CN105525601A - Ultra-high performance concrete engineering structure used for ocean reef islanding construction and construction process of structure - Google Patents
Ultra-high performance concrete engineering structure used for ocean reef islanding construction and construction process of structure Download PDFInfo
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- CN105525601A CN105525601A CN201510097642.2A CN201510097642A CN105525601A CN 105525601 A CN105525601 A CN 105525601A CN 201510097642 A CN201510097642 A CN 201510097642A CN 105525601 A CN105525601 A CN 105525601A
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Abstract
The invention relates to an ultra-high performance concrete engineering structure used for ocean reef islanding construction and a construction process of the structure. The construction process can be used for the ultra-high performance concrete engineering structure for ocean reef islanding construction, and the ultra-high performance concrete engineering structure comprises a plurality of precast concrete piles inserted into an ocean reef site and a concrete platform arranged on the precast piles. The ultra-high performance concrete engineering structure used for ocean reef islanding construction and the construction process of the structure can lower the construction cost of ocean reef islanding and improve the construction efficiency of ocean reef islanding.
Description
technical field:
The present invention relates to technical field of civil, is a kind of ultra-high performance concrete engineering structures and construction technology of can be used for the island construction of Hai Jiao one-tenth.
background technology:
Man-made island, as the important means of human use's marine resources, interiorly plays huge benefit multi-field, and it can be used as industrial production land used, communications and transportation place, storage place, offal treatment field etc.The man-made island engineering of current Hai Jiao dish mainly adopts the technology of blowing sand, and is blown into by sea sand in lagoon, and the engineering quantity on this Tian Haizao island is very large, and difficulty of construction is comparatively large, and construction period is longer, and construction costs is also very expensive.
summary of the invention:
The object of the present invention is to provide a kind of the ultra-high performance concrete engineering structures and the construction technology that can be used for the island construction of Hai Jiao one-tenth, this can be used for Hai Jiao and becomes the ultra-high performance concrete engineering structures of island construction and construction technology can reduce the construction cost on Hai Jiao one-tenth island, improves the efficiency of construction that Hai Jiao becomes island.
The present invention is achieved through the following technical solutions:
The present invention can be used for the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build, and it is characterized in that: comprise the multiple precast concrete pile inserted in Hai Jiao dish and the concrete platform be located on preformed pile.
Further, above-mentioned concrete pile is that ultra-high performance concrete is made.
Further, above-mentioned concrete platform is made up of thin-wall barrel and the filler be located in thin-wall barrel, and described thin-wall barrel is made up of ultra-high performance concrete, and filler is concrete.
Further, above-mentioned concrete pile lower end is provided with ultra-high performance concrete pile crown.
Further, the cross section of above-mentioned concrete pile pile body is circle, rectangle, square, annular or I shape, and pile crown is solid conical structure.
The present invention can be used for the construction technology of the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build, and it is characterized in that: it carries out according to the following steps:
(1) prefabricated ultra-high performance concrete stake on land, by being transported near Hai Jiao dish, utilizes offshore platform to squeeze in Hai Jiao dish by ultra-high performance concrete stake;
(2) after treating ultra-high performance concrete pile driving construction, a ultra-high performance concrete thin-wall barrel of constructing in the above;
(3) fill ordinary concrete at ultra-high performance concrete thin-wall barrel, make both form entirety jointly stressed;
(4) finally on its platform, the corresponding facility of man-made island is built.
Further, the cross section of above-mentioned concrete pile pile body is circle, rectangle, square, annular or I shape, and pile crown is solid conical structure.
Ultra-high performance concrete of the present invention studies the New Style Concrete Materials of strong, the low fragility of successful a kind of superelevation, excellent in te pins of durability after being continuous high strength, high performance concrete.Compare with ordinary concrete, ultra-high performance concrete has high resistance to compression and rupture strength, the impermeability of superelevation and good abrasion resistance, preferably ductility and higher tensile strength, makes it have broad application prospects in the engineerings such as municipal administration, oil, nuclear power, ocean and military installations.
The superelevation epistasis of ultra-high performance concrete can decrease the engineering quantity of man-made island and reduce difficulty of construction, the endurance quality utilizing it superior has resisted the erosion of seawater chlorion and sulfate, improve the useful life of man-made island, reduce overall life cycle cost, to promoting that Hai Jiao becomes the construction on island to have great importance.
In addition, the present invention utilizes the superelevation compressive property of ultra-high performance concrete stake to reduce the sectional dimension of pile foundation and reduce its difficulty of construction and provide efficiency of construction; Utilize the low porosity characteristic of ultra-high performance concrete stake and platform to improve the corrosion resistance of man-made island, extend the application life of man-made island.New structure of the present invention and construction method can be widely used in Hai Jiao and become in the engineering construction on island, have good mechanical property and economic benefit.
accompanying drawing illustrates:
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the organigram of pile crown;
In figure: 1 is ultra-high performance concrete pile crown, 2 is ultra-high performance concrete pile body, and 3 is ultra-high performance concrete platform, and 4 is ordinary concrete structure, and 5 is Hai Jiao, and 6 is sea level.
detailed description of the invention:
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing, be described in detail below.
The present invention can be used for the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build, and comprises the multiple precast concrete pile inserted in Hai Jiao dish and the concrete platform be located on preformed pile.
Further, in order to gain in strength, above-mentioned concrete pile is that ultra-high performance concrete is made.
Further, in order to reasonable in design, above-mentioned concrete platform is made up of thin-wall barrel and the filler be located in thin-wall barrel, and described thin-wall barrel is made up of ultra-high performance concrete, and filler is concrete.
Further, above-mentioned concrete pile lower end is provided with ultra-high performance concrete pile crown 1.
Further, the cross section of above-mentioned concrete pile pile body is circle, rectangle, square, annular or I shape etc., and pile crown is solid conical structure.
The present invention can be used for the construction technology of the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build, and it is characterized in that: it carries out according to the following steps:
(1) prefabricated ultra-high performance concrete stake on land, by being transported near Hai Jiao dish, utilizes offshore platform to squeeze in Hai Jiao dish by ultra-high performance concrete stake;
(2) after treating ultra-high performance concrete pile driving construction, a ultra-high performance concrete thin-wall barrel of constructing in the above;
(3) fill ordinary concrete at ultra-high performance concrete thin-wall barrel, make both form entirety jointly stressed;
(4) finally on its platform, the corresponding facility of man-made island is built.
Further, the cross section of above-mentioned concrete pile pile body is circle, rectangle, square, annular or I shape, and pile crown is solid conical structure.
Insert reef dish to be conducive to pile top, can be covered with clad 7 outside pile top, clad also forms cone-shaped, and clad forms the bevel angle of 56 degree; Also can be provided with some fins 8 at conical surface, fin 8 is in fact a triangular, and an Atria angle is respectively 6 degree, 84 degree, 90 degree, and wherein 6 degree are positioned at the bevel angle side of pile top 56 degree, in order to entering stake.
Above-mentioned ultra-high performance concrete, is called for short UHPC (Ultra-HighPerformanceConcrete), also referred to as RPC (RPC, ReactivePowderConcrete)
" ultra-high performance concrete " comprises two aspects ' superelevation '---the durability of superelevation and the mechanical property (referring to the performance comparison of table 1-ordinary concrete, high performance concrete and ultra-high performance concrete) of superelevation: table 1: ordinary concrete, high performance concrete and ultra-high performance concrete (RPC) material property contrast
the design theory of ultra-high performance concrete is maximum bulk density theory (densifiedparticlepacking), its composition material different-grain diameter particle forms closestpacking with optimal proportion, namely the gap that grade particle (aggregate) is piled up is filled by micron particles (cement, flyash, breeze), and the gap that micron particles is piled up is filled by submicron particles (silicon ash).As far back as 1931, Andressen just established the Mathematical Modeling of maximum bulk density theory.But, until last century late nineteen seventies, on the basis that high efficiency water reducing agent technology and properties of product increase substantially, the first generation ultra-high performance concrete adopting this modelling to prepare just is born at Denmark Alborg CementogBetonLaboratiet (cement and concrete test room), be called CRC (CompactReinforcedComposite, closely knit reinforced composite).CRC reaches substantially identical mechanical property with current UHPC, and most high compressive strength, more than 400MPa, uses sintered bauxite to make aggregate, uses steel fibre to improve the toughness of material, so be called " composite material " simultaneously.Be subject to the restriction of high efficiency water reducing agent performance at that time, CRC or early stage UHPC compares viscous, and vibration compacting is more difficult, is also not easy to cast-in-place application.Last century the nineties, joint study project has been carried out in Europe, also extensively carries out correlative study all over the world, and this material obtains a newname " RPC, be called for short RPC ".The title of " ultra-high performance concrete UHPC " is formed at this century, because compared with early stage CRC or RPC, perfect, special superplasticizer (polycarboxylic-acid) along with design theory comes out and the progress of preparation technique, this material has possessed the workability of ordinary concrete, even self-compaction can be realized, can normal temperature maintenance, possess the condition of extensive use.The aspect that UHPC is different from ordinary concrete or high performance concrete comprises: do not use coarse aggregate, must use silicon ash and fiber (steel fibre or be compounded with organic fiber), and comparatively greatly, water-cement ratio is very low for cement consumption.The composition of UHPC is in table 2.Table 2: ultra-high performance concrete UHPC basic composition
UHPC can be rated as the best engineering material of durability, and the UHPC mechanical property of suitable arrangement of reinforcement is close to firm structure, and UHPC has excellent wear-resisting, the capability of antidetonance simultaneously.Therefore, UHPC is particularly suitable for Large Span Bridges, explosion resistant structure (military engineering, bank vault etc.) and thin wall construction, and is used in high abrasion, high corrosive environment.At present, UHPC applies in some Practical Projects, as Long span pedestrian overcrossing, road and rail bridge (example is in table 3), thin-walled silo, nuke rubbish tank, cable wire anchoring stiffener, ATM containment vessel, etc.Can estimate, also have increasing application.Table 3: French First UHPC highway bridge concrete composition and performance
As shown in Figure 1, ultra-high performance concrete stake comprises ultra-high performance concrete pile crown 1 and ultra-high performance concrete pile body 2, both all can carry out prefabricated on land, ultra-high performance concrete stake connects ultra-high performance concrete platform, platform is the combining structure that a thin-wall barrel 3+ filler 4 is formed, bottom surface and surrounding side all adopt ultra-high performance concrete material, adopt prefabricated or cast in situs form, inner barrel fills ordinary concrete, form overall structure, for supporting other facility gravity of man-made island.
The invention has the beneficial effects as follows: utilize the superelevation compressive property of ultra-high performance concrete stake to reduce the sectional dimension of pile foundation and reduce its difficulty of construction and provide efficiency of construction; Utilize the low porosity characteristic of ultra-high performance concrete stake and platform to improve the corrosion resistance of man-made island, extend the application life of man-made island.New structure of the present invention and construction method can be widely used in Hai Jiao and become in the engineering construction on island, have good mechanical property and economic benefit.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. can be used for the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build, it is characterized in that: comprise the multiple precast concrete pile inserted in Hai Jiao dish and the concrete platform be located on preformed pile.
2. the ultra-high performance concrete engineering structures that can be used for Hai Jiao and become island to build according to claim 1, is characterized in that: described concrete pile is that ultra-high performance concrete is made.
3. the ultra-high performance concrete engineering structures that can be used for Hai Jiao and become island to build according to claim 1, it is characterized in that: described concrete platform is made up of thin-wall barrel and the filler be located in thin-wall barrel, described thin-wall barrel is made up of ultra-high performance concrete, and filler is concrete.
4. the ultra-high performance concrete engineering structures that can be used for Hai Jiao and become island to build according to claim 1, is characterized in that: described concrete pile lower end is provided with ultra-high performance concrete pile crown.
5. the ultra-high performance concrete engineering structures that can be used for Hai Jiao and become island to build according to claim 4, it is characterized in that: the cross section of described concrete pile pile body is circle, rectangle, square, annular or I shape, pile crown is solid conical structure.
6. can be used for a construction technology for the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build, it is characterized in that: it carries out according to the following steps:
(1) prefabricated ultra-high performance concrete stake on land, by being transported near Hai Jiao dish, utilizes offshore platform to squeeze in Hai Jiao dish by ultra-high performance concrete stake;
(2) after treating ultra-high performance concrete pile driving construction, a ultra-high performance concrete thin-wall barrel of constructing in the above;
(3) fill ordinary concrete at ultra-high performance concrete thin-wall barrel, make both form entirety jointly stressed;
(4) finally on its platform, the corresponding facility of man-made island is built.
7. construction technology according to claim 6, is characterized in that: the cross section of described concrete pile pile body is circle, rectangle, square, annular or I shape, and pile crown is solid conical structure.
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| CN201510097642.2A CN105525601A (en) | 2015-03-05 | 2015-03-05 | Ultra-high performance concrete engineering structure used for ocean reef islanding construction and construction process of structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107386239A (en) * | 2017-07-18 | 2017-11-24 | 中铁隧道勘测设计院有限公司 | A kind of bridge-type man-made island |
| CN109281249A (en) * | 2018-11-16 | 2019-01-29 | 福州大学 | A kind of UHPC-NC overlapping trestle deck structrue and its construction method |
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| JP2011220059A (en) * | 2010-04-14 | 2011-11-04 | Kajima Corp | Construction method for marine structure |
| CN203145009U (en) * | 2013-02-07 | 2013-08-21 | 江苏东浦管桩有限公司 | Prestressing concrete pipe pile |
| CN103375043A (en) * | 2013-07-17 | 2013-10-30 | 上海交通大学 | Prestressed ultra-high-performance concrete offshore wind power tower |
| CN204112298U (en) * | 2014-08-15 | 2015-01-21 | 中交第二航务工程局有限公司 | Combined type artificial island, Diarrhea lake region |
| CN204491565U (en) * | 2015-03-05 | 2015-07-22 | 福州大学 | Can be used for the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build |
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2015
- 2015-03-05 CN CN201510097642.2A patent/CN105525601A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005163509A (en) * | 2003-11-28 | 2005-06-23 | Yasuo Futagawa | Pile head cap |
| JP2011220059A (en) * | 2010-04-14 | 2011-11-04 | Kajima Corp | Construction method for marine structure |
| CN203145009U (en) * | 2013-02-07 | 2013-08-21 | 江苏东浦管桩有限公司 | Prestressing concrete pipe pile |
| CN103375043A (en) * | 2013-07-17 | 2013-10-30 | 上海交通大学 | Prestressed ultra-high-performance concrete offshore wind power tower |
| CN204112298U (en) * | 2014-08-15 | 2015-01-21 | 中交第二航务工程局有限公司 | Combined type artificial island, Diarrhea lake region |
| CN204491565U (en) * | 2015-03-05 | 2015-07-22 | 福州大学 | Can be used for the ultra-high performance concrete engineering structures that Hai Jiao becomes island to build |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386239A (en) * | 2017-07-18 | 2017-11-24 | 中铁隧道勘测设计院有限公司 | A kind of bridge-type man-made island |
| CN109281249A (en) * | 2018-11-16 | 2019-01-29 | 福州大学 | A kind of UHPC-NC overlapping trestle deck structrue and its construction method |
| CN109281249B (en) * | 2018-11-16 | 2023-12-12 | 福州大学 | UHPC-NC superposed trestle bridge deck structure and construction method thereof |
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