CN207109611U - A kind of prefabricated just beam buttress - Google Patents
A kind of prefabricated just beam buttress Download PDFInfo
- Publication number
- CN207109611U CN207109611U CN201721084998.3U CN201721084998U CN207109611U CN 207109611 U CN207109611 U CN 207109611U CN 201721084998 U CN201721084998 U CN 201721084998U CN 207109611 U CN207109611 U CN 207109611U
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- backbar
- cushion cap
- mortise
- hole
- prefabricated
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Abstract
The utility model is more particularly to a kind of prefabricated just beam buttress, it is characterised in that：The cushion cap is located at the top of the pile foundation, the top of the cushion cap sets mortise, the backbar is placed in the top of the cushion cap by jacking, there is the through hole with the position correspondence of the mortise, the mortise is integrally formed the cushion cap and the backbar with the through hole by pouring into a mould concrete and connecting on the backbar.The advantages of the utility model：The Stability Analysis of Structures, construction is simple, the construction period below railway is shortened, reduce risk, strong applicability, cost is small.
Description
Technical field
The design and construction field of undercrossing tunnel viaduct is the utility model is related to, particularly a kind of prefabricated just beam buttress.
Background technology
Undercrossing tunnel viaduct is constructed frequently with the method for precast box body jacking in foundation ditch, and still, jacking case body needs frame
If just beam ensures railway normal operation, just roof beam structure is located at just on beam buttress, and just beam buttress is cut the earth under just beam, line frequently with setting up
Kerve, construction high-pressure rotary jet grouting pile, the mode of casting concrete strip footing are constructed, and work progress is very cumbersome.In order to save into
This, shortens the construction period below railway, reduces risk, it is necessary to a kind of new construction technology.
The content of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art, there is provided a kind of prefabricated just beam buttress, will be pre-
In backbar jacking to the cushion cap of system, and by cast-in-place note concrete make the through hole on backbar be connected with mortise make backbar and
Cushion cap is integrally formed structure.
The utility model purpose is realized and completed by following technical scheme：
A kind of prefabricated just beam buttress, the just beam buttress include pile foundation, cushion cap and backbar, it is characterised in that：It is described
Cushion cap is located at the top of the pile foundation, and the top of the cushion cap sets mortise, and the backbar is placed in described hold by jacking
The top of platform, there is the through hole with the position correspondence of the mortise, the mortise and the through hole are by pouring on the backbar
Note concrete connection is integrally formed the cushion cap and the backbar.
The backbar is the internal precast beam with hollow-core construction, top plate and the backbar in the backbar
Perforate is distinguished on bottom plate, the perforate penetrates the hollow-core construction and forms the through hole.
Head plate is internally provided with the hollow-core construction of the precast beam, the position of the head plate is located at the perforate position
The both sides put.
The mortise depth 0.5m.
The utility model has the advantages that：
1st, relative to cast-in-place concrete strip footing below railway, it is not required to carry out foundation stabilization using high-pressure rotary jet grouting pile, together
When shorten the duration, reduce the Influence to operation to railway；
2nd, relative to cast-in-place concrete strip footing below railway, construction, it is not required to set up just beam；
3rd, construction risk below railway is reduced, ensure that the stabilization of just beam buttress；
4th, viaduct is worn under, and just beam buttress design and construction has very big popularizing application prospect, particularly existing
It is more obvious using competitive advantage in the case of railway bed geology difference.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model feature and other correlated characteristics are described in further detail by embodiment below in conjunction with accompanying drawing,
In order to the understanding of technical staff of the same trade：
As shown in figure 1, label 1-9 is expressed as in figure：Pile foundation 1, cushion cap 2, backbar 3, mortise 4, through hole 5, sky
Core structure 6, head plate 7, reinforcing bar 8, concrete 9.
Embodiment：As shown in figure 1, the prefabricated just beam buttress in the present embodiment is used in the construction of the flyover of undercrossing tunnel,
Just beam buttress is made up of pile foundation 1, cushion cap 2 and backbar 3 for this, and the backbar 3 is precast beam.Cushion cap 2 is supported on pile foundation 1
Top, the top of cushion cap 2 have mortise 4.The prefabricated backbar 3 in foundation ditch, the sky that it is rectangle inside reinforced concrete that the backbar 3, which is,
Core structure 6, the perforate on the top plate and bottom plate of the both side ends of backbar 3, the perforate penetrate hollow-core construction 6 and in backbars 3
Upper composition through hole 5.The position of perforate depends on position of the mortise 4 on cushion cap 2 on backbar 3, that is, ensures to be opened in supporting
Spacing between the through hole 5 of the both side ends of beam 3 is identical with the spacing between the mortise 4 opened up on two cushion caps 2.In hollow knot
Structure 6 is internally provided with head plate 7, and head plate 7 is located at the distance between the both sides, the head plate 7 of both sides of position of opening more than logical
The diameter in hole 5, the head plate 7 of both sides is set to form the space of right-angled intersection with through hole 5.
As shown in figure 1, in mortise 4 and the inside assembling reinforcement 8 of through hole 5 and cast-in-place concrete 9, by pouring into a mould the shape of concrete 9
Make mortise 4 into shear connector and through hole 5 is connected and is integrally formed cushion cap 2 and backbar 3.End socket positioned at the both sides of through hole 5
Concrete is also poured among gap between plate 7 and through hole 5, so that what is connected between backbar 3 and cushion cap 2 more steps up
Gu the relative motion especially on both vertical directions of constraint.
Construction in the present embodiment specifically comprises the following steps：
a）, construct in railway bed both sides pile foundation 1 and cushion cap 2, cushion cap 2 support by pile foundation 1.In the both sides of cushion cap 2
Mortise 6 is reserved on top surface, the hole depth of mortise 6 is 0.5m.
B), pre-fabricated inner has the backbar 3 of hollow-core construction 6, the top plate of backbar 3 and bottom plate perforate and with hollow knot
The insertion of structure 6 forms through hole 5.
c）, by the jacking of backbar 3 to cushion cap 2 until backbar 3 on through hole 5 alignd in place with the mortise 4 on cushion cap 2
Afterwards, in the position assembling reinforcement 8 of mortise 4 and through hole 5, and head plate 7 is set in hollow-core construction 6, the position of head plate 7 is located at
The both sides of position of opening, pouring concrete 9 is then reproduced, backbar 3 is connected with cushion cap 2 structure.
Although the design to the utility model purpose and embodiment elaborate above example referring to the drawings,
But those skilled in the art will realize that in the case where limiting the precondition of scope without departing from claim, still may be used
To make various modifications and variations to the utility model, therefore do not repeat one by one herein.
Claims (4)
1. a kind of prefabricated just beam buttress, the just beam buttress include pile foundation, cushion cap and backbar, it is characterised in that：It is described to hold
Platform is located at the top of the pile foundation, and the top of the cushion cap sets mortise, and the backbar is placed in the cushion cap by jacking
Top, there is the through hole with the position correspondence of the mortise, the mortise and the through hole pass through cast on the backbar
Concrete connection is integrally formed the cushion cap and the backbar.
2. the prefabricated just beam buttress of one kind according to claim 1, it is characterised in that：The backbar is to be internal with hollow
The precast beam of structure, distinguishes perforate on the top plate of the backbar and the bottom plate of the backbar, described in perforate insertion
Hollow-core construction forms the through hole.
3. the prefabricated just beam buttress of one kind according to claim 2, it is characterised in that：In the hollow-core construction of the precast beam
Portion is provided with head plate, and the position of the head plate is located at the both sides of the position of opening.
4. the prefabricated just beam buttress of one kind according to claim 1, it is characterised in that：The mortise depth 0.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721084998.3U CN207109611U (en) | 2017-08-28 | 2017-08-28 | A kind of prefabricated just beam buttress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721084998.3U CN207109611U (en) | 2017-08-28 | 2017-08-28 | A kind of prefabricated just beam buttress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207109611U true CN207109611U (en) | 2018-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721084998.3U Active CN207109611U (en) | 2017-08-28 | 2017-08-28 | A kind of prefabricated just beam buttress |
Country Status (1)
| Country | Link |
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| CN (1) | CN207109611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338734A (en) * | 2017-08-28 | 2017-11-10 | 中铁上海设计院集团有限公司 | A kind of prefabricated just beam buttress and prefabricated jacking construction method |
-
2017
- 2017-08-28 CN CN201721084998.3U patent/CN207109611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338734A (en) * | 2017-08-28 | 2017-11-10 | 中铁上海设计院集团有限公司 | A kind of prefabricated just beam buttress and prefabricated jacking construction method |
| CN107338734B (en) * | 2017-08-28 | 2023-01-24 | 中铁上海设计院集团有限公司 | Prefabricated jacking construction method for prefabricated temporary girder buttress |
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