CN204039902U - Bridge precast beam plate lower support structure and levelling device - Google Patents
Bridge precast beam plate lower support structure and levelling device Download PDFInfo
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- CN204039902U CN204039902U CN201420531067.3U CN201420531067U CN204039902U CN 204039902 U CN204039902 U CN 204039902U CN 201420531067 U CN201420531067 U CN 201420531067U CN 204039902 U CN204039902 U CN 204039902U
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- leveling groove
- leveling
- levelling device
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Abstract
A kind of bridge precast beam plate lower support structure and levelling device, the bearing that braced structures comprises beam slab and is provided with bottom it, the base plane of described beam slab is processed with the leveling groove of wedge shape, and top and the described leveling groove of described bearing are connected and fixed.Described leveling groove is made by levelling device, and levelling device comprises stretching bed seat and it raises flat-die tool, and described leveling die profile is corresponding with described leveling groove.The beneficial effects of the utility model are: after applying this device, avoid the destruction to construction stretching pedestal and steel plate because arranging wedge, improve the recycling efficiency of construction formwork, avoid simultaneously put the shrinkage strain of Zhang Yinqi plate-girder due to prestressing force may to the destruction of wedge, thus the construction accident that may cause.Greatly reduce difficulty of construction and percent defective, improve construction quality and benefit.
Description
Technical field
The utility model relates to bridge engineering field, is specifically related to the levelling device for the various precast hollow slab of leveling and simply supported beam and braced structures.
Background technology
At present, the application of the precast beam (hollowcore slab, small box girder etc.) that construction is simple, cost is low, the duration is short, quality is easy to control on road and bridge widely, and meets the related request of bridge standardized construction guide.The every sheet width of precast beam is generally 1.0m ~ 2.5m, bearing is installed should ensure horizontal direction, Bearing Seat Force is made to keep vertical direction, and Installation of beam slab must meet the requirement of road longitudinal grade, horizontal wall inscription and bridge deck drainage, in order to meet the installation requirement of bearing and beam slab simultaneously, need at the bottom of plate-girder to arrange wedge adjustment.Beam slab precasting process provides batch production, standardized production condition, and therefore pedestal becomes the working platform of precast beam, and will have enough to meet the need and reuse, and pedestal end face generally makes of steel plate.In order to prefabricated wedge, existing constructure scheme is cut as requested by wedge position pedestal, wedge-shaped impression is set, due to precast plate girder across footpath and oblique angles more, in Practical Project, slope changes greatly in length and breadth, precast pedestal is made often " to be cut " changed beyond recognition by wedge, not only difficulty of construction is large, and efficiency is low, and use will change pedestal end face steel plate several times, reduce the service efficiency of precast pedestal particularly end face steel plate, and construction quality is wayward.As shown in accompanying drawing 1-4, precast plate two ends all arrange wedge, the size according to wedge on pedestal is needed to cut, due to across the difference such as footpath, oblique angles, need to cut position has multiple, especially the hollowcore slab of pre-tensioning system construction, often stretching bed is longer, once prefabricated polylith beam slab, affects even more serious, and simultaneously prestressed structure causes beam slab to shrink after putting, prefabricated wedge is also easily stopped by stretching bed seat when plate-girder shrinkage strain, very easily fallen by card, thus cause leveling voussoir construction error, percent defective is very high.
Utility model content
In order to ensure construction quality, reducing difficulty of construction, improving efficiency of construction, greatly reduce pedestal top steel plate and change number of times, make wedge shape leveling size more accurate, overcome the deficiency in existing work progress, the utility model provides a kind of new bridge precast beam plate lower support structure and levelling device.
First provide bridge precast beam plate lower support structure, its technical scheme is: the base plane of described beam slab is processed with the leveling groove of wedge shape, and top and the described leveling groove of described bearing are connected and fixed.
Described leveling groove is square, and the height at leveling groove four angles is all different, is convenient to adjustment bridge vertical and horizontal gradient.
Then provide make above-mentioned leveling groove bridge precast beam plate bottom levelling device, its technical scheme is: comprise stretching bed seat and it raises flat-die tool, and described leveling die profile is corresponding with described leveling groove, concrete manufacturing process is: first need to make the leveling die corresponding with groove, this Mold Making is easy, cost is low, the groove location on precast pedestal is directly positioned over after completing, take suitable fixation, after above-mentioned work completes, carry out assembling reinforcement, formwork supporting plate, pouring concrete, after intensity meets the demands, put and open, hollowcore slab is under the effect of prestressed strand, arch camber, shrink, device and beam body displacement simultaneously, thus avoid the deficiency of existing scheme, therefore the utility model difficulty of construction is little, quality is easy to control, precast pedestal turnover rate is high, engineering cost reduces greatly.
The beneficial effects of the utility model are: after applying this device, avoid the destruction to construction stretching pedestal and steel plate because arranging wedge, improve the recycling efficiency of construction formwork, avoid simultaneously put the shrinkage strain of Zhang Yinqi plate-girder due to prestressing force may to the destruction of wedge, thus the construction accident that may cause.Greatly reduce difficulty of construction and percent defective, improve construction quality and benefit.
Accompanying drawing explanation
Fig. 1 is to wedge scheme of installation along bridge;
Fig. 2 is direction across bridge wedge scheme of installation;
Fig. 3 is wedge Plane Installation schematic diagram;
Fig. 4 is stretching bed seat wedge position perspective diagram;
Fig. 5 is to leveling groove location schematic diagram along bridge;
Fig. 6 is direction across bridge leveling groove location schematic diagram;
Fig. 7 is leveling groove location floor map;
Fig. 8 is levelling device structural representation;
In figure: (1) girder, (2) wedge, (3) precast beam, (4) bearing, (5) stretching bed seat, (6) voussoir mould, (7) wedge-shaped impression, (8) leveling groove, (9) leveling die.
Detailed description of the invention
Below in conjunction with accompanying drawing, for the construction of pretensioning prestressed concrete hollowcore slab, the utility model is described further.
Existing design and construction scheme is as Fig. 1-4, bottom hollowcore slab (precast beam 3) two ends, outstanding leveling wedge 2 is set, in order to adjust bridge vertical and horizontal gradient, wedge 2 four angle height are all different, want this wedge 2 of constructing accurately, first need to cut in wedge 2 corresponding stretching bed seat 5 position, then in stretching bed seat 5 notch after dicing, the voussoir mould 6 corresponding with wedge 2 is set, thus form wedge-shaped impression 7, first the construction of this mould is also wayward, after above-mentioned work completes, carry out assembling reinforcement, formwork supporting plate, pouring concrete, after intensity meets the demands, put and open, hollowcore slab is under the effect of prestressed strand, arch camber, shrink, for avoiding causing wedge to be destroyed because plate body distortion causes stretching bed seat notch and wedge to touch, the possible deflection of plate body need be calculated in advance, determine that notch size need take into full account the impact of this factor, after notch size is determined, just need to process between wedge and notch, this is again a uppity factor, this gap choke material should ensure outward appearance at the bottom of plate, wedge can not be hindered again to follow plate body distortion, therefore existing constructure scheme difficulty is large, quality is wayward, percent defective is high.
Levelling device of the present utility model is adopted then to avoid above-mentioned problem, specific design and constructure scheme are as Fig. 5-8, hollowcore slab (precast beam 3) bottom support bracket position, two ends arranges the leveling groove 8 of wedge shape, in order to adjust bridge vertical and horizontal gradient, leveling groove 8 four angle height are all different, want this leveling groove of constructing accurately, need to make the leveling die 9 corresponding with leveling groove 8, this Mold Making is easy, cost is low, the groove location on stretching bed seat 5 is directly positioned over after completing, take suitable fixation, after above-mentioned work completes, carry out assembling reinforcement, formwork supporting plate, pouring concrete, after intensity meets the demands, put and open, hollowcore slab is under the effect of prestressed strand, arch camber, shrink, device and beam body displacement simultaneously, thus avoid the deficiency of existing scheme, when bearing 4 and precast beam 3 are installed, the leveling groove 8 of the top of bearing 4 and precast beam 3 bottom surface is connected and fixed.The utility model difficulty of construction is little, quality is easy to control, and precast pedestal turnover rate is high, and engineering cost reduces greatly.
The utility model will originally need leveling wedge projecting at the bottom of plate to change into leveling groove that support position at the bottom of plate arranges wedge shape, according to the special processing and fabricating leveling die of design, stick on pedestal end face steel plate, thus avoid the problem of cutting prefabricated stretching bed seat, the leveling die of wedge-shaped impression easily makes simultaneously, cost is low, speed of application is fast, be easy to control construction quality, be equivalent to make pedestal steel plate become the permanent platform used with several pieces of leveling dies, but wedge shape leveling groove is set and needs solution problem, be exactly that concrete cover to reinforcement thickness may not meet code requirement, therefore wedge shape leveling groove bottom the beam slab that there is this situation is needed to increase, concrete cover is met the demands.Through the constructure scheme of above-mentioned improvement, by adjustment construction technology, improve construction method, thus avoid the deficiency of original constructure scheme, substantially increase efficiency of construction and construction quality, thoroughly eliminate the waste product produced because of wedge, reduce engineering cost.
For those skilled in the art, under the prerequisite not departing from the utility model principle, likely make some improvements and modifications to partial structurtes, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a bridge precast beam plate lower support structure, the bearing comprising beam slab and be provided with bottom it, is characterized in that: the base plane of described beam slab is processed with the leveling groove of wedge shape, and top and the described leveling groove of described bearing are connected and fixed.
2. bridge precast beam plate lower support structure according to claim 1, is characterized in that: described leveling groove is square, and the height at leveling groove four angles is all different.
3. for make leveling groove described in claim 1 or 2 bridge precast beam plate bottom a levelling device, it is characterized in that: comprise stretching bed seat and it raises flat-die tool, described leveling die profile is corresponding with described leveling groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531067.3U CN204039902U (en) | 2014-09-16 | 2014-09-16 | Bridge precast beam plate lower support structure and levelling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531067.3U CN204039902U (en) | 2014-09-16 | 2014-09-16 | Bridge precast beam plate lower support structure and levelling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204039902U true CN204039902U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531067.3U Expired - Fee Related CN204039902U (en) | 2014-09-16 | 2014-09-16 | Bridge precast beam plate lower support structure and levelling device |
Country Status (1)
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| CN (1) | CN204039902U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758842A (en) * | 2016-12-30 | 2017-05-31 | 中交第公路工程局有限公司 | Prefabricated case beam beam bottom wedge gradient adjusting method |
| CN110219244A (en) * | 2019-06-03 | 2019-09-10 | 中铁大桥局集团有限公司 | Box girder web template adjustment device and its application method at a kind of easement curve |
| CN115030487A (en) * | 2021-03-03 | 2022-09-09 | 中国葛洲坝集团第二工程有限公司 | System for supporting high-altitude partition concrete construction |
-
2014
- 2014-09-16 CN CN201420531067.3U patent/CN204039902U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758842A (en) * | 2016-12-30 | 2017-05-31 | 中交第公路工程局有限公司 | Prefabricated case beam beam bottom wedge gradient adjusting method |
| CN110219244A (en) * | 2019-06-03 | 2019-09-10 | 中铁大桥局集团有限公司 | Box girder web template adjustment device and its application method at a kind of easement curve |
| CN115030487A (en) * | 2021-03-03 | 2022-09-09 | 中国葛洲坝集团第二工程有限公司 | System for supporting high-altitude partition concrete construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150916 |
|
| EXPY | Termination of patent right or utility model |