CN108331239A - Post-tensioned prestressing plate and application method - Google Patents
Post-tensioned prestressing plate and application method Download PDFInfo
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- CN108331239A CN108331239A CN201810346754.0A CN201810346754A CN108331239A CN 108331239 A CN108331239 A CN 108331239A CN 201810346754 A CN201810346754 A CN 201810346754A CN 108331239 A CN108331239 A CN 108331239A
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- plate
- plate body
- anchorage
- pore passage
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a kind of post-tensioned prestressing plate and application methods, including plate body, several not interlaced prestressed pore passages are reserved in plate body, each prestressed pore passage is independent shuttles in plate, under prestressed pore passage both ends it is curved and run through plate body downside, plate body downside is provided with anchorage in side outside the end of each prestressed pore passage, steel wire rope is worn in prestressed pore passage, steel wire rope carries out tensioning by the anchorage at both ends and generates prestressing force, the high-strength bolt with its screw-thread fit is provided on anchorage, steel wire rope both ends with the high-strength bolt on the anchorage on the outside of the prestressed pore passage both ends respectively by being connected, the configuration of the present invention is simple, strong applicability can both carry out tensioning before building comes into operation, it can also be after building use, bearing load carries out prestressed stretch-draw again when changing, meet the requirement of building renovation.
Description
Technical field
The present invention relates to a kind of post-tensioned prestressing plate and application methods.
Background technology
With the fast development of China's economy, there is large quantities of skyscrapers and large span, heavy load, multi-functional
Building.More stringent requirements are proposed to comfortable, environment, function and quality for building, and especially to floor, more stringent requirements are proposed：
Span reaches 9m or so, to ensure larger depth and the standard width of a room in an old-style house, realizes flexible isolation；Load reaches 10KN/m2 or so, it is sufficient to prop up
Hold partition wall weight and other working loads；It must assure that the crack of control floor.In addition, building structure gradually to greatly across, heavy duty,
Multifunctional direction develops, and traditional prestressed cored slab is all that pre-tensioning system produces, and prefabricated board traditional at present has been difficult to meet
Above-mentioned requirements.
Invention content
A kind of post-tensioned prestressing plate of present invention proposition and application method.
Scheme is a kind of post-tensioned prestressing plate used by the present invention solves technical problem, including plate body, is reserved in plate body
Have several not interlaced prestressed pore passages, each prestressed pore passage be it is independent shuttle in plate, prestressed pore passage two
Under end it is curved and run through plate body downside, plate body downside is provided with anchorage in side outside the end of each prestressed pore passage, answers in advance
Steel wire rope is worn in power duct, steel wire rope carries out tensioning by the anchorage at both ends and generates prestressing force, is provided with and its spiral shell on anchorage
Line cooperation high-strength bolt, steel wire rope both ends respectively by with the high-strength bolt phase on the anchorage on the outside of the prestressed pore passage both ends
Connection.
Further, plate body is prefabricated plate body or cast-in-place plate body.
Further, prestressed pore passage grouting blocks.
Further, anchorage includes horizonal base plate, and middle part is provided with vertical plate on horizonal base plate, is horizontally disposed on vertical plate
There are screw hole, high-strength bolt to wear screw hole and therewith screw-thread fit.
Further, vertical plate is provided with several vertical through-holes on horizonal base plate, plate body is interior vertical at anchorage installation
It is provided with pre-embedded bolt, pre-embedded bolt lower end wears vertical through-hole, and pre-embedded bolt lower end connects anchorage and plate body through locking nut
Connect locking.
Further, horizonal base plate is connected and fixed by the bar planting being implanted into plate body with plate body.
A kind of method for stretching of post-tensioned prestressing plate：Before tensioning, anchorage is connect with plate body, by high-strength bolt and anchor
Tool connection, high-strength bolt inner end connect the steel wire rope that is stretched out by prestressed pore passage end, by turn high-strength bolt to reinforcing bar into
Row tensioning generates prestressing force, after the completion of tensioning, is in the milk to prestressed pore passage, and pour sealing end concrete, finally in plate body
Downside is painted, and external anchorage steel wire rope is covered.
Compared with prior art, the invention has the advantages that：It is simple in structure, strong applicability, easy for construction, cost
Rationally, tensioning can be both carried out before building comes into operation；It can also be after building use, bearing load carries out pre- again when changing
Stress tension meets the requirement of building renovation.
Description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the floor map of plate body；
Fig. 2 is the diagrammatic cross-section of plate body；
Fig. 3 is tensioning rear plate body bottom plan view；
Fig. 4 is anchorage concrete structure schematic diagram.
In figure：
1- plate bodys；2- prestressed pore passages；3- bar plantings；4- steel wire ropes；5- anchorages；501- horizonal base plates；502- vertical plates；6- is high-strength
Screw rod.
Specific implementation mode
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figs 1-4, a kind of post-tensioned prestressing plate, including plate body are reserved in plate body several not interlaced pre-
Stress duct, each prestressed pore passage be it is independent shuttle in plate, it is curved under prestressed pore passage both ends and on the downside of plate body
Face, plate body downside are provided with anchorage in side outside the end of each prestressed pore passage, steel wire rope, steel are worn in prestressed pore passage
Cord carries out tensioning by the anchorage at both ends and generates prestressing force, and the high-strength bolt with its screw-thread fit, steel wire are provided on anchorage
Both ends restrict respectively by being connected with the high-strength bolt on the anchorage on the outside of the prestressed pore passage both ends, high-strength bolt is between anchor
Connector between tool and steel wire rope is high-strength, and one end and the anchorage of screw rod are fixed, and the other end is connect with steel wire rope, and high-strength bolt must
Intensity requirement when tensioning construction must be met.
In the present embodiment, plate body is prefabricated plate body or cast-in-place plate body.
In the present embodiment, when plate body is prefabricated board, there are the prestressed pore passages for carrying out corresponding tensioning when prefabricated；Plate body
For Bars In Poured Concrete Slab when, when cast-in-place in template the advance pre-buried prestressed pore passage penetrated for steel wire rope（Here plate size itself and
Concrete strength can be designed according to different force requests, it is ensured that plate intensity itself can bear prestressing force and outside
Load）, after intensity as defined in concrete reaches, then penetrate prestress rope into prestressed pore passage and carry out tensioning and anchor
Gu finally carrying out duct grouting, and pour sealing end concrete.
In the present embodiment, prestressed pore passage grouting blocks.
In the present embodiment, anchorage includes horizonal base plate, and middle part is provided with vertical plate on horizonal base plate, horizontal on vertical plate
It is provided with screw hole, high-strength bolt wears screw hole and therewith screw-thread fit.
In the present embodiment, vertical plate is provided with several vertical through-holes on horizonal base plate, plate body is interior at anchorage installation
It is vertically arranged with pre-embedded bolt, pre-embedded bolt lower end wears vertical through-hole, and pre-embedded bolt lower end is through locking nut by anchorage and plate
Body connection locking.
In the present embodiment, horizonal base plate is connected and fixed by the bar planting being implanted into plate body with plate body.
In the present embodiment, plate body is concrete plate body.
In the present embodiment, prestressed pore passage designs the prestress hole for meeting stress condition according to different requirements
Road includes the run trace in duct, pore size and material etc..While assembling reinforcement, prestress pipe is put in advance
Set in prestress rope corresponding position, prestressed pore passage cannot overlap between each other, each duct be it is independent shuttle in
In plate, protection work is carried out before pouring, by line clogging, concrete strength reaches after requirement i.e. spillage when avoiding casting concrete
Steel wire rope lashing and tensioning can be carried out, carries out pipeline pneumatic mortar after the completion.
In the present embodiment, steel wire rope is born according to the shape size of plate and plate load situation determines its specification, length
Degree, run trace.Steel wire rope beam penetrates duct after concrete strength reaches certain design strength, can also be used in house
It passes through good prestressed pore passage pre-buried in advance to carry out tensioning in journey, requirement is reached with this.
In the present embodiment, anchorage is distributed in two ends of prestressed pore passage, and is symmetrically distributed in plate bottom surface, anchorage
Specification, shape, system and prestressed pore passage correspond to, and meet prestressed stretch-draw requirement.The horizonal base plate of anchorage lower part be for
Prevent when tensioning that concrete stress is excessively concentrated and generates destruction at anchorage, stress spread when by tensioning to plate body
Concrete in, improve end stress, anchorage is fixed with concrete plate body by bar planting or pre-embedded bolt.Tensioning is completed
Afterwards, anchorage application sealing end concrete protective should take the measure for preventing corrosion when needing long-term exposed.
A kind of method for stretching of post-tensioned prestressing plate：Before tensioning, anchorage is connect with plate body, in order to prevent
Concrete stress is excessively concentrated and generates destruction at anchorage when tensioning, stress spread when by tensioning to plate body concrete
In, improve end stress, high-strength bolt is connect with anchorage, high-strength bolt inner end connects the steel stretched out by prestressed pore passage end
Cord carries out tensioning to reinforcing bar by turn high-strength bolt and generates prestressing force, after the completion of tensioning, filled to prestressed pore passage
Slurry, and sealing end concrete is poured, finally when plate body downside is painted, external anchorage steel wire rope is covered, reaches beautiful
Effect.
This post-tensioned prestressing plate both can be prefabricated in advance in factory, can also make at the scene, saves transportation cost, simultaneously
Meet the needs of different spans, this prestressed cored slab has preferable mechanical property, is a kind of strong applicability, construction party
Just, cost is reasonable, promising prefabricated structural element.
This post-tensioned prestressing plate improves a lot and improves for the floor stress performance of large bay or large span, is building
It can be prefabricated in advance before building structure use；Some functions are transformed after building use, when house service condition changes
When, very big change can also occur for the load that floor is born, and at this moment under the requirement of new design load can answer in advance accordingly
Power tensioning.Avoid floor pour again or structure of modification, save the construction of a large amount of building reconstructions, while meeting new use
It is a kind of economic, effective, easy for construction prefabricated components it is required that greatly saving cost and time.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. a kind of post-tensioned prestressing plate, it is characterised in that：Including plate body, several not interlaced prestressing force are reserved in plate body
Duct, each prestressed pore passage be it is independent shuttle in plate, it is curved under prestressed pore passage both ends and run through plate body downside, plate
Body downside is provided with anchorage in side outside the end of each prestressed pore passage, and steel wire rope, steel wire rope are worn in prestressed pore passage
Tensioning is carried out by the anchorage at both ends and generates prestressing force, and the high-strength bolt with its screw-thread fit, steel wire rope two are provided on anchorage
End with the high-strength bolt on the anchorage on the outside of the prestressed pore passage both ends respectively by being connected.
2. post-tensioned prestressing plate according to claim 1, it is characterised in that：Plate body is prefabricated plate body or cast-in-place plate body.
3. post-tensioned prestressing plate according to claim 1, it is characterised in that：Prestressed pore passage grouting blocks.
4. post-tensioned prestressing plate according to claim 1, it is characterised in that：Anchorage includes horizonal base plate, on horizonal base plate
Middle part is provided with vertical plate, and being horizontally disposed on vertical plate has screw hole, high-strength bolt to wear screw hole and therewith screw-thread fit.
5. post-tensioned prestressing plate according to claim 4, it is characterised in that：It is provided in vertical plate on horizonal base plate several
Vertical through-hole, plate body is interior to be vertically arranged with pre-embedded bolt at anchorage installation, and pre-embedded bolt lower end wears vertical through-hole, pre-buried spiral shell
Anchorage is connect locking with plate body by bolt lower end through locking nut.
6. post-tensioned prestressing plate according to claim 4, it is characterised in that：Horizonal base plate passes through the bar planting in implantation plate body
It is connected and fixed with plate body.
7. a kind of application method of post-tensioned prestressing plate, using post-tensioned prestressing plate as described in claim 1, feature exists
In：Before tensioning, anchorage is connect with plate body, high-strength bolt is connect with anchorage, high-strength bolt inner end is connected by prestressing force
The steel wire rope that cell end portion stretches out carries out tensioning to reinforcing bar by turn high-strength bolt and generates prestressing force, after the completion of tensioning, to pre-
Stress duct is in the milk, and pours sealing end concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346754.0A CN108331239A (en) | 2018-04-18 | 2018-04-18 | Post-tensioned prestressing plate and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346754.0A CN108331239A (en) | 2018-04-18 | 2018-04-18 | Post-tensioned prestressing plate and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108331239A true CN108331239A (en) | 2018-07-27 |
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ID=62934368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810346754.0A Pending CN108331239A (en) | 2018-04-18 | 2018-04-18 | Post-tensioned prestressing plate and application method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432175A (en) * | 1981-02-17 | 1984-02-21 | Smith Rodney I | Post-tensioned concrete slab |
| CN101144260A (en) * | 2007-09-21 | 2008-03-19 | 北京交通大学 | Prestressing applying method for concrete genuine bridge construction |
| CN202370158U (en) * | 2011-12-28 | 2012-08-08 | 贵州大学 | Prestressing force confined concrete slab |
| CN102979221A (en) * | 2012-12-06 | 2013-03-20 | 郑州大学 | Shear wall structure configured with crossed slant internal prestress and construction method of shear wall structure |
| CN103898838A (en) * | 2014-04-09 | 2014-07-02 | 中交隧道工程局有限公司 | Temporary prestressed steel system of No.0 box girder |
| KR20150047695A (en) * | 2013-10-24 | 2015-05-06 | 주식회사 목양종합건축사사무소 | Composite slab using wire-rope |
| CN206487069U (en) * | 2017-01-18 | 2017-09-12 | 中交第一公路勘察设计研究院有限公司 | One kind is reinforced with exempting from jack compressor wire stretching and anchoring device |
| CN208184058U (en) * | 2018-04-18 | 2018-12-04 | 福州大学 | Post-tensioned prestressing plate |
-
2018
- 2018-04-18 CN CN201810346754.0A patent/CN108331239A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4432175A (en) * | 1981-02-17 | 1984-02-21 | Smith Rodney I | Post-tensioned concrete slab |
| CN101144260A (en) * | 2007-09-21 | 2008-03-19 | 北京交通大学 | Prestressing applying method for concrete genuine bridge construction |
| CN202370158U (en) * | 2011-12-28 | 2012-08-08 | 贵州大学 | Prestressing force confined concrete slab |
| CN102979221A (en) * | 2012-12-06 | 2013-03-20 | 郑州大学 | Shear wall structure configured with crossed slant internal prestress and construction method of shear wall structure |
| KR20150047695A (en) * | 2013-10-24 | 2015-05-06 | 주식회사 목양종합건축사사무소 | Composite slab using wire-rope |
| CN103898838A (en) * | 2014-04-09 | 2014-07-02 | 中交隧道工程局有限公司 | Temporary prestressed steel system of No.0 box girder |
| CN206487069U (en) * | 2017-01-18 | 2017-09-12 | 中交第一公路勘察设计研究院有限公司 | One kind is reinforced with exempting from jack compressor wire stretching and anchoring device |
| CN208184058U (en) * | 2018-04-18 | 2018-12-04 | 福州大学 | Post-tensioned prestressing plate |
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