CN208545670U - 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
- CN208545670U CN208545670U CN201820942832.9U CN201820942832U CN208545670U CN 208545670 U CN208545670 U CN 208545670U CN 201820942832 U CN201820942832 U CN 201820942832U CN 208545670 U CN208545670 U CN 208545670U
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- interim
- anchor slab
- sleeve
- precast segment
- prefabricated subsection
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Abstract
The utility model 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 utility model uses, and reduces material utilization amount, mitigates segment weight.The utility model middle sleeve is embedded in beams of concrete prefabricated subsection, does not have to the aperture in template, it is ensured that the globality of template reduces the type of template.The utility model sleeve quantity is few, and sleeve bolt hole facilitates closure, reduces water permeating of bridge floor risk during operation.The utility model fixing steel plate is embedded in inside concrete, and body structure surface is leveled using rubber slab, without setting leveling steel plate, facilitates the laying of bridge surface waterproof layer.
Description
Technical field
The utility model belongs to bridge structure building field, and in particular to a kind of for the interim pre- of precast segment spliced girder
Stress device.
Background technique
When segmental precast erection method builds prestressed concrete beam construction, the splicing seam between prefabricated subsection needs to apply one
Fixed interim precompression, solidifies epoxy resin sealant in the case where there is pressure state.Currently used for applying interim prestressed anchor
The removable steel platform that solid method mainly has concrete anchor block, embedded U-shaped anchor bolt to move steel pedestal and 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 to drill in the corresponding position of template, 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 period duct blocks larger workload, and duct blocks improper easy infiltration.
Summary of the invention
The utility model proposes in order to solve the problems existing in the prior art, a kind of for precast segment the purpose is to provide
The interim prestressing apparatus of spliced girder.
The technical solution of the utility model is: a kind of interim prestressing apparatus for precast segment spliced girder, including phase
The prefabricated subsection of neighbour's splicing, interim stretching bed seat is provided on the prefabricated subsection, and the interim stretching bed seat includes for interim
The anchor slab that prestressing force 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 and fixing steel plate weld.
It is fixed between the bottom plate, sleeve by bolt.
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 parallel to each other.
The beneficial effects of the utility model are as follows:
Interim stretching bed seat, which can be removed, in the utility model uses, and reduces material utilization amount, mitigates segment weight.
The utility model middle sleeve is embedded in beams of concrete prefabricated subsection, does not have to the aperture in template, it is ensured that template
Globality reduces the type of template.
The utility model sleeve quantity is few, and sleeve bolt hole facilitates closure, reduces water permeating of bridge floor risk during operation.
The utility model fixing steel plate is embedded in inside concrete, and body structure surface is leveled using rubber slab, without setting leveling steel
Plate facilitates the laying of bridge surface waterproof layer.
Detailed description of the invention
Fig. 1 is the installation artwork of the utility model；
Fig. 2 is the side view of the utility model；
Fig. 3 is the front view of the utility model；
Fig. 4 is the part drawing of fixing steel plate in the utility model；
Wherein:
1 prefabricated subsection, 2 fixing steel plate
3 sleeve, 4 rubber slab
5 bottom plate, 6 anchor slab
7 floor, 8 backing plate
The interim prestressing force of 9 bolt 10
11 nut, 12 connector.
Specific embodiment
Hereinafter, the utility model is described in detail referring to drawings and examples:
As shown in Fig. 1 ~ 4, a kind of interim prestressing apparatus for precast segment spliced girder, including the prefabricated of contiguous concatenation
Segment 1, interim stretching bed seat is provided on the prefabricated subsection 1, and the interim stretching bed seat includes wearing for interim prestressing force 10
The anchor slab 6 crossed, the interim prestressing force 10 are anchored by nut 12 and anchor slab 6.
6 back of 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, is embedded with fixing steel plate 2 and sleeve 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 between the bottom plate 5, sleeve 3 by bolt 9.
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 is emptied in the middle part of the fixing steel plate 2.
The bolt 9 is located at the outside of floor 7.
The floor 7 is two pieces and is parallel to each other.
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 interim stretching bed seat and sleeve 3
Bolt 9 connects, and sets one block of leveling rubber slab 4 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 utility model is as follows:
Specific construction step are as follows:
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 welded and formed with bottom plate 5
Interim 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 all 1 assembly of prefabricated subsection finish.
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 utility model uses, and reduces material utilization amount, mitigates segment weight.
The utility model middle sleeve is embedded in beams of concrete prefabricated subsection, does not have to the aperture in template, it is ensured that template
Globality reduces the type of template.
The utility model sleeve quantity is few, and sleeve bolt hole facilitates closure, reduces water permeating of bridge floor risk during operation.
The utility model fixing steel plate is embedded in inside concrete, and body structure surface is leveled using rubber slab, without setting leveling steel
Plate facilitates the laying of bridge surface waterproof layer.
Claims (10)
1. a kind of interim prestressing apparatus for precast segment spliced girder, the prefabricated subsection (1) including contiguous concatenation, feature
It is: is provided with interim stretching bed seat on the prefabricated subsection (1), the interim stretching bed seat includes supplying interim prestressing force (10)
The anchor slab (6) passed through, the interim prestressing force (10) are anchored by nut (11) and anchor slab (6).
2. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 1, it is characterised in that: institute
It states anchor slab (6) back to be provided with floor (7), the anchor slab (6), floor (7) lower end are 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
Stating prefabricated subsection (1) is beams of concrete prefabricated subsection, is embedded with fixing steel plate (2) and sleeve (3) in the prefabricated subsection (1),
It is provided with sleeve (3) on the fixing steel plate (2), forms threaded hole, the sleeve (3) and fixing steel plate in the sleeve (3)
(2) it welds.
4. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 3, it is characterised in that: institute
It states and is fixed between bottom plate (5), sleeve (3) by bolt (9).
5. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 4, it is characterised in that: institute
Stating interim prestressing force (10) is spiral, and 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 the rubber slab (4) that leveling is provided between interim stretching bed seat and prefabricated subsection (1) surface.
7. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 6, it is characterised in that: institute
The through-hole of interim prestressing force (10) in anchor slab (6) is stated, the backing plate (8) of enhancing is provided at the anchor slab (6).
8. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 7, it is characterised in that: institute
It states and is emptied in the middle part of fixing steel plate (2).
9. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 8, it is characterised in that: institute
State the outside that bolt (9) is located at floor (7).
10. a kind of interim prestressing apparatus for precast segment spliced girder according to claim 9, it is characterised in that:
The floor (7) is two pieces and is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820942832.9U CN208545670U (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 |
|---|---|---|---|
| CN201820942832.9U CN208545670U (en) | 2018-06-19 | 2018-06-19 | A kind of interim prestressing apparatus for precast segment spliced girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208545670U true CN208545670U (en) | 2019-02-26 |
Family
ID=65422890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820942832.9U Active CN208545670U (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) | CN208545670U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677729A (en) * | 2018-06-19 | 2018-10-19 | 中国铁路总公司 | A kind of interim prestressing apparatus for precast segment spliced girder |
| 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 |
| CN110158487A (en) * | 2019-06-04 | 2019-08-23 | 中铁九局集团第七工程有限公司 | It is glued assembling construction engineering method in single-track railway simple supported box beam segment |
-
2018
- 2018-06-19 CN CN201820942832.9U patent/CN208545670U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677729A (en) * | 2018-06-19 | 2018-10-19 | 中国铁路总公司 | A kind of interim prestressing apparatus for precast segment spliced girder |
| 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 |
| CN110158487A (en) * | 2019-06-04 | 2019-08-23 | 中铁九局集团第七工程有限公司 | It is glued assembling construction engineering method in single-track railway simple supported box beam segment |
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