CN108677729A - A kind of interim prestressing apparatus for precast segment spliced girder - Google Patents
A kind of interim prestressing apparatus for precast segment spliced girder Download PDFInfo
- Publication number
- CN108677729A CN108677729A CN201810629296.1A CN201810629296A CN108677729A CN 108677729 A CN108677729 A CN 108677729A CN 201810629296 A CN201810629296 A CN 201810629296A CN 108677729 A CN108677729 A CN 108677729A
- Authority
- CN
- China
- Prior art keywords
- interim
- anchor slab
- precast segment
- sleeve
- interim prestressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 238000003892 spreading Methods 0.000 claims description 5
- 230000007480 spreading Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000011513 prestressed concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of interim prestressing apparatus for precast segment spliced girder, prefabricated subsection including contiguous concatenation, interim stretching bed seat is provided on the prefabricated subsection, the interim stretching bed seat includes the anchor slab passed through for interim prestressing force, and the interim prestressing force is anchored by nut and anchor slab.The anchor slab back is provided with floor, and the anchor slab, floor lower end are provided with bottom plate.Interim stretching bed seat, which can be removed, in the present invention uses, and reduces material utilization amount, mitigates segment weight.Middle sleeve of the present invention is embedded in beams of concrete prefabricated subsection, does not have to the trepanning in template, it is ensured that the globality of template reduces the type of template.Sleeve quantity of the present invention is few, and sleeve bolt hole facilitates closure, reduces water permeating of bridge floor risk during operation.Fixing steel plate of the present invention is embedded in inside concrete, and body structure surface facilitates the laying of bridge surface waterproof layer using rubber slab leveling without setting leveling steel plate.
Description
Technical field
The invention belongs to bridge structure building fields, and in particular to a kind of interim prestressing force for precast segment spliced girder
Device.
Background technology
When segmental precast erection method builds prestressed concrete beam construction, the splicing seam between prefabricated subsection needs application one
Fixed interim precompression, makes epoxy resin sealant cure in the case where there is pressure state.Currently used for applying interim prestressed anchor
Solid method mainly has concrete anchor block, embedded U-shaped anchor bolt to move steel pedestal and the removable steel platform in reserved anchoring duct
Three kinds of seat.Concrete anchor block cannot reuse, and increase material cost and construction weight.Embedded U-shaped anchor bolt moves
Steel pedestal, U-shaped anchor bolt stretch out precast concrete segment surface, need the corresponding position in template to drill, influence the entirety of template
Property, and the interim stretching bed seat position of each prefabricated subsection may be inconsistent, increases templating species.Reserved anchoring duct moves
Steel pedestal, later stage duct closure workload is larger, and duct blocks improper easy infiltration.
Invention content
The present invention proposes in order to solve the problems existing in the prior art, a kind of assembled for precast segment the purpose is to provide
The interim prestressing apparatus of beam.
The technical scheme is that：A kind of interim prestressing apparatus for precast segment spliced girder, including adjacent spelling
The prefabricated subsection connect, interim stretching bed seat is provided on the prefabricated subsection, and the interim stretching bed seat includes for answering in advance temporarily
The anchor slab that power passes through, the interim prestressing force are anchored by nut and anchor slab.
The anchor slab back is provided with floor, and the anchor slab, floor lower end are provided with bottom plate.
The prefabricated subsection is beams of concrete prefabricated subsection, and the prefabricated subsection is embedded with fixing steel plate and sleeve, described
It is provided with sleeve on fixing steel plate, forms threaded hole in the sleeve, the sleeve is welded with fixing steel plate.
It is fixed by bolt between the bottom plate, sleeve.
The interim prestressing force is spiral, and the spiral passes through connector spreading.
The rubber slab of leveling is provided between the interim stretching bed seat and prefabricated subsection surface.
The interim prestressing force passes through the through-hole in anchor slab, and the backing plate of enhancing is provided at the anchor slab.
It is emptied in the middle part of the fixing steel plate.
The bolt is located at the outside of floor.
The floor is two pieces and is mutually parallel.
Beneficial effects of the present invention are as follows：
Interim stretching bed seat, which can be removed, in the present invention uses, and reduces material utilization amount, mitigates segment weight.
Middle sleeve of the present invention is embedded in beams of concrete prefabricated subsection, does not have to the trepanning in template, it is ensured that the entirety of template
Property, reduce the type of template.
Sleeve quantity of the present invention is few, and sleeve bolt hole facilitates closure, reduces water permeating of bridge floor risk during operation.
Fixing steel plate of the present invention is embedded in inside concrete, and body structure surface uses rubber slab leveling, without setting leveling steel plate, side
Just the laying of bridge surface waterproof layer.
Description of the drawings
Fig. 1 is the installation artwork of the present invention；
Fig. 2 is the side view of the present invention；
Fig. 3 is the front view of the present invention；
Fig. 4 is the part drawing of fixing steel plate in the present invention；
Wherein：
1 prefabricated subsection, 2 fixing steel plate
3 sleeve, 4 rubber slab
5 bottom plate, 6 anchor slab
7 floor, 8 backing plate
9 bolt, 10 interim prestressing force
11 nut, 12 connector.
Specific implementation mode
Hereinafter, with reference to drawings and examples, the present invention is described in detail：
As shown in Fig. 1 ~ 4, a kind of interim prestressing apparatus for precast segment spliced girder includes the prefabricated subsection of contiguous concatenation
1, interim stretching bed seat is provided on the prefabricated subsection 1, and the interim stretching bed seat includes being passed through for interim prestressing force 10
Anchor slab 6, the interim prestressing force 10 are anchored by nut 12 and anchor slab 6.
6 back of the anchor slab is provided with floor 7, and the anchor slab 6,7 lower end of floor are provided with bottom plate 5.
The prefabricated subsection 1 is beams of concrete prefabricated subsection, and fixing steel plate 2 and sleeve are embedded in the prefabricated subsection 1
3, sleeve 3 is provided on the fixing steel plate 2, forms threaded hole in the sleeve 3, and the sleeve 3 is welded with fixing steel plate 2.
It is fixed by bolt 9 between the bottom plate 5, sleeve 3.
The interim prestressing force 10 is spiral, and the spiral passes through 12 spreading of connector.
The rubber slab 4 of leveling is provided between 1 surface of the interim stretching bed seat and prefabricated subsection.
The interim prestressing force 10 passes through the through-hole in anchor slab 6, and the backing plate 8 of enhancing is provided at the anchor slab 6.
It empties at 2 middle part of the fixing steel plate.
The bolt 9 is located at the outside of floor 7.
The floor 7 is two pieces and is mutually parallel.
Fixed form between the anchor slab 6, floor 7 is welding, the fixation between the bottom plate 5 and anchor slab 6, floor 7
Mode is welding, and the fixed form between the bottom plate 5 and floor 7 is welding.
The floor 7 is trapezoidal shape.
After the interim stretching bed seat is removed, 3 bolt hole of sleeve is carried out at closure using pumping of prostressed duct material
Reason.
One piece of backing plate 8 is welded on the anchor slab 6 increases Out-of Plane Stiffness.Pass through four between stretching bed seat and sleeve 3 temporarily
Bolt 9 connects, and one block of leveling rubber slab 4 is set between 1 body structure surface of each stretching bed seat and prefabricated subsection.Interim prestressing force 10 is adopted
With spiral for prestressed concrete, the interim prestressing force of tensioning is anchored at the tensioning of previous prefabricated subsection 1 by nut 11
On pedestal.When the latter prefabricated subsection 1 is assembled, after spiral for prestressed concrete after 12 spreading of connector by being anchored at
On the stretching bed seat of one prefabricated subsection.
The work progress of the present invention is as follows：
Specific construction step is：
1, fixing steel plate 2 and sleeve 3 are welded to connect, while two pieces of floors 7 are welded after anchor slab 6, and are formed temporarily with the welding of bottom plate 5
Stretching bed seat welds one piece of backing plate 8 on anchor slab 6.
2, precast concrete segment, and built-in location steel plate 2 and sleeve 3 in prefabricated subsection 1.
3, assembled previous prefabricated subsection 1, installs the interim stretching bed seat of the segment, tensioning simultaneously anchors interim prestressing force
10。
4, assembled the latter prefabricated subsection 1, installs the interim stretching bed seat of the segment, interim prestressing force 10 passes through connector
12 spreadings, tensioning and interim prestressing force 10.
5, repeat the above steps 3~step 4, until 1 assembly of all prefabricated subsections finishes.
6, after the permanent prestressing force in segment pulls, interim prestressing force 10 is removed.
7, closure processing is carried out to 3 bolt hole of sleeve using pumping of prostressed duct material.
Interim stretching bed seat, which can be removed, in the present invention uses, and reduces material utilization amount, mitigates segment weight.
Middle sleeve of the present invention is embedded in beams of concrete prefabricated subsection, does not have to the trepanning in template, it is ensured that the entirety of template
Property, reduce the type of template.
Sleeve quantity of the present invention is few, and sleeve bolt hole facilitates closure, reduces water permeating of bridge floor risk during operation.
Fixing steel plate of the present invention is embedded in inside concrete, and body structure surface uses rubber slab leveling, without setting leveling steel plate, side
Just the laying of bridge surface waterproof layer.
Claims (10)
1. a kind of interim prestressing apparatus for precast segment spliced girder includes the prefabricated subsection of contiguous concatenation（1）, feature
It is：The prefabricated subsection（1）On be provided with interim stretching bed seat, the interim stretching bed seat includes supplying interim prestressing force（10）
The anchor slab passed through（6）, the interim prestressing force（10）Pass through nut（12）With anchor slab（6）Anchoring.
2. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 1, it is characterised in that：Institute
State anchor slab（6）Back is provided with floor（7）, the anchor slab（6）, floor（7）Lower end is provided with bottom plate（5）.
3. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 2, it is characterised in that：Institute
State prefabricated subsection（1）For beams of concrete prefabricated subsection, the prefabricated subsection（1）In be embedded with fixing steel plate（2）And sleeve（3）,
The fixing steel plate（2）On be provided with sleeve（3）, the sleeve（3）Middle formation threaded hole, the sleeve（3）With fixing steel plate
（2）Welding.
4. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 3, it is characterised in that：Institute
State bottom plate（5）, sleeve（3）Between pass through bolt（9）It is fixed.
5. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 4, it is characterised in that：Institute
State interim prestressing force（10）For spiral, the spiral passes through connector（12）Spreading.
6. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 5, it is characterised in that：Institute
State interim stretching bed seat and prefabricated subsection（1）The rubber slab of leveling is provided between surface（4）.
7. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 6, it is characterised in that：Institute
State interim prestressing force（10）Across anchor slab（6）In through-hole, the anchor slab（6）Place is provided with the backing plate of enhancing（8）.
8. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 7, it is characterised in that：Institute
State fixing steel plate（2）It empties at middle part.
9. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 8, it is characterised in that：Institute
State bolt（9）Positioned at floor（7）Outside.
10. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 9, it is characterised in that：
The floor（7）For two pieces and it is mutually parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629296.1A CN108677729A (en) | 2018-06-19 | 2018-06-19 | A kind of interim prestressing apparatus for precast segment spliced girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629296.1A CN108677729A (en) | 2018-06-19 | 2018-06-19 | A kind of interim prestressing apparatus for precast segment spliced girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108677729A true CN108677729A (en) | 2018-10-19 |
Family
ID=63811327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810629296.1A Pending CN108677729A (en) | 2018-06-19 | 2018-06-19 | A kind of interim prestressing apparatus for precast segment spliced girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108677729A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235369A (en) * | 2018-11-07 | 2019-01-18 | 中天海洋系统有限公司 | A kind of airproof platform anchor |
| CN109826097A (en) * | 2019-02-18 | 2019-05-31 | 腾达建设集团股份有限公司 | A kind of interim prestressing force implementation method in the section of bridge subsection |
| CN109853398A (en) * | 2019-04-05 | 2019-06-07 | 上海公路桥梁（集团）有限公司 | A kind of interim prestressed structure for Precast Concrete Segmental Bridges formula bridge |
| CN111188276A (en) * | 2020-01-17 | 2020-05-22 | 中铁电气化局集团有限公司 | Segmental beam sliding and assembling construction method |
| CN113512934A (en) * | 2021-07-08 | 2021-10-19 | 中铁第五勘察设计院集团有限公司 | Temporary connection structure of prefabricated spliced bridge and prefabricated beam section |
| CN113756209A (en) * | 2021-10-18 | 2021-12-07 | 湖南省通盛工程有限公司 | Diagonal pulling and pushing construction method for large-span steel beam |
| CN113789811A (en) * | 2021-09-16 | 2021-12-14 | 北京科技大学 | Temporary fastening connection system for prefabricated large components |
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| JP2002201612A (en) * | 2000-12-28 | 2002-07-19 | Taisei Corp | Jig for fixing installing steel member |
| CN103215894A (en) * | 2013-04-26 | 2013-07-24 | 中铁第一勘察设计院集团有限公司 | Mobile temporary prestress tension anchor block |
| CN203411908U (en) * | 2013-08-12 | 2014-01-29 | 中铁二局股份有限公司 | Temporary tensioned prestress anchoring device |
| CN105735134A (en) * | 2016-03-17 | 2016-07-06 | 中交第二航务工程局有限公司 | Temporary tensioning method for stub matching prefabricated box girders |
| CN208545670U (en) * | 2018-06-19 | 2019-02-26 | 中国铁路总公司 | A kind of interim prestressing apparatus for precast segment spliced girder |
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- 2018-06-19 CN CN201810629296.1A patent/CN108677729A/en active Pending
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| JP2002201612A (en) * | 2000-12-28 | 2002-07-19 | Taisei Corp | Jig for fixing installing steel member |
| CN103215894A (en) * | 2013-04-26 | 2013-07-24 | 中铁第一勘察设计院集团有限公司 | Mobile temporary prestress tension anchor block |
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Non-Patent Citations (1)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235369A (en) * | 2018-11-07 | 2019-01-18 | 中天海洋系统有限公司 | A kind of airproof platform anchor |
| CN109235369B (en) * | 2018-11-07 | 2024-04-26 | 中天海洋系统有限公司 | Airtight type platform anchoring device |
| CN109826097A (en) * | 2019-02-18 | 2019-05-31 | 腾达建设集团股份有限公司 | A kind of interim prestressing force implementation method in the section of bridge subsection |
| CN109853398A (en) * | 2019-04-05 | 2019-06-07 | 上海公路桥梁（集团）有限公司 | A kind of interim prestressed structure for Precast Concrete Segmental Bridges formula bridge |
| CN109853398B (en) * | 2019-04-05 | 2024-02-23 | 上海公路桥梁（集团）有限公司 | Temporary pre-stressing structure for prefabricated segment assembly bridge |
| CN111188276A (en) * | 2020-01-17 | 2020-05-22 | 中铁电气化局集团有限公司 | Segmental beam sliding and assembling construction method |
| CN113512934A (en) * | 2021-07-08 | 2021-10-19 | 中铁第五勘察设计院集团有限公司 | Temporary connection structure of prefabricated spliced bridge and prefabricated beam section |
| CN113789811A (en) * | 2021-09-16 | 2021-12-14 | 北京科技大学 | Temporary fastening connection system for prefabricated large components |
| CN113789811B (en) * | 2021-09-16 | 2022-04-26 | 北京科技大学 | Temporary fastening connection system for prefabricated large components |
| CN113756209A (en) * | 2021-10-18 | 2021-12-07 | 湖南省通盛工程有限公司 | Diagonal pulling and pushing construction method for large-span steel beam |
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