CN202577381U - Repairing and reinforcing structure for ocean splash zone pile foundation - Google Patents
Repairing and reinforcing structure for ocean splash zone pile foundation Download PDFInfo
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- CN202577381U CN202577381U CN 201120267650 CN201120267650U CN202577381U CN 202577381 U CN202577381 U CN 202577381U CN 201120267650 CN201120267650 CN 201120267650 CN 201120267650 U CN201120267650 U CN 201120267650U CN 202577381 U CN202577381 U CN 202577381U
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Abstract
The utility model provides a repairing and reinforcing structure for an ocean splash zone pile foundation. The repairing and reinforcing structure is characterized in that a corrosion-resisting and anti-cracking wrapping layer is disposed on the pile repair area of an ocean splash zone through pouring. The construction method of the repairing and reinforcing structure comprises the steps of fixing an end hoop at the bottom of the repair area after treatment of a surface between a repair area pile and the corrosion-resisting and anti-cracking wrapping layer, installing an outer mould, and forming the corrosion-resisting and anti-cracking wrapping layer through pouring. The repairing and reinforcing structure is capable of resisting corrosion caused by alternation of wetting and drying and chloride penetration in the splash zone and resisting temperature difference and ocean wave impact in the splash zone, thereby guaranteeing a pile body to be durable in the environment with serious corrosion.
Description
Technical field
The utility model belongs to port works, technical field of bridge engineering, relates to the reinforcing recovery technique of the pile foundation of marine environment lower terminal and bridge, especially spatters the repairing and reinforcement structure of district's pile foundation for the ocean wave.
Background technology
The harbour engineering structure is in the ocean highly corrosive environments; Especially wave spatters plot structure and partly is in very abominable chlorion erosion environment; The endurance issues that ubiquity is comparatively serious, and the corrosion of steel bar that villaumite causes is the subject matter that present port works faces.In long piled wharf and bridge spanning the sea structure, pile foundation safe and reliable particularly important.Wave more than high water mark spatters the district, and pile body suffers morning and evening tides, sea beat effect, and chlorion is easy to gather; The concrete chloride ion that is in non-full water state is easier to spread to percdation; And this regional oxygen supply is abundant, and the corrosion process very easily takes place, and is having a strong impact on the endurance quality of pile body.The reliability at this position is directly connected to the safe, reliable of whole pile body even total.
For steel pipe pile, although excellent mechanical property is arranged, there is the weakness of inborn corrosion-resistant, particularly spatter the position, district at wave.Current, usually use in the engineering and reserve corrosion allowance+coating protection+cathodic protection, but these anti-corrosion measures spatter the district at wave and be still less reliable, only continue just to need to be serviced in several years, greatly increased daily maintenance cost.General still the need need be taked independent anti-corrosion measure in this zone, like measures such as metal spraying, organic coating, inorganic coating and protective jacket protections.But these measures also be short-term or mid-term maintenance scheme, can not guarantee the endurance quality of dock structure during whole operation.
By contrast, Big Pipe Pile and PHC stake have the characteristics that durability is high, anti-permeability performance is good, but its anti-bending bearing capacity is far below steel pipe pile, and the pile sinking slope is little, and is impacting under the bigger situation of number of times, occurs pile body cracking and the bad phenomenon of stake bursting easily.Secondly, the passing ships below some bridges may rub the pile body sidewall, and its more weak impact property possibly cause concrete cracking even partial layer to come off.These situation all can greatly weaken concrete durability, reduce its normal application life, must carry out some necessary reparations, could satisfy the requirement of durability aspect.
Summary of the invention
The utility model technical problem to be solved provides the repairing and reinforcement structure that a kind of ocean wave spatters district's pile foundation; Can resist the corrosion function that wave spatters district's alternation of wetting and drying, chloride permeability effectively; The opposing temperature difference and sea beat effect guarantee the endurance quality of pile body under the ambient conditions of this heavy corrosion.
The utility model is realized through following technical scheme: the corrosion-resistant anticracking integument of district's surface casting is repaired in its wave spatters the district in corresponding ocean stake; Through the interface of repairing between district's stake and the corrosion-resistant anticracking integument is handled; Repairing bottom, district anchor portion hoop; External mold is installed, is implemented to build corrosion-resistant anticracking integument then.
The material of said corrosion-resistant anticracking integument can adopt superhigh tenacity cement-base composite material UHTCC; It is made up of short fiber and mortar matrix; The short fiber kind of admixture is one or more in vinal, polyethylene fibre, the aromatic polyamide fibre, and the volume volume is 1 ~ 3% of a UHTCC cumulative volume; The components by weight of mortar matrix is a cement: water: meticulous aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin=1: (0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4), and the maximum particle diameter of meticulous aggregate is not more than 0.5 mm; During the varying in weight of meticulous aggregate, flyash, silicon ash, granulated blast-furnace slag, metakaolin is zero; Meanwhile; An amount of chemical admixture of admixture according to actual needs, the water reducing agent as 0.2% ~ 3%, 0.05% ~ 0.3% antifoaming agent, 0.003% ~ 0.02% air entraining agent, 0.03% ~ 0.3% thickener etc.
Said superhigh tenacity cement-base composite material UHTCC has self-compacting ability, and convenient construction need not vibrate.
Said stake is a steel pipe pile, and said interface processing is arranged on surface, stake reparation district and is provided with shear connector for carrying out blasting treatment to repairing the surface, district, and whole reparation district is by the rust prevention by applying liquid material coating.Said shear connector is peg or Z bar muscle.
Said stake is a concrete tubular pile, and said interface processing is treated to matsurface for dashing hair to surface, the reparation district of stake.Corrosion-resistant anticracking integument thickness surpasses 50 mm, is drilled with a plurality of connecting holes on surface, stake reparation district, and said repairing and reinforcement structure is provided with shear connector, and said shear connector is connected with said connecting hole.Said shear connector is L shaped dowel.Shear connector and connecting hole be coated with adhesive respectively, shear connector is implanted in the connecting hole to bond then.
Said end hoop is that thickness is the annular angle steel form of 4 ~ 14 mm, and along the circumferential separated stiffener of laying, the position that contacts with pile body around the hoop inboard, end is provided with the rubber pad.
Owing to adopt the technical scheme of the utility model; Make pile body and the corrosion-resistant anticracking integument tight bond of repairing the district together; Can collaborative work; Constitution system has not only guaranteed the endurance quality that the pile body structure is spattered the district at the very serious wave of corrosion, and the reciprocal percussion that can resist this regional temperature difference and wave.Exempt regular regular maintenance, prolonged the application life of pile body, have remarkable economic efficiency.Particularly for steel pipe pile; Common recovery technique only has the anticorrosion life-span about 10 years, and adopts the reinforcing recovery technique of the utility model, realizes " permanent " of pile body protected (> 50 a); Its anticorrosion life-span can even can reach 100 years, and its running cost of practicing thrift is considerable.
Description of drawings
Fig. 1 repairs the plan view of steel pipe pile for the utility model.
Fig. 2 is the shop detail drawing that the utility model technology is repaired steel pipe pile.
Fig. 3 is the sectional drawing that the utility model technology is repaired steel pipe pile.
Fig. 4 is the sectional drawing of the utility model technology rehabilitating concrete stake.
Among the figure: 1: corrosion-resistant anticracking integument; 2: peg; 3: the steel pipe pile lining; 4: the concrete pile body; 5: dowel.6: the end hoop; 7: rubber pad; 8: stiffener 9: soft conduit; 10: steel semicircle template.
The specific embodiment
The embodiment of the pile tube that the utility model provided is following:
According to actual corrosion situation, delimit wave and spatter district and following 1 m scope thereof as repairing area, repairing altogether highly is 3 m, the repairing thickness t is 70 mm.The concrete parameter of steel pipe pile is diameter 1200 mm, wall thickness 20 mm, Q345 steel.The practical implementation step is following:
(1) at first blasting treatment is carried out with quartz sand in the anticorrosion position of large tracts of land, remove surface rusty stain, hand cleaning is further adopted at the serious position of other corrosions, or knocks out floating rust with hammer.Root out the bulge of floating rust and adhere to marine growth (oyster etc.) with steel shovel, the marine alga that adheres to steel brush and coarse sandpaper removing etc.
(2) by certain pitch arrangement shear connector, the mode through weld stud 2 strengthens the interface cementitiousness, guarantee steel pipe pile lining 3 and corrosion-resistant anticracking integument 1 both bond reliably, collaborative work.
In the present embodiment, the shear connector of layout is peg 2 (length is 35 mm, and diameter is 8mm); Begin to be provided with peg from top and bottom apart from 50 mm, top and bottom are provided with 3 row's pegs respectively, and its spacing longitudinally reaches and laterally is 100 mm; Whenever at a distance from 200 mm 1 row's peg is set in the middle part, the two rows dislocation is arranged to plum blossom shape, then it is welded on the steel pipe pile lining; Guarantee that the interface bonding is reliable, the crack, interface do not occur.At restoring area spraying one deck protective coating, further improve its anti-corrosion capability then.
(3) at the restoring area lower limb end hoop 6 is set, said end hoop is the annular angle steel form of thickness 10 mm, and lays stiffener 8 at a distance from 300 ~ 400 mm, guarantees under the working load effect, not topple.Steel semicircle template 10 is installed above end hoop 6, and is filling up rubber filler strip 7 between two semicircle templates 10 and between end hoop 6 and pile tube, stop seawater to get into.At semicircle template 10 tops positioning checkpoint is set, guarantees consistent wall thickness.
(4) weight ratio of the mortar matrix composition of corrosion-resistant anticracking integument material therefor UHTCC1 is a cement: water: sand (meticulous aggregate): flyash: silicon ash: water reducing agent=1:1.58:1.5:2.0:0.15:0.02; And admixture volume volume is 2% polyvinyl alcohol short fiber of UHTCC cumulative volume, and the maximum particle diameter of sand is 0.2 mm.UHTCC mortar matrix good fluidity, not only fiber can evenly disperse, and the UHTCC mixture can also reach the self-compaction requirement, and good cohesiveness and water retention are arranged.
(5) UHTCC that stirs is transported in the soft conduit 9 through slurry filling machine, from bottom to up continuous placing.Evenly arrange around the pile body 4 delivery hoses 9 from the cross section four direction carry mixture simultaneously, slowly upwards promote flexible pipe simultaneously, not only guaranteed speed of application, also guaranteed to wrap up in outside each position repair layer and built high level of synchronization and rise, finish until building.
(6) build end after, carry out natural curing, treat with condition curing test block intensity reach normal intensity 75% the back form removal.
According to its actual corrosion situation, delimit wave and spatter district and following 1 m scope thereof as repairing area, repairing altogether highly is 3 m, the repairing thickness t is 70 mm.The practical implementation step is following:
(1) at first with the loose concrete chisel removal of severe local corrosion location, then whole restoring area is dashed hair and handle, remove surperficial laitance, expose fresh interface, and make the surface become rough and uneven in surface shape, dash the hair degree of depth about 3 ~ 5 mm.
(2) surpass 50 mm if repair thickness, then shear connector 5 need be set in addition, guarantee that UHTCC and original concrete binding of newly building are reliable, present embodiment is provided with said shear connector 5.
The L type dowel shear connector 5 of placement diameter 8 mm begins to be provided with connector 5 from top and bottom apart from 50 mm, longitudinally with laterally whenever at a distance from 200 mm 1 row's connector 5 is set, and the two rows dislocation is arranged to plum blossom shape.The connecting hole of uniform drill diameter 10 mm, the degree of depth 80 mm on pile body 4 surfaces; And dispose dust, filling adhesive in connecting hole then, and evenly spread upon on the shear connector 5; Shear connector 5 is inserted in the connecting hole, and its crotch direction is arranged along the pile body length direction.
Step afterwards is identical with step (3)-(6) of embodiment 1.
Claims (9)
1. an ocean wave spatters the repairing and reinforcement structure of district's pile foundation, and the corrosion-resistant anticracking integument of district's surface casting is repaired in the stake that it is characterized in that it wave spatters the district in corresponding ocean.
2. a kind of ocean as claimed in claim 1 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that said stake is steel pipe pile, arranges on surface, stake reparation district and is provided with shear connector, the anticorrosion with painting erosion resisting coating in whole reparation district.
3. a kind of ocean as claimed in claim 2 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that said shear connector is peg or Z bar muscle.
4. a kind of ocean as claimed in claim 1 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that said stake is concrete tubular pile, and said interface processing is treated to matsurface for dashing hair to surface, the reparation district of stake.
5. a kind of ocean as claimed in claim 4 wave spatters the repairing and reinforcement structure of district's pile foundation; It is characterized in that corrosion-resistant anticracking integument thickness surpasses 50 mm; Be drilled with a plurality of connecting holes on surface, stake reparation district; Said repairing and reinforcement structure is provided with shear connector, and said shear connector is connected with said connecting hole.
6. a kind of ocean as claimed in claim 5 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that said shear connector is L shaped dowel.
7. a kind of ocean as claimed in claim 6 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that shear connector and connecting hole coated with adhesive respectively.
8. a kind of ocean as claimed in claim 1 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that repairing bottom, district anchor portion hoop, and the end hoop is that thickness is the annular angle steel form of 4 ~ 14 mm, and the edge is circumferentially at a distance from laying stiffener.
9. a kind of ocean as claimed in claim 8 wave spatters the repairing and reinforcement structure of district's pile foundation, it is characterized in that the position that contacts with pile body around the hoop inboard, end is provided with the rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120267650 CN202577381U (en) | 2011-07-26 | 2011-07-26 | Repairing and reinforcing structure for ocean splash zone pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120267650 CN202577381U (en) | 2011-07-26 | 2011-07-26 | Repairing and reinforcing structure for ocean splash zone pile foundation |
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| Publication Number | Publication Date |
|---|---|
| CN202577381U true CN202577381U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120267650 Expired - Fee Related CN202577381U (en) | 2011-07-26 | 2011-07-26 | Repairing and reinforcing structure for ocean splash zone pile foundation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696375A (en) * | 2013-12-25 | 2014-04-02 | 长安大学 | Repair device for concrete anticorrosion coatings |
| CN106759563A (en) * | 2017-03-03 | 2017-05-31 | 上海申航基础工程有限公司 | A kind of device for pile foundation repairing and reinforcing and the construction method using the device |
| CN112281817A (en) * | 2020-11-12 | 2021-01-29 | 上海市城市建设设计研究总院（集团）有限公司 | Steel precast pile construction method suitable for water level fluctuation area |
-
2011
- 2011-07-26 CN CN 201120267650 patent/CN202577381U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696375A (en) * | 2013-12-25 | 2014-04-02 | 长安大学 | Repair device for concrete anticorrosion coatings |
| CN103696375B (en) * | 2013-12-25 | 2015-08-19 | 长安大学 | A kind of antiseptic concrete coating prosthetic appliance |
| CN106759563A (en) * | 2017-03-03 | 2017-05-31 | 上海申航基础工程有限公司 | A kind of device for pile foundation repairing and reinforcing and the construction method using the device |
| CN112281817A (en) * | 2020-11-12 | 2021-01-29 | 上海市城市建设设计研究总院（集团）有限公司 | Steel precast pile construction method suitable for water level fluctuation area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311121 room 106, No.7, Chengdong Road, Huawu village, Yuhang street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Gubang New Materials Co.,Ltd. Address before: 311121 room 106, No.7, Chengdong Road, Huawu village, Yuhang street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU GUHUA COMPOSITE MATERIAL TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 311121 room 106, No.7, Chengdong Road, Huawu village, Yuhang street, Yuhang District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU GUHUA COMPOSITE MATERIAL TECHNOLOGY Co.,Ltd. Address before: The city of Hangzhou in West Zhejiang province 310012 No. 1500 Building No. 2 room 317 Patentee before: HANGZHOU GUHUA COMPOSITE MATERIAL TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200330 Address after: 310052, Zhejiang province Hangzhou Binjiang District Long River Street East stream road 1276, 1 buildings, 9, 903 rooms Patentee after: HANGZHOU GUYIQIANG NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 311121 room 106, No.7, Chengdong Road, Huawu village, Yuhang street, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: Zhejiang Gubang New Materials Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20200726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |