CN110952537A - Hoop-type connected PHC tubular pile and hoop size determination method thereof - Google Patents
Hoop-type connected PHC tubular pile and hoop size determination method thereof Download PDFInfo
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- CN110952537A CN110952537A CN201911305619.2A CN201911305619A CN110952537A CN 110952537 A CN110952537 A CN 110952537A CN 201911305619 A CN201911305619 A CN 201911305619A CN 110952537 A CN110952537 A CN 110952537A
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- pile
- hoop
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- pile body
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 abstract description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000011513 prestressed concrete Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
-
- 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
- E02D5/58—Prestressed concrete piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a hoop-type connected PHC pipe pile and a hoop size determination method thereof, wherein the pile splicing point position of the hoop-type connected PHC pipe pile and a pile body are the same in outer diameter, and the hoop is prevented from protruding out of the pile body to form bamboo joints, so that the problems of difficult driving, large disturbance of a soil body around the pile due to the driving, insufficient exertion of damaged frictional resistance of the soil body around the pile and the like in the pile driving process are avoided. The hoop type clamp is adopted for pile splicing, the problem that pile splicing quality is influenced by the technical problem of welding workers is avoided, meanwhile, the size determining method of the clamp is adopted, the clamp can be ensured to adapt to the overall mechanical performance of the PHC tubular pile, and pile splicing quality is ensured.
Description
Technical Field
The invention relates to a PHC tubular pile body, in particular to a hoop-type connected PHC tubular pile and a hoop size determination method thereof.
Background
The prestressed concrete tubular pile has the advantages of high single-pile bearing capacity, low manufacturing cost, high construction speed, high working efficiency, good pile body integrity, strong corrosion resistance, strong adaptability to geological conditions with large changes of bearing layers and the like. The advantages of the prestressed concrete pipe pile make up the defects of the traditional cast-in-place pile in the application of bridge engineering. The prestressed concrete pipe pile is used as a saving type green foundation, is safe and environment-friendly to use, can effectively reduce the influence on the surrounding environment, and can effectively save the using amount of concrete and reinforcing steel bars during manufacturing. The essential steps in the construction process of the prestressed pipe pile are pile splicing, the pile splicing technology and the pile splicing quality directly influence the construction quality and the bearing capacity level of the prestressed pipe pile, and the method has very important significance for selecting the pile splicing technology of the prestressed pipe pile and controlling the pile splicing quality of the prestressed pipe pile. The pile connecting mode adopted in the early construction of the prestressed pipe pile in China is flange type joint pile connecting, but with the wide application of the pipe pile and the continuous improvement and development of the pile connecting technology, the pile connecting mode of flange plate bolt connection is abandoned. In recent years, city construction and port bridge construction in China are getting faster and faster, the technology of large-diameter tubular piles is continuously perfected and applied, and the development requirement of tubular pile application cannot be met in the aspects of construction speed and quality control by a welding pile connecting mode, so that the rapid mechanical joint technology of the tubular piles is urgently needed to be researched and popularized.
The currently applied tubular pile mechanical joints include tubular pile mesh-type quick joints, bowl-shaped joints, U-shaped joints, threaded mechanical quick joints and the like, the mechanical quick joint technologies are tried in some pile foundation engineering and gradually popularized, and different mechanical joints have regional development and application ranges. The common hoop type hoop clamps protrude the pile body to form bamboo joints, and in the pile driving process, the hoop type hoop clamps protrude the pile body and are difficult to drive, the soil body around the pile is greatly disturbed by the pile driving, the damaged soil body around the pile cannot sufficiently exert frictional resistance, and the like.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides the hoop-type connected PHC tubular pile, which can prevent the PHC tubular pile from forming bamboo joints at the pile connecting position on the premise of ensuring the mechanical property.
The invention also aims to provide a method for determining the size of the clamp of the PHC tubular pile.
The technical scheme is as follows: the invention relates to a hoop-type connected PHC tubular pile, which comprises an upper pile body, an upper end head plate connected to the lower end of the upper pile body, a lower end head plate connected to the upper end of the lower pile body and a hoop, wherein the upper end head plate and the lower end head plate are mutually abutted, the hoop is hooped around the peripheries of the upper end head plate and the lower end head plate to form a pile connecting point, and the outer diameter of the pile connecting point is consistent with the outer diameters of the upper pile body and the lower pile body.
Specifically, grooves are formed between the upper end plate and the upper pile body and between the lower end plate and the lower pile body.
The hoop is provided with an annular web plate and flange plates which are arranged at the upper end and the lower end of the web plate and protrude inwards, and the flange plates are matched with the grooves and are clamped in the grooves in a one-to-one correspondence mode.
The height of the web plate is the sum of the thicknesses of the upper end plate and the lower end plate.
The height of the web is determined according to the shear bearing requirement; setting the outer diameters of the upper pile body and the lower pile body as D and the tension force to N1And the shear strength design value of the hoop is tau', and the web height satisfies the following formula:
in the formula, h2Is the web height, t1Is web thickness, t2The length of the flange plate projecting out.
The protruding length of the flange plate is 6-10 mm.
The thickness of the flange plate is determined according to the shearing resistance and bearing requirements; the following equation is satisfied:
in the formula, h1Is the thickness of the flange plate.
The thickness of the web is determined according to tensile load bearing requirements and needs to satisfy the following formula:
in the formula (f)t uThe tensile strength design value of the steel of the hoop is obtained.
The depth of the groove is consistent with the length of the protruding edge plate.
Corresponding to the hoop-type connected PHC tubular pile, the hoop size determining method provided by the invention adopts the technical scheme that the method comprises the following steps:
(1) determining tensile bearing capacity N according to the design requirements of the PHC tubular pile1And determining the protruding length t of the flange plate between 6 mm and 10mm according to actual conditions2；
(2) Determining the thickness h of the flange1；
Preliminarily determining the thickness t of the web according to the diameter D of the pile body and the diameter of the end plate1Is determined by the following formula1Size;
(3) verifying t of web1Size;
thickness t of web according to tensile load-bearing requirements1The following equation is true:
in the formula (f)t uThe tensile strength design value of the steel of the hoop is obtained.
If the requirement is met, the clamping hoop is determined through the process.
Has the advantages that: compared with the prior art, the pile splicing point position of the anchor ear type connected PHC pipe pile and the pile body are the same in outer diameter, and the clamp is prevented from protruding out of the pile body to form bamboo joints, so that the problems that the pile driving is difficult, the soil body around the pile is greatly disturbed by the pile driving, the soil body around the pile is damaged, the frictional resistance is not sufficiently exerted and the like in the pile driving process are solved. The hoop type clamp is adopted for pile splicing, the problem that pile splicing quality is influenced by the technical problem of welding workers is avoided, meanwhile, the size determining method of the clamp is adopted, the clamp can be ensured to adapt to the overall mechanical performance of the PHC tubular pile, and pile splicing quality is ensured.
Drawings
Fig. 1 is a schematic sectional view of a PHC pile according to the present invention;
fig. 2 is a schematic cross-sectional view of a clamp of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the anchor ear type PHC tubular pile comprises an upper pile body 1, an upper end plate 2 connected to the lower end of the upper pile body 1, a lower pile body 3, a lower end plate 4 connected to the upper end of the lower pile body 3, and a clamp 5. The outer diameters of the upper pile body 1 and the lower pile body 3 are consistent, the outer diameters of the upper end plate 2 and the lower end plate 3 are smaller than the outer diameter of the pile body, the upper end plate 2 is abutted against the lower end plate 3, and grooves are formed between the upper end plate 2 and the upper pile body 1 and between the lower end plate 4 and the lower pile body 3.
The clip 5 has an annular web 51 and flange plates 52 provided at upper and lower ends of the web 51 and projecting inward. The height of the web plate 51 is the sum of the thicknesses of the upper end plate 2 and the lower end plate 4, the flange plates 52 are matched with the grooves, the depth of the grooves is consistent with the protruding length of the flange plates 52, the protruding length of the flange plates 52 is selected within 6-10mm according to actual conditions, the width of the grooves is consistent with the thickness of the flange plates 52, and the flange plates 52 are correspondingly clamped in the grooves one by one. The clamp 5 is tightly clamped on the periphery of the upper end plate 2 and the lower end plate 4 to form a pile connecting point, and the outer diameter of the pile connecting point is consistent with the outer diameters of the upper pile body 1 and the lower pile body 3.
Specifically, the height of the web 51 is determined according to the shear bearing requirement; the outer diameters of the upper pile body 1 and the lower pile body 3 are set to be D, and the applied tension is N1The shear strength design value of the band 5 is τ', and the height of the web 51 satisfies the following formula:
in the formula, h2Height, t, of web 511Is the thickness, t, of the web 512The length over which the flange plate 52 projects.
The thickness of the flange plate 52 is determined according to the shear bearing requirements; the following equation is satisfied:
in the formula, h1Is the thickness of the flange plate 52.
The thickness of the web 51 is determined according to the tensile load requirement, and the following formula is required to be satisfied:
in the formula (f)t uThe design value of the tensile strength of the steel of the hoop (5) is obtained by searching the specification.
The embodiment also provides a method for determining the size of the hoop of the PHC tubular pile, which comprises the following steps:
(1) determining tensile bearing capacity N according to the design requirements of the PHC tubular pile1653KN, and according to the actual situation, the protruding length t of the flange plate is determined between 6 mm and 10mm2＝6mm；
(2) Determining the thickness h of the flange1；
According to the difference value of the diameter D of the pile body and the diameter of the end head plate, preliminarily determining the thickness t of the web plate1Size 8mm, byThe thickness h of the flange is determined by the following formula1Size;
determination of h1＝20mm；
(3) Verifying t of web1Size;
thickness t of web according to tensile load-bearing requirements1The following equation is true:
in the formula (f)t uThe tensile strength design value of the steel of the hoop is obtained.
When t is1The sizing of the clamp band by the above process is satisfied.
The channel is then sized according to the dimensions of the clip to ensure that the channel matches the flange plate of the clip. In the process of centrifugally producing the pile, a cushion block is fixed on the template near the end plate, and a groove is automatically formed in the process of centrifugally producing the pile. In the process of hoisting the pile, the clamp is clamped in the grooves of the upper pile and the lower pile, and pile pressing construction can be carried out.
Claims (10)
1. The utility model provides a PHC tubular pile that staple bolt formula is connected, its characterized in that includes upper portion pile body (1), connects upper portion end board (2), lower part pile body (3) at upper portion pile body (1) lower extreme, connects lower part end board (4) and clamp (5) in lower part pile body (3) upper end, upper portion end board (2) with lower part end board (3) butt each other, clamp (5) encircle and tightly encircle and form at the periphery of upper portion end board (2) and lower part end board (4) and connect the stake point, the external diameter that connects the stake point is unanimous with the external diameter of upper portion pile body (1) and lower part pile body (3).
2. The hoop-type connected PHC pile according to claim 1, wherein there are grooves between the upper end plate (2) and the upper pile body (1) and between the lower end plate (4) and the lower pile body (3).
3. The hoop-type connected PHC tubular pile according to claim 2, wherein the hoop (5) is provided with an annular web (51) and flange plates (52) which are arranged at the upper end and the lower end of the web (51) and protrude inwards, the flange plates (52) are matched with the grooves, and are clamped in the grooves in a one-to-one correspondence manner.
4. The hoop-connected PHC pile as claimed in claim 3, wherein the height of the web (51) is the sum of the thicknesses of the upper and lower end plates (2, 4).
5. The hoop-connected PHC pile as claimed in claim 4, wherein the height of the web (51) is determined according to the shear load requirement; the outer diameters of the upper pile body (1) and the lower pile body (3) are set to be D, and the applied tension is N1The shear strength design value of the hoop (5) is tau', and the height of the web (51) satisfies the following formula:
in the formula, h2Is the height, t, of the web (51)1Is the thickness, t, of the web (51)2The length of the flange plate (52) projecting out.
6. The hoop-type connected PHC pile as claimed in any one of claims 3-5, wherein the flange plate (52) protrudes by a length of 6-10 mm.
7. The hoop-connected PHC pile as claimed in claim 5, wherein the thickness of the flange plate (52) is determined according to shear load bearing requirements; the following equation is satisfied:
in the formula, h1Is the thickness of the flange plate (52).
8. The hoop-type connected PHC tubular pile according to claim 5 or 7, wherein the thickness of the web (51) is determined according to the tensile load requirement, and the following formula is satisfied:
in the formula (f)t uThe design value of the tensile strength of the steel of the hoop (5) is shown.
9. The hoop-connected PHC pile as claimed in claim 6, wherein the depth of the groove is the same as the length of the flange plate (52) from which it protrudes.
10. A method for determining the size of a hoop for a hoop-type connected PHC pile according to any one of claims 1 to 9, comprising the steps of:
(1) determining tensile bearing capacity N according to the design requirements of the PHC tubular pile1And determining the protruding length t of the flange plate between 6 mm and 10mm according to actual conditions2；
(2) Determining the thickness h of the flange1；
Preliminarily determining the thickness t of the web according to the diameter D of the pile body and the diameter of the end plate1Is determined by the following formula1Size;
(3) verifying t of web1Size;
thickness t of web according to tensile load-bearing requirements1The following equation is true:
in the formula (f)t uThe tensile strength design value of the steel of the hoop is obtained.
If the requirement is met, the clamping hoop is determined through the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911305619.2A CN110952537B (en) | 2019-12-17 | 2019-12-17 | Hoop-type connected PHC tubular pile and hoop size determination method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911305619.2A CN110952537B (en) | 2019-12-17 | 2019-12-17 | Hoop-type connected PHC tubular pile and hoop size determination method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110952537A true CN110952537A (en) | 2020-04-03 |
| CN110952537B CN110952537B (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911305619.2A Active CN110952537B (en) | 2019-12-17 | 2019-12-17 | Hoop-type connected PHC tubular pile and hoop size determination method thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201924349U (en) * | 2011-02-14 | 2011-08-10 | 江苏建华管桩有限公司 | Anchor ear type connecting clamp for uplift pipe piles |
| CN102966098A (en) * | 2012-10-25 | 2013-03-13 | 国鼎(南通)管桩有限公司 | Fast joint for tubular piles |
| CN203654277U (en) * | 2014-01-06 | 2014-06-18 | 崔杰 | Pile tip connecting device for pre-stressed concrete pipe pile/square pile |
| KR20150004020A (en) * | 2013-07-02 | 2015-01-12 | 박철주 | PHC pile joint and jointing method using the same |
| CN105862855A (en) * | 2016-04-01 | 2016-08-17 | 张永虎 | Precast pile reinforcement structure and durable pile foundation |
| JP2016153579A (en) * | 2015-02-20 | 2016-08-25 | 株式会社クボタ | Steel pipe joint mechanism and connection method |
| CN206377375U (en) * | 2016-08-01 | 2017-08-04 | 杨顺立 | Many valve tapered plane clips and its pipe connections |
| CN107217666A (en) * | 2017-07-11 | 2017-09-29 | 广州市欧伊若科技有限公司 | A kind of new-type composite pile |
| CN208949876U (en) * | 2018-10-12 | 2019-06-07 | 福建金固建材有限公司 | A kind of tubular pile connecting structure |
-
2019
- 2019-12-17 CN CN201911305619.2A patent/CN110952537B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201924349U (en) * | 2011-02-14 | 2011-08-10 | 江苏建华管桩有限公司 | Anchor ear type connecting clamp for uplift pipe piles |
| CN102966098A (en) * | 2012-10-25 | 2013-03-13 | 国鼎(南通)管桩有限公司 | Fast joint for tubular piles |
| KR20150004020A (en) * | 2013-07-02 | 2015-01-12 | 박철주 | PHC pile joint and jointing method using the same |
| CN203654277U (en) * | 2014-01-06 | 2014-06-18 | 崔杰 | Pile tip connecting device for pre-stressed concrete pipe pile/square pile |
| JP2016153579A (en) * | 2015-02-20 | 2016-08-25 | 株式会社クボタ | Steel pipe joint mechanism and connection method |
| CN105862855A (en) * | 2016-04-01 | 2016-08-17 | 张永虎 | Precast pile reinforcement structure and durable pile foundation |
| CN206377375U (en) * | 2016-08-01 | 2017-08-04 | 杨顺立 | Many valve tapered plane clips and its pipe connections |
| CN107217666A (en) * | 2017-07-11 | 2017-09-29 | 广州市欧伊若科技有限公司 | A kind of new-type composite pile |
| CN208949876U (en) * | 2018-10-12 | 2019-06-07 | 福建金固建材有限公司 | A kind of tubular pile connecting structure |
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| CN110952537B (en) | 2021-07-09 |
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