CN208899299U - A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder - Google Patents
A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder Download PDFInfo
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- CN208899299U CN208899299U CN201820434017.1U CN201820434017U CN208899299U CN 208899299 U CN208899299 U CN 208899299U CN 201820434017 U CN201820434017 U CN 201820434017U CN 208899299 U CN208899299 U CN 208899299U
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- box girder
- small box
- baffle plate
- plate
- diaphragm plate
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Abstract
The utility model is suitable for bridge structure engineering field, provide a kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder, Novel transverse baffle plate configuration includes: each beam of lateral direction penetrating at the span centre and fulcrum of small box girder bridge, laterally continuous steel bar stress is set, and thickeies tabula plate thickness.By the way that the diaphragm plate of lateral direction penetrating is arranged in span centre and fulcrum section, achieve the effect that enhance small box girder overall stiffness, so that the vertical deflection of new construction small box girder is significantly less than traditional structure under identical load situation；Laterally consecutive steel bar stress is set, the mechanical characteristic of novel diaphragm plate can be enhanced, effectively improve the bearing capacity of diaphragm plate and prevents its cracking；The thickness for thickening diaphragm plate, can add a placing of reinforcement, in the longitudinal direction and the characteristic of diaphragm plate is effectively enhanced on the basis of traditional structure.Under the action of new diaphragm plate, the cross direction profiles of load are more uniform, and have stronger repellence to hinge seam disease than traditional tabula plate structure.
Description
Technical field
The utility model belongs to bridge structure engineering field more particularly to a kind of for existing prefabricated assembled small box girder
Novel transverse baffle plate configuration form.
Background technique
Box beam be science of bridge building in a kind of girder construction of similar boxed-section shape, small box girder due to its bridge structure globality compared with
It is good, it is also relatively strong on the convenience of erection, have good economic and technical norms, building height low and quick construction etc. is excellent
Point is widely used in the bridge of 20~50m across footpath range.
For prefabricated PC concrete small box girder bridge, diaphragm plate is the important component of small box girder lateral ties, and
One of the major bearing structures of this type bridge, at home current specifications " highway reinforced concrete and prestressed concrete
Bridges and culverts design specification " have in (JTG D62-2004) clearly stipulate that must be provided with end diaphragm plate, curved box-shaped in box-girder bridge section
Intermediate diaphragm plate should be set in beam bridge section.This not only embodies critical role of the diaphragm plate in bridge structure, also illustrates cross
Partition approves acting in long-term engineering practice for box beam.
Other than diaphragm plate, small box girder, which also passes through seam between wing plate and deck structure, makes common stress to each other.
But construction method is improper, due to the influence of overloaded vehicle and maintenance not enough etc., precast concrete beam bridge often generates
Some diseases, the most common disease are exactly excessive and excessive crack occur.It is laterally rigid that the appearance in crack can not only reduce girder
Degree weakens lateral ties, also results in some endurance issues such as steel bar corrosion, it is laterally whole to even result in precast concrete beam bridge
Body is destroyed, and single-beam stress is formed.
The reason of small fabricated box girder bridge transverse direction globality declines mainly has: (1) typically occurring within the scope of runway, especially
It is, because loaded vehicle travel speed is slower, fast seldom to be occupied, so that the cracking frequency of runway is far high along loaded vehicle driving direction
In fast；(2) runway destroys the asphalt surface course of the hinge side of sewing on, and it is broken that fatigue occurs because bearing the percussion of wheel repeatedly
Bad, generally existing track and the longitudinally through crack with regularity often form a crushed zone when serious；(3) hinge seam is broken
Deteriorated case evil usually occurs after bridge is open to traffic 3,4 years, and has increased trend year by year.As taken maintenance and reinforcement not in time
Measure, hinge seam disease will be further exacerbated by, until entering hinge seam disease later stage, i.e. hinge seam destroys completely, and in two sides
Permanent faulting of slab ends is formed between plate.
Therefore, small box girder lateral ties, the construction measure for guaranteeing small box girder holistic resistant behavior and crucial skill are reinforced in research
Art is the important measure for improving bridge durability and safety.
Utility model content
This experiment new embodiment be designed to provide a kind of Novel transverse for existing prefabricated assembled small box girder every
Plate structure form, it is existing to solve the problems, such as.
To solve the above problems, the technical scheme adopted by the utility model is that a kind of be directed to existing prefabricated assembled small box girder
Novel transverse baffle plate configuration form, the Novel transverse baffle plate configuration include lateral direction penetrating plate structure: by small box girder internal partition, multi-disc
Wet seam and beam span middle diaphragm composition between small box girder.End floor beam is arranged in the beam end of small box girder bridge in novel diaphragm plate,
Partition is set in the middle part of beam, and reinforcement constitution upper beam is arranged laterally consecutive steel bar stress, vertical reinforcement is arranged in diaphragm.
The transverse steel of neotectonics diaphragm plate similarly penetrates through each girder, is formed together with concrete laterally a piece of whole
Beam.It in prefabrication process, is penetrated through in chamber across diaphragm plate, and lateral direction penetrating reinforcing bar is reserved at the both ends of diaphragm plate.In addition,
Novel small box girder compares the enlarged in thickness of traditional diaphragm plate across the thickness of diaphragm plate.
A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder provided by the utility model has
Beneficial effect includes:
Under Novel transverse baffle plate configuration, the lateral overall stiffness of small box girder is significantly greater than the small case under traditional tabula plate structure
Beam bridge.Under identical load tonnage, conventional construction small box girder bridge is big compared to the vertical deflection value of novel structure small box girder bridge,
And conventional construction small box girder under not damaged state vertical deflection and novel structure small box girder after two hinges are stitched and are damaged
Vertical deflection it is suitable.Illustrate after using Novel transverse baffle plate configuration, the whole lateral stiffness and cooperative bearing machine of small box girder bridge
It makes and the sensibility of hinge seam damage is declined.
For the cross direction profiles of load rule, novel structure small box girder is obviously more evenly than conventional construction small box girder.Together
When, with the increase of hinge seam degree of injury, the slope of side bar load-deflection curves is obviously steeper, illustrates the side bar of small box girder bridge
Beam stress is more unfavorable than in.Therefore, after using Novel transverse baffle plate configuration, small box girder bridge stitches the sensitivity destroyed to hinge more
Thus height illustrates that Novel transverse baffle plate configuration can not only provide higher lateral stiffness, but also than traditional tabula plate structure to hinge
Stitching disease consequence has stronger repellence.
Detailed description of the invention
In order to more clearly illustrate the technical scheme in the embodiment of the utility model, following accompanying drawings will introduce the present embodiment or
Key constructs measure employed in description of the prior art.It should be evident that the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the small box girder spaning middle section schematic diagram of the utility model lateral direction penetrating baffle plate configuration.
Fig. 2 is the small box girder floor map of the utility model lateral direction penetrating baffle plate configuration.
Fig. 3 is the small box girder diaphragm steel bar arrangement schematic cross-section of the utility model lateral direction penetrating baffle plate configuration.
In figure 1 be small box girder, 2 be small box girder internal partition, 3 between multi-disc small box girder wet seam, 4 between beam span centre tabula
Beam.5 be end floor beam, and 6 be partition.The 7 laterally consecutive steel bar stresses being arranged for neotectonics middle cross beam, 8 be vertical steel in diaphragm
Muscle.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
Embodiment provided by the utility model is a kind of for the new of existing prefabricated assembled small box girder of the utility model
The embodiment of type diaphragm plate structural form is provided by the utility model a kind of for existing prefabricated assembled small as shown in Figure 1
The Novel transverse baffle plate configuration form schematic diagram of box beam, is illustrated in figure 2 the small box girder of the utility model lateral direction penetrating type diaphragm plate
Floor map, Fig. 3 are the small box girder diaphragm steel bar arrangement schematic cross-section of the utility model lateral direction penetrating type diaphragm plate.By
Fig. 1, Fig. 2 and Fig. 3 are it is found that in the structural form:
The small box girder 1 of two lateral connections is prefabricated assembled small box girder of existing form etc. than reduced scale schematic diagram.
Small box girder 1 deck-molding 31cm, top plate thickness 7cm, web thickness 5cm, the base plate thickness 6cm that Fig. 1 is provided,
Each O. gracilipes of small box girder can be adjusted according to practical structures and operation environment.
Further, span centre diaphragm 2 in box beam is set inside the small box girder 1, it is cast-in-place wet between beam span middle diaphragm 4 and beam
Seam 3 is transversely formed the diaphragm plate integrally penetrated through, plate thickness 12cm.
Fig. 2 gives full wafer small box girder model, is made of altogether 4 small box girders 1, passes through diaphragm plate 4 and cast-in-place wet seam 3
Connection, final top plate width 2600mm, full wafer small box girder set diaphragm plate 6 in two pieces of end diaphragm plates 5 and one piece.
Due to the novel entire box beam of diaphragm plate lateral direction penetrating, construction technology is slightly different compared with traditional approach.It needs first to set up
Inner template and outer template, pour small box girder internal partition 2 at middle diaphragm plate while pouring small box girder 1.Then, remove internal model and
External mold, diaphragm plate 4 between cast-in-place wet seam 3 and beam.Finally, pouring small box girder end diaphragm plate 5.
Fig. 3 gives the reinforcement constitution figure of the novel diaphragm plate of small box girder, and entire diaphragm plate lays reinforcing bar on cross section, horizontal
To through multiple small box girders；On vertical section, traditional structure is single reinforcing bar, and double reinforcing bar 7 is arranged in new construction.
A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder provided by the utility model, with mark
Quasi- 30m prefabricated small box girder is embodiment, by way of improving traditional diaphragm plate, allows novel diaphragm plate lateral direction penetrating small box girder knot
Structure thickeies tabula plate thickness to the 1/45~1/55 of small box girder across footpath, increases the diaphragm plate ratio of reinforcement to reach enhancing diaphragm plate
Effect.Under Novel transverse baffle plate configuration, the lateral overall stiffness of small box girder is significantly greater than the small box girder under traditional tabula plate structure
Bridge.For the cross direction profiles of load rule, novel structure small box girder is obviously more evenly than conventional construction small box girder.Therefore, it adopts
After Novel transverse baffle plate configuration, the sensitivity that small box girder bridge destroys hinge seam is higher, thus illustrates Novel transverse baffle plate configuration
Higher lateral stiffness can be not only provided, but also there is stronger repellence to hinge seam disease than traditional tabula plate structure.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Any modifications, equivalent replacements, and improvements etc. done within the spirit and principle of utility model, should be included in the utility model
Protection scope within.
Claims (3)
1. the Novel transverse baffle plate configuration form of pair existing prefabricated assembled small box girder, which is characterized in that the tabula plate structure shape
Formula includes:
Lateral direction penetrating baffle plate configuration between the prefabricated assembled small box girder (1) of multi-disc lateral connection, lateral direction penetrating baffle plate configuration
Including small box girder internal partition (2), wet seam (3) and beam span middle diaphragm (4) between multi-disc small box girder are generally arranged in beam end
Partition (6) are arranged in the middle part of beam in end floor beam (5).
2. small box girder Novel transverse baffle plate configuration form according to claim 1, it is characterized in that the steel of the tabula plate structure
Muscle structural form:
Vertical reinforcement (8) in laterally consecutive steel bar stress (7) and diaphragm including the setting of neotectonics middle cross beam.
3. small box girder Novel transverse baffle plate configuration form according to claim 1, it is characterized in that the tabula plate structure every
Plate thickness:
By way of improving traditional diaphragm plate, novel diaphragm plate lateral direction penetrating small box girder structure is allowed, thicken tabula plate thickness and arrive
The 1/45~1/55 of small box girder across footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820434017.1U CN208899299U (en) | 2018-03-21 | 2018-03-21 | A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820434017.1U CN208899299U (en) | 2018-03-21 | 2018-03-21 | A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208899299U true CN208899299U (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820434017.1U Expired - Fee Related CN208899299U (en) | 2018-03-21 | 2018-03-21 | A kind of Novel transverse baffle plate configuration form for existing prefabricated assembled small box girder |
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| CN (1) | CN208899299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593482A (en) * | 2020-12-04 | 2021-04-02 | 邹宇 | Prefabricated assembled concrete diaphragm structure and construction method |
-
2018
- 2018-03-21 CN CN201820434017.1U patent/CN208899299U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593482A (en) * | 2020-12-04 | 2021-04-02 | 邹宇 | Prefabricated assembled concrete diaphragm structure and construction method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Xu Anqi Document name: Notice of termination of patent |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190524 Termination date: 20200321 |
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| CF01 | Termination of patent right due to non-payment of annual fee |