CN207448750U - A kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system - Google Patents
A kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system Download PDFInfo
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- CN207448750U CN207448750U CN201721534290.3U CN201721534290U CN207448750U CN 207448750 U CN207448750 U CN 207448750U CN 201721534290 U CN201721534290 U CN 201721534290U CN 207448750 U CN207448750 U CN 207448750U
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- reinforced concrete
- tensioning system
- track traffic
- concrete floor
- peg board
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Abstract
The utility model discloses a kind of U-shaped girder prefabricated pedestals of peg board formula track traffic pre-tensioning system, including plain concrete cushion layer, reinforced concrete floor is equipped at the top of the plain concrete cushion layer, the pile foundation of several concrete drilling bored concrete piles is equipped with below the plain concrete cushion layer, the pile foundation is connected through the plain concrete cushion layer with reinforced concrete floor, the top of the reinforced concrete floor is equipped with the bottom die platform for being used to support U-shaped beam, the left and right ends of the reinforced concrete floor are equipped with anchoring pier and gooseneck, the anchoring pier is equipped with jack, the gooseneck for sequentially passing through both ends and anchoring pier of prestressed strand in U-shaped beam are connected with jack.U-shaped girder prefabricated pedestal provided by the utility model is simple in structure, stability is good, is applicable to all kinds of soft foundations, can bear prestressed stretch-draw to the curved complicated applied force of tension and compression caused by pedestal, highly practical, has application value.
Description
Technical field
The utility model is related to a kind of U-shaped girder prefabricated pedestals, and in particular to a kind of U-shaped beam of peg board formula track traffic pre-tensioning system
Precast pedestal belongs to track traffic technical field of construction.
Background technology
Pre-tensioning system is to improve the cracking resistance of reinforced concrete member and reinforced concrete member is avoided to go out too early
Existing crack, and stress is previously applied to it in concrete component prefabrication process to improve a kind of method of component performance, at present
It is widely used for track traffic technical field of construction.With the development of urban rail transit in China, pretensioned prestressing coagulation
The U-shaped beam of soil also begins to progressively be widely used in VIADUCTS IN URBAN RAIL TRANSIT engineering.U-shaped beam is compared to traditional box beam, T-shaped
Beam etc. has many advantages, such as effectively to reduce building height, beautification landscape, reduces building cost, and Successful utilization is in Shanghai, depth
In the railway traffic engineering in the cities such as ditch between fields, Qingdao.
Current U-shaped beam is also there are the problems such as perforated wall is thin, anti-twisting property is poor, and difficulty of construction is larger, construction requirement
Strictly, prestressed stretch-draw Process Precision is high, it then becomes necessary to ensure that U-shaped girder prefabricated pedestal stability is good, tensioning intensity is high, right
The tension stress of prestress wire is uniform, and this requires U-shaped girder prefabricated pedestal will have enough intensity, stability, economy
Property.
Application time is shorter at home for the existing U-shaped beam of pretensioning prestressed concrete, on the U-shaped girder prefabricated pedestal of pre-tensioning system
Designing technique report is less.Chinese patent CN 201320148437.0 discloses a kind of pier stud type pretensioning prestressed concrete U
Type girder prefabricated pedestal, but the counter-force compression bar that the pedestal uses can cause vertical displacement to draw in prestressed stretch-draw due to gravity
Eccentric compression is played, it is unfavorable to pedestal overall structure, and it is this unfavorable in order to resist, it is necessary to substantial amounts of high-strength concrete and steel
Muscle, it is more stringent to foundation requirement, it is typically only capable to be applied to hard soil foundation, enough stability is lacked for weak soil property, is made
With being limited in scope.Chinese patent CN201620963932.0 discloses a kind of track traffic large-tonnage pretensioning prestressed concrete
The stretching bed seat of U-shaped beam, although the pedestal is suitable for the U-shaped beam of large-tonnage pre-tensioning system, the pedestal is horizontal mainly by transfer beam, steel
Beam supports prestressing force, complicated, and stability deficiency easily makes the support force uneven；And it is also required to using reaction beam, it is and anti-
It is the same to force bar, meeting is due to gravity and prestressed stretch-draw causes vertical displacement and causes eccentric compression, therefore can only also apply
In hard soil foundation, enough stability is lacked for weak soil property, use scope is limited.
Utility model content
In view of the above-mentioned problems existing in the prior art, the purpose of this utility model is to provide one kind and is applicable to soft foundation
The U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system, including plain concrete cushion layer, the plain concrete pad
Layer top is equipped with reinforced concrete floor, and the pile foundation of several concrete drilling bored concrete piles is equipped with below the plain concrete cushion layer,
The pile foundation is connected through the plain concrete cushion layer with reinforced concrete floor, is set at the top of the reinforced concrete floor
It is useful for supporting the bottom die platform of U-shaped beam, the left and right ends of the reinforced concrete floor are equipped with anchoring pier and gooseneck, institute
It states anchoring pier and is equipped with jack, the prestressed strand of U-shaped beam sequentially passes through the gooseneck at both ends and anchoring pier connects with jack
It connects.
Preferably, the bottom die platform is set along reinforced concrete floor long axis direction.
Preferably, the bottom die platform includes fixed bottom die platform, removable bottom die platform and detachable bed die
Platform.
As further preferred scheme, move and hanging ring is respectively equipped in bottom die platform and detachable bottom die platform.
As still more preferably scheme, each removable bottom die platform and detachable bottom die platform are respectively equipped with two pairs and hang
Ring.
Preferably, the pile foundation becames one through the plain concrete cushion layer with reinforced concrete floor.
Preferably, the reinforced concrete floor is variable cross-section form.
Preferably, anchoring pier is an integral structure with reinforced concrete floor.
Preferably, reinforced concrete floor, pile foundation, anchoring pier, be equipped with reinforcing bar in bottom die platform, and reinforcing bar mixes
Reinforcing bar in solidifying soil bottom plate binds with the reinforcing bar in pile foundation, anchoring pier, bottom die platform, is welded as a whole.
Preferably, the anchoring pier is equipped with preformed hole, and the gooseneck is equipped with prestressed anchor, U-shaped beam
Prestressed strand initially pass through the prestressed anchor of gooseneck, the preformed hole for being then passed through anchoring pier is connected with jack.
Preferably, anchor pier and gooseneck is symmetrically located at the left and right ends of reinforced concrete floor.
Compared to the prior art, the advantageous effects of the utility model are：
U-shaped girder prefabricated pedestal provided by the utility model, reinforced concrete floor, pile foundation (plain concrete cushion layer and stake
Base) and the huge eccentricity pressure that pier shared prestressed strand generates is anchored, suitable for the precast beam under all kinds of soft foundations
Pedestal makes, and safety simple in structure reduces the expense for the treatment of of soft foundation, saves excellent geology, and it is fast to build field speed degree, facilitates U-shaped beam
It is prefabricated；In addition, the U-shaped girder prefabricated pedestal of the utility model, substitutes transfer beam, counter-force compression bar etc. using anchoring pier, avoids biography
Power beam etc. is subject to the de-stabilising effect that eccentricity pressure is brought, simple in structure, and stability is good, and safe coefficient is high during work；With pole
Strong practical value, should be widely promoted application.
Description of the drawings
Fig. 1 is the schematic diagram that the U-shaped beam of pretensioning prestressed concrete is located on its U-shaped girder prefabricated pedestal；
Fig. 2 is the structure diagram for anchoring pier；
Fig. 3 is the elevation of U-shaped girder prefabricated pedestal；
Fig. 4 is the plan view of U-shaped girder prefabricated pedestal；
Fig. 5 is the pile foundation figure of U-shaped girder prefabricated pedestal；
Fig. 6 is the operating diagram of U-shaped girder prefabricated pedestal.
Figure label is schematically as follows：1st, plain concrete cushion layer；2nd, reinforced concrete floor；3rd, pile foundation；4th, U-shaped beam；5th, bottom
Mould platform；51st, fixed bottom die platform；52nd, bottom die platform is moved；53rd, detachable bottom die platform；6th, pier is anchored；7th, gooseneck；
8th, jack；9th, prestressed strand；10th, moulding board of precast beam；11st, prefabricated boom support；12- grounds.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with attached drawing.
As shown in Figures 1 to 6：A kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system provided by the utility model,
Including plain concrete cushion layer 1,1 top of plain concrete cushion layer is equipped with reinforced concrete floor 2, the plain concrete cushion layer 1
(setting, quantity is adjusted flexibly in the quantity of pile foundation to pile foundation 3 of the lower section equipped with several concrete drilling bored concrete piles according to requirements
At least two, 2 lower section of reinforced concrete floor is symmetrically distributed in, with 2 shared prestressed strand of reinforced concrete floor
The huge eccentricity pressure generated), the pile foundation 3 is connected (such as through the plain concrete cushion layer 1 with reinforced concrete floor 2
Shown in Fig. 1 and Fig. 2), the top of the reinforced concrete floor 2 is equipped with the bottom die platform 5 for being used to support U-shaped beam 4, the reinforcing bar
The left and right ends of concrete floor 2 are equipped with anchoring pier 6 and gooseneck 7, and the anchoring pier 6 is equipped with jack 8, U-shaped beam 4
Prestressed strand 9 sequentially passes through the gooseneck 7 at both ends and anchoring pier 6 is connected (as shown in Figure 6) with jack 8.The utility model
Precast pedestal, the required significant horizontal pulling force of stretch-draw prestressing force is passed to by pile foundation (element by anchoring pier 6 during tensioning
Concrete cushion 1, pile foundation 3) and reinforced concrete floor 2 formed peg board formula pedestal, by pile foundation and reinforced concrete floor 2
The huge eccentricity pressure that shared prestressed strand generates, therefore the precast pedestal of the utility model is of less demanding to ground,
It not only can be adapted for hard ground and apply also for Soft Ground.
As shown in Figure 3 and Figure 4, the bottom die platform 5 is set along 2 long axis direction of reinforced concrete floor.The bed die is put down
Platform 5 includes fixed bottom die platform 51, removable bottom die platform 52 and detachable bottom die platform 53.Traditional precast pedestal is usually only
It is in the form of a single including fixed bottom die platform, it is only capable of producing the U beams of single across footpath, and the application is in the base of fixed bottom die platform 51
Removable bottom die platform 52 and detachable bottom die platform 53 are additionally provided on plinth, so can flexibly be adjusted according to U girder spans footpath is different
The quantity of whole bottom die platform 5 improves pedestal utilization rate, reduces pedestal construction amount.
Bottom die platform 5 includes being all provided in fixed bottom die platform 51, removable bottom die platform 52 and detachable bottom die platform 53
There is reinforcing bar, wherein the reinforcing bar that fixed bottom die platform 51 is equipped with (is not shown with the reinforcing bar on reinforced concrete floor 2 in figure
Out) mutually binding.
Hanging ring is respectively equipped in removable bottom die platform 52 and detachable bottom die platform 53, it is specifically, each removable
Dynamic bottom die platform 52 and detachable bottom die platform 53 are respectively equipped with two pairs of hanging rings (not shown in figure), and two pairs of hanging rings are in a left side
It is right symmetrical.
With reference to shown in Fig. 1, Fig. 2 and Fig. 5, the pile foundation 3 is through the plain concrete cushion layer 1 and reinforced concrete floor 2
Became one, further enhance pile foundation 3, the peg board formula pedestal that plain concrete cushion layer 1 and reinforced concrete floor 2 are formed it is steady
It is qualitative.
The reinforced concrete floor 2 is variable cross-section form, reduces concrete usage amount, reduces building cost.
Anchoring pier 6 is an integral structure with reinforced concrete floor 2, ensures the shearing resistance, antidumping, resistance to deformation of anchoring pier 6
It is horizontal.
Reinforced concrete floor 2, pile foundation 3, are equipped with reinforcing bar, and reinforced concrete floor 2 in bottom die platform 5 at anchoring pier 6
Interior reinforcing bar binds with the reinforcing bar in pile foundation 3, anchoring pier 6, bottom die platform 5, is welded as a whole, to further improve pedestal entirety
Stability and the anchoring shearing resistance of pier 6, antidumping, resistance to deformation it is horizontal.
As shown in fig. 6, the anchoring pier 6 is equipped with preformed hole (not shown in figure), the gooseneck is equipped with
Prestressed anchor (does not show) that the prestressed strand 9 of U-shaped beam 4 initially passes through the prestressed anchor of gooseneck 7 in figure, then
Preformed hole through anchoring pier 6 is connected with jack 8.
As shown in fig. 6, anchoring pier 6 and gooseneck 7 are symmetrically located at the left and right ends of reinforced concrete floor 2 so that platform
Seat is whole along center line symmetric design, can 2 or 3 U-shaped beams of single tension, improve production efficiency, shorten the construction period.
When preparing the U-shaped beam of track traffic pre-tensioning system using above-mentioned precast pedestal, first by model sheetinstallat to precast pedestal, such as
Shown in the present embodiment Fig. 1：Moulding board of precast beam 10 and prefabricated boom support 11 are installed in the bottom die platform 5 of precast pedestal (specific
Say it is in fixed bottom die platform 51)；Behind the deformed bar position of fixed U-shaped beam, then stretch-draw prestressing force steel beam pours U
Type beam concrete forms U-shaped beam beam body, then U-shaped beam is conserved, and maintenance terminates to cut off extra prestress wire (steel
Twisted wire is single, and prestressed strand with steel strand wires by mostly forming), removing moulding board of precast beam 10 and prefabricated boom support 11 can make
Into U-shaped beam.
Specifically, rail is manufactured using the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system described in the utility model
The process of the U-shaped beam of road traffic pre-tensioning system is as follows：
The concrete drilling bored concrete pile being adapted with pile foundation 3 is made on ground 12 (Soft Ground, hard ground),
By the pile foundation 3 in precast pedestal, (size of pile foundation 3 is adjusted flexibly according to specification according to geological condition, during construction, if ground
The poor soft soil foundation of matter, can be with pre-buried related built-in fitting) it is fixed in concrete drilling bored concrete pile, i.e., it will be in precast pedestal
Plain concrete cushion layer 1, reinforced concrete floor 2, pile foundation 3, fixed bottom die platform 51, anchoring pier 6 are fixed on ground；
Stirrup in pile foundation 3, anchoring pier 6, fixed bottom die platform 51 is mutually tied up with the reinforcing bar on concrete floor 2
Fixed, welding, forms framework of steel reinforcement.
Moulding board of precast beam 10 (moulding board of precast beam 10 is installed in fixed bottom die platform 51), and fixed prefabricated boom support are installed
11 (prefabricated boom support 11 is positioned on reinforced concrete floor 2 and is formed to protect prefabricated beam form with reinforced concrete floor 2
The protective zone of plate 10), pour strong concrete；
Watering conserves U-shaped girder prefabricated pedestal concrete under room temperature, after treating that concrete strength reaches 28 days compression strength, peace
Fill jack 8, gooseneck 7 and removable bottom die platform 52, detachable bottom die platform 53；
The anchoring prestress steel beam 9 on gooseneck 7, with 8 pushing tow gooseneck 7 of jack, stretch-draw prestressing force steel beam 9；
Pour U-shaped beam concrete；
Steam curing pours U-shaped beam concrete, and moulding board of precast beam 10 and prefabricated boom support 11 are removed after maintenance；
It puts and opens, cuts extra prestress wire；
Beam body to beam strorage area is extracted with lifting beam machine to store.
In the preparation process of the above-mentioned U-shaped beam of track traffic pre-tensioning system, the tension side of " a string two and a string three " may be employed
Formula, two panels beam or three pieces beam are connected production simultaneously.
It is visible in summary：The U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system provided by the utility model, structure letter
It is single, easy for installation, there are enough intensity, stability, economy, compared to traditional U-shaped girder prefabricated pedestal, be applicable not only to hard
Quality base also has enough stability for soft foundation, is applicable to all kinds of soft foundations, highly practical, use scope
Extensively；Transfer beam, counter-force compression bar etc. are substituted using anchoring pier, the shakiness that transfer beam etc. is subject to eccentricity pressure to bring is avoided and is fixed
It rings, simple in structure, stability is good, and safe coefficient is high during work, compared with the prior art, has conspicuousness progress, has and promote
Application value.
It is last it is necessarily pointed out that：The foregoing is merely the preferable specific embodiment of the utility model, but this
The protection domain of utility model is not limited thereto, and any one skilled in the art discloses in the utility model
In technical scope, the change or replacement that can readily occur in should be covered within the scope of the utility model.
Claims (10)
1. a kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system, it is characterised in that：It is described including plain concrete cushion layer
Reinforced concrete floor is equipped at the top of plain concrete cushion layer, being equipped with several concrete drill holes below the plain concrete cushion layer is perfused
The pile foundation of stake, the pile foundation are connected through the plain concrete cushion layer with reinforced concrete floor, the armored concrete bottom
The top of plate is equipped with the bottom die platform for being used to support U-shaped beam, and the left and right ends of the reinforced concrete floor are equipped with anchoring pier
And gooseneck, the anchoring pier are equipped with jack, the gooseneck and anchor that sequentially pass through both ends of the prestressed strand in U-shaped beam
Gu Dun is connected with jack.
2. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：The bottom
Mould platform is set along reinforced concrete floor long axis direction.
3. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：The bottom
Mould platform includes fixed bottom die platform, removable bottom die platform and detachable bottom die platform.
4. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：The stake
Base becames one through the plain concrete cushion layer with reinforced concrete floor.
5. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：The steel
Reinforced concrete bottom plate is variable cross-section form.
6. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：Anchor pier
It is an integral structure with reinforced concrete floor.
7. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：Reinforcing bar mixes
Reinforcing bar in solidifying soil bottom plate is bound with the reinforcing bar in pile foundation, anchoring pier, bottom die platform, the formula that is welded as a whole structure.
8. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：The stake
The stirrup of vertical direction is equipped on base and anchoring pier, which mutually binds with the longitudinal reinforcement on reinforced concrete floor.
9. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：The anchor
Gu Dun is equipped with preformed hole, and the gooseneck is equipped with prestressed anchor, and the prestressed strand of U-shaped beam initially passes through the pre- of gooseneck
Stress anchorage, the preformed hole for being then passed through anchoring pier are connected with jack.
10. the U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system according to claim 1, it is characterised in that：Anchor pier
The left and right ends of reinforced concrete floor are symmetrically located at gooseneck.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721534290.3U CN207448750U (en) | 2017-11-16 | 2017-11-16 | A kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721534290.3U CN207448750U (en) | 2017-11-16 | 2017-11-16 | A kind of U-shaped girder prefabricated pedestal of peg board formula track traffic pre-tensioning system |
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| CN207448750U true CN207448750U (en) | 2018-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917653A (en) * | 2021-03-09 | 2021-06-08 | 湖北七杰新材料科技有限公司 | Prestressed concrete slab mould and manufacturing method thereof |
-
2017
- 2017-11-16 CN CN201721534290.3U patent/CN207448750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917653A (en) * | 2021-03-09 | 2021-06-08 | 湖北七杰新材料科技有限公司 | Prestressed concrete slab mould and manufacturing method thereof |
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