CN100453741C - Block-type steel pipe pile - Google Patents
Block-type steel pipe pile Download PDFInfo
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- CN100453741C CN100453741C CNB2004100333453A CN200410033345A CN100453741C CN 100453741 C CN100453741 C CN 100453741C CN B2004100333453 A CNB2004100333453 A CN B2004100333453A CN 200410033345 A CN200410033345 A CN 200410033345A CN 100453741 C CN100453741 C CN 100453741C
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- steel pipe
- diameter
- blade
- pile body
- pile
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Abstract
Provided is an inexpensive steel pipe pile which is divided into two sections of a distal-end part for enlarging a diameter of a pile and a supplementary part, so that a damage in a blade is avoided and a long-term bearing capacity in the distal-end part is improved. The steel pipe pile 21A is divided into the distal-end part composed of an excavating edge 23 and a blade 24 for enlarging the diameter and the supplementary part of an extension steel pipe 25. The distal-end part for enlarging the diameter and the supplementary part are connected with a suitable means when needed, which fulfills manufacturing, storage and transportation or the like at a low cost and that improves a practical bearing capacity by providing a range in choosing a diameter of the steel pipe to be used for both parts. The range of choice in the steel pipe diameters can be widened by utilizing a steel pipe of a different diameter 22 at the distal-end part for enlarging the diameter.
Description
Technical field
The present invention relates to be used to strengthen ground and be embedded in steel pipe pile in the soil.
Background technology
The load that is arranged on generations such as ground building and building structure is supported by ground.Therefore, in case the weight of structure surpasses the support force of ground, will begin to occur the unusual of different sinking forms usually, process short-term or long-term time rear-inclined enlarge to become and can't continue to use.So when building the structure of weight to a certain degree, at first will make the support force that the boring geological test is confirmed ground in the place of building.
Need to strengthen ground if support force is not enough, then want the engagement formation thing to select best mode.For example, for building, need to strengthen the pile body that support force can use the concrete system or the steel pipe system of moulding.Can adopt pile body is squeezed into the method that ground utilizes the frictional force between pile body surface and the stratum, also can adopt the method for burying stratum underground with required support force.The kind of used pile body is along with height, the weight of building, and distance to have the degree of depth on support force stratum different and change.
Method for the pile body of the concrete system of burying underground or steel pipe system, the driven pile body construction method of using bobbing machine and weight is arranged, after reinforcing, the root that drill bit is holed plants construction method again into pile body, and, then pile body is used as the construction method etc. that drill bit rotates injection as shown in Figure 1 at additional sword 3 and the blade 4 of excavating of the front end of the steel pipe 2 of pile body 1.Rotate in the injection construction method, use the steel pipe of external diameter 114.3～247.4mm, additional diameter is the blade of 2～3 times of diameter of steel tube in its outside.The increase blade diameter can strengthen the effective cross section of pile body front end and amass, and increases the long-term front end support force of corresponding N value.
According to the record of the handbook (rotating the performance evaluation construction method of injection steel pipe pile) of juridical person's Japanese architecture center publication, the relation of the body diameter of basic pile body (steel pipe pile external diameter)/maximum construction depth is 114.3mm/14.9m, 247.4mm/34.8m.From the length range of 3～6m, choose the steel pipe that is fit to needs and be connected to Len req.This construction method noise is low, not casting nor make water when pile body is buried underground, so have the advantage of not polluting etc.
Load is supported by the bottom and the blade of pile body in [non-patent literature 1] juridical person's Japanese architecture center publication handbook version rotation in 2002 injection steel pipe pile.Even therefore use the steel pipe of same diameter,, the increase blade reduces required stake number thereby can increasing support force.And on the other hand, obtain propulsive force owing to rotate the injection steel pipe pile from spiral helicine blade, in burying process underground, to run through the stratum that is mixing stick nature, chiltern, gravel etc. and finally arrive hard supporting layer then, but also to stir scope greater than the pile body diameter, so in this process, exist blade to be subjected to exceeding the effect of power of anticipation and the problem of being damaged easily.And this damage is sightless.
Though use slab can make the big major diameter blade of intensity, because blade is by being welded to connect on steel pipe, there is the low problem of intensity that makes pile body in the steel pipe parent strength deficiency of welding portion if the thickness of slab of blade and steel pipe has difference.So so long as not the special steel pipe of heavy wall, the diameter of steel pipe and the range of choice of thickness are just limited, the intensity that desire increases blade just needs to select the steel pipe of big external diameter, but can cause the problem that cost improves so conversely again.
And, the effect of considering pile body is that the load that structure produce is delivered to supporting layer effectively, preferably use the upper section remove beyond the bottom periphery can bear rotatory force (distortion) when burying underground, and have when the support load and can bear the steel pipe of bending (amount of deflection) intensity in the allowed band.So, pile body is excessively abundant for load at the diameter of steel tube of face of land side, has uneconomic problem.The present invention is a purpose so that the attached cutting sword that can address the above problem and the block-type steel pipe pile of blade to be provided just.
Summary of the invention
The invention provides a kind of block-type steel pipe pile, at front end the steel pipe pile that excavates sword and blade is installed, its pile body is divided into by steel pipe and excavates the fore-end of the enlarged-diameter that sword and blade constituted and be connected the additional part that the steel tube place of this part top constitutes; In its structure, front end and additional this two-part steel pipe can be selected arbitrarily, and both use suitable mode to connect.
The present invention also provides a kind of steel pipe pile, the steel pipe that will possess the fore-end that excavates sword and spiral blade is connected to the lower end of the steel pipe that replenishes part by welded construction, the steel pipe that should replenish part is extended along the vertical direction and is formed by steel pipe, it is characterized in that, the steel pipe of described fore-end is the reducing steel pipe that enlarges gradually to the below diameter from the top, the two ends of the steel pipe above-below direction of this fore-end connect and enlarged by smooth surface, the diameter at the upper end side position in the steel pipe of described fore-end is identical with the diameter of the steel pipe of described additional part, carries out described connection in the mode of the steel pipe lower end of attached described additional part.
Block-type steel pipe pile of the present invention can obtain following these effects.
Additional the have fore-end of the enlarged-diameter steel tube place formation of excavating sword and blade and additional part two parts that attached steel tube place constitutes because the pile body branch is served as reasons are so can reduce the required cost of stocking up, take care of, transporting.And, because pile body separated into two parts, the range of choice of not only replenishing the part steel pipe increases, and can select various connected modes such as assembling welding or flange connection to assemble, and because can assemble at the scene, so can also coordinating operation carry out that situation is supplied with etc., delivery dates such as assembling, transportation, warehouse-in, management was also carried out easily.
Because blade pass is crossed the reinforcement plate and pillar strengthens, the damage probability of blade just greatly reduces.If use reducing steel pipe or thick walled steel tube, then can under the situation that does not influence the steel pipe that replenishes part, use slab to increase blade diameter, the effective cross section of strengthening the pile body front end is long-pending.And even blade diameter one regularly changes the wide cut of the diameter increase and decrease change blade of fore-end steel pipe, compression area can not change yet.The width that reduces blade can improve economic effect and also works for the damage that prevents blade in the aspect of material and construction.Like this, enlarged the range of choice of the diameter of steel tube of the blade diameter that is used to guarantee support force and fore-end, and for be applied to the lower ground of relative intensity also provide sufficient may.
Rotating pile body when the sand that excavates the front end that the sword scraping digs out is discharged upward by the blade in the outside, for the internal diameter of fore-end with replenish the pile body that the internal diameter of part has difference, even the steel duct of front end is an opening, dwindle under the effect effect sand in the pipe by densification and block steel pipe at the internal diameter of reducing steel pipe, can obtain and the pile body front end equal support force of situation of remaining silent.And reducing steel pipe and thick walled steel tube that block-type steel pipe pile is used can also use manufactured goods, help to reduce cost.
Description of drawings
Fig. 1 is for rotating the lateral view and the upward view of penetration pile.(existing example)
Fig. 2 (A, B) is the lateral view and the upward view of pile body.(embodiment 1)
Fig. 3 is the partial sectional view of Fig. 2 (A) of seeing from the visual angle of right side arrow a.
Fig. 4 for the stake of comparison diagram 1 and Fig. 2 by fore-end and replenish part change diameter of steel tube the ground sectional view.
Fig. 5 (A, B) is the lateral view and the upward view of pile body.(embodiment 2)
Fig. 6 (A, B) is the lateral view and the upward view of the pile body of other forms of expression.
Fig. 7 (A, B) is the lateral view of reduced pipe.
Fig. 8 is the partial sectional view of pile body.(embodiment 3)
The specific embodiment
The present invention for be purpose with the support force that enlarge to rotate the injection steel pipe pile, provide its pile body be divided into by steel pipe, excavate the fore-end that sword, blade were constituted and be connected this part top additional part steel pipe and can connect both block-type steel pipe pile at any time.Promptly, the enhancement measures of damaged blade and make front end and replenish two-part diameter of steel tube and have difference and enlarge the selectable range that replenishes the part steel pipe when being used to prevent incidental burying underground on the major diameter blade, thus realized easily increasing the structure of support force.
Prevent the structure of blade injury, the upper end of having taked the fore-end that constitutes at steel pipe, cutting edge and blade is that install and strengthens plate, pillar is set at three places that strengthen plate at least runs through downwards and be fixed on scheme on the blade, incidental blade injury when being used for preventing to excavate on the boundary with the scope that is no more than blade diameter.And this structure utilization is strengthened plate and is connected with the steel pipe of the additional part of top.If reduce to strengthen the internal diameter of plate, with respect to the steel pipe of fore-end, additional part can easily be used than fine steel tube like this.
For by steel pipe, excavate the fore-end that sword and blade constituted, a side of having taked to use the different reducing steel pipe of two ends diameter, enlarged-diameter towards the below and additional thereon excavate sword and blade, than a side of minor diameter with replenish the structure that steel pipe partly is connected.Reduced pipe can use the existing pipe arrangement that makes with reducing joint or conical pipe, can select also that the steel pipe new system for the arbitrary surface or the conical surface processes between the two-port.
Do not use the reducing steel pipe, and adopt for by steel pipe, excavate the fore-end that sword and blade constituted and use wall thickness greater than the steel pipe that replenishes part, and the structure that connects the steel pipe that replenishes part behind the reinforcement plate is installed on the steel pipe of heavy wall also can.Front end can use welding or flange, bolt and nut with additional two-part the connection.And, fore-end can be by casting integratedization formation, at this moment, can adopt the connected mode that is connected by screw bolt and nut after on foundry goods and steel pipe, flange being set, perhaps in foundry goods one side internal thread is set and in steel pipe one side external screw thread is set and be threaded both sides are fixed together without flange.
Being divided into front end and replenishing two-part block-type steel pipe pile can easily corresponding more shallow supporting layer.And, rotate at pile body, the excavation sword cutting sand of front end and when discharging upward, because the shape that begins the reducing part that diameter reduces from the stake front end to the sand compression and make it densified, is attempted to enter the inboard a part of sand of stake and is prevented from by blade.So,, can obtain and the equal support force of situation that the stake front end situation of remaining silent or near the pipe inner face front end use inaccessible plate for enlarged-diameter steel pipe pile of the present invention.
The steel pipe of the fore-end of Fig. 3 and replenish part steel pipe, Fig. 5 the reducing steel pipe two ends, Fig. 8 fore-end steel pipe and replenish in the steel pipe of part, separately shown in diameter D
2And D
3Ratio, can be from 1.2～2.5 scope, perhaps better from 1.5～2.5 scope, perhaps more betterly in 1.5～2.0 scope, select.That this numerical value can get is littler in that the distance from the face of land to the supporting layer is very dark must use longer pile body the time, superficial and can get when using short pile body big.
Fig. 2 (A, B) is the lateral view and the upward view of pile body 11.Constitute the outer diameter D of pile body
2The front end of the steel pipe 12 of (with reference to Fig. 3) excavates sword 13 with two, and having the external diameter with certain angle on it is D
1Spiral helicine blade 14.Pile body rotates and will pierce in ground down the auxiliary of excavation sword and blade.Blade does not damage when pile body is buried underground, strengthens plate 15 in the upper fixed of blade, and becomes four parts position that pillar 16 is set to extend on blade and run through to have come humidification cutting apart this plate circumference.Pillar need be in the thickness of considering blade and the decision of size back, and quantity also not necessarily is exactly four.
Fig. 3 is the partial sectional view of Fig. 2 (A) of seeing from the visual angle of right side arrow a.The steel pipe 12 of the fore-end of pile body 11 comprises that the length of the thickness of strengthening plate 15 is with L
1Expression.The joint face of the steel pipe 18 of the enhancing of reinforcement plate double as and blade and additional part.Excavating sword 13 is fixed on steel pipe front end and the pillar 16.Like this, the position with the different pillars of number that excavates sword and installation site also can change.
In length L
1Fore-end on attached length L
2, outer diameter D
3The steel pipe 18 of additional part, constituted the pile body 11 of length L.By steel pipe 12, excavate fore-end that sword 13 and blade 14 constituted and assemble as required with the steel pipe that replenishes part and just can.Front end needn't be necessarily identical with additional two-part diameter of steel tube, can select diameter according to the condition free of ground.General pile body uses and is welded to connect, but also can replenish steel pipe partly and strengthen and use flange 19 (dotted line) between the plate and then use welding or the bolt connection.
Fig. 4 is the expression steel pipe pile 1 of Fig. 1 of explanation and of the present invention by front end with replenish the ground sectional view of the block-type steel pipe pile 11 of change diameter of steel tube dimerous in [background technology] relatively.The former pile body needs to arrive the robust support layer N of desired thickness in order to support load W
2Respective length.But because arrive the stratum that has all intensity and thickness before the firm supporting layer, so if resemble the effective cross section area that enlarges front end the latter's the pile body, even if so for the more weak supporting layer N of near surface
2As long as have required thickness and just can be used effectively.
Be used in firm supporting layer N
2More weak supporting layer N
1Pile body, length was different with diameter when load was identical.By supporting layer decision blade diameter and pipe diameter (D, D
2), by load decision pipe diameter (D, D
3), by the degree of depth of distance supporting layer decision length (L).Therefore, pile body 1 length of the same diameter D of total length is big, and comprises the cost height of burial and construction.Pile body 11 of the present invention has shortened fore-end L accordingly
1, increased slightly D
2, shortened additional partial L
2, subtracted carefully D
3, make the pile body total length shorten, controlled the cost that comprises burial and construction preferably.
Fig. 5 (A, B) is lateral view and the upward view with the pile body 21 of flange connection.Length L
1Fore-end use reducing steel pipe 22, connect in major diameter one side and excavate sword 23 and blade 24.The length L of the attached additional part of minor diameter one side
2Steel pipe 25 constitute the pile body of length L.The reducing steel pipe can be shaped by extruding etc. then by setting required diameter of steel tube, also can choose suitable size from the reducing joint that pipe arrangement is used and use.
Since in the reducing steel pipe 22 except that the area of ground connection side (larger diameter side) thickness of slab also increased, blade 24 can adopt slab and expanded outer diameter to increase the support force of pile body.So, though it is thinner to replenish the steel pipe of part, still can obtain increasing the same effect of support force with additional big blade on one whole steel pipe.Though using the pile body inside of reduced pipe at fore-end is hollow, but when pile body is buried underground, can compress and block steel pipe in the part of dwindling of reducing steel pipe, thereby can obtain the situation of remaining silent or the equal support force of situation that near the pipe inner face front end uses choke plate with the pile body front end from pile body bottom to the sand of excavating of pile body inner face extruding.
Fig. 6 (A, B) is minor diameter one side that is illustrated in reducing steel pipe 22 directly lateral view and the upward view of the pile body 21A of the length L that obtains of the steel pipe 25 of attached additional part.The reducing steel pipe can be the steel pipe that connects with smooth surface between the two ends shown in Fig. 7 (A) or use the conical pipe shown in (B) 29 among the same figure.But, when using the reducing steel pipe of manufactured goods, because size diameter compares D
2/ D
3And length L
1Restricted, so service condition is defined.When connecting with flange, if fore-end be foundry goods then labor content greatly reduce, aspect cost, can bring benefit.
Fig. 8 is the lateral view of band part section of the pile body 31 of length L.The two parts that are divided into front end and replenish, its effect is identical with embodiment 1.Be fixed in the long L that connects excavation sword 33 and blade 34
1, thick T
1The reinforcement plate 36 of upper end of thick walled steel tube 32 of fore-end on, connecting long L
2, thick T
2The steel pipe 35 of additional part.Owing to used thick walled steel tube, made blade also can use slab also can increase support force by enlarged.Owing to have reinforcement plate, when replenishing the part use, couple together also very convenient than fine steel tube.And, if fore-end use foundry goods then labor content greatly reduce, can aspect cost, bring the benefit that reduces, but need use flange in steel pipe one side of replenishing part like this.
Claims (3)
1. a steel pipe pile (21,21A), the steel pipe (22) that will possess the fore-end of excavation sword (23) and spiral blade (24) is connected to the lower end of the steel pipe (25) that replenishes part by welded construction, the steel pipe (25) that should replenish part is extended along the vertical direction and is formed by steel pipe, it is characterized in that
The steel pipe of described fore-end (22) is the reducing steel pipe that enlarges gradually to the below diameter from the top, and the two ends of the steel pipe above-below direction of this fore-end connect and enlarged by smooth surface,
The diameter at the upper end side position in the steel pipe of described fore-end (22) is identical with the diameter of the steel pipe (25) of described additional part, carries out described connection in the mode of steel pipe (25) lower end of attached described additional part.
2. steel pipe pile as claimed in claim 1 is characterized in that, described reducing steel pipe is the pipe arrangement reducing joint.
3. steel pipe pile as claimed in claim 1 or 2 is characterized in that, the upper end side position in the steel pipe of described fore-end is selected in 1.2～2.5 scope with the ratio of the bore at lower end side position.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003101508 | 2003-04-04 | ||
| JP101508/2003 | 2003-04-04 | ||
| JP433350/2003 | 2003-12-26 | ||
| JP2003433350A JP4017593B2 (en) | 2003-02-21 | 2003-12-26 | Steel pipe pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1536171A CN1536171A (en) | 2004-10-13 |
| CN100453741C true CN100453741C (en) | 2009-01-21 |
Family
ID=34379675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100333453A Expired - Fee Related CN100453741C (en) | 2003-04-04 | 2004-04-02 | Block-type steel pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100453741C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI384107B (en) * | 2009-04-10 | 2013-02-01 | Nippon Steel Corp | Steel pipe pile |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011395A (en) * | 2010-11-12 | 2011-04-13 | 新兴河北工程技术有限公司 | Piling tube |
| JP5868636B2 (en) | 2011-08-25 | 2016-02-24 | 新日鉄住金エンジニアリング株式会社 | Steel pipe pile and construction method of steel pipe pile |
| CN102966091A (en) * | 2012-12-05 | 2013-03-13 | 上海八洲建设工程有限公司 | Rotary embedded steel pipe pile and construction method thereof |
| CN108301405B (en) * | 2017-09-29 | 2019-08-16 | 龙元明筑科技有限责任公司 | The connection structure of assembled steel pipe concrete-pile and reinforced beam |
| CN108005062A (en) * | 2018-01-31 | 2018-05-08 | 广西盛虎金属制品有限公司 | Spinning expands head steel-pipe pile |
Citations (8)
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|---|---|---|---|---|
| CN1065307A (en) * | 1992-03-26 | 1992-10-14 | 罗自强 | Static pressure fetch earth piling method and static pressure soil sampler |
| JPH11181766A (en) * | 1997-12-24 | 1999-07-06 | Sekisui House Ltd | Steel pipe pile |
| JP2001164567A (en) * | 1999-12-07 | 2001-06-19 | Tairyo Kenzai:Kk | Steel pipe pile |
| JP2002012947A (en) * | 2000-06-28 | 2002-01-15 | Nkk Corp | Hot dip zinc-plated steel sheet with excellent strength- flangeability and production method for the same |
| JP2002212948A (en) * | 2001-01-22 | 2002-07-31 | Kubota Corp | Foundation pile |
| JP2002348861A (en) * | 2001-05-28 | 2002-12-04 | Daiwa House Ind Co Ltd | Steel component for steel pile |
| JP2002348863A (en) * | 2001-05-28 | 2002-12-04 | Nkk Corp | Screwed pile and execution method therefor |
| JP2003027465A (en) * | 2001-07-19 | 2003-01-29 | Sekisui House Ltd | Edge member for steel pipe pile and steel pipe pile |
-
2004
- 2004-04-02 CN CNB2004100333453A patent/CN100453741C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065307A (en) * | 1992-03-26 | 1992-10-14 | 罗自强 | Static pressure fetch earth piling method and static pressure soil sampler |
| JPH11181766A (en) * | 1997-12-24 | 1999-07-06 | Sekisui House Ltd | Steel pipe pile |
| JP2001164567A (en) * | 1999-12-07 | 2001-06-19 | Tairyo Kenzai:Kk | Steel pipe pile |
| JP2002012947A (en) * | 2000-06-28 | 2002-01-15 | Nkk Corp | Hot dip zinc-plated steel sheet with excellent strength- flangeability and production method for the same |
| JP2002212948A (en) * | 2001-01-22 | 2002-07-31 | Kubota Corp | Foundation pile |
| JP2002348861A (en) * | 2001-05-28 | 2002-12-04 | Daiwa House Ind Co Ltd | Steel component for steel pile |
| JP2002348863A (en) * | 2001-05-28 | 2002-12-04 | Nkk Corp | Screwed pile and execution method therefor |
| JP2003027465A (en) * | 2001-07-19 | 2003-01-29 | Sekisui House Ltd | Edge member for steel pipe pile and steel pipe pile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI384107B (en) * | 2009-04-10 | 2013-02-01 | Nippon Steel Corp | Steel pipe pile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1536171A (en) | 2004-10-13 |
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