CN109440634A - The prefabricated high strength concrete hollow bent cap structure that internal model can be taken off - Google Patents
The prefabricated high strength concrete hollow bent cap structure that internal model can be taken off Download PDFInfo
- Publication number
- CN109440634A CN109440634A CN201811507760.6A CN201811507760A CN109440634A CN 109440634 A CN109440634 A CN 109440634A CN 201811507760 A CN201811507760 A CN 201811507760A CN 109440634 A CN109440634 A CN 109440634A
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- Prior art keywords
- bent cap
- bottom plate
- cavity
- internal model
- taken
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- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 208000002925 dental caries Diseases 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 15
- 208000020442 loss of weight Diseases 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000007596 consolidation process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses the prefabricated high strength concrete hollow bent cap structures that internal model can be taken off, including bent cap bottom plate, opening up cavity, bottom plate circular hole and bent cap web, bent cap bottom plate is provided with the opening up cavity of multi-compartment distribution, bent cap bottom plate is provided with multiple bottom plate circular holes being spaced apart, bottom plate circular hole is communicated with opening up cavity, the both ends of bent cap bottom plate are provided with bent cap end solid area, bent cap pier top solid area is provided on bent cap bottom plate, the front and rear part of bent cap bottom plate is provided with bent cap web.Beneficial effects of the present invention: bent cap is used the structure of integral prefabricated assembly by the present invention, reduce the influence of Construction on Environment, the bent cap that compares uses merogenesis segmented mode precast assembly, this patent bent cap overall performance is more excellent, stress performance is more preferable, more traditional equal loss of weight of solid section bent cap nearly 25%~30%, and internal model can be taken off and recycle, convenient construction has biggish economic benefit.
Description
Technical field
The present invention relates to the prefabricated high-strength concretes that prefabricated bridge construction technique field more particularly to internal model can be taken off
Hollow cap girder construction.
Background technique
Currently, the theory of bridge prefabrication assembly expands to substructure by superstructure, to full prefabricated bridge
Direction is fast-developing.The range of prefabricated components gradually covers girder, bridge pier, abutment, basis, anti-collision wall, bent cap etc..It is entirely prefabricated to apply
Construction is convenient and quick, quality is reliable and stable, influences the features such as small to traffic and environment with it for work technique, in states such as America and Europe, Japan
Family is used more and more.Urban elevated bridge is limited by ground bypass form of fracture, it is sometimes desirable to use great cantilever
Pre-stressed concrete coping.Increase under great cantilever pre-stressed concrete coping bridge using significant spatial, bridge lateral crosses over energy
Power is larger, and bent cap sectional dimension can be done more light and handy, therefore meets in current urban viaduct using relatively broad
Public aesthetic conceptions, have broad application prospects.
It is as prefabricated in used since the general scale of construction of bent cap is larger, very high requirement is proposed to transport and lifting.Therefore
Bent cap is generally constructed using cast-in-place method, this not only needs to set up and remove support bracket, carries out dangerous high altitude operation, also serious
Constrain construction speed.It with the development of bulk transport, lifting equipment and new material, provides the foundation for industrial upgrading, for lid
The prefabricated of beam provides possibility.But the lightness of current bent cap is still to be segmented based on prefabricated method, so that splicing seams
As the key constructs for influencing bent cap stress performance.For the most common queen post great cantilever bent cap, splicing seams are arranged in centre
When bent cap is divided into two sections, it is ensured that seam stress is smaller, but needs to be arranged the wet seam of one fixed width between segment, and scene is spelled
Temporary support is needed when connecing, and is constructed relatively complicated.When bent cap is divided into three sections on the outside of pier stud by splicing seams setting, it is not necessarily to wet seam
With live temporary support, but splicing seams stress is larger, unfavorable to the stress performance of bent cap entirety.It is vertical layered bent cap is divided under
When portion is prefabricated and the cast-in-place two parts in top, bent cap globality is preferable, but there are problems that it is prefabricated with cast-in-place Partial seams face processing,
And scene needs to pour a large amount of concrete.Therefore, integral prefabricated bent cap globality is best, no matter from construct convenient or stress
It is all substantially better than for the angle of performance and is segmented prefabricated bent cap.But the bent cap weight designed using traditional solid section compared with
Weight, the carriage of special cargo and lifting equipment expense for needing to put into are high, can not be taken out simultaneously using the bent cap internal model that box-type section designs
Recycling, to seriously affect the economic performance of integral prefabricated bent cap.In conclusion the weight and cross-sectional shape of bent cap are logical
The key that often can implement and how to implement as precast assembly scheme.If in can reduce bent cap self weight and capable of taking out
Mould realizes that the integral prefabricated of bent cap will can generate good economic benefit, while also optimizing the stress performance of bent cap, convenient
Construction.
Therefore, those skilled in the art, which need to develop, a kind of integral prefabricated be not only able to satisfy design requirement but also can facilitate construction
Lightness bent cap structure.
Those skilled in the art are dedicated to solving above-mentioned technological deficiency.
Summary of the invention
In view of the above drawbacks of the prior art, technical purpose of the invention be to provide a kind of internal model can be taken off it is prefabricated
High strength concrete hollow bent cap structure.
To realize the above-mentioned technical purpose, the present invention provides the prefabricated high strength concrete hollow bent cap knots that internal model can be taken off
Structure, including bent cap bottom plate, opening up cavity, bottom plate circular hole and bent cap web, the bent cap bottom plate is provided with multi-compartment point
The opening up cavity of cloth, the bent cap bottom plate are provided with multiple bottom plate circular holes being spaced apart, the bottom plate circular hole
It is communicated with the opening up cavity, the both ends of the bent cap bottom plate are provided with bent cap end solid area, the bent cap bottom
It is provided with bent cap pier top solid area on plate, superstructure support, the bent cap are provided at the top of the bent cap pier top solid area
The front and rear part of bottom plate is provided with bent cap web；It further include bent cap top plate, the bent cap top plate is provided with multiple be spaced apart
Downward opening cavity；The upper end of the bent cap top plate is provided with multiple superstructure supports；The both ends of the bent cap top plate are set
It is equipped with buried anchorage.
Preferably, presstressed reinforcing steel is connected between the adjacent two buried anchorages.
Preferably, medial septum plate is provided between the adjacent downward opening cavity.
Beneficial effects of the present invention:
Bent cap is used the structure of integral prefabricated assembly by the present invention, and compare cast-in-place structural, reduces the live duration, is reduced
The influence of Construction on Environment.The bent cap that compares uses merogenesis segmented mode precast assembly, and this programme bent cap overall performance is more excellent, by
Power performance is more preferable, more traditional equal loss of weight of solid section bent cap nearly 25%~30%, and on-site consolidation reduces large-scale work when constructing
The use of journey equipment, the difficulty for reducing on-site consolidation construction, save site operation measure cost, reduce transhipment bent cap mistake
Because bent cap preponderance is damaging caused by the circuit surface in journey, internal model can be taken out and reuse in two schemes,
Greatly improve the economic performance of precast hollow bent cap.
Detailed description of the invention
Fig. 1 is the structural map of the embodiment of the present invention 1；
Fig. 2 is in Fig. 1 along line A-A sectional view；
Fig. 3 is deformed bar arrangement schematic diagram in embodiment 1；
Fig. 4 is the structural map of the embodiment of the present invention 2；
Fig. 5 is in Fig. 4 along line B-B sectional view；
Fig. 6 is deformed bar arrangement schematic diagram in embodiment 2.
Marked in the figure: 1, bottom plate circular hole, 2, opening up cavity, 3, bent cap end solid area, 4, superstructure support,
5, bent cap web, 6, bent cap bottom plate, 7, presstressed reinforcing steel, 8, buried anchorage, 9, bent cap top plate, 10, intermediate diaphragm plate, 11, bent cap
Pier top solid area, 12, downward opening cavity.
Specific embodiment
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Such as Fig. 1 is simultaneously combined 2 to shown in Fig. 6, the prefabricated high strength concrete hollow bent cap structure that internal model can be taken off, including bent cap
Bottom plate 6, opening up cavity 2, bottom plate circular hole 1 and bent cap web 5, the bent cap bottom plate 6 are provided with the institute of multi-compartment distribution
State opening up cavity 2, the bent cap bottom plate 6 is provided with multiple bottom plate circular holes 1 being spaced apart, the bottom plate circular hole 1 with
The opening up cavity 2 communicates, and the both ends of the bent cap bottom plate 6 are provided with bent cap end solid area 3, the bent cap bottom
Bent cap pier top solid area 11 is provided on plate 6, the top of the bent cap pier top solid area 11 is provided with superstructure support 4, institute
The front and rear part for stating bent cap bottom plate 6 is provided with bent cap web 5.
Further, further include bent cap top plate 9, the bent cap top plate 9 be provided with it is multiple be spaced apart it is downward opening
Cavity 12, the upper end of the bent cap top plate 9 are provided with multiple superstructure supports 4.
Wherein, the both ends of the bent cap top plate 9 are provided with buried anchorage 8, are connected between the adjacent two buried anchorage 8
Presstressed reinforcing steel 7.
In addition, being provided with medial septum plate 10 between the adjacent downward opening cavity 12.
Bent cap is used the structure of integral prefabricated assembly by the present invention, and compare cast-in-place structural, reduces the live duration, is reduced
The influence of Construction on Environment.The bent cap that compares uses merogenesis segmented mode precast assembly, and this programme bent cap overall performance is more excellent, by
Power performance is more preferable, calculation shows that, the more traditional equal loss of weight of solid section bent cap nearly 25%~30% of the technical solution of this patent.It is existing
The difficulty for reducing the use of heavy construction equipment when the assembling construction of field, reducing on-site consolidation construction, saves site operation
Measure cost reduces during transhipment bent cap because bent cap preponderance is the damage caused by the circuit surface, meanwhile, two schemes
Middle internal model can be taken out and reuse, and the economic performance of precast hollow bent cap is greatly improved.
As shown in Figure 1, the embodiment 1 of this patent, proposes opening up prefabricated high strength concrete hollow bent cap, this reality
The superstructure across footpath for applying a Bridge is 30~35m, the wide 23~26m of bridge.It is formed in opening up using internal steel form
Portion's cavity, punching block bottom are fixed by the circular hole reserved on bent cap bottom plate convenient for internal model, when preventing casting concrete in internal model
Floating, Near Circular Hole In A, which adds reinforcing bar, on bottom plate prevents stress raisers.Internal cavities configure surface layer anticracking reinforced mesh, support and
At pier top position, bent cap is still solid section, facilitates bent cap to connect by grout sleeve with pier stud, after bent cap reaches certain age
Internal steel form is taken out, prestressing force is vertically divided into three arrangements and sets, and tensioning in two batches, both ends are all made of buried anchorage.
As shown in figure 4, the embodiment 2 of this patent, proposes downward opening prefabricated high strength concrete hollow bent cap.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (3)
1. the prefabricated high strength concrete hollow bent cap structure that internal model can be taken off, it is characterised in that: including bent cap bottom plate (6), opening
Cavity (2), bottom plate circular hole (1) and bent cap web (5) upward, the bent cap bottom plate (6) are provided with the described of multi-compartment distribution
Opening up cavity (2), the bent cap bottom plate (6) are provided with multiple bottom plate circular holes (1) being spaced apart, the bottom plate circular hole
(1) it is communicated with the opening up cavity (2), the both ends of the bent cap bottom plate (6) are provided with bent cap end solid area
(3), it is provided with bent cap pier top solid area (11) on the bent cap bottom plate (6), is set at the top of the bent cap pier top solid area (11)
It is equipped with superstructure support (4), the front and rear part of the bent cap bottom plate (6) is provided with bent cap web (5)；It further include bent cap top plate
(9), the bent cap top plate (9) is provided with multiple downward opening cavitys (12) being spaced apart；The bent cap top plate (9) it is upper
End is provided with multiple superstructure supports (4)；The both ends of the bent cap top plate (9) are provided with buried anchorage (8).
2. the prefabricated high strength concrete hollow bent cap structure that internal model as described in claim 1 can be taken off, it is characterised in that: adjacent
Presstressed reinforcing steel (7) are connected between the two buried anchorages (8).
3. the prefabricated high strength concrete hollow bent cap structure that internal model as claimed in claim 1 or 2 can be taken off, it is characterised in that:
Medial septum plate (10) are provided between the adjacent downward opening cavity (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507760.6A CN109440634B (en) | 2018-12-11 | 2018-12-11 | Prefabricated high-strength concrete hollow bent cap structure with removable internal mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507760.6A CN109440634B (en) | 2018-12-11 | 2018-12-11 | Prefabricated high-strength concrete hollow bent cap structure with removable internal mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109440634A true CN109440634A (en) | 2019-03-08 |
| CN109440634B CN109440634B (en) | 2024-02-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811507760.6A Active CN109440634B (en) | 2018-12-11 | 2018-12-11 | Prefabricated high-strength concrete hollow bent cap structure with removable internal mold |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811642A (en) * | 2019-03-12 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | Assembled prefabricated assembly bent cap structure and its construction method |
| CN109868753A (en) * | 2019-04-18 | 2019-06-11 | 上海市城市建设设计研究总院（集团）有限公司 | Precast assembly pier consolidation structure and its construction method |
| CN109881574A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of external prestressing steels |
| CN109881575A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of prestressing with bond muscle |
| CN112878181A (en) * | 2021-01-13 | 2021-06-01 | 南京工业大学 | Precast concrete combined bent cap adopting corrugated steel shell and assembling method thereof |
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| CN209619836U (en) * | 2018-12-11 | 2019-11-12 | 上海市城市建设设计研究总院（集团）有限公司 | The prefabricated high strength concrete hollow bent cap structure that internal model can be taken off |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811642A (en) * | 2019-03-12 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | Assembled prefabricated assembly bent cap structure and its construction method |
| CN109811642B (en) * | 2019-03-12 | 2024-03-12 | 上海市城市建设设计研究总院（集团）有限公司 | Assembled prefabricated assembled bent cap structure and construction method thereof |
| CN109868753A (en) * | 2019-04-18 | 2019-06-11 | 上海市城市建设设计研究总院（集团）有限公司 | Precast assembly pier consolidation structure and its construction method |
| CN109881574A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of external prestressing steels |
| CN109881575A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of prestressing with bond muscle |
| CN109881575B (en) * | 2019-04-18 | 2024-03-12 | 上海市城市建设设计研究总院（集团）有限公司 | Pi-shaped cross section prefabricated bent cap adopting internal prestressed tendons and prefabricating method thereof |
| CN109868753B (en) * | 2019-04-18 | 2024-03-12 | 上海市城市建设设计研究总院（集团）有限公司 | Prefabricated assembled pier beam consolidation structure and construction method thereof |
| CN109881574B (en) * | 2019-04-18 | 2024-04-09 | 上海市城市建设设计研究总院（集团）有限公司 | Pi-shaped cross section prefabricated bent cap adopting external prestressed tendons and prefabricating method thereof |
| CN112878181A (en) * | 2021-01-13 | 2021-06-01 | 南京工业大学 | Precast concrete combined bent cap adopting corrugated steel shell and assembling method thereof |
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| Publication number | Publication date |
|---|---|
| CN109440634B (en) | 2024-02-06 |
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