CN203129459U - Fixed precast concrete ladder end support - Google Patents
Fixed precast concrete ladder end support Download PDFInfo
- Publication number
- CN203129459U CN203129459U CN 201320108230 CN201320108230U CN203129459U CN 203129459 U CN203129459 U CN 203129459U CN 201320108230 CN201320108230 CN 201320108230 CN 201320108230 U CN201320108230 U CN 201320108230U CN 203129459 U CN203129459 U CN 203129459U
- Authority
- CN
- China
- Prior art keywords
- precast concrete
- concrete prefabricated
- end support
- prefabricated stair
- ribbet
- 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.)
- Expired - Lifetime
Links
- 239000011178 precast concrete Substances 0.000 title abstract description 8
- 239000004567 concrete Substances 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000011083 cement mortar Substances 0.000 claims abstract description 9
- 238000011065 in-situ storage Methods 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
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- Steps, Ramps, And Handrails (AREA)
Abstract
The utility model discloses a fixed precast concrete ladder end support comprising a cast-in-site concrete beam, a reserved steel tie, a reserved joint bar, a precast concrete ladder, a rabbet, 1:3 cement mortar base mortar and C35 minimum expansive grouting cement. The fixed precast concrete ladder end support has the advantages that the precast concrete ladder fixed end support is compact in structural design, convenient to construct and low in production cost, can effectively solve the problems of structural damages caused by earthquake load deformation and temperature deformation, and can be widely applied in the precast process.
Description
Technical field
The utility model relates to concrete prefabricated stair, particularly a kind of design of concrete prefabricated stair fixed end bearing.
Background technology
Constantly bringing forth new ideas and develop along with builing industry, constantly riseing of the market price of labour power, the increase of the building costs of Yin Faing thereupon, builing industry certainty progressively develops to the direction of industrialization, batch production, along with fabricated Building technology is more and more ripe and perfect, builing industry uses the assembling pattern to get more and more, and the part that precast stair can not lack as fabricated construction will inevitably large-scale promotion application.
Yet, apply the key issue that concrete prefabricated stair will solve antidetonation distortion and temperature deformation, according to test repeatedly, precast stair adopts an end to fix the design that an end slides, be the regulation that meets according to earthquake resistant design code, therefore solve the key issue that precast stair fixed end bearing problem becomes this technology.
The utility model content
The purpose of this utility model provides a kind of fixed end bearing for the concrete prefabricated stair that prevent seismic load distortion and temperature deformation, and the scope of application is more extensive.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of concrete prefabricated stair fixed end bearing comprises cast-in-situ concrete beam, reservation steel tie, reservation joint bar, concrete prefabricated stair, ribbet, 1:3 cement mortar seat slurry and C35 micro expanding cement grout.
Wherein, bury underground on the described cast-in-situ concrete beam and reserve steel tie, reserve joint bar, bury the reservation steel tie underground on the described concrete prefabricated stair, described concrete prefabricated stair front end is provided with ribbet, described cast-in-situ concrete beam is with 1:3 cement mortar seat slurry, and the C35 micro-expansion cement is filled in the described ribbet.
Wherein, described reservation joint bar is arranged in ribbet, is embedded in described C35 micro expanding cement grout layer inside.
Beneficial effect:
1, utilizes designs such as cast-in-situ concrete beam, reservation steel tie, reservation joint bar, concrete prefabricated stair, ribbet, 1:3 cement mortar seat slurry and C35 micro expanding cement grout, be easy to construction and installation, effectively solved the problem of the structural deterioration that concrete prefabricated stair cause owing to seismic load distortion and temperature deformation.
2, compact structure design, convenient construction, cost is low.
3, overcome the on-the-spot formwork difficulty of cast-in-place stair, the constuction joint quality is wayward, and the amount of labour used and the big shortcoming of timber consumption can be in the precasting process extensive uses.
Description of drawings
Fig. 1 is the external view of precast stair of the present utility model;
Fig. 2 is the section drawing of precast stair of the present utility model;
Fig. 3 is precast stair construction process figure.
Among the figure: 1 is cast-in-situ concrete beam; 2 for reserving steel tie; 3 for reserving joint bar; 4 is concrete prefabricated stair; 5 is the ribbet of precast stair; 6 is 1:3 cement mortar seat slurry; 7 is the C35 micro expanding cement grout.
The specific embodiment
As Fig. 1, shown in Figure 2, concrete prefabricated stair fixed end bearing of the present utility model, comprise cast-in-situ concrete beam, reserve steel tie, reserve joint bar, concrete prefabricated stair, ribbet, 1:3 cement mortar seat slurry and C35 micro expanding cement grout, it is characterized in that, bury the reservation steel tie underground at cast-in-situ concrete beam, reserve joint bar, for concrete prefabricated stair provide a reliable fixed end, in the process of the distortion of stair antidetonation and temperature deformation, provide a fixed end bearing, thereby avoid being out of shape the structural deterioration to concrete prefabricated stair, reach the controlled purpose of safety, fundamentally solve the key issue that concrete prefabricated stair antidetonation distortion and temperature deformation destroy.
As shown in Figure 3, the job practices of concrete prefabricated stair fixed end bearing of the present utility model may further comprise the steps:
(1) cast-in-situ concrete beam is together built with the building main body and is finished, simultaneously pre-buried steel tie and joint bar;
(2) precast concrete precast stair, pre-buried bench steel tie is finished the concrete ribbet design of stair in bench simultaneously;
(3) behind the 1:3 cement mortar seat slurry, carry out the lifting of precast concrete stair and install, installation quality is checked, reach qualified requirement;
(4) between cast-in-situ concrete beam and precast concrete precast stair, carry out the C35 micro expanding cement grout.
It should be noted that at last: obviously, above-described embodiment only is for the utility model example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being amplified out thus or change still are among the protection domain of the present utility model.
Claims (2)
1. concrete prefabricated stair fixed end bearing, it is characterized in that: comprise cast-in-situ concrete beam, reservation steel tie, reservation joint bar, concrete prefabricated stair, ribbet, 1:3 cement mortar seat slurry and C35 micro expanding cement grout, bury underground on the described cast-in-situ concrete beam and reserve steel tie, reserve joint bar, bury the reservation steel tie underground on the described concrete prefabricated stair, described concrete prefabricated stair front end is provided with ribbet, described cast-in-situ concrete beam is with 1:3 cement mortar seat slurry, and the C35 micro-expansion cement is filled in the described ribbet.
2. concrete prefabricated stair fixed end bearing according to claim 1, it is characterized in that: described reservation joint bar is arranged in ribbet, is embedded in described C35 micro expanding cement grout layer inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320108230 CN203129459U (en) | 2013-03-11 | 2013-03-11 | Fixed precast concrete ladder end support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320108230 CN203129459U (en) | 2013-03-11 | 2013-03-11 | Fixed precast concrete ladder end support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203129459U true CN203129459U (en) | 2013-08-14 |
Family
ID=48937452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320108230 Expired - Lifetime CN203129459U (en) | 2013-03-11 | 2013-03-11 | Fixed precast concrete ladder end support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203129459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814294A (en) * | 2020-12-29 | 2021-05-18 | 北京观唐城投建设有限公司 | Novel tongue-and-groove connecting structure of precast concrete ladder beam and construction process thereof |
-
2013
- 2013-03-11 CN CN 201320108230 patent/CN203129459U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814294A (en) * | 2020-12-29 | 2021-05-18 | 北京观唐城投建设有限公司 | Novel tongue-and-groove connecting structure of precast concrete ladder beam and construction process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |