CN101666102B - Movable prefabricated barrel-type gravity mixed foundation - Google Patents

Movable prefabricated barrel-type gravity mixed foundation Download PDF

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Publication number
CN101666102B
CN101666102B CN2009103079086A CN200910307908A CN101666102B CN 101666102 B CN101666102 B CN 101666102B CN 2009103079086 A CN2009103079086 A CN 2009103079086A CN 200910307908 A CN200910307908 A CN 200910307908A CN 101666102 B CN101666102 B CN 101666102B
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foundation
barrel
type
cover
steel
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CN101666102A (en
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丁红岩
张浦阳
练继建
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JlANGSU DAODA OFFSHORE WIND CONSTRUCTION TECHNOLOGY Co.,Ltd.
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JIANGSU DAODA OFFSHORE WIND POWER ENGINEERING TECHNOLOGY Co Ltd
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Abstract

The invention discloses a movable prefabricated barrel-type gravity mixed foundation, comprising a barrel-type foundation, wherein a foundation bearing platform is fixedly connected at the center on a barrel cover of the barrel-type foundation; an upper barrel-type structure with an upward opening is coaxially and fixedly connected on the barrel cover of the barrel-type foundation; the inner part of the upper barrel-type structure is divided into a plurality of storehouses by reinforced rib plates between the barrel wall and the foundation bearing platform; the inner part of the barrel-type foundation is divided into a plurality of storehouses by reinforced rib plates arranged below the barrel cover thereof; each storehouse of the barrel-type foundation is provided with an openable and closable reserved through hole on the barrel cover of the barrel-type foundation; and each storehouse of the upper barrel-type structure is filled with heavy objects. The movable prefabricated barrel-type gravity mixed foundation does not need large transport ships when in transportation, and site installation does not need large hoisting ships; the positioning and sinking equipment is simple, the construction is simple and convenient, the sinking speed is fast, the skewness is easily controlled, the vacuum pre-pressing and heavy objects filling have significant pre-pressing effect to foundation consolidation and the comprehensive engineering cost is low.

Description

Movable prefabricated barrel-type gravity mixed foundation
Technical field
The present invention relates to the basis in a kind of harbour, ocean, water conservancy and the bridge engineering, particularly a kind of movable prefabricated barrel-type gravity mixed foundation.
Background technology
At present at the harbour, ocean, water conservancy and bridge engineering, the basis on the soft foundation is main with pile foundation, needs construction equipment complicated, expense is high, and natural conditions are had relatively high expectations.When environmental loads such as stormy waves stream were complicated, particularly the big marine site of river course, river mouth and trend was very high to displacement, the positioning requirements of pile driving equipment, and piling efficient is also lower.Simultaneously, on mud soft soil foundation, the projected depth of stake will increase, and expense also improves immediately.
Summary of the invention
The present invention provides a kind of movable prefabricated barrel-type gravity mixed foundation that is applicable on the soft foundation for solving the technical problem that exists in the known technology; This mixing has the high superiority of good endurance, bearing capacity of traditional pile foundation; Have simultaneously easy construction, the characteristics that construction costs is relatively low again.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of movable prefabricated barrel-type gravity mixed foundation; Comprise bucket foundation; The center is connected with foundation platform above the cover of said bucket foundation; Coaxially above the cover of said bucket foundation be connected with the top cylindrical structure that opening makes progress, the inside of said top cylindrical structure is divided into a plurality of bins through the deep floor that is arranged between its barrel and the said foundation platform; The deep floor that the inside of said bucket foundation is provided with below its cover is divided into a plurality of bins; But each bin of said bucket foundation all is provided with the reservation through hole of switch on the cover of bucket foundation, all be filled with weight in each bin of said top cylindrical structure.
Said bucket foundation is steel work or concrete structure or steel-concrete structure; The cover of said steel bucket foundation is steel work or concrete structure or steel-concrete structure; Steel work or concrete structure or steel-concrete structure that said top cylindrical structure fuses for the cover with said bucket foundation, steel work or concrete structure or steel-concrete structure that said foundation platform fuses for the cover with said bucket foundation.
Advantage and good effect that the present invention has are: be suitable on soft foundation the basis as structure; Transportation does not need the large transport ship oceangoing ship, and on-the-spot the installation do not need large-scale lifting boats and ships, this mixing to have the high superiority of good endurance, bearing capacity of traditional pile foundation; Simultaneously, positioning sinking equipment is simple, easy construction; Subsidence velocity is fast; Degree of skewness is controlled easily, and vacuum preloading and weight backfill are remarkably productive to the precompressed of ground stabilization, and the integration engineering cost is low.
Description of drawings
Fig. 1 is a section structure sketch map of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 final vacuum precompressed sketch map that is in place for the present invention sinks;
Fig. 5 be in place for the present invention sinks final vacuum precompressed and the sketch map of filling weight.
Among the figure: 1, bucket foundation, 2, the top cylindrical structure, 3, reserve through hole, 4, deep floor, 5, deep floor, 6, cover, 7, foundation platform, 8, water and/or gas, 9, weight.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1～Fig. 5; A kind of movable prefabricated barrel-type gravity mixed foundation of the present invention; But comprise bucket foundation 1 that air supporting and negative pressure are sunk and connect into integral upper foundation platform 7 with it; Through deep floor 5 is set the inside of bucket foundation 1 is divided into a plurality of bins the cover of bucket foundation 16 times; But each bin all is provided with the reservation through hole 3 of switch, reserves through hole 3 and is arranged on the cover 6, and top foundation platform 7 is positioned at the center of the cover 6 of bucket foundation 1; Coaxially on the cover 6 of bucket foundation 1 be connected with the top cylindrical structure 2 that opening makes progress, through deep floor 4 is set cylindrical structure 2 inside in top be divided into a plurality of bins between top cylindrical structure 2 and the foundation platform 7.This mixed base transportation by driving carries out negative pressure through reserving through hole behind the precalculated position, sink to projected depth after; Continue to extract out water and/or the gas 8 in the bucket foundation 1; Carry out vacuum preloading, strengthen the reinforcement depth of soft foundation, carry out the filling work of the silt stone weight 9 of top each bin of cylindrical structure simultaneously; Further strengthen the overconsolidation process of ground, thereby improve the bearing capacity of foundation soil.
In the present embodiment, the air supporting bucket foundation is diameter 25m, high 1.5m, the steel drum of wall thickness 25mm; The cover of air supporting bucket foundation is the steel-concrete mixed material plectane of diameter 25m, the thick 25mm of its light plate, and concrete thickness of slab 500mm has concrete top cylindrical structure with its formed by integrally casting on the cover that above-mentioned steel-concrete mixed material is processed; The diameter 25m of top cylindrical structure, height 2.5m, wall thickness 500mm, the floor in the mixed material cover therapeutic method to keep the adverse qi flowing downward float-plane version basis are steel; Its thickness 50mm, height 1.5m, 60 ° of angles; Foundation platform diameter 8m on the cover, height 2.5m, the barrel of top cylindrical structure and the deep floor between the foundation platform are concrete structure; Its thickness 1m, height 2m, 60 ° of angles.1533 tons of this mixed base structure gross weights, wherein steel are 162.51 tons, 1370.49 tons of concrete, the about deeply 1-2m of the high-tide level of infield.
This mixed base structure adopts slideway or diving barge that it is moved in water after the land is prefabricated.Before the water, all connect inflation and outlet valve and pipeline under the structure, on each reservation through hole, respectively install one and draw water/air pump in the reservation through hole of each bin of steel bucket foundation.
After this mixed base sinks to being in place; The drawing water of each bin of steel bucket foundation/air pump works on, and carries out the vacuum preloading of ground, consolidated subsoil; In order to guarantee the effect of vacuum preloading; Can under the cover of each bin of steel bucket foundation, lay the geotextiles of different-thickness according to different foundation conditions, guarantee the uniformity of vacuum preloading, as shown in Figure 4.Meanwhile, weight such as filling silt stone is accomplished the precompressed work of this mixed base in each bin of top concrete cylindrical structure, and is as shown in Figure 5.
It can also be concrete structure or steel-concrete structure that above-mentioned bucket foundation is not limited to steel work.Top cylindrical structure above the bucket foundation is not limited to concrete structure, can also be concrete structure or steel-concrete structure.The rest may be inferred for cover, deep floor and foundation platform.
The present invention is because it can be from floating holder boat, and transportation does not need the large transport ship oceangoing ship, and on-the-spot the installation do not need large-scale lifting boats and ships, and haul and positioning equipment are simple, and construction is simple, and subsidence velocity is fast, and degree of skewness is controlled easily, and the integrated construction expense is low.It adopts vacuum and weight backfill precompressed technology simultaneously, has further guaranteed stability of the present invention and safety.Complicated and the disadvantageous zone of geological conditions at environmental load; The basis needs efficient form of construction work of saving money and good supporting capacity; The invention solves the problems referred to above; Remedied the deficiency of traditional pile foundation, be a kind of that movably, process by steel and concrete material, be that basis, top are the mixed base structure of concrete bearing platform structure with the cylindrical structure.
Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.

Claims (2)

1. movable prefabricated barrel-type gravity mixed foundation; It is characterized in that; Comprise bucket foundation; The center is connected with foundation platform above the cover of said bucket foundation, coaxially above the cover of said bucket foundation is connected with the top cylindrical structure that opening makes progress, and the inside of said top cylindrical structure is divided into a plurality of bins through the deep floor that is arranged between its barrel and the said foundation platform; The deep floor that the inside of said bucket foundation is provided with below its cover is divided into a plurality of bins; But each bin of said bucket foundation all is provided with the reservation through hole of switch on the cover of bucket foundation, all be filled with weight in each bin of said top cylindrical structure.
2. according to the described movable prefabricated barrel-type gravity mixed foundation of claim 1; It is characterized in that; Said bucket foundation is steel work or concrete structure or steel-concrete structure; The cover of steel bucket foundation is steel work or concrete structure or steel-concrete structure; Steel work or concrete structure or steel-concrete structure that said top cylindrical structure fuses for the cover with said bucket foundation, steel work or concrete structure or steel-concrete structure that said foundation platform fuses for the cover with said bucket foundation.
CN2009103079086A 2009-09-29 2009-09-29 Movable prefabricated barrel-type gravity mixed foundation Active CN101666102B (en)

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CN101666102B true CN101666102B (en) 2012-02-15

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838996A (en) * 2010-05-17 2010-09-22 中国海洋石油总公司 Sea gravity type pile foundation combined fan foundation
ES2617991B1 (en) * 2017-02-14 2018-03-27 Berenguer Ingenieros S.L. MARITIME STRUCTURE FOR THE FOUNDATION BY GRAVITY OF BUILDINGS, FACILITIES AND AEROGENERATORS IN THE MARINE ENVIRONMENT

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