method for automatic hydraulic assembly and disassembly of an internal mold for prefabricating small box beams. The internal mold comprises a formwork and a formwork action oil cylinder. The construction method includes the following steps that the formwork is formed through assembly according to single segments at an assembly and splicing place; the formwork is lifted and positioned after the appearance and the size of the formwork are checked to be qualified; box beam concrete pouring is conducted; standard segments are disassembled, and gaskets are adjusted; a traveling track is installed, and back edges of a left top plate and a right top plate and a brace rod of the internal mold are disassembled; a left side plate and a right side plate are operated respectively to rotate the oil cylinder, and the left side plate and the right side plate are both made to rotate by 75-85 degrees in the directions close to the left side plate and the right side plate respectively; a lifting oil cylinder is operated, and the formwork is made to rise by the predetermined height of 80-100 mm; a horizontally-moving oil cylinder is operated, and the left side plate and the right side plate are made to slide by 50-80 mm in the opposite directions; the whole formwork is made to move out of a beam body along a sliding base. According to the construction method, overall assembly and disassembly can be achieved, the mechanical construction level is improved, labor consumption is reduced, the construction speed is increased, the construction quality is improved, and the safety risk is also reduced.
Description
Technical field
The present invention relates to bridge prefabrication Construction Technique of Box field, relate in particular to a kind of prefabricated small box girder internal mold automatic hydraulic and pacify the construction method of tearing open.
Background technology
On construction site, the template peace of large-scale precast beam field tears speed open and construction piece effect directly affects the concrete outward appearance of precast beam and inherent quality.Traditional template adopts fritter steel form to be spliced, and its installation rate is slow, and piece is of poor quality, and artificial consumption is large, and presentation quality is not high, and has potential safety hazard, is difficult to meet outward appearance and the inherent quality requirement that bridge structure thing improves day by day.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of simple in structure, can improve the prefabricated small box girder internal mold automatic hydraulic of speed of application and construction quality and pacify the construction method of tearing open.
The present invention for solving the problems of the technologies described above taked technical scheme is:
Prefabricated small box girder internal mold automatic hydraulic is pacified a construction method of tearing open, and described internal mold comprises template and swooping template action oil cylinder, and described construction method comprises the steps:
1) described template is pressed to single segmental assembling in spelling place and be shaped, described template comprises along the symmetrically arranged left roof of little case beam center line and right top board and left plate and right plate; An end of described left roof and right top board is hinged with the end of described left plate and right plate respectively, when described left roof and right top board open and described left plate and right plate enclose interior die topography, described swooping template action oil cylinder comprises and connects respectively at least two rotary oil cylinders of described left roof and left plate and right top board and right plate, drives at least two translation oil cylinders of described left plate and right plate translation and the multiple jacking cylinders for jack entirety respectively;
2) inspection die shape size qualified after by formwork hoisting and location;
3) box beam concrete is built;
4) remove standard sections adjusting pad sheet;
5) walking rails be installed and removed left roof and the strut of right top board back cord and internal mold;
6) operate respectively the rotary oil cylinder of left plate and right plate, make left roof and right top board all towards the direction rotation 75-85 degree near left plate and right plate, can allow like this left roof and right top board be close to left plate and right plate, thereby farthest above top board, reserve enough spaces so that formwork integral rises;
7) operation jacking cylinder, making formwork integral rising predetermined altitude is 80-100mm, even if template all departs from concrete surface;
8) operation translation oil cylinder, makes left plate and right plate all with direction slippage 50-80mm in opposite directions;
9) formwork integral is shifted out to beam body along slide.
In such scheme, step 2) in inspection die shape size also comprise that application of tape carries out the step of encapsulation process to formwork edge joint after qualified.
In such scheme, left roof described in step 6) and right top board are all towards spending near the direction rotation 80 of left plate and right plate.
In such scheme, in step 7), formwork integral rising predetermined altitude is 90mm.
In such scheme, in step 8), left plate and right plate are all with direction slippage 70mm in opposite directions.
In such scheme, the cylinder body external diameter of described rotary oil cylinder is not more than 80mm, and mounting means is that two ends are hinged.
In such scheme, described jacking cylinder quantity has 8, and its mounting means is that cylinder body front end arranges flange connection, and bar head is hinged, and oscillating bearing is set, and described jacking cylinder oil inlet and outlet position is arranged on cylinder body afterbody, and vertical with hinge direction.
In such scheme, the mounting means of described translation oil cylinder is that two ends are hinged, and oscillating bearing is set, and described translation oil cylinder oil inlet and outlet position is parallel with hinge direction.
Compared with prior art, the beneficial effect that the present invention has is:
Prefabricated small box girder internal mold automatic hydraulic provided by the invention is pacified the construction method of tearing open and can entirety automatically be pacified and tear open, has improved mechanized construction level, has reduced artificial consumption, has accelerated speed of application, has improved construction quality simultaneously, has reduced security risk.
Brief description of the drawings
The structural representation of the prefabricated small box girder internal mold that Fig. 1 provides for the embodiment of the present invention.
Fig. 2 is the generalized section of Fig. 1 along C-C direction.
Fig. 3-Fig. 7 is the process schematic diagram that prefabricated small box girder internal mold automatic hydraulic provided by the invention is pacified the construction method of tearing open.
In figure: 1-left roof, the right top board of 2-, 3-left plate, 4-right plate, 5-rotary oil cylinder, 6-translation oil cylinder, 7-internal mold slide, 8-jacking cylinder.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Please also refer to Fig. 1 to Fig. 7, a kind of prefabricated small box girder internal mold automatic hydraulic is pacified the construction method of tearing open, and described internal mold comprises template and swooping template action oil cylinder, and it comprises the steps:
Step 1): described template is pressed to single segmental assembling in spelling place and be shaped, described template comprises along the symmetrically arranged left roof 1 of little case beam center line and right top board 2 and left plate 3 and right plate 4; End of left roof 1 and the end of left plate 3 are hinged, and end of right top board 2 and the end of right plate 4 are hinged; When left roof 1 and right top board 2 open and left plate 3 and right plate 4 enclose interior die topography; Described swooping template action oil cylinder comprises and connects respectively at least two rotary oil cylinders 5 of left roof 1 and left plate 3 bottoms and right top board 2 and right plate 4 bottoms, drives at least two translation oil cylinders 6 of left plate 3 and right plate 4 translations and the multiple jacking cylinders 8 for jack entirety respectively; Described internal mold also comprises internal mold slide 7, operating platform, fixing pipeline and hydraulic power unit, and internal mold slide 7 is positioned at the bottom of internal mold.In the present embodiment, the system pressure of hydraulic power unit is 20MPa, and class of safety protection is IP55, is furnished with thermometer, oil pressure gauge, and each control element effectively connects.
In the present embodiment, internal mold comprises the standard paragraphs, reducer, continuous end adjustment section and the discontinuous section of end-blocking section that set gradually along beam body length direction.
In the present embodiment, described jacking cylinder 8 quantity have 8, and stroke is 120mm, and described jacking cylinder 8 specifications are cylinder diameter, 110mm, bar footpath, 60mm.Cylinder body maximum outside diameter size is less than Φ 150mm.Mounting means is that cylinder body front end arranges flange connection, flange thickness 20mm, and bar head is hinged, and oscillating bearing is set.Brass axle sleeve (sleeve lining processing oil groove) is installed in oscillating bearing.Inner hole of shaft sleeve diameter is Φ 50mm.Hinge plate thickness 55mm.Sleeve length 65mm.Described jacking cylinder 10 oil inlet and outlet positions are vertical with hinge direction, are arranged on cylinder body afterbody.Oil cylinder arranges hydraulic lock, and loculus recovery speed is 50mm/min.(in order to ensure the reliability of each hydraulic jack work, this jacking cylinder is provided with hydraulic lock, before the each group oil cylinder of operation, should first by operating valve, the hydraulic lock of the oil cylinder of beamhouse operation be opened, to strengthen the synchronization extent of hydraulic jack, reduce the damage to template).
In the present embodiment, described rotary oil cylinder 5 appearance and sizes (being cylinder body external diameter) are not more than Φ 80mm, and mounting means is that two ends are hinged, and oscillating bearing is set; Hinge plate thickness 35mm, pin diameter used is Φ 30mm, described rotary oil cylinder 8 oil inlet and outlet positions are parallel with hinge direction.Described rotary oil cylinder 8 arranges hydraulic lock, and loculus recovery speed is 50mm/min.
In the present embodiment, described translation oil cylinder 6 cylinder diameter 60mm, bar footpath 30mm.Mounting means is that two ends are hinged, and oscillating bearing is set, hinge plate thickness 35mm, and pin diameter used is Φ 30mm.Described translation oil cylinder 9 oil inlet and outlet positions are parallel with hinge direction, and oil cylinder arranges hydraulic lock, and loculus recovery speed is 50mm/min.
In the present embodiment, described operating platform and fixing pipeline arrange independent operation platform, and centralized operation is divided into four groups of operating valve groups.Operating valve is all fixed on operating platform.Between operating platform and pipeline in template, adopt flexible pipe to be connected.Connecting hose length is 1.5m, and tube head arranges ready-packaged joint.And described operating platform and fixing pipeline 6 are that a unit arranges pipeline by every joint template (about 7.5m is long), and the pipeline of all oil cylinders is pressed Parallel Design, and pipe end arranges ready-packaged joint.Ready-packaged joint concentrates on template end and is fixed.Between pumping plant and operating platform, adopt 2 flexible pipes to be connected, connected mode is ready-packaged joint.Hose length is 30m.
Step 2): after inspection die shape size is qualified by formwork hoisting and location.Particularly, whether inspection die shape size is qualified, if defective, need process die shape, until qualified.
Step 3): as shown in Figure 3, box beam concrete is built.
Step 4): remove standard sections adjusting pad sheet.
Step 5): walking rails is installed and is removed left roof and the Mechanical stay bar of right top board back cord and internal mold etc.
Step 6): as shown in Figure 4, operate respectively the rotary oil cylinder 5 of left plate and right plate, make left roof 1 and right top board 2 all towards the direction rotation 75-85 degree near left plate 3 and right plate 4, be preferably 80 degree.
Step 7): as shown in Figure 5, operation jacking cylinder 8, making formwork integral rising predetermined altitude is 80-100mm, is preferably 90mm.
Step 8): as shown in Figure 6, operation translation oil cylinder 6, makes left plate 3 and right plate 4 all with direction slippage 50-80mm in opposite directions, is preferably 70mm.
Step 9): as shown in Figure 7, now formwork integral size is less than beam end of body inner cavity size, then formwork integral is shifted out to beam body along slide.
Step 10): secondary spelling template.
Particularly, in work progress, should be noted that following problem:
1, template should first be adjusted in assembled process, in the time that formwork edge joint does not reach requirement, can not complete fastening connecting bolt.
2, template Installation and adjustment is taking bed die as benchmark, needs first bed die to be installed and be adjusted the installation of carrying out again side form after antiarch.
3, because need to adjust beam body length by continuous end end mould, therefore continuously can not be with bolts between end end mould and side form, can only complete side form and hold being connected of mould by upper lower link.In order to ensure the sealing between end mould and side form, in end mould outer rim, need album leave rubber strip to avoid spillage.Usually, the specification of rubber is thick 3 to 4mm, and width is 50mm.
What 4, adopt due to internal mold is rotating shaft connection and bridging arrangement, between each template, may have gap, and therefore, when each section of adjusted size of template completes after, application of tape is carried out encapsulation process to formwork edge joint, to reduce the possible of spillage.
5, the joint of each section of internal mold is concentrated setting the one end that is positioned at template, in the time that template is carried out stripping operation, need to be connected with mobile operating platform, therefore in the time of installation form, should be noted that concentrating tip side need to be placed on template shifts out end.In the time carrying out the construction of end bay beam, because beam body front of motor is what shut, internal mold can only go out from link sidesway, therefore respectively save in template, have one end of concentrated joint need be arranged on connect distolateral, so internal mold need to arrange specially while construction, have headed by the internal mold of half across beam and in share across beam, second half internal mold be tail across beam and in shared across beam.
6, be generally the reliability of guaranteeing each hydraulic jack work, can on rotary oil cylinder 5 and jacking cylinder 8, hydraulic lock be all installed.In the time carrying out the hydraulic operation of the template demoulding, need first by operating valve, hydraulic lock to be opened, increase the synchronism of oil cylinder, reduce the infringement to template.
Prefabricated small box girder internal mold automatic hydraulic provided by the invention is pacified the construction method of tearing open and can entirety automatically be pacified and tear open, has improved mechanized construction level, has reduced artificial consumption, has accelerated speed of application, has improved construction quality simultaneously, has reduced security risk.
It should be noted that, those of ordinary skill in the art should be appreciated that and can modify or be equal to replacement technical scheme of the present invention, and do not depart from aim and the scope of technical solution of the present invention, and it all should be encompassed in the middle of claim scope of the present invention.
Claims (8)
1. prefabricated small box girder internal mold automatic hydraulic is pacified a construction method of tearing open, and described internal mold comprises template and swooping template action oil cylinder, it is characterized in that: described construction method comprises the steps:
1) described template is pressed to single segmental assembling in spelling place and be shaped, described template comprises along the symmetrically arranged left roof of little case beam center line and right top board and left plate and right plate; An end of described left roof and right top board is hinged with the end of described left plate and right plate respectively, when described left roof and right top board open and described left plate and right plate enclose interior die topography, described swooping template action oil cylinder comprises and connects respectively at least two rotary oil cylinders of described left roof and left plate and right top board and right plate, drives at least two translation oil cylinders of described left plate and right plate translation and the multiple jacking cylinders for jack entirety respectively;
2) inspection die shape size qualified after by formwork hoisting and location;
3) box beam concrete is built;
4) remove standard sections adjusting pad sheet;
5) walking rails be installed and removed left roof and the strut of right top board back cord and internal mold;
6) operate respectively the rotary oil cylinder of left plate and right plate, make left roof and right top board all towards the direction rotation 75-85 degree near left plate and right plate;
7) operation jacking cylinder, making formwork integral rising predetermined altitude is 80-100mm;
8) operation translation oil cylinder, makes left plate and right plate all with direction slippage 50-80mm in opposite directions;
9) formwork integral is shifted out to beam body along slide.
2. construction method as claimed in claim 1, is characterized in that: step 2) in inspection die shape size also comprise that application of tape carries out the step of encapsulation process to formwork edge joint after qualified.
3. construction method as claimed in claim 1, is characterized in that: left roof described in step 6) and right top board are all towards spending near the direction rotation 80 of left plate and right plate.
4. construction method as claimed in claim 1, is characterized in that: in step 7), formwork integral rising predetermined altitude is 90mm.
5. construction method as claimed in claim 1, is characterized in that: in step 8), left plate and right plate are all with direction slippage 70mm in opposite directions.
6. construction method as claimed in claim 1, is characterized in that: the cylinder body external diameter of described rotary oil cylinder is not more than 80mm, and mounting means is that two ends are hinged.
7. construction method as claimed in claim 1, is characterized in that: described jacking cylinder quantity has 8, and its mounting means is that cylinder body front end arranges flange connection, bar head is hinged, oscillating bearing is set, and described jacking cylinder oil inlet and outlet position is arranged on cylinder body afterbody, and vertical with hinge direction.
8. construction method as claimed in claim 1, is characterized in that: the mounting means of described translation oil cylinder is that two ends are hinged, and oscillating bearing is set, and described translation oil cylinder oil inlet and outlet position is parallel with hinge direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410338047.9A CN104085042A (en) | 2014-07-16 | 2014-07-16 | Construction method for automatic hydraulic assembly and disassembly of internal mold for prefabricating small box beams |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410338047.9A CN104085042A (en) | 2014-07-16 | 2014-07-16 | Construction method for automatic hydraulic assembly and disassembly of internal mold for prefabricating small box beams |
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| CN104085042A true CN104085042A (en) | 2014-10-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105365042A (en) * | 2015-09-25 | 2016-03-02 | 佛山路桥预制构件有限公司 | Manufacturing method of small prefabricated box girder |
| CN109366700A (en) * | 2018-12-03 | 2019-02-22 | 中交二公局第工程有限公司 | Dismount the trolley and its assembly and disassembly methods of prefabricated case beam overall shrinkage formula hydraulic internal mold |
| CN110126082A (en) * | 2019-02-26 | 2019-08-16 | 北京市政路桥股份有限公司 | A kind of concrete box girder internal model stripper apparatus and release method |
| CN113650138A (en) * | 2020-10-29 | 2021-11-16 | 怀化市众建机械钢模制造有限公司 | Easy dismouting type contraction type cast concrete case roof beam centre form |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4040447B2 (en) * | 2002-12-13 | 2008-01-30 | オリエンタル白石株式会社 | Wagen formwork device for strut box girder, strut support device, and method for constructing strut box girder |
| CN201609922U (en) * | 2010-02-05 | 2010-10-20 | 浙江永峰模具制造有限公司 | Pull type prefabricated small box girder iron core |
| CN101885206A (en) * | 2010-07-02 | 2010-11-17 | 中铁四局集团第四工程有限公司 | Hydraulic internal mold truss type walking track system of high speed railway prefabricating box girder |
| CN102189595A (en) * | 2011-04-14 | 2011-09-21 | 湖南中铁五新钢模有限责任公司 | Guide pillar type hydraulic internal mold for straight web plate box girder |
-
2014
- 2014-07-16 CN CN201410338047.9A patent/CN104085042A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4040447B2 (en) * | 2002-12-13 | 2008-01-30 | オリエンタル白石株式会社 | Wagen formwork device for strut box girder, strut support device, and method for constructing strut box girder |
| CN201609922U (en) * | 2010-02-05 | 2010-10-20 | 浙江永峰模具制造有限公司 | Pull type prefabricated small box girder iron core |
| CN101885206A (en) * | 2010-07-02 | 2010-11-17 | 中铁四局集团第四工程有限公司 | Hydraulic internal mold truss type walking track system of high speed railway prefabricating box girder |
| CN102189595A (en) * | 2011-04-14 | 2011-09-21 | 湖南中铁五新钢模有限责任公司 | Guide pillar type hydraulic internal mold for straight web plate box girder |
Non-Patent Citations (1)
| Title |
|---|
| 蔡泓: "高速铁路客运专线预制箱梁液压缩放内模研究", 《铁道建筑技术》, no. 01, 31 January 2007 (2007-01-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105365042A (en) * | 2015-09-25 | 2016-03-02 | 佛山路桥预制构件有限公司 | Manufacturing method of small prefabricated box girder |
| CN109366700A (en) * | 2018-12-03 | 2019-02-22 | 中交二公局第工程有限公司 | Dismount the trolley and its assembly and disassembly methods of prefabricated case beam overall shrinkage formula hydraulic internal mold |
| CN110126082A (en) * | 2019-02-26 | 2019-08-16 | 北京市政路桥股份有限公司 | A kind of concrete box girder internal model stripper apparatus and release method |
| CN113650138A (en) * | 2020-10-29 | 2021-11-16 | 怀化市众建机械钢模制造有限公司 | Easy dismouting type contraction type cast concrete case roof beam centre form |
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