CN111636413A - Pile splicing method for precast concrete square pile - Google Patents
Pile splicing method for precast concrete square pile Download PDFInfo
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- CN111636413A CN111636413A CN202010392786.1A CN202010392786A CN111636413A CN 111636413 A CN111636413 A CN 111636413A CN 202010392786 A CN202010392786 A CN 202010392786A CN 111636413 A CN111636413 A CN 111636413A
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- steel frame
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000011178 precast concrete Substances 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 104
- 239000010959 steel Substances 0.000 claims abstract description 104
- 238000003466 welding Methods 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 240000004282 Grewia occidentalis Species 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 229910000746 Structural steel Inorganic materials 0.000 claims 2
- 235000000396 iron Nutrition 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011150 reinforced concrete Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening 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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- 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
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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
A pile splicing method of a precast concrete square pile is characterized by comprising the following steps: a. b, prefabricating a square pile body pile cap, b, prefabricating a square pile angle steel frame, c, pressing a lower pile into the ground, d, sleeving the prefabricated angle steel frame on the pile cap at the top of the pile body pressed into the ground, e, after the positioning of the angle steel frame on the lower pile cap is completed, hoisting an upper pile to be connected with a lower pile, aligning the upper pile cap to the lower pile cap and slowly inserting the upper pile cap into the angle steel frame downwards until the top surfaces of the upper pile cap and the lower pile cap are completely combined, then adjusting the central verticality of the upper pile body and the lower pile body, welding and positioning the upper pile cap and the angle steel frame after the upper pile cap and the lower pile body are positioned on the same vertical line, and then carrying out the next step of integral welding work to complete the pile connecting step of the prefabricated concrete square pile. The angle steel frame has the advantages of simple structure and convenient manufacture, and compared with the traditional one-by-one welding method for single angle steel, the invention can quickly and accurately position the pile end, improve the welding quality and shorten the construction period.
Description
Technical Field
The invention relates to a pile splicing method, in particular to a pile splicing method of a precast concrete square pile.
Background
The prefabricated square pile is a long concrete prefabricated component manufactured by adopting a pretensioning method prestressing process, and the current commonly used pile splicing method is welding pile splicing.
Chinese patent CN103541350 discloses a reinforced concrete square pile splicing method in 2014, month 1 and 29, comprising the following steps: removing impurities in a welding range before pile splicing; pile aligning: the central deviation of the upper pile section and the lower pile section of the reinforced concrete square pile is less than or equal to 5 mm; the reinforced concrete square pile is symmetrically segmented and spliced by electric welding; and during pile splicing, the four corners of the reinforced concrete square pile are firmly spot-welded. The reinforced concrete square pile utilizing the technical scheme is connected, although the condition of pile connection fracture cannot occur, the upper pile section and the lower pile section of the concrete square pile are difficult to position in the welding pile connection process, and the pile body is not positioned on a uniform vertical center line to generate quality hidden troubles.
Therefore, the known welding pile-splicing method of the concrete square pile has various inconveniences and problems.
Disclosure of Invention
The invention aims to provide a safe and reliable pile splicing method for a precast concrete square pile.
In order to achieve the purpose, the technical solution of the invention is as follows:
a pile splicing method of a precast concrete square pile is characterized by comprising the following steps:
a. pile cap of prefabricated square pile body
According to the square side length of the cross section of the square pile body, a pile cap matched with the square pile body is manufactured, so that the side length of the square pile cap is 15mm smaller than that of the pile, the pile cap is made of Q235B, and the height is more than or equal to 240 mm;
b. prefabricated square pile angle steel frame
Four 1 st angle steels are used as the four-corner straight rods of the angle steel frame, four 2 nd angle steels are used as the connecting rods of the adjacent 1 st angle steels, the 1 st angle steels and the 2 nd angle steels are mutually vertically and fixedly welded to form the square pile angle steel frame for prefabricating the concrete square pile, and when the square pile angle steel frame is arranged at the top end of the square pile, the 2 nd angle steels at the lower ends of the square pile angle steel frame can be placed at the top end of the square pile;
c. pressing the lower section of pile into the ground, and enabling the pile cap to be about 1 m away from the ground so as to facilitate pile splicing operation;
d. sleeving a prefabricated angle steel frame on a pile cap at the top of a pile body pressed into the ground, performing pre-positioning connection on the lower end of angle steel at four corners of the angle steel frame and the steel cap by spot welding, adjusting until the vertical surfaces of the four angle steel and the vertical surfaces of the four corners of the steel cap are parallel and have symmetrical intervals, and properly reinforcing a positioning welding point after the correct positioning is confirmed so as to prevent the deviation or falling off phenomenon of the angle steel frame when the upper pile cap is inserted;
e. after the positioning of the angle steel frame on the lower pile cap is completed, the upper pile and the lower pile are lifted to be connected, the upper pile cap is aligned to the lower pile cap and slowly inserted into the angle steel frame downwards until the top surfaces of the upper pile cap and the lower pile cap are completely combined, then the central verticality of the upper pile body and the lower pile body is adjusted, the upper pile cap and the angle steel frame are welded and positioned after being positioned on the same vertical line, and then the next step of integral welding work can be carried out to complete the pile connecting step of the precast concrete square pile.
The pile splicing method of the precast concrete square pile can be further realized by adopting the following technical measures.
In the method, the length of the 1 st angle steel is not less than 380mm, and the specification is not less than 63 x 6 mm.
In the method, the specification of the 2 nd angle steel is more than or equal to 40 × 4 mm.
The method, wherein the distance between the two 1 st angle steels is 224 mm.
The method, wherein the distance from the top end of the 1 st angle to the 2 nd angle is equal to 240 mm.
In the method, the two long sides of each angle steel of the angle steel frame are all fully welded with the seam of the pile cap.
After the technical scheme is adopted, the pile splicing method of the precast concrete square pile has the following advantages:
1. the angle steel frame has simple structure and convenient manufacture;
2. the construction quality is safe and reliable, and compared with the traditional construction method for welding single angle steel one by one, the pile end is quickly and accurately positioned;
3. the welding quality is improved, the construction period is shortened, and the engineering cost is reduced.
Drawings
Fig. 1 is a schematic view of a pile extension structure of a precast concrete square pile according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural view of a prefabricated square pile angle steel frame according to an embodiment of the invention;
FIG. 4 is a perspective view of a prefabricated square pile angle steel frame according to an embodiment of the present invention;
fig. 5 is an elevation view of the prefabricated square pile angle steel frame installed on the lower pile cap according to the embodiment of the invention.
In the figure: 1 upper pile section, 2 pile caps, 3 st angle steel, 4 nd angle steel, 5 lower pile sections, 6 st angle steel and pile cap top weld joint, 7 st angle steel and pile cap side weld joint, 8 st angle steel and pile cap bottom weld joint.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The pile splicing method of the precast concrete square pile comprises the following steps of:
a. and (4) prefabricating a pile cap of the square pile body.
Referring to fig. 1 and 2, fig. 1 is a schematic view illustrating a pile extension structure of a precast concrete square pile according to an embodiment of the present invention, and fig. 2 is a sectional view of a-a of fig. 1. As shown in the figure, the precast concrete square pile is manufactured into a pile cap matched with the precast concrete square pile according to the design and the square side length of the cross section of the square pile body, so that the side length of the square pile cap is 15mm smaller than the side length of the square pile, the pile cap is made of Q235B, and the height of the pile cap is 240 mm.
b. And (5) prefabricating a square pile angle steel frame.
Fig. 3 is a schematic structural view of a prefabricated square pile angle steel frame according to an embodiment of the invention, and fig. 4 is a schematic perspective view of the prefabricated square pile angle steel frame according to the embodiment of the invention. Four 1 st angle steels with the length of 380mm and the specification of 63 x 6mm are used as four corner straight rods of the angle steel frame, four 2 nd angle steels with the specification of 40 x 4mm are used as connecting rods of adjacent 1 st angle steels 3, the 1 st angle steels and the 2 nd angle steels are mutually perpendicular and fixedly welded, the distance between the two 1 st angle steels is 224mm, and the distance from the top ends of the 1 st angle steels to the 2 nd angle steels is 240mm, so that the square pile angle steel frame for prefabricating the concrete square pile is achieved, and the 2 nd angle steels at the lower ends of the square pile angle steel frame can be placed at the top ends of the square piles when the square pile angle steel frame is placed at the top ends of the square piles.
c. The lower section of pile is pressed into the ground, and the pile cap is about 1 m away from the ground, so that the pile splicing operation is convenient. Fig. 5 is an elevation view of the prefabricated square pile angle steel frame installed on the lower pile cap according to the embodiment of the invention.
d. The prefabricated angle steel frame is sleeved on the top pile cap of the pile body pressed into the ground, the lower end of the angle steel at the four corners of the angle steel frame is in pre-positioning connection with the steel cap in a spot welding mode, the four angle steel vertical surfaces are adjusted to be parallel to the four corner vertical surfaces of the steel cap, the distances between the four angle steel vertical surfaces and the four corner vertical surfaces of the steel cap are symmetrical, and the welding points can be properly reinforced after the correct positioning is confirmed, so that the phenomenon that the angle steel frame deviates or falls off when the upper pile cap is inserted is avoided.
e. After the positioning of the angle steel frame on the lower pile cap is completed, the upper pile 1 and the lower pile are lifted to be connected, the upper pile cap 2 is aligned to the lower pile 5 cap and slowly inserted into the angle steel frame downwards until the top surfaces of the upper pile cap and the lower pile cap are completely combined, then the central verticality of the upper pile body and the lower pile body is adjusted, the upper pile cap and the angle steel frame are welded and positioned after being positioned on the same vertical line, then the next step of integral welding work can be carried out, and the pile connecting step of the precast concrete square pile is completed.
According to the installation and welding requirements of the prefabricated square pile angle steel frame, the two long sides of each angle steel of the angle steel frame and the joint of the pile cap are all welded and fixed in a full mode, wherein the joint is shown as a 1 st angle steel and top end welding joint 6 of the pile cap, a 1 st angle steel and side surface welding joint 7 of the pile cap and a 1 st angle steel and bottom end welding joint 8 of the pile cap.
Compared with the traditional construction method for welding single angle steel one by one, the pile splicing method for the precast concrete square pile has the advantages of being capable of quickly and accurately positioning the pile end, improving the welding quality, shortening the construction period and the like.
The pile splicing method for the precast concrete square pile is applied to relevant projects such as S330 highway engineering in leaf county, has obvious effect, and obtains sufficient certainty of construction units, supervision units and construction units.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (6)
1. A pile splicing method of a precast concrete square pile is characterized by comprising the following steps:
a. pile cap of prefabricated square pile body
According to the square side length of the cross section of the square pile body, a pile cap matched with the square pile body is manufactured, so that the side length of the square pile cap is 15mm smaller than that of the pile, the pile cap is made of Q235B, and the height is more than or equal to 240 mm;
b. prefabricated square pile angle steel frame
Four 1 st angle steels are used as the four-corner straight rods of the angle steel frame, four 2 nd angle steels are used as the connecting rods of the adjacent 1 st angle steels, the 1 st angle steels and the 2 nd angle steels are mutually vertically and fixedly welded to form the square pile angle steel frame for prefabricating the concrete square pile, and when the square pile angle steel frame is arranged at the top end of the square pile, the 2 nd angle steels at the lower ends of the square pile angle steel frame can be placed at the top end of the square pile;
c. pressing the lower section of pile into the ground, and enabling the pile cap to be about 1 m away from the ground so as to facilitate pile splicing operation;
d. sleeving a prefabricated angle steel frame on a pile cap at the top of a pile body pressed into the ground, performing pre-positioning connection on the lower end of angle steel at four corners of the angle steel frame and the steel cap by spot welding, adjusting until the vertical surfaces of the four angle steel and the vertical surfaces of the four corners of the steel cap are parallel and have symmetrical intervals, and properly reinforcing a positioning welding point after the correct positioning is confirmed so as to prevent the deviation or falling off phenomenon of the angle steel frame when the upper pile cap is inserted;
e. after the positioning of the angle steel frame on the lower pile cap is completed, the upper pile and the lower pile are lifted to be connected, the upper pile cap is aligned to the lower pile cap and slowly inserted into the angle steel frame downwards until the top surfaces of the upper pile cap and the lower pile cap are completely combined, then the central verticality of the upper pile body and the lower pile body is adjusted, the upper pile cap and the angle steel frame are welded and positioned after being positioned on the same vertical line, and then the next step of integral welding work can be carried out to complete the pile connecting step of the precast concrete square pile.
2. A pile extension method of a precast concrete square pile according to claim 1, wherein the length of the 1 st angle steel is not less than 380mm, and the specification is not less than 63 x 6 mm.
3. A pile extension method of a precast concrete square pile according to claim 1, wherein the specification of the 2 nd angle steel is 40 x 4mm or more.
4. A pile extension method of a precast concrete square pile according to claim 1, wherein the distance between the two 1 st angle irons is 224 mm.
5. A pile extension method of a precast concrete square pile according to claim 1, wherein the distance from the top end of the 1 st angle iron to the 2 nd angle iron is 240 mm.
6. A pile extension method of a precast concrete square pile according to claim 1, wherein the two long sides of each angle steel of the angle steel frame are all fully welded to the joint of the pile cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392786.1A CN111636413A (en) | 2020-05-11 | 2020-05-11 | Pile splicing method for precast concrete square pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392786.1A CN111636413A (en) | 2020-05-11 | 2020-05-11 | Pile splicing method for precast concrete square pile |
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| Publication Number | Publication Date |
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| CN111636413A true CN111636413A (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010392786.1A Pending CN111636413A (en) | 2020-05-11 | 2020-05-11 | Pile splicing method for precast concrete square pile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047279A (en) * | 2021-05-17 | 2021-06-29 | 广州城建职业学院 | Quick pile driving equipment for building engineering construction |
| US11319689B1 (en) * | 2021-09-30 | 2022-05-03 | The Florida International University Board Of Trustees | NSMB pile splice system for precast concrete piles |
| CN117966887A (en) * | 2024-03-28 | 2024-05-03 | 中国铁路设计集团有限公司 | Assembled beam column adjustable support node and installation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861280Y (en) * | 2005-12-19 | 2007-01-24 | 上海市第二建筑有限公司 | Inverse engineering prefabricated pile connecting structure |
| CN202745039U (en) * | 2012-08-01 | 2013-02-20 | 天津建城基业集团有限公司 | Lath type connector connecting solid square pile |
| CN203613532U (en) * | 2013-12-12 | 2014-05-28 | 本溪银龙预应力材料有限公司 | Square pile connector |
| CN205188954U (en) * | 2015-12-15 | 2016-04-27 | 山东科技大学 | Novel reinforced concrete prefabrication side stake pile extension structure |
| CN206346192U (en) * | 2016-12-09 | 2017-07-21 | 中赟国际工程股份有限公司 | A kind of Prefabricated Reinforced Concrete Square Pile attachment structure |
| CN210049234U (en) * | 2019-03-15 | 2020-02-11 | 中建一局集团第五建筑有限公司 | Static pressure square pile splicing and reinforcing structure |
-
2020
- 2020-05-11 CN CN202010392786.1A patent/CN111636413A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861280Y (en) * | 2005-12-19 | 2007-01-24 | 上海市第二建筑有限公司 | Inverse engineering prefabricated pile connecting structure |
| CN202745039U (en) * | 2012-08-01 | 2013-02-20 | 天津建城基业集团有限公司 | Lath type connector connecting solid square pile |
| CN203613532U (en) * | 2013-12-12 | 2014-05-28 | 本溪银龙预应力材料有限公司 | Square pile connector |
| CN205188954U (en) * | 2015-12-15 | 2016-04-27 | 山东科技大学 | Novel reinforced concrete prefabrication side stake pile extension structure |
| CN206346192U (en) * | 2016-12-09 | 2017-07-21 | 中赟国际工程股份有限公司 | A kind of Prefabricated Reinforced Concrete Square Pile attachment structure |
| CN210049234U (en) * | 2019-03-15 | 2020-02-11 | 中建一局集团第五建筑有限公司 | Static pressure square pile splicing and reinforcing structure |
Non-Patent Citations (2)
| Title |
|---|
| 史康立: "《建筑施工技术》", 31 January 2005, 黄河水利出版社 * |
| 朱艳丽: "《基础工程施工 第2版》", 31 March 2016, 北京理工大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047279A (en) * | 2021-05-17 | 2021-06-29 | 广州城建职业学院 | Quick pile driving equipment for building engineering construction |
| US11319689B1 (en) * | 2021-09-30 | 2022-05-03 | The Florida International University Board Of Trustees | NSMB pile splice system for precast concrete piles |
| CN117966887A (en) * | 2024-03-28 | 2024-05-03 | 中国铁路设计集团有限公司 | Assembled beam column adjustable support node and installation method |
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Application publication date: 20200908 |