CN105442590A - Reactive powder concrete pipe column for ocean engineering - Google Patents
Reactive powder concrete pipe column for ocean engineering Download PDFInfo
- Publication number
- CN105442590A CN105442590A CN201510993118.3A CN201510993118A CN105442590A CN 105442590 A CN105442590 A CN 105442590A CN 201510993118 A CN201510993118 A CN 201510993118A CN 105442590 A CN105442590 A CN 105442590A
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- rpc
- concrete
- stirrup
- reactive powder
- pipe
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0045—Composites
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Artificial Fish Reefs (AREA)
Abstract
The invention discloses a reactive powder concrete pipe column for ocean engineering. The reactive powder concrete pipe column comprises a reactive powder concrete casing pipe (1), a stirrup (2), a longitudinal bar (3) and a concrete column (4), wherein the stirrup (2) and the longitudinal bar (3) are arranged in the reactive powder concrete casing pipe (1). The reactive powder concrete pipe column is characterized in that the stirrup (2) is a closed fiber-reinforced plastic stirrup (2), the longitudinal bar (3) is a longitudinal fiber-reinforced plastic bar (3), and corrosion-resistant short fibers are mixed into the reactive powder concrete of the casing pipe (1); and the concrete column (4) is cast in the casing pipe (1) in situ and is made of concrete prepared by mixing seawater and sea sand. The reactive powder concrete pipe column has the characteristics of excellent ocean environment corrosion resistance, prefabrication construction, high axial bearing capacity, utilization of on-site materials such as seawater and sea sand, good economical efficiency and the like, is a novel structural column capable of meeting the construction requirements of ocean engineering and particularly ocean island engineering and can also replace a steel pipe pile in ocean engineering.
Description
Technical field
The present invention is mainly concerned with ocean engineering in civil engineering and building structure field, refers in particular to a kind of prefabricated RPC tubing string used in ocean engineering.
Background technology
Ocean has abundant natural resource, the particularly energy and mineral resources, and meanwhile, ocean is also for the mankind provide resistance to the space environment of existence.The ocean area of China's administration is very broad, and this marine nature resources that is wherein richly stored with, the exploitation of marine resources is the emerging fields with its own strategic significance, and therefore, 21 century is also referred to as " numerical ocean model ".In the territorial waters that China is wide, have many oceans islands and reefs, they are away from continent, and natural environment is severe, and scarcity of resources, traffic is very inconvenient.But, for ocean islands and reefs development & construction but tool be of great significance, being the forward position of safeguarding China's maritime rights and interests and territorial security, is the important embodiment that China safeguards sea area working control ability, be also exploitation marine resources important base.Ocean islands and reefs engineering is the challenging field of most in civil engineering, structure is in the marine environment of high temperature, high humidity, high salt fog, high radiation, be corrode very seriously, principal character comprises: 1. in seawater, the content of NaCl is about 3%, is the concentration the fastest to structure erosion speed; 2. the corrosion of component being in Lang Jian district is the most serious; 3. the salinity in naval air environment is high, is one of region the most serious in all kinds of atmosphere environment corrosion; 4. the biology in seawater to concrete and corrosion of metal also very serious.In ocean engineering is built, the most topmost form of structure is reinforced concrete structure, also can use steel pipe pile in some sea-crossing engineering.Available data shows, ocean islands and reefs engineering structures is under the combined factors effects such as solar radiation, the temperature difference, seawater erosion, salt fog and bioerosion, concrete component just occurs that cracking peels off, corrosion of steel bar exposes for about 3 years, and hardware only just there will be heavy corrosion in about 1 year.Therefore, under marine environment, the decay resistance particular importance of structure, general needs takes necessary anti-corrosion measure.No matter be concrete structure or metal construction, usually adopt anticorrosive paint to carry out surface spraying.And for concrete structure, the etching problem caused due to corrosion of steel bar is outstanding especially, improving concrete density and impermeability by the means such as to mix of raw-material selection, Admixture, and carry out coating processing to reinforcing bar, is also conventional technological means.But the anti-corrosion measure of existing ocean structure has defect clearly:
First, the application life of surface anticorrosion coating is limited, and need regularly to repair, later maintenance cost is high, considers the Special geographical position of ocean islands and reefs, and this maintenance cost can rise at double.In addition, for cast-in-place concrete structure, because the chlorion in seawater, extra large sand produces heavy corrosion to reinforcing bar, must use river sand, fresh water mixing concrete, a large amount of raw-material transport is very inconvenience for the islands and reefs engineering of ocean, costly.
In sum, adopt the high performance concrete of excellent anti-corrosion performance, improve the prefabricated degree of structure, and consider to gather materials on the spot mixing concrete, for ocean engineering, particularly ocean islands and reefs engineering construction, has meaning great especially.
RPC (being called for short RPC) is a kind of novel concrete based composites with superelevation compressive strength, high-durability and high tenacity, it has two outstanding features, first, there is the intensity of superelevation, without the need to specially treated, compressive strength can reach 200MPa, and flexural strength can reach 30 ~ 60MPa, effectively overcome the high fragility of high performance concrete, performance is remarkable; The second, have outstanding corrosion resistance, RPC hole is little, and porosity is extremely low, there are some researches show, RPC resists the ability of seawater corrosion far away higher than ordinary concrete and high performance concrete.In addition, in production technology, because RPC is mixed with active material in a large number, the high activity of these materials must under certain curing temperature could fast, give full play to, RPC component generally needs to carry out thermal curing after shaping.Therefore, under existence conditions, RPC in the application of field of civil engineering in the mode of prefabricated units.
Based on above feature, prefabricated RPC structure meets ocean engineering, particularly the technical requirements of ocean islands and reefs engineering, has good application scenario.
Patent CN201120058871 discloses a kind of casing reinforced concrete column, it is characterized in that the sleeve pipe of reinforced concrete post is prefabricated RPC sleeve pipe, it is characterized in that RPC inside pipe casing is configured with longitudinal reinforcement and stirrup.Coupled column is formed with inner reinforced concrete post by adopting prefabricated RPC sleeve pipe.In work progress, RPC sleeve pipe is the template of inner concrete, is also a part for construction support system; After construction completes, sleeve pipe and inner concrete shared axial load, before RPC sleeve pipe cracking, sleeve pipe provides horizontal restrain, shaping confined concrete with for core space concrete.This invention is compared with steel core concrete column, and RPC casing string has self performance, and as easy construction, cost is low, axial bearing capacity is high, anti-seismic performance is good, fire resistance is outstanding, excellent durability etc.In some key technologies, (as higher in cost, fire resistance not enough in endurance quality etc.) compensate for the defect of existing steel core concrete column, give full play to the material property of RPC simultaneously, and overcome the higher problem of its cost from performance/cost efficiency aspect.
The experimental study of applicant shows, RPC casing string has excellent mechanical property, even if after sleeve pipe cracking, as long as fracture does not appear in stirrup, sleeve pipe can provide effective constraint for internal core district concrete, thus greatly improves bearing capacity and the continuity of coupled column.But adopt this RPC casing string to be directly used in ocean engineering construction, following technological deficiency is there is: first in corrosion resistance, at present, the ordinary steel fiber mixed in RPC or copper plated steel fiber are not highly resistant to the corrosion of marine environment, the corrosion of steel fibre not only affects the outward appearance of component, and the passage making Korrosionsmedium be formed along steel fibre is corroded to component inside by component surface, RPC component is caused to be damaged by corrosion; The second, the chloride ion permeability in marine environment is strong, once chlorine ion binding capacity is to the rebar surface in sleeve pipe, reinforcing bar will get rusty, and then causes sleeve pipe cracking destruction; Reinforced concrete post cast-in-place in three, RPC sleeve pipe, can not use seawater and extra large sand as raw material, does not meet the requirement of gathering materials on the spot.
Therefore, proposing a kind of prefabricated RPC tubing string of novel corrosion resistant, is solve RPC structure to be applied to ocean engineering, the key of particularly ocean islands and reefs engineering construction.
Summary of the invention
The object of the present invention is to provide a kind of ocean engineering RPC tubing string, there is the excellent performance of resistance to marine environment, can adopt prefabricated construction, axial bearing capacity high, the features such as the on-the-spot material such as seawater and extra large sand, good economy performance can be utilized, ocean engineering can be met, the particularly new structure post of ocean islands and reefs engineering construction needs, the steel pipe pile also in alternative ocean engineering.
Solution of the present invention is a kind of RPC cover pipe concrete column, comprise RPC sleeve pipe, stirrup, vertical muscle, concrete column, stirrup, vertical muscle are arranged in RPC sleeve pipe, it is characterized in that stirrup, vertical muscle is respectively closed fibre reinforced plastics stirrup and muscle indulged by fibre reinforced plastics, and be mixed with corrosion resistant short fiber in the RPC of sleeve pipe; Cast-in-situ concrete columns in sleeve pipe, material is the concrete of seawater and extra large sand mixing.
Compared with prior art, advantage of the present invention is just:
1. RPC cover pipe concrete column has excellent corrosion resistance.In the raw material of RPC sleeve pipe, mix stainless steel fibre and synthetic fibers replacement ordinary steel fiber, effectively prevent short fiber material itself by the problem of marine environment.Fibre reinforced plastics (FRP) muscle material is adopted to make closed stirrup and vertical muscle replacement reinforcing bar, because the problem of getting rusty do not deposited by FRP material itself, even if thus there is the situation of chloride permeability, the problem that the corrosion of muscle material causes prefabricated pipe to ftracture also can not be produced, excellent anti-corrosion performance.In addition, itself be ultra-high performance concrete, permeability is extremely low, good corrosion resistance.Therefore, the present invention has very outstanding decay resistance in marine environment.
2. RPC cover pipe concrete column directly can use the concrete of seawater and extra large sand mixing.In the present invention, be furnished with FRP closed stirrup in prefabricated RPC sleeve pipe, have horizontal restrain effect to inner cast-in-situ concrete, can significantly improve the compressive strength of inner concrete, both define coupled column.Due to periphery prefabricated RPC sleeve pipe corrosion resistance and good, configuration reinforcement is not had yet, therefore, inner cast-in-situ concrete columns can adopt the on-the-spot material on the islands and reefs of the ocean such as seawater and extra large sand to carry out mixing, can not have an impact to the endurance quality of coupled column, can greatly reducing the construction costs and maintenance cost.Certainly, cast-in-situ concrete columns also can according to design needs, and configuration FRP stirrup and FRP indulge muscle, FRP tubing or FRP section bar etc.
3. RPC sleeve pipe can substitute steel pipe pile.By the RPC sleeve pipe of the prefabricated fixed length of designing requirement, without the need in inner cast-in-situ concrete, directly can replace steel pipe pile.Compared with steel pipe pile, form of construction work and existing steel pipe pile similar, without the need to regular surface spraying anticorrosive coat, durability improves greatly, and maintenance cost significantly reduces.
Accompanying drawing explanation
Fig. 1 is RPC cover pipe concrete column;
Fig. 2 is RPC cover pipe concrete column.
Marginal data
1 is RPC sleeve pipe 2 is the fibre reinforced plastics stirrup closed
3 indulge muscle 4 for cast-in-situ concrete columns for fibre reinforced plastics
Detailed description of the invention
The present invention as shown in drawings, a kind of RPC cover pipe concrete column, comprise RPC sleeve pipe (1), stirrup (2), vertical muscle (3), concrete column (4), stirrup (2), vertical muscle (3) is arranged in RPC sleeve pipe (1), it is characterized in that stirrup (2), vertical muscle (3) is respectively closed fibre reinforced plastics stirrup (2) and muscle (3) indulged by fibre reinforced plastics, and in the RPC of sleeve pipe (1), be mixed with corrosion resistant short fiber, as depicted in figs. 1 and 2.During enforcement, first, according to designing requirement, the fibre reinforced plastics stirrup (2) closed and fibre reinforced plastics are indulged muscle (3) and are made FRP muscle cage, and be placed on make prefabricated RPC sleeve pipe (1) mould in; Adopt stainless steel fibre and synthetic fibers mixing RPC, and be cast in mould, adopt centrifugal process to produce; Prefabricated RPC sleeve pipe (1) form removal after shaping, the maintenance in hot water or steam 48 hours; Prefabricated RPC sleeve pipe (1) is transported to job site, hoisted in position, or adopts the method for hammering to locate in the seawater; Finally adopt seawater and the on-the-spot mixing concrete of extra large sand, cast-in-situ concrete columns (4) in prefabricated RPC sleeve pipe (1), completes the construction of ocean engineering RPC tubing string.
Claims (5)
1. a RPC cover pipe concrete column, comprise RPC sleeve pipe (1), stirrup (2), vertical muscle (3), concrete column (4), stirrup (2), vertical muscle (3) are arranged in RPC sleeve pipe (1), it is characterized in that stirrup (2), vertical muscle (3) is respectively closed fibre reinforced plastics stirrup (2) and muscle (3) indulged by fibre reinforced plastics, and in the RPC of sleeve pipe (1), be mixed with corrosion resistant short fiber.
2. a kind of RPC cover pipe concrete column according to claim 1, is characterized in that the described fibre reinforced plastics stirrup (2) closed and fibre reinforced plastics indulge that muscle (3) is carbon fibre reinforced plastic (CFRP) muscle material, glass fiber reinforced plastics (GFRP) muscle material, aromatic polyamide fiber reinforced plastics (AFRP) muscle material, Basalt fiber reinforced plastic (BFRP) muscle material or hybrid fiber reinforced plastics (HFRP) muscle material.
3. a kind of RPC cover pipe concrete column according to claim 1, is characterized in that described corrosion-resistant short fiber is synthetic fibers, stainless steel fibre, or both assorted fibres.
4. a kind of RPC cover pipe concrete column according to claim 1, is characterized in that being cast-in-situ concrete columns (4) in described prefabricated RPC pipe (1).
5. a kind of RPC cover pipe concrete column according to claim 4, is characterized in that the concrete of described cast-in-situ concrete columns (4) is the concrete of seawater and extra large sand mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993118.3A CN105442590A (en) | 2015-12-28 | 2015-12-28 | Reactive powder concrete pipe column for ocean engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510993118.3A CN105442590A (en) | 2015-12-28 | 2015-12-28 | Reactive powder concrete pipe column for ocean engineering |
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| CN105442590A true CN105442590A (en) | 2016-03-30 |
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| CN201510993118.3A Pending CN105442590A (en) | 2015-12-28 | 2015-12-28 | Reactive powder concrete pipe column for ocean engineering |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013611A (en) * | 2016-07-05 | 2016-10-12 | 湖南大学 | Ocean engineering composite column |
| CN106193285A (en) * | 2016-06-22 | 2016-12-07 | 温州大学 | A kind of sea sand renewable hybrid concrete component |
| CN106760212A (en) * | 2017-01-17 | 2017-05-31 | 南京林业大学 | A kind of ripple multiple tube seawater marine sand concrete structure |
| CN106759293A (en) * | 2017-01-09 | 2017-05-31 | 福州大学 | The bored concrete pile and its making construction method of a kind of use ultra-high performance concrete casing |
| CN107503470A (en) * | 2017-05-26 | 2017-12-22 | 广东工业大学 | A kind of pre-stress FRP sleeve FRP tendons sea sand seawater expansive concrete coupled column |
| CN110924424A (en) * | 2019-10-29 | 2020-03-27 | 国家电网有限公司 | UHPC-NC combined pile foundation for power transmission tower in saline-alkali area and construction method |
| CN112695953A (en) * | 2020-12-18 | 2021-04-23 | 武汉大学 | Fiber reinforced material and ultra-high performance concrete pipe filled common concrete combined column and production method thereof |
| CN114477921A (en) * | 2022-03-21 | 2022-05-13 | 南京交通职业技术学院 | Corrosion-resistant ocean underwater concrete column and preparation method thereof |
| CN115522686A (en) * | 2022-10-11 | 2022-12-27 | 暨南大学 | FRP anti-sliding composite pipe confined seawater sea sand concrete column and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002013248A (en) * | 2000-06-30 | 2002-01-18 | Ando Corp | Concrete column with built-in continuous fiber reinforced pipe |
| CN102102423A (en) * | 2011-03-09 | 2011-06-22 | 湖南大学 | Sleeve reinforced concrete column |
| CN102776985A (en) * | 2012-07-13 | 2012-11-14 | 湖南大学 | Composite casing pipe restrained reinforced concrete column |
| CN104018620A (en) * | 2014-05-04 | 2014-09-03 | 广东工业大学 | Sea sand concrete bending member |
| CN104895240A (en) * | 2015-05-22 | 2015-09-09 | 程华 | Island engineering construction structure technology taking seawater and nonmetallic materials as main materials |
-
2015
- 2015-12-28 CN CN201510993118.3A patent/CN105442590A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002013248A (en) * | 2000-06-30 | 2002-01-18 | Ando Corp | Concrete column with built-in continuous fiber reinforced pipe |
| CN102102423A (en) * | 2011-03-09 | 2011-06-22 | 湖南大学 | Sleeve reinforced concrete column |
| CN102776985A (en) * | 2012-07-13 | 2012-11-14 | 湖南大学 | Composite casing pipe restrained reinforced concrete column |
| CN104018620A (en) * | 2014-05-04 | 2014-09-03 | 广东工业大学 | Sea sand concrete bending member |
| CN104895240A (en) * | 2015-05-22 | 2015-09-09 | 程华 | Island engineering construction structure technology taking seawater and nonmetallic materials as main materials |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193285A (en) * | 2016-06-22 | 2016-12-07 | 温州大学 | A kind of sea sand renewable hybrid concrete component |
| CN106013611A (en) * | 2016-07-05 | 2016-10-12 | 湖南大学 | Ocean engineering composite column |
| CN106759293A (en) * | 2017-01-09 | 2017-05-31 | 福州大学 | The bored concrete pile and its making construction method of a kind of use ultra-high performance concrete casing |
| CN106760212A (en) * | 2017-01-17 | 2017-05-31 | 南京林业大学 | A kind of ripple multiple tube seawater marine sand concrete structure |
| CN107503470A (en) * | 2017-05-26 | 2017-12-22 | 广东工业大学 | A kind of pre-stress FRP sleeve FRP tendons sea sand seawater expansive concrete coupled column |
| CN110924424A (en) * | 2019-10-29 | 2020-03-27 | 国家电网有限公司 | UHPC-NC combined pile foundation for power transmission tower in saline-alkali area and construction method |
| CN112695953A (en) * | 2020-12-18 | 2021-04-23 | 武汉大学 | Fiber reinforced material and ultra-high performance concrete pipe filled common concrete combined column and production method thereof |
| CN114477921A (en) * | 2022-03-21 | 2022-05-13 | 南京交通职业技术学院 | Corrosion-resistant ocean underwater concrete column and preparation method thereof |
| CN114477921B (en) * | 2022-03-21 | 2023-01-24 | 南京交通职业技术学院 | Corrosion-resistant ocean underwater concrete column and preparation method thereof |
| CN115522686A (en) * | 2022-10-11 | 2022-12-27 | 暨南大学 | FRP anti-sliding composite pipe confined seawater sea sand concrete column and construction method |
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Application publication date: 20160330 |