CN203213022U - Mobile temporary prestress tensioning anchor block - Google Patents
Mobile temporary prestress tensioning anchor block Download PDFInfo
- Publication number
- CN203213022U CN203213022U CN 201320218732 CN201320218732U CN203213022U CN 203213022 U CN203213022 U CN 203213022U CN 201320218732 CN201320218732 CN 201320218732 CN 201320218732 U CN201320218732 U CN 201320218732U CN 203213022 U CN203213022 U CN 203213022U
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- anchor
- base plate
- anchor block
- prestressed
- plates
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Abstract
The utility model relates to a mobile temporary prestress tensioning anchor block. Concrete anchor blocks are utilized for temporary prestress tensioning of a conventional precast segment assembled bridge, cannot be moved or reutilized, and are large in weight and not beneficial to stress of the precast segment assembled bridge. The mobile temporary prestress tensioning anchor block is provided with a baseplate which is fixed on a precast segment box girder via an embedded fixing piece, two opposite anchor plates are vertically welded on the baseplate, two rib plates perpendicular to the anchor plates are welded between the anchor plates, anchor plate through holes provided with penetrating prestressing thick steel bars are formed in the anchor plates, the prestressing thick steel bars are penetratingly arranged among four anchor plates of two anchor blocks on two adjacent precast segment box girders, and ends of the prestressing thick steel bars are anchored on the anchor plates at far ends of the two adjacent anchor plates via prestressing thick steel bar bundling wires. The mobile temporary prestress tensioning anchor block is simple in structure, large in rigidity, low in cost, convenient to construct, assemble and disassemble, movable, capable of being reutilized repeatedly and good in universality.
Description
Technical field
The utility model belongs to road traffic construction technique field, is specifically related to the interim prestressed stretch-draw anchor block of a kind of movable type.
Background technology
The job practices of glueing joint seam formula precast segment assembly unit bridge is that the some sections unit that vertically the beam body is divided into along bridge carries out batch production production, be transported to bridge location more piecemeal, carry out assembly unit at traversing carriage bridge fabrication machine or the mobile indigo plant of hanging, the assembly unit seam adopts epoxy sealing between each sections, between sections by the compacted epoxy resin sealant of the interim prestressing force of stretch-draw, connect into each prefabricated subsection as a whole by the permanent prestressing force of stretch-draw then, remove interim stretch-draw prestressing force, finish the construction of a sections or a hole beam, so circulation is finished until the full-bridge construction.
At present, the interim prestressed stretch-draw of conventional precast segment assembly unit bridge adopts concrete anchor block, can not move repeatedly recycling, and concrete anchor block weight is big, and is stressed unfavorable to the precast segment spliced girder.In concrete anchor block, also need bury ground tackle, spiral bar and reserving hole channel underground, the sequence of construction complexity, utilization rate of equipment and installations is low, and economy is not high, is difficult for after the bridge moulding removing, and aesthetic property is poor, also is unfavorable for environmental protection.
Summary of the invention
The purpose of this utility model provides a kind of for precast segment assembly unit bridge, the interim prestressed stretch-draw anchor block of the reusable movable type of dismantled and assembled movement.
The technical scheme that the utility model adopts is:
The interim prestressed stretch-draw anchor block of a kind of movable type is characterized in that:
Described anchor block is provided with base plate, base plate is fixed on the prefabricated subsection case beam by pre-buried firmware, plate upper surface uprightly is welded with two relative anchor slabs, is welded with two floors perpendicular to anchor slab between the anchor slab, and anchor slab is provided with the anchor slab through hole that wears prestressed thick reinforcement.
Described pre-buried firmware comprises pre-embedded bolt and the bolt nut of pre-buried leveling steel plate, U-shaped;
Pre-buried leveling steel plate is preset in the prefabricated subsection case beam of floor below, be provided with the bolt duct of position correspondence on base plate and the pre-buried leveling steel plate, be preset in that pre-embedded bolt in the prefabricated subsection case beam passes both bolt ducts and the bolt nut of base plate top fixes.
Described floor and base plate welding are fixing.
Described prestressed thick reinforcement is located in four anchor slabs of two anchor blocks on the adjacent two joint prefabricated subsection case beams, and the termination of prestressed thick reinforcement is pricked silk by prestressed thick reinforcement and is anchored on the anchor slab of adjacent two anchor block far-ends.
The utlity model has following advantage:
Anchor block simple structure, rigidity that the utility model adopts are big, and dismantled and assembled movement repeatedly reuses, easy construction, and economy is higher; versatility is good, has saved prestressed anchor backing plate and spiral bar, and prestressing force is anchoring on the anchor block anchor slab directly; steel using amount is economized, and more is conducive to environmental protection, saves investment.
Description of drawings
Fig. 1 is that anchor block is at the cross sectional arrangement figure of prefabricated subsection box girder tensioning anchoring.
Fig. 2 is that anchor block is at the side arrangement figure of prefabricated subsection box girder tensioning anchoring.
Fig. 3 is anchor block elevation (II-II sectional view).
Fig. 4 is anchor block lateral view (I-I sectional view).
Among the figure, the 1-floor, the 2-bolt nut, the 3-base plate, the pre-buried leveling steel plate of 4-, the 5-pre-embedded bolt, 6-prefabricated subsection case beam, 7-anchor slab, 8-prestressed thick reinforcement are pricked silk anchor, 9-prestressed thick reinforcement.
The specific embodiment
Below in conjunction with the specific embodiment the utility model is described in detail.
The interim prestressed stretch-draw anchor block of a kind of movable type that the utility model is related is provided with base plate 3, and base plate 3 is fixed on the prefabricated subsection case beam 6 by pre-buried firmware.Pre-buried firmware comprises pre-embedded bolt 5 and the bolt nut 2 of pre-buried leveling steel plate 4, U-shaped, pre-buried leveling steel plate 4 is preset in the prefabricated subsection case beam 6 of base plate 3 belows, be provided with the bolt duct of position correspondence on base plate 3 and the pre-buried leveling steel plate 4, be preset in that pre-embedded bolt 5 in the prefabricated subsection case beam 6 passes both bolt ducts and the bolt nut 2 of base plate 3 tops fixes.Pre-embedded bolt 5 can arrange many groups, and as shown in Figure 2 four groups are strengthened the fixed effect of anchor block on prefabricated subsection case beam 6.
The construction sequence of the portable interim prestressed stretch-draw anchor block that the utility model is related is as described below:
Default pre-embedded bolt 5 and pre-buried leveling steel plate 6 when 1, box girder segment is prefabricated.
2, press the design attitude perforate at the ready base plate 3 of blanking and anchor slab 7, and base plate 3, floor 1, anchor slab 7 soldering group are combined into a whole anchor block.
3, steel being made up anchor block is installed on the prefabricated subsection case back plate and base plate that needs stretch-draw prestressing force by pre-embedded bolt 5 and bolt nut 2.
4, the pre-assembly unit of prefabricated subsection case beam puts in place, after finishing joint face epoxy resin and smearing, wears prestressed thick reinforcement 9, is stretched to prestressed thick reinforcement to designing stretching force, and prestressed thick reinforcement is pricked a silk anchor 8.
5, after whole hole beam assembly unit is finished, behind the permanent prestressing force of stretch-draw, remove whole anchor block, according to step 2 circulation until, all beam sections assembly units are finished.
When the interim prestressing force of stretch-draw, mobile anchor block is fixed on the prefabricated subsection case beam by pre-buried firmware, removes and move to the next interim prestressed sections of the stretch-draw position that needs after stretch-draw is finished.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model manual is claim of the present utility model and contains.
Claims (4)
1. interim prestressed stretch-draw anchor block of movable type is characterized in that:
Described anchor block is provided with base plate (3), base plate (3) is fixed on the prefabricated subsection case beam (6) by pre-buried firmware, base plate (3) upper surface uprightly is welded with two relative anchor slabs (7), be welded with two floors (1) perpendicular to anchor slab (7) between the anchor slab (7), anchor slab (7) is provided with the anchor slab through hole that wears prestressed thick reinforcement (9).
2. the interim prestressed stretch-draw anchor block of a kind of movable type according to claim 1 is characterized in that:
Described pre-buried firmware comprises pre-embedded bolt (5) and the bolt nut (2) of pre-buried leveling steel plate (4), U-shaped;
Pre-buried leveling steel plate (4) is preset in the prefabricated subsection case beam (6) of base plate (3) below, be provided with the bolt duct of position correspondence on base plate (3) and the pre-buried leveling steel plate (4), the pre-embedded bolt (5) that is preset in the prefabricated subsection case beam (6) passes both bolt ducts, and the bolt nut (2) of base plate (3) top fixes.
3. the interim prestressed stretch-draw anchor block of a kind of movable type according to claim 1 and 2 is characterized in that:
Described floor (1) is fixing with base plate (3) welding.
4. the interim prestressed stretch-draw anchor block of a kind of movable type according to claim 3 is characterized in that:
Described prestressed thick reinforcement (9) is located in four anchor slabs (7) of last two anchor blocks of adjacent two joint prefabricated subsection case beams (6), and the termination of prestressed thick reinforcement (9) is pricked silk anchor (8) by prestressed thick reinforcement and is fixed on the anchor slab (7) of adjacent two anchor block far-ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218732 CN203213022U (en) | 2013-04-26 | 2013-04-26 | Mobile temporary prestress tensioning anchor block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320218732 CN203213022U (en) | 2013-04-26 | 2013-04-26 | Mobile temporary prestress tensioning anchor block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203213022U true CN203213022U (en) | 2013-09-25 |
Family
ID=49202571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320218732 Expired - Lifetime CN203213022U (en) | 2013-04-26 | 2013-04-26 | Mobile temporary prestress tensioning anchor block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203213022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109468946A (en) * | 2018-04-12 | 2019-03-15 | 上海公路投资建设发展有限公司 | A kind of steel construction temporary fastening device and technique for large-scale bent cap free cantilever erection |
-
2013
- 2013-04-26 CN CN 201320218732 patent/CN203213022U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103215894B (en) * | 2013-04-26 | 2015-10-28 | 中铁第一勘察设计院集团有限公司 | Portable interim prestressed stretch-draw anchor block |
| CN109468946A (en) * | 2018-04-12 | 2019-03-15 | 上海公路投资建设发展有限公司 | A kind of steel construction temporary fastening device and technique for large-scale bent cap free cantilever erection |
| CN109468946B (en) * | 2018-04-12 | 2024-04-12 | 上海公路投资建设发展有限公司 | Steel structure temporary fixing device and process for large-scale bent cap cantilever assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA RAILWAY FIRST SURVEY + DESIGN INSTITUTE GROU Effective date: 20150610 Owner name: CHINA RAILWAY CORPORATION Free format text: FORMER OWNER: CHINA RAILWAY FIRST SURVEY + DESIGN INSTITUTE GROUP CO., LTD. Effective date: 20150610 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150610 Address after: 100844 No. 10 Fuxing Road, Haidian District, Beijing, Haidian District Patentee after: CHINA RAILWAY Corp. Patentee after: CHINA RAILWAY FIRST SURVEY AND DESIGN INSTITUTE GROUP Co.,Ltd. Address before: 710043 Shaanxi province Xi'an Xiying Road No. two Patentee before: CHINA RAILWAY FIRST SURVEY AND DESIGN INSTITUTE GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |