CN101509259A - Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge - Google Patents
Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge Download PDFInfo
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- CN101509259A CN101509259A CNA2009100614036A CN200910061403A CN101509259A CN 101509259 A CN101509259 A CN 101509259A CN A2009100614036 A CNA2009100614036 A CN A2009100614036A CN 200910061403 A CN200910061403 A CN 200910061403A CN 101509259 A CN101509259 A CN 101509259A
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- pier shaft
- prefabricated pier
- cushion cap
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Abstract
A high-durability connecting method of a prefabricated pier shaft with a cushion cap of a bridge spanning the sea, relates to a big bridge pier with high-durability connecting between the prefabricated pier shaft and foundation in the sea corrosion environment; wherein, the prefabricated pier shaft, the cushion cap are connected with wet connector concrete in the middle, the under-part of the prefabricated pier shaft is provided with a flaring transition section and a straight line section, the reservation steel bars of the prefabricated pier shaft in the middle of the wet connector concrete are connected with the reservation steel bars of the cushion cap by double side welding, and a water-seal rubber strip is arranged between the prefabricated pier shaft and the cushion cap. The wet connector concrete is isolated with the sea corrosion environment by a prefabricated pier shaft wall, which puts an end to the situation that the injurious ingredient in the sea invades into the inner of the wet connector; the body of the prefabricated pier shaft is prefabricated in a land factory, therefore, the quality can be controlled effectively and the probability of the surface crack occurrence is lowered; employing the corrosion prevention system can greatly improve the self-durability of structure and effectively block corrosion channels, therefore, the service life of structure can be extended.
Description
Technical field
The present invention relates to a kind of at the bridge bridge pier that the high-durability connected mode is arranged between bridge prefabrication pier shaft and the basis under the marine corrosion environment.
Background technology
Along with the development of economic society, the construction of bridge spanning the sea is in the ascendant.Consider that the non-navigation bridge of general bridge spanning the sea accounts for the overwhelming majority and is in the marine site, specific bridge construction conditions such as construction operation zone apparent wind is big, wave is high, stream is anxious, the frequent generation of typhoon natural calamity weather, for reducing marine cast-in-place workload, reduce the offshore construction operating risk, guaranteeing construction quality, accelerating construction progress, the integral prefabricated lifting of the general employing of the non-navigation bridge of bridge spanning the sea pier construction is again with cushion cap basis ways of connecting.
Domesticly built and all occurred external crack in various degree, influenced presentation quality at the prefabricated pier shaft of building bridge spanning the sea and basic connecting portion; Simultaneously under marine environment, chlorion etc. corrode works inside by face crack easily to the harmful material of works, form the corrosion passage, reduce works application life.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide and a kind ofly can effectively reduce even stop external crack, effectively blocking-up corrosion passage improves the works durability, thus the prefabricated pier shaft of a kind of bridge spanning the sea in extending structure thing application life and the high-durability connected mode of cushion cap.
The implementation of the object of the invention is, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea and cushion cap, prefabricated pier shaft, cushion cap are connected with the wet joint concrete of centre, enlarging transition section, straightway are arranged at prefabricated pier shaft bottom, adopt two-sided being welded to connect between the reserved steel bar of the prefabricated pier shaft in the middle of the wet joint concrete and the reserved steel bar of cushion cap, bury the watertight rubber bar between prefabricated pier shaft and the cushion cap underground.
The present invention has the following advantages:
(1) prefabricated pier shaft wall is isolated with wet joint concrete and marine corrosion environment, stopped the situation that harmful components are invaded wet joint inside in the seawater at all, prefabricated pier shaft itself is because in the land prefabrication, quality can be effectively controlled, and the face crack probability of occurrence is less;
(2) employing of anticorrosive protection system has improved works self durability greatly under the marine corrosion environment, and has effectively blocked the corrosion passage, thereby has prolonged works application life.
Description of drawings
Fig. 1 is a structural front view of the present invention,
Fig. 2 is a upright cross-sectional view of the present invention,
Fig. 3 is that the watertight rubber bar is buried schematic diagram underground,
Fig. 4 is a sealing rubber strip drawing,
Fig. 5 is provided with schematic diagram for the prefabricated pier shaft of cushion cap end face outside weathering.
The specific embodiment
With reference to Fig. 1, prefabricated pier shaft 1 of the present invention, cushion cap 2 are connected with the wet joint concrete 3 of centre.Wet joint concrete 3 adopts the high-durability maritime concrete,
With reference to Fig. 2, prefabricated pier shaft 1 bottom is an enlarging transition section 12+ straightway 11.Prefabricated pier shaft 1 bottom enlarging transition section 12 height 〉=75cm, straightway 11 height 〉=50cm; Adopt two-sided being welded to connect between the reserved steel bar 4 of prefabricated pier shaft 1 and the reserved steel bar 5 of cushion cap 2; Bury twice watertight rubber bar 6 between prefabricated pier shaft 1 and the cushion cap 2 underground, be perfused with epoxy mortar between the twice watertight rubber bar.
When the present invention constructed, prefabricated pier shaft bottom enlarging transition section inboard was provided with shaped steel supporting leg 7 and supports as construction is interim.When building wet joint concrete 3, prefabricated pier shaft 1 is supported on the cushion cap 2 by steel leg 7 temporarily, all adopts flat filled weld in front and back to connect in succession between the pre-embedded steel slab 13 of steel leg 7 and prefabricated pier shaft 1 and the pre-embedded steel slab 14 of cushion cap 2.
With reference to Fig. 3, bury twice watertight rubber bar 6, two track pitch 20cm between prefabricated pier shaft 1 and the cushion cap 2 underground, construction finishes and utilizes Grouting Pipe 8 perfusion epoxy mortars between the inside and outside twice watertight rubber bar in back.
With reference to Fig. 4, the end band U type of the imbedding opening of watertight rubber bar, exposed junction band circular opening, such structure is easy to compression, and it is strong to adapt to deformability, and installs easily.
With reference to Fig. 5, cushion cap 2 end faces in the outside of prefabricated pier shaft 1 are provided with weathering 9, and there is the long straightway of 30cm on the top, slope, the gradient of weathering 9 〉=1.5%, and prefabricated pier shaft 1 seals with epoxy mortar with the contact surface of weathering 9.
Claims (8)
1, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea and cushion cap, it is characterized in that prefabricated pier shaft, cushion cap are connected with the wet joint concrete of centre, enlarging transition section, straightway are arranged at prefabricated pier shaft bottom, adopt two-sided being welded to connect between the reserved steel bar of the prefabricated pier shaft in the middle of the wet joint concrete and the reserved steel bar of cushion cap, bury the watertight rubber bar between prefabricated pier shaft and the cushion cap underground.
2, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 1 and cushion cap is characterized in that prefabricated pier shaft (1) bottom is enlarging transition section (12)+straightway (11).
3, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 1 and cushion cap is characterized in that prefabricated pier shaft bottom enlarging transition section inboard is provided with shaped steel supporting leg (7).
4, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 3 and cushion cap is characterized in that adopting flat filled weld in front and back to connect in succession between the pre-embedded steel slab (14) of the pre-embedded steel slab (13) of steel leg (7) and prefabricated pier shaft (1) and cushion cap (2).
5, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 1 and cushion cap, it is characterized in that burying twice watertight rubber bar (6) underground between prefabricated pier shaft (1) and the cushion cap (2), be perfused with epoxy mortar between the twice watertight rubber bar.
6, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 1 and cushion cap is characterized in that the end of imbedding of watertight rubber bar is with U type opening, exposed junction band circular opening.
7, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 1 and cushion cap is characterized in that cushion cap (2) end face in the outside of prefabricated pier shaft (1) is provided with weathering (9).
8, the high-durability connected mode of prefabricated pier shaft of a kind of bridge spanning the sea according to claim 7 and cushion cap is characterized in that the prefabricated pier shaft (1) and the contact surface of weathering (9) seal with epoxy mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100614036A CN101509259A (en) | 2009-04-03 | 2009-04-03 | Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100614036A CN101509259A (en) | 2009-04-03 | 2009-04-03 | Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge |
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| Publication Number | Publication Date |
|---|---|
| CN101509259A true CN101509259A (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100614036A Pending CN101509259A (en) | 2009-04-03 | 2009-04-03 | Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147460A (en) * | 2013-03-27 | 2013-06-12 | 郑州市大方实业有限公司 | Integrated prefabricated pier and foundation structure |
| CN104746422A (en) * | 2014-09-19 | 2015-07-01 | 杭州江润科技有限公司 | Bridge prefabricated hollow pier column post-poured connecting structure and construction method |
| CN106587855A (en) * | 2017-01-05 | 2017-04-26 | 蔡中元 | Anti-microbial and anti-corrosion concrete material for marine ecological engineering and preparation method for concrete material |
| CN106625998A (en) * | 2017-01-05 | 2017-05-10 | 周文婧 | Corrosion-resistant concrete prefabricated part for marine ecological engineering and preparation method thereof |
| CN107237253A (en) * | 2017-07-06 | 2017-10-10 | 苏交科集团股份有限公司 | Steel reinforced concrete combined bridge durability lifting construction and construction method |
| CN109440633A (en) * | 2018-11-20 | 2019-03-08 | 湖南工业大学 | Can positioning posture precast pier and cushion cap connecting structure |
-
2009
- 2009-04-03 CN CNA2009100614036A patent/CN101509259A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147460A (en) * | 2013-03-27 | 2013-06-12 | 郑州市大方实业有限公司 | Integrated prefabricated pier and foundation structure |
| CN104746422A (en) * | 2014-09-19 | 2015-07-01 | 杭州江润科技有限公司 | Bridge prefabricated hollow pier column post-poured connecting structure and construction method |
| CN106587855A (en) * | 2017-01-05 | 2017-04-26 | 蔡中元 | Anti-microbial and anti-corrosion concrete material for marine ecological engineering and preparation method for concrete material |
| CN106625998A (en) * | 2017-01-05 | 2017-05-10 | 周文婧 | Corrosion-resistant concrete prefabricated part for marine ecological engineering and preparation method thereof |
| CN107237253A (en) * | 2017-07-06 | 2017-10-10 | 苏交科集团股份有限公司 | Steel reinforced concrete combined bridge durability lifting construction and construction method |
| CN109440633A (en) * | 2018-11-20 | 2019-03-08 | 湖南工业大学 | Can positioning posture precast pier and cushion cap connecting structure |
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Open date: 20090819 |