CN106759442A - A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure and its construction method - Google Patents

A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure and its construction method Download PDF

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Publication number
CN106759442A
CN106759442A CN201710007632.4A CN201710007632A CN106759442A CN 106759442 A CN106759442 A CN 106759442A CN 201710007632 A CN201710007632 A CN 201710007632A CN 106759442 A CN106759442 A CN 106759442A
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CN
China
Prior art keywords
pile
reinforced concrete
tower
anchor cable
concrete pile
Prior art date
Application number
CN201710007632.4A
Other languages
Chinese (zh)
Inventor
王其洋
毛江峰
吴敏
高荣荣
何朝
潘志乾
Original Assignee
中建三局第二建设工程有限责任公司
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Application filed by 中建三局第二建设工程有限责任公司 filed Critical 中建三局第二建设工程有限责任公司
Priority to CN201710007632.4A priority Critical patent/CN106759442A/en
Publication of CN106759442A publication Critical patent/CN106759442A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/14Pile framings, i.e. piles assembled to form the substructure
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/44Foundations for machines, engines or ordnance
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same

Abstract

The invention discloses a kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure, deposited reinforced concrete pile is arranged on below excavation face, in described deposited reinforced concrete pile upper end anchoring and reinforced concrete pile cap;Pre-buried tower crane section in reinforced concrete pile cap;Tower crane section is affixed with tower body integral;Twice anchor cable is set in also pre-buried two sleeve pipes in reinforced concrete pile cap, sleeve pipe;Tower body side is fixedly installed tensioning termination on reinforced concrete pile cap, and anchor cable one end is fixed on gooseneck through tensioning termination, and gooseneck is fixed on tensioning termination.The present invention also discloses the construction method of above-mentioned foundation structure.The present invention solves the problems, such as that existing tower crane can not be torn open while ensureing that high stability and high efficiency positioning are pacified, and can meet tower body antidumping, resistant slide power, good integrity, it is to avoid later stage expense and potential safety hazard.

Description

A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure and its construction method
Technical field
The present invention relates to a kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure and its construction method, belong to construction Field.
Background technology
Existing tower crane form is:Independent cushion cap foundation, rood beam basis, Pile-supported stand foundation and lattice column are high-order Cushion cap foundation.Independent cushion cap foundation and rood beam basis are typically disposed in below foundation excavation face, and basic earthwork is constructed after excavating, It has the disadvantage that foundation ditch needs slope shoveling, security protection and backfilling of earthwork, and operation side is big, high to subsoil requirement.Pile Stylobate plinth be solve natural foundation bearing capacity deficiency in the case of and use a kind of tower crane form, usually 1-4 roots perfusion Stake, it has the disadvantage that foundation ditch needs slope to cut the earth, security protection and the backfill earthwork, and construction working face is larger, and cost is higher.Lattice pillar height Position cushion cap foundation is used in deep basal pit, passes through in basement architectural engineering, and the base form saves earth excavation, bank protection, Backfilling of earthwork, but cost itself is high.
Existing tower crane form though be applicable the architectural engineering of different characteristics, exist be not operation being exactly cost high more Problem, and site condition there are certain requirements.Narrow and small to construction area site condition, foundation pit supporting pile has been constructed, basement Exterior wall is nearer with support pile, and requires that low cost is the factor that each building enterprise considers, current tower crane form is difficult to The requirement of condition of compatibility change.
The content of the invention
It is an object of the invention to the problem and shortcoming that overcome above-mentioned prior art to exist, there is provided a kind of single-pile elevated bearing-platform With anchor cable tower-crane foundation structure and its construction method.The present invention is greatly reduced engineering and is made using single pile, cushion cap and anchorage cable design Valency;Realized after foundation pit supporting pile excavated by single pile, cushion cap and anchorage cable design, solving existing tower crane can not protect simultaneously The problem that card high stability and high efficiency positioning peace are torn open, can meet tower body antidumping, resistant slide power, good integrity, it is to avoid the later stage Expense and potential safety hazard;Solve small in operation side, it is adaptable to which different soil properties, foundation pit supporting pile have been excavated, in its Lin Bianta Hang foundation construction;Its structure and its construction method are simple, and technology is easy to grasp and implements.
The solution of the present invention is as follows:A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure, it is characterised in that including one Root deposited reinforced concrete pile, reinforced concrete pile cap and tower crane section;
Described deposited reinforced concrete pile is arranged on below excavation face, and described deposited reinforced concrete pile upper end anchors and steel In reinforced concrete cushion cap;
Pre-buried tower crane section in described reinforced concrete pile cap;Described tower crane section is affixed with tower body integral;
Also pre-buried two sleeve pipes in described reinforced concrete pile cap, pass through anchor cable in described sleeve pipe;
Tower body side is fixedly installed tensioning termination on described reinforced concrete pile cap, and anchor cable one end is fixed on through tensioning termination On gooseneck, described gooseneck is fixed on tensioning termination;The anchor cable other end is embedded in the earthwork.
Further, steel reinforcement cage is provided with described deposited reinforced concrete pile, is set in described reinforced concrete pile cap Cushion cap reinforcing bar is equipped with, by concrete-placing reinforcing steel bar cage, cushion cap reinforcing bar, deposited reinforced concrete pile, armored concrete is formed and is held Platform simultaneously anchors both.
Further, described sleeve pipe is obliquely installed, and slip casting in sleeve pipe so that anchor cable is fixed.
Further, the support pile that cubic metre of earth side is also arranged on including having excavated is, the hat fine strain of millet for being arranged on support pile upper end.
Further, described support pile is locked by anchorage cable stretching.
A kind of single-pile elevated bearing-platform and the construction method of anchor cable tower-crane foundation structure, comprise the steps:
A, a piece artificial digging pile of use or mixed using a reinforcing bar in excavation face on the inside of the support pile and Guan Liang for having excavated Coagulate soil pouring pile hole to supporting course;
B, in lifting steel reinforcement cage in pouring pile hole, and pour to design stake top absolute altitude and be higher by 50-100cm;
C, abolish any excess concrete to reinforced concrete pile cap bottom absolute altitude 10cm, pour bed course;
D, installation platform reinforcing bar, while pre-buried tower crane embedded part, and two sleeve pipes, casting concrete are set by gradient positioning;
E, in tensioning termination is set on reinforced concrete pile cap face, poured together with reinforced concrete pile cap;
F, by two sleeve pipes, wear prestress anchorage cable slip casting;
G, prestressed stretch-draw is carried out after cement mortar reaches design strength, anchor cable is fixed by gooseneck, held with armored concrete Platform connects integral;
After the completion of h, prestressed stretch-draw, tower body is installed, allows tower body to be fixed on tower crane section.
The present invention compared with the prior art, has the following advantages that and beneficial effect:
(1)Clearly, the present invention solves ground endurance not enough using pile foundation, mainly improves its bearing capacity, using anchor cable for power transmission Draw, improve tower crane resistance to capsizing, good integrity;
(2)Consider compared to tower crane or building beyond the region of objective existence slope installation tower crane in basement is installed, including dismounting, soil The expense such as side's backfill and envelope floor has its good comprehensive benefit.
Brief description of the drawings
Fig. 1 is the side diagram of foundation structure of the present invention.
Specific embodiment
With reference to embodiment, the present invention will be further described.
A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure, including a deposited reinforced concrete pile 1, reinforced concrete Native cushion cap 2 and tower crane section 3;Deposited reinforced concrete pile 1 is arranged on below excavation face, deposited reinforced concrete pile upper end anchor Gu and in reinforced concrete pile cap 2;Pre-buried tower crane section 3 in reinforced concrete pile cap 2;Tower crane section 3 is affixed with tower body 8 Integrally;Anchor cable 5 is passed through in also pre-buried two sleeve pipes 4 in reinforced concrete pile cap 2, sleeve pipe 4;Tower on reinforced concrete pile cap 2 Body side is fixedly installed tensioning termination 6, and the one end of anchor cable 5 is fixed on gooseneck 7 through tensioning termination 6, and gooseneck is fixed on to be opened On pull end head;The rope other end of anchor 5 is embedded in the earthwork.
The present invention is provided with steel reinforcement cage in deposited reinforced concrete pile, and pile cap steel is provided with reinforced concrete pile cap Muscle, by concrete-placing reinforcing steel bar cage, cushion cap reinforcing bar, forms deposited reinforced concrete pile, reinforced concrete pile cap and incite somebody to action both Anchoring.Sleeve pipe inclines 20 degree of settings, and slip casting in sleeve pipe so that anchor cable is fixed.The present invention is also set in earth excavation side Some support piles 11, each support pile surface spray anchor armored concrete face, and locked by twice anchorage cable stretching.Support pile upper end Hat fine strain of millet is poured.
A kind of single-pile elevated bearing-platform and the construction method of anchor cable tower-crane foundation structure, comprise the steps:
A, in the support pile for having excavated(Locked using anchorage cable stretching)With Guan Liang inner side is using an artificial digging pile or is opening Digging face reaches design requirement depth using deposited reinforced concrete pile pore-forming a to supporting course;
B, in lifting steel reinforcement cage in pouring pile hole, and pour to design stake top absolute altitude and be higher by 50-100cm;
C, abolish any excess concrete to reinforced concrete pile cap bottom absolute altitude 10cm, pour bed course, it is long to bored concrete pile Bar Anchorage Degree must is fulfilled for design requirement;
D, installation platform reinforcing bar, while pre-buried tower crane embedded part, and two sleeve pipes, casting concrete are set by gradient positioning;
E, in tensioning termination is set on reinforced concrete pile cap face, poured together with reinforced concrete pile cap;
F, by two sleeve pipes, wear prestress anchorage cable slip casting;
G, prestressed stretch-draw is carried out after cement mortar reaches design strength, anchor cable is fixed by gooseneck, held with armored concrete Platform connects integral;
After the completion of h, prestressed stretch-draw, tower body is installed, allows tower body to be fixed on tower crane section.
Deposited reinforced concrete pile diameter of the present invention avoids original support pile anchor cable, and same twice anchor cable avoids original supporting Piled anchor rope position.If under the premise of twice anchor cable anchorage is unappeasable, one anchor cable can be increased on support pile, it is ensured that its Safety.To ensure the stability of original stake of excavation supporting, plain concrete load transfering strip 10 is set under the base plate of basement 9, soil pressure is resisted And power of toppling.
In single-pile elevated bearing-platform of the present invention and anchor cable tower-crane foundation structure, tower crane section and bolt use Q235-B, anchor Rope is prestress anchorage cable, and welding rod uses E43 types, weld seam to reach second-order weld quality requirement.
Although detailed description being given to specific embodiment of the invention above and being illustrated, it should be noted that We can carry out various equivalent changes and modification to above-mentioned implementation method according to conception of the invention, and the function produced by it is made With still without departing from specification covered it is spiritual when, all should be within protection scope of the present invention.

Claims (7)

1. a kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure, it is characterised in that including a deposited reinforced concrete pile, Reinforced concrete pile cap and tower crane section;
Described deposited reinforced concrete pile is arranged on below excavation face, and described deposited reinforced concrete pile upper end anchors and steel In reinforced concrete cushion cap;
Pre-buried tower crane section in described reinforced concrete pile cap;Described tower crane section is affixed with tower body integral;
Also pre-buried two sleeve pipes in described reinforced concrete pile cap, pass through anchor cable in described sleeve pipe;
Tower body side is fixedly installed tensioning termination on described reinforced concrete pile cap, and anchor cable one end is fixed on through tensioning termination On gooseneck, described gooseneck is fixed on tensioning termination;The anchor cable other end is embedded in the earthwork.
2. a kind of single-pile elevated bearing-platform according to claim 1 and anchor cable tower-crane foundation structure, it is characterised in that
Steel reinforcement cage is provided with described deposited reinforced concrete pile, pile cap steel is provided with described reinforced concrete pile cap Muscle, by concrete-placing reinforcing steel bar cage, cushion cap reinforcing bar, forms deposited reinforced concrete pile, reinforced concrete pile cap and incite somebody to action both Anchoring.
3. a kind of single-pile elevated bearing-platform according to claim 1 and anchor cable tower-crane foundation structure, it is characterised in that described Sleeve pipe is obliquely installed, and slip casting in sleeve pipe so that anchor cable is fixed.
4. a kind of single-pile elevated bearing-platform according to claim 1 and anchor cable tower-crane foundation structure, it is characterised in that also include The support pile for being arranged on cubic metre of earth side, the hat fine strain of millet for being arranged on support pile upper end are excavated.
5. a kind of single-pile elevated bearing-platform according to claim 4 and anchor cable tower-crane foundation structure, it is characterised in that described Support pile is locked by anchorage cable stretching.
6. the construction method of a kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure, it is characterised in that comprise the steps:
A, a piece artificial digging pile of use or mixed using a reinforcing bar in excavation face on the inside of the support pile and Guan Liang for having excavated Coagulate soil pouring pile hole to supporting course;
B, in lifting steel reinforcement cage in pouring pile hole, and pour to design stake top absolute altitude and be higher by 50-100cm;
C, abolish any excess concrete to reinforced concrete pile cap bottom absolute altitude 10cm, pour bed course;
D, installation platform reinforcing bar, while pre-buried tower crane embedded part, and two sleeve pipes, casting concrete are set by gradient positioning;
E, in tensioning termination is set on reinforced concrete pile cap face, poured together with reinforced concrete pile cap;
F, by two sleeve pipes, wear prestress anchorage cable slip casting;
G, prestressed stretch-draw is carried out after cement mortar reaches design strength, anchor cable is fixed by gooseneck, held with armored concrete Platform connects integral;
After the completion of h, prestressed stretch-draw, tower body is installed, allows tower body to be fixed on tower crane section.
7. the construction method of a kind of single-pile elevated bearing-platform according to claim 1 and anchor cable tower-crane foundation structure, its feature It is that, to ensure the stability of original stake of excavation supporting, plain concrete load transfering strip is set under basement bottom board, resists soil pressure and incline Cover power.
CN201710007632.4A 2017-01-05 2017-01-05 A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure and its construction method CN106759442A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110144909A (en) * 2019-05-21 2019-08-20 无锡市水利设计研究院有限公司 A kind of soil-slope ruggedized construction and method
CN110195438A (en) * 2019-06-15 2019-09-03 中国化学工程第十一建设有限公司 The method for ultra-deep foundation pit construction on side is faced on basis under the conditions of a kind of narrow space
CN110725322A (en) * 2019-10-29 2020-01-24 中建七局安装工程有限公司 Foundation pit slope tower crane construction method
CN110747880A (en) * 2019-10-30 2020-02-04 中建五局第三建设有限公司 Construction method of high slope isolation bearing platform

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481910A (en) * 2009-01-09 2009-07-15 江苏省华建建设股份有限公司 Construction method of foundation pit slope supported independent pile tower crane foundation
CN202012088U (en) * 2011-03-30 2011-10-19 浙江金典建设有限公司 Foundation structure of tower crane
FR2980222A1 (en) * 2011-09-16 2013-03-22 Soletanche Freyssinet Method for repairing construction work, involves producing reinforced concrete body above concrete base and around pile, and connecting reinforced concrete body to pile, where anchor pile is connected to concrete body through concrete base
CN203174621U (en) * 2013-04-11 2013-09-04 中建城市建设发展有限公司 Tower crane foundation
CN104532868A (en) * 2014-12-11 2015-04-22 西南交通大学 Anchored high bearing platform grouped pile foundation building method for high-steep deformation slope area bridge
CN206376274U (en) * 2017-01-05 2017-08-04 中建三局第二建设工程有限责任公司 A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481910A (en) * 2009-01-09 2009-07-15 江苏省华建建设股份有限公司 Construction method of foundation pit slope supported independent pile tower crane foundation
CN202012088U (en) * 2011-03-30 2011-10-19 浙江金典建设有限公司 Foundation structure of tower crane
FR2980222A1 (en) * 2011-09-16 2013-03-22 Soletanche Freyssinet Method for repairing construction work, involves producing reinforced concrete body above concrete base and around pile, and connecting reinforced concrete body to pile, where anchor pile is connected to concrete body through concrete base
CN203174621U (en) * 2013-04-11 2013-09-04 中建城市建设发展有限公司 Tower crane foundation
CN104532868A (en) * 2014-12-11 2015-04-22 西南交通大学 Anchored high bearing platform grouped pile foundation building method for high-steep deformation slope area bridge
CN206376274U (en) * 2017-01-05 2017-08-04 中建三局第二建设工程有限责任公司 A kind of single-pile elevated bearing-platform and anchor cable tower-crane foundation structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110144909A (en) * 2019-05-21 2019-08-20 无锡市水利设计研究院有限公司 A kind of soil-slope ruggedized construction and method
CN110144909B (en) * 2019-05-21 2020-10-20 无锡市水利设计研究院有限公司 Method for reinforcing soil slope reinforcing structure
CN110195438A (en) * 2019-06-15 2019-09-03 中国化学工程第十一建设有限公司 The method for ultra-deep foundation pit construction on side is faced on basis under the conditions of a kind of narrow space
CN110725322A (en) * 2019-10-29 2020-01-24 中建七局安装工程有限公司 Foundation pit slope tower crane construction method
CN110747880A (en) * 2019-10-30 2020-02-04 中建五局第三建设有限公司 Construction method of high slope isolation bearing platform

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