CN104264679A - Construction method of tower transmission iron tower foundation large-diameter underwater cast-in-place piles - Google Patents
Construction method of tower transmission iron tower foundation large-diameter underwater cast-in-place piles Download PDFInfo
- Publication number
- CN104264679A CN104264679A CN201410488076.3A CN201410488076A CN104264679A CN 104264679 A CN104264679 A CN 104264679A CN 201410488076 A CN201410488076 A CN 201410488076A CN 104264679 A CN104264679 A CN 104264679A
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- Prior art keywords
- casing
- drift sand
- type casing
- construction
- tapping type
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/40—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds in open water
Abstract
The invention relates to a construction method of tower transmission iron tower foundation large-diameter underwater cast-in-place piles. The method comprises, during mud retaining wall drilling and pile casting, constructing a mud retaining wall, wherein the inside of mud retaining wall forms a pile hole, and coaxially mounting a shaft casing on the ground at the top end of the pile hole. The method comprises the steps of (1) exploring the position of a drift sand layer; (2) mounting the spliced type casing on a steel reinforcement cage of the position where the drift sand layer is formed; (3) mounting steel reinforcement cages; (4) isolating the drift sand layer; (5) performing construction of concrete cast-in-place piles. The construction method of the tower transmission iron tower foundation large-diameter underwater cast-in-place piles is applicable to field processing, economical and practical, guarantees the effect of no influence of the drift sand layer on any process as well as the construction progress. The construction method of the tower transmission iron tower foundation large-diameter underwater cast-in-place piles has the advantage of obviously enhancing construction rapidity, practicality, sociality and economical efficiency.
Description
Technical field
The invention belongs to transmission line foundation construction and the realm of building construction, relate to and meet the construction method that drift sand formation heavy caliber underwater concrete filling pile uses attachment tapping type casing, especially a kind of electric power pylon basis heavy caliber Underwater pile construction method.
Background technology
Mud off pore-creating filling pile is applicable to the higher geological conditions of groundwater table, at present, and this castinplace pile of the many employings of power transmission line iron tower foundation large aperture, Tianjin (more than one meter) castinplace pile; This stake is in the borehole when running into drift sand formation, must process, do not process or deal with improperly, constructional difficulties can be caused, affect pile body total quality, cause cast-in-place concrete pile amount of concrete excess to build, very easily occur necking down broken pile situation, affect workmanship and construction speed.
At present, be use filling perforation to bore method and full casing construction again at process drift sand formation majority, the filling perforation again method of boring is after filling out drift sand formation clay, rubble, bores again, fuzzy to drift sand formation disposition, sometimes will repeatedly carry out filling perforation and bore again; Full casing construction, if pull out casing after reaching initial set, pile body concrete easily occurs and soil property segregation phenomenon, do not reach the designing requirement of friction pile, if built while carry full casing, still occur that drift sand formation is to the erosion of cast-in-situ concrete, erosion condition, also easily causes pile body necking down, broken pile situation, these construction methods, all cause bad impact to construction costs, duration, quality.
Through retrieval, do not find the public technology identical with present patent application.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of electric power pylon basis heavy caliber Underwater pile construction method, this method is applicable to job site completely can processing and fabricating, and execute-in-place, also can coordinate with reinforcing cage processing stand and process.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of electric power pylon basis heavy caliber Underwater pile construction method, when mud off pore-forming fills with pile driving construction, construction forms mud off, is stake holes in this mud off, ground location on stake holes top coaxially installs well head casing, it is characterized in that: construction sequence is as follows:
(1) explore drift sand formation position, the distance obtained between ground and drift sand formation is surveyed in geological prospecting, and examines through the actual drilling operation of construction drill rig personnel;
(2) tapping type casing is installed on the reinforcing cage of drift sand formation position, reinforcing cage forms cylinder barrel shaped mesh skeleton structure by multiple lateral tie and Duo Gen vertical reinforcement, vertical reinforcement is many of radial equipartition, the outer uniform lateral tie being fixed with multiple loop configuration of coaxial spaced of these many vertical reinforcements, all installs a tapping type casing in the reinforcing cage circumferential position of corresponding drift sand formation position; Tapping type casing is overlapped the cylindrical structure formed successively by multiple curved plate, the equal radial cantilever of the plurality of curved plate middle inside is fixed with many casing gag lever posts, in the spacing hole that welds of vertical reinforcement side that reinforcing cage is stretched in cantilevered the inner of casing gag lever post, and be all vertically fitted with an alignment pin in the middle part of the casing gag lever post inside reinforcing cage, this alignment pin locking tapping type casing is adjacent to the outer wall of reinforcing cage, the equal chain in the plurality of alignment pin upper end is connected to stay cord, and the upper end of this stay cord is stretched out outside well head casing;
Casing gag lever post between reinforcing cage and tapping type casing is all set with compression one compression spring, this compression spring continues to provide to tapping type casing the pressure expanded outwardly;
(3) install reinforcing cage, reinforcing cage is installed to precalculated position in mud off, tapping type casing is corresponding with exploring the drift sand formation position arrived, and split type casing height is greater than corresponding drift sand formation, and the diameter before the work of tapping type casing is less than stake holes;
(4) detached flow sand bed, ground construction personnel pull up alignment pin by stay cord, after the alignment pin of the spacing compression spring in tapping type casing is pulled up, tapping type casing under compression spring pressure to external expansion, casing integral radius is made to become large, this casing and mud off close contact;
(5) carry out Concrete Grouting Pale.
And described drift sand formation is multilayer, the spacing on this multilayer drift sand formation and ground is determined in exploration respectively.
And the wall thickness of described tapping type casing is at 4mm-6mm.
Advantage of the present invention and good effect are:
1, the present invention not affecting boring, mud off, put reinforcing steel bar cage, under the integral construction operation prerequisite such as cast-in-place concrete pile is built, be attached to the concrete that pile body builds by the tapping type casing in reinforcing steel bar cage to be separated with drift sand formation, fundamentally solve hand drift sand and affect broken pile, necking down problem, raising can the reliability of workmanship;
2, the tapping type casing that the present invention adopts belongs to local casing, adapts to individual layer or occurs the special treatment of multilayer drift sand formation, as isolated with drift sand formation; Concreting beyond tapping type casing normally normally contacts with fill orifice retaining wall, compares with full casing, can not show the segregation phenomenon of pile body and fill orifice cinclides wall after this construction; And at compression spring outwards on, reinforcing steel bar cage from Row sum-equal matrix verticality, can play the effect of reinforcing steel bar cage topping cushion block.
3, gag lever post not only matcoveredn thickness in limit spring in the present invention, also because there being the effect of casing gag lever post pulling force, there will not be transient when breaking concrete.
4, the present invention is applicable to on-the-spot processing, economical and practical, ensure that meeting drift sand formation does not affect any operation, do not affect the effect of construction speed, and the present invention also produces the effect of more obvious quick construction, practicality, social, economy.
Accompanying drawing explanation
Fig. 1 is structure and working principle schematic diagram of the present invention;
Fig. 2 is tap casing structure schematic diagram before son of pulling pin;
Fig. 3 is tap casing structure schematic diagram after son of pulling pin.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of electric power pylon basis heavy caliber Underwater pile construction method, when mud off pore-forming fills with pile driving construction, preliminary construction forms mud off 6, be stake holes in this mud off, in the position, ground 1 on stake holes top, well head casing 2 is coaxially installed, this well head casing top is above ground level, and innovative point of the present invention is: construction sequence is as follows:
(1) explore drift sand formation position, the distance obtained between ground 1 and drift sand formation is surveyed in geological prospecting, and examines through the actual drilling operation of construction drill rig personnel;
Consider that multilayer drift sand formation need determine the position of this multilayer drift sand formation respectively, the present embodiment is depicted as the situation of upper stream sand bed 12 and the two-layer drift sand formation of underflow sand bed 11;
(2) tapping type casing is installed on the reinforcing cage of drift sand formation position, reinforcing cage forms cylinder barrel shaped mesh skeleton structure by multiple lateral tie 4 and Duo Gen vertical reinforcement 5, vertical reinforcement is many of radial equipartition, the outer uniform lateral tie being fixed with multiple loop configuration of coaxial spaced of these many vertical reinforcements, all installs a tapping type casing 7 in the reinforcing cage circumferential position of corresponding drift sand formation position;
The structure of tapping type casing is see shown in accompanying drawing 2 to accompanying drawing 3, tapping type casing is overlapped the cylindrical structure formed successively by multiple curved plate, the equal radial cantilever of the plurality of curved plate middle inside is fixed with many casing gag lever posts 9, in the spacing hole that welds of vertical reinforcement side that reinforcing cage is stretched in cantilevered the inner of casing gag lever post, and be all vertically fitted with an alignment pin 8 in the middle part of the casing gag lever post inside reinforcing cage, this alignment pin locking tapping type casing is adjacent to the outer wall of reinforcing cage, the equal chain in the plurality of alignment pin upper end is connected to stay cord 3, the upper end of this stay cord is stretched out outside well head casing,
Casing gag lever post between reinforcing cage and tapping type casing is all set with compression one compression spring 10, this compression spring continues to provide to tapping type casing the pressure expanded outwardly;
The wall thickness of tapping type casing is at 4mm-6mm, and large aperture castinplace pile topping, generally at 100mm, considers that compression spring outwards pushes up the softness of power and mud off simultaneously, ignores this concrete trace contracting stake problem;
(3) install reinforcing cage, reinforcing cage is installed to precalculated position in mud off, now tapping type casing is corresponding with exploring the drift sand formation position arrived respectively, and split type casing height is greater than corresponding drift sand formation respectively, and the diameter before the work of tapping type casing is less than stake holes;
(4) detached flow sand bed, ground construction personnel pull up alignment pin by stay cord, after the alignment pin of the spacing compression spring in tapping type casing is pulled up, tapping type casing under compression spring pressure to external expansion, casing integral radius is made to become large, this casing and mud off close contact, the concrete of being built by pile body is isolated with drift sand formation;
Outwards act on simultaneously at tapping type casing compression spring, reinforcing steel bar cage can be coordinated to mention on a small quantity, and under compression spring effect, reinforcing steel bar cage can from Row sum-equal matrix verticality, code requirement reinforcing steel bar cage verticality is less than one thousandth, plays the effect of reinforcing steel bar cage topping cushion block;
(5) carry out Concrete Grouting Pale.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (3)
1. an electric power pylon basis heavy caliber Underwater pile construction method, when mud off pore-forming fills with pile driving construction, construction forms mud off, is stake holes in this mud off, ground location on stake holes top coaxially installs well head casing, it is characterized in that: construction sequence is as follows:
(1) explore drift sand formation position, the distance obtained between ground and drift sand formation is surveyed in geological prospecting, and examines through the actual drilling operation of construction drill rig personnel;
(2) tapping type casing is installed on the reinforcing cage of drift sand formation position, reinforcing cage forms cylinder barrel shaped mesh skeleton structure by multiple lateral tie and Duo Gen vertical reinforcement, vertical reinforcement is many of radial equipartition, the outer uniform lateral tie being fixed with multiple loop configuration of coaxial spaced of these many vertical reinforcements, all installs a tapping type casing in the reinforcing cage circumferential position of corresponding drift sand formation position; Tapping type casing is overlapped the cylindrical structure formed successively by multiple curved plate, the equal radial cantilever of the plurality of curved plate middle inside is fixed with many casing gag lever posts, in the spacing hole that welds of vertical reinforcement side that reinforcing cage is stretched in cantilevered the inner of casing gag lever post, and be all vertically fitted with an alignment pin in the middle part of the casing gag lever post inside reinforcing cage, this alignment pin locking tapping type casing is adjacent to the outer wall of reinforcing cage, the equal chain in the plurality of alignment pin upper end is connected to stay cord, and the upper end of this stay cord is stretched out outside well head casing;
Casing gag lever post between reinforcing cage and tapping type casing is all set with compression one compression spring, this compression spring continues to provide to tapping type casing the pressure expanded outwardly;
(3) install reinforcing cage, reinforcing cage is installed to precalculated position in mud off, tapping type casing is corresponding with exploring the drift sand formation position arrived, and split type casing height is greater than corresponding drift sand formation, and the diameter before the work of tapping type casing is less than stake holes;
(4) detached flow sand bed, ground construction personnel pull up alignment pin by stay cord, after the alignment pin of the spacing compression spring in tapping type casing is pulled up, tapping type casing under compression spring pressure to external expansion, casing integral radius is made to become large, this casing and mud off close contact;
(5) carry out Concrete Grouting Pale.
2. electric power pylon basis according to claim 1 heavy caliber Underwater pile construction method, it is characterized in that: described drift sand formation is multilayer, the spacing on this multilayer drift sand formation and ground is determined in exploration respectively.
3. electric power pylon basis according to claim 1 heavy caliber Underwater pile construction method, is characterized in that: the wall thickness of described tapping type casing is at 4mm-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488076.3A CN104264679B (en) | 2014-09-23 | 2014-09-23 | A kind of electric power pylon basis heavy caliber Underwater pile construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410488076.3A CN104264679B (en) | 2014-09-23 | 2014-09-23 | A kind of electric power pylon basis heavy caliber Underwater pile construction method |
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| CN104264679A true CN104264679A (en) | 2015-01-07 |
| CN104264679B CN104264679B (en) | 2016-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794205A (en) * | 2020-07-04 | 2020-10-20 | 四川航天建筑工程有限公司 | Anti-collapse rotary digging pile construction device and construction method thereof |
| CN112746615A (en) * | 2020-12-30 | 2021-05-04 | 山东交通学院 | Brine stratum mucky soil cast-in-place pile construction is with protecting a section of thick bamboo device |
| CN113203137A (en) * | 2021-05-17 | 2021-08-03 | 中国铁塔股份有限公司盐城市分公司 | Air conditioning system using communication iron tower foundation as soil source and construction method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001032271A (en) * | 1999-07-26 | 2001-02-06 | Takenaka Komuten Co Ltd | Work execution method of cast-in-place concrete pile having long steel frame therein |
| CN101397797A (en) * | 2008-09-26 | 2009-04-01 | 中冶建工有限公司 | Construction method of shifting sand layer pile foundation breast wall |
| CN102094419A (en) * | 2011-03-09 | 2011-06-15 | 中铁六局集团有限公司 | Method for forming drilled pile in foundation with silty sand layer |
| CN103696419A (en) * | 2013-12-20 | 2014-04-02 | 中国一冶集团有限公司 | Pile foundation construction fabricated casing and using method thereof |
-
2014
- 2014-09-23 CN CN201410488076.3A patent/CN104264679B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001032271A (en) * | 1999-07-26 | 2001-02-06 | Takenaka Komuten Co Ltd | Work execution method of cast-in-place concrete pile having long steel frame therein |
| CN101397797A (en) * | 2008-09-26 | 2009-04-01 | 中冶建工有限公司 | Construction method of shifting sand layer pile foundation breast wall |
| CN102094419A (en) * | 2011-03-09 | 2011-06-15 | 中铁六局集团有限公司 | Method for forming drilled pile in foundation with silty sand layer |
| CN103696419A (en) * | 2013-12-20 | 2014-04-02 | 中国一冶集团有限公司 | Pile foundation construction fabricated casing and using method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794205A (en) * | 2020-07-04 | 2020-10-20 | 四川航天建筑工程有限公司 | Anti-collapse rotary digging pile construction device and construction method thereof |
| CN112746615A (en) * | 2020-12-30 | 2021-05-04 | 山东交通学院 | Brine stratum mucky soil cast-in-place pile construction is with protecting a section of thick bamboo device |
| CN113203137A (en) * | 2021-05-17 | 2021-08-03 | 中国铁塔股份有限公司盐城市分公司 | Air conditioning system using communication iron tower foundation as soil source and construction method thereof |
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| CN104264679B (en) | 2016-03-30 |
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Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: State Grid Corporation of China Applicant after: Tianjin Electric Power Transmission & Transformation Engineering Corp. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: Tianjin Electric Power Transmission & Transformation Engineering Corp. |
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