CN109695322A - Prestressed prefabricated stringer type stairway of one kind and preparation method thereof - Google Patents
Prestressed prefabricated stringer type stairway of one kind and preparation method thereof Download PDFInfo
- Publication number
- CN109695322A CN109695322A CN201910105307.0A CN201910105307A CN109695322A CN 109695322 A CN109695322 A CN 109695322A CN 201910105307 A CN201910105307 A CN 201910105307A CN 109695322 A CN109695322 A CN 109695322A
- Authority
- CN
- China
- Prior art keywords
- reinforcing steel
- presstressed reinforcing
- stringer type
- prefabricated stringer
- type stairway
- 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
- 238000002360 preparation method Methods 0.000 title abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 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 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
- E04F11/025—Stairways having stringers
-
- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F2011/0203—Miscellaneous features of stairways not otherwise provided for
- E04F2011/0205—Stairways characterised by the use of specific materials for the supporting structure of the treads
- E04F2011/021—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass
- E04F2011/0212—Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass mainly of concrete
Abstract
The present invention provides a kind of prestressed prefabricated stringer type stairways and preparation method thereof, and prefabricated stringer type stairway includes cant beam, gangboard and marks time, the cant beam by presstressed reinforcing steel is equipped in tensile region, the presstressed reinforcing steel uses pre-tensioning system or post-tensioned construction；Production method are as follows: mold cleaning；Pre-tensioning system or post-tensioned construction；Demoulding obtains finished product precast stair.The prefabricated stringer type stairway has the advantages that self weight is low, at low cost, does not generate crack；The production method of the prefabricated stringer type stairway have the advantages that it is easy to implement, convenient for manipulation.
Description
Technical field
The present invention relates to construction technical fields, and in particular to the prestressed prefabricated stringer type stairway of one kind and its production
Method.
Background technique
The precast stair design theory that hinged, one end is slided using one end, theoretical system is simple, clear, easy to spread.It is
The technology higher component of rate the most mature, reproducible in prefabricated components at present.Precast stair is most held during assembled architecture is promoted
The component easily realized, but it is not easy repeatedly to split, and causes monolithic elements self weight larger, has higher requirements, directly affect to tower crane
Construction cost, and it is also easy to produce crack after being installed, cause hidden danger of quality.
In the prestressed application of tradition, pedestal, tensioning equipment etc. are cumbersome, not easy to control, lead to prestressed component matter
Measure irregular, therefore existing stair lead to crack common fault temporarily without prestressed application, and it is high to be self-possessed.
Summary of the invention
For the above-mentioned deficiency of the prior art, the present invention provides a kind of prestressed prefabricated stringer type stairway and its production sides
Method, the prefabricated stringer type stairway are equipped with cant beam, gangboard, mark time and presstressed reinforcing steel, which has low, cost of being self-possessed
It is low, do not generate the advantages of crack；The production method of the prefabricated stringer type stairway have the advantages that it is easy to implement, convenient for manipulation；It uses
The stair of this method production also have the advantages that deformed bar accurate positioning, improve the consistency of precast stair quality.
Technical scheme is as follows:
On the basis of existing technology, the present invention provides a kind of prestressed prefabricated stringer type stairways, including cant beam, gangboard
With mark time, the cant beam by tensile region be equipped with presstressed reinforcing steel, the presstressed reinforcing steel use pre-tensioning system or post-tensioned construction.
Preferably, the cant beam is equipped with twice or twice or more, so that prefabricated stringer type stairway is adapted to different supporting powers
Architectural engineering uses.
Preferably, when presstressed reinforcing steel is constructed using pre-tensioning system, presstressed reinforcing steel includes flat segments, the both ends difference of flat segments
It is connected with broken line, the flat segments are located at the intermediate region of stair.
Preferably, when presstressed reinforcing steel uses post-tensioned construction, presstressed reinforcing steel is curve, is distributed in the tensile region of cant beam.
Preferably, the optional 80~100mm of gangboard thickness.
The production method of above-mentioned prestressed prefabricated stringer type stairway, specially pre-tensioning system, its step are as follows:
(1) mold cleaning, presstressed reinforcing steel be in place and tensioning；
(2) Steel Reinforcing Bar Material, bind into mould；
(3) concrete prepares and pours, vibrates；
(4) reach some strength to concrete, discharge presstressed reinforcing steel；
(5) demoulding obtains finished product precast stair.
The production method of above-mentioned prestressed prefabricated stringer type stairway, specially post stretching, its step are as follows:
(1) mold cleaning, reserving hole channel are in place；
(2) Steel Reinforcing Bar Material, bind into mould；
(3) concrete is prepared and is poured；
(4) reach requirement to concrete strength, penetrate presstressed reinforcing steel, carry out tensioning, anchoring；
(5) hole path pressure grouting；
(6) demoulding obtains finished product precast stair.
Compared with the existing technology, the beneficial effects of the present invention are:
1, by setting presstressed reinforcing steel, and pre-tensioning system or post-tensioned construction are used, prefabricated stringer type stairway can be applied and is answered in advance
Power；Under the premise of stair have prestressed enough, since the gangboard thickness of prestressing force stair is smaller compared to cranked slab stairs, because
This, relative to cranked slab stairs, the self weight of prefabricated stringer type stairway reduces about 30%；In addition, the setting of presstressed reinforcing steel, can effectively avoid
Stair crack fundamentally solves the crack problem of precast stair.
2, it is constructed by using pre-tensioning system or post stretching to presstressed reinforcing steel, the controllability of work progress is improved, to mention
The accuracy of high pre-stress reinforcement location makes precast stair have the advantages that uniform quality, promotes precast stair scale, standard
The production of change, save the cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is prefabricated stringer type stairway top view.
Fig. 2 is prefabricated stringer type stairway cross-section diagram (one).
Fig. 3 is prefabricated stringer type stairway cross-section diagram (two).
Fig. 4 is prefabricated stringer type stairway cross-section diagram (three).
Fig. 5 is the prefabricated stringer type stairway main view that embodiment 1 provides.
Fig. 6 is the prefabricated stringer type stairway main view that embodiment 2 provides.
In figure, 1- cant beam, 2- gangboard, 3- marks time, 4- presstressed reinforcing steel, 401- flat segments, 402- broken line.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Embodiment 1: as Figure 1-Figure 5, the present invention provides a kind of prestressed prefabricated stringer type stairway, including cant beam 1,
Gangboard 2 and mark time 3, the cant beam 1 by presstressed reinforcing steel 4 is equipped in tensile region, the cant beam 1 is equipped with twice, and the gangboard 2 is thick
Spend optional 90mm；Wherein, Fig. 2-Fig. 4 is respectively distribution map of the presstressed reinforcing steel 4 in stair lower end, middle-end and upper end；
The presstressed reinforcing steel 4 is constructed using pre-tensioning system: presstressed reinforcing steel 4 includes flat segments 401, the both ends point of flat segments 401
It is not connected with broken line 402, the flat segments 401 are located at the intermediate region of stair；The pretensioning before concreting
Then muscle 4 carries out concreting, the pulling force of presstressed reinforcing steel 4 is discharged after concrete reaches design strength, by presstressed reinforcing steel
Cohesive force between 4 and concrete to apply prestressing force to concrete；
The production method of above-mentioned prestressed prefabricated stringer type stairway, steps are as follows:
(1) mold cleaning is configured presstressed reinforcing steel 4 by tensile region in the cant beam of mold, and pretensioning is pre- before concreting
Stress rib 4；
(2) Steel Reinforcing Bar Material, bind into mould；
(3) concreting is carried out, is vibrated；
(4) pulling force that presstressed reinforcing steel is discharged after concrete reaches design strength, by between presstressed reinforcing steel 4 and concrete
Cohesive force come to concrete apply prestressing force；
(5) demoulding obtains finished product precast stair.
Embodiment 2: on the basis of embodiment 1, as shown in Fig. 1-Fig. 4 and 6, the presstressed reinforcing steel 4 is applied using post stretching
Work: presstressed reinforcing steel 4 is curve shape, is distributed in the tensile region of cant beam 1；Preceding reserving hole channel is poured, it is strong to reach design to concrete
After degree, penetrates presstressed reinforcing steel 4 and carry out tensioning, then anchored presstressed reinforcing steel 4 with anchorage, finally the mud jacking in duct；
The production method of above-mentioned prestressed prefabricated stringer type stairway, steps are as follows:
(1) mold cleaning, reserving hole channel are in place；
(2) Steel Reinforcing Bar Material, bind into mould；
(3) concreting is prepared；
(4) it after concrete reaches design strength, penetrates presstressed reinforcing steel 4 and carries out tensioning, then with anchorage by presstressed reinforcing steel
Anchoring；
(5) the last mud jacking in duct；
(6) demoulding obtains finished product precast stair.
The present invention is described in detail above."upper", "lower", " left side " and " right side " in the present embodiment are opposite illustrate
Position description in book attached drawing.Although by reference to attached drawing and the mode of preferred embodiment is combined to carry out in detail the present invention
Description, but the present invention is not limited thereto.
Claims (7)
1. a kind of prestressed prefabricated stringer type stairway, which is characterized in that including cant beam, gangboard and mark time, the tension of the cant beam
Presstressed reinforcing steel is equipped in power area, the presstressed reinforcing steel uses pre-tensioning system or post-tensioned construction.
2. prestressed prefabricated stringer type stairway as described in claim 1, which is characterized in that the cant beam is equipped with twice or twice
More than.
3. prestressed prefabricated stringer type stairway as claimed in claim 2, which is characterized in that the gangboard thickness optional 80~
100mm。
4. prestressed prefabricated stringer type stairway as described in any one of claims 1-3, which is characterized in that when presstressed reinforcing steel uses
When pre-tensioning system is constructed, presstressed reinforcing steel includes flat segments, and the both ends of flat segments are connected separately with broken line, and the flat segments are located at building
The intermediate region of ladder.
5. prestressed prefabricated stringer type stairway as described in any one of claims 1-3, which is characterized in that when presstressed reinforcing steel uses
When post-tensioned construction, presstressed reinforcing steel is curve, is distributed in the tensile region of cant beam.
6. a kind of method for making the described in any item prestressed prefabricated stringer type stairways of claim 1-3, which is characterized in that should
Method is pre-tensioning system, and its step are as follows:
(1) mold cleaning, presstressed reinforcing steel be in place and tensioning；
(2) Steel Reinforcing Bar Material, bind into mould；
(3) concrete prepares and pours, vibrates；
(4) reach some strength to concrete, discharge presstressed reinforcing steel；
(5) demoulding obtains finished product precast stair.
7. a kind of method for making the described in any item prestressed prefabricated stringer type stairways of claim 1-3, which is characterized in that should
Method is post stretching, and its step are as follows:
(1) mold cleaning, reserving hole channel are in place；
(2) Steel Reinforcing Bar Material, bind into mould；
(3) concrete is prepared and is poured；
(4) reach requirement to concrete strength, penetrate presstressed reinforcing steel, carry out tensioning, anchoring；
(5) hole path pressure grouting；
(6) demoulding obtains finished product precast stair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105307.0A CN109695322A (en) | 2019-02-01 | 2019-02-01 | Prestressed prefabricated stringer type stairway of one kind and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105307.0A CN109695322A (en) | 2019-02-01 | 2019-02-01 | Prestressed prefabricated stringer type stairway of one kind and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109695322A true CN109695322A (en) | 2019-04-30 |
Family
ID=66234841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910105307.0A Pending CN109695322A (en) | 2019-02-01 | 2019-02-01 | Prestressed prefabricated stringer type stairway of one kind and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109695322A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04194253A (en) * | 1990-11-28 | 1992-07-14 | Fujita Corp | Pc stairs building method and pc stairs |
| CN205777185U (en) * | 2016-05-31 | 2016-12-07 | 西安建构实业有限责任公司 | A kind of full assembling concrete beam-type stair |
| CN107984610A (en) * | 2017-11-22 | 2018-05-04 | 武汉大学 | A kind of prestressing force small box girder production method |
| CN108166691A (en) * | 2018-02-11 | 2018-06-15 | 山东省建筑科学研究院 | A kind of precast prestressed concrete beam formula stair and making construction method |
| CN108331274A (en) * | 2018-04-27 | 2018-07-27 | 华东建筑设计研究院有限公司 | A kind of precast prestressed concrete stair |
| CN207739529U (en) * | 2017-12-29 | 2018-08-17 | 昌大建筑科技有限公司 | Assembled assembled stair |
-
2019
- 2019-02-01 CN CN201910105307.0A patent/CN109695322A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04194253A (en) * | 1990-11-28 | 1992-07-14 | Fujita Corp | Pc stairs building method and pc stairs |
| CN205777185U (en) * | 2016-05-31 | 2016-12-07 | 西安建构实业有限责任公司 | A kind of full assembling concrete beam-type stair |
| CN107984610A (en) * | 2017-11-22 | 2018-05-04 | 武汉大学 | A kind of prestressing force small box girder production method |
| CN207739529U (en) * | 2017-12-29 | 2018-08-17 | 昌大建筑科技有限公司 | Assembled assembled stair |
| CN108166691A (en) * | 2018-02-11 | 2018-06-15 | 山东省建筑科学研究院 | A kind of precast prestressed concrete beam formula stair and making construction method |
| CN108331274A (en) * | 2018-04-27 | 2018-07-27 | 华东建筑设计研究院有限公司 | A kind of precast prestressed concrete stair |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190430 |