CN114293583A - Detachable prefabricated pile platform integrated steel bearing platform installation construction method - Google Patents
Detachable prefabricated pile platform integrated steel bearing platform installation construction method Download PDFInfo
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- CN114293583A CN114293583A CN202111554416.4A CN202111554416A CN114293583A CN 114293583 A CN114293583 A CN 114293583A CN 202111554416 A CN202111554416 A CN 202111554416A CN 114293583 A CN114293583 A CN 114293583A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 222
- 239000010959 steel Substances 0.000 title claims abstract description 222
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 title description 3
- 238000003466 welding Methods 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
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Abstract
The utility model discloses a construction method of a detachable pile-platform integrated steel bearing platform, which comprises the following steps: the prefabricated support comprises four steel pipe rings, a horizontal support and a corner support; placing the support on the ground, driving a steel pipe pile underground along the steel pipe ring, welding a reinforced pipe on the outer wall of the topmost part of the pipe pile, and arranging a reserved hole at the overlapping part of the reinforced pipe and the steel pipe pile; the connecting pipe with the preformed hole welded under the steel pipe column is inserted into the top of the steel pipe pile: overlapping the preformed holes of the steel pipe pile and the connecting pipe, inserting a pin shaft, and fixing by using a pin clamping ring; driving the steel pipe pile into the ground; driving four steel pipe piles and steel pipe columns one by one, wherein the tops of the steel pipe piles are at the same position; a plurality of inter-column supports are arranged along with the excavation, plugging steel plates are arranged at the upper parts of the columns, and anchoring nails are arranged at the inner sides of the columns; inserting anchor bars into the columns; installing and fixing tower crane footing; pouring concrete and installing a tower crane; and after the use is finished, disassembling the tower and pulling out the steel pipe pile and the column. The method has low construction cost and does not influence the layout of the underground structure.
Description
Technical Field
The utility model relates to an assembled component, in particular to a construction method of a detachable prefabricated pile platform integrated steel bearing platform.
Background
With the increasing shortage of building land, the development of building space to high altitude and underground becomes a necessary trend. People can easily find that the underground space around each newly-built high-rise building and among the buildings is gradually occupied by the underground engineering such as large-area underground garages, underground civil air guards, equipment rooms and the like which are connected into a whole, and the appearance of the building form obviously relieves the pressure of the ground space, improves the building function and the living and living environment of people and has obvious effect.
In the traditional building engineering design, the main construction process of the tower crane foundation comprises the steps of firstly constructing a pile foundation according to the field condition, then excavating a foundation pit, excavating a foundation cushion layer after the foundation pit is excavated to the designed foundation bottom elevation, cutting a pile, constructing a waterproof and waterproof protective layer, finally installing a template and a steel bar of a bearing platform, and pouring concrete in time, wherein the construction progress is slow, and the required labor cost, the material cost and the use cost of construction machinery are relatively high.
The Chinese patent with the application number of 201420151415.4 discloses a bearing-platform-free lattice tower crane foundation device capable of passing through a basement, which comprises steel lattice columns, wherein the upper ends of the four steel lattice columns are respectively connected with four corner columns of a tower crane tower body standard section, and the lower ends of the four steel lattice columns penetrate through the basement and are anchored in four reinforced concrete cast-in-place piles below a basement bottom plate; lacing bars are arranged between the adjacent steel lattice columns, and a horizontal cross brace is arranged between the two diagonally arranged steel lattice columns. This utility model discloses on the nonstandard festival that four steel lattice columns are constituteed directly transmits reinforced concrete pile foundation, must construct earlier pile foundation, is not suitable for the nervous tower crane erection construction of time limit for a project, also does not benefit to the form of current assembly ization construction, and tower crane stake and steel lattice column homogeneous drop-in once, and resources are wasted, and the reinforced concrete bored concrete pile who buries underground has adverse effect to the underground environment, is unfavorable for environmental protection and resource reuse.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides the construction method of the detachable pile platform integrated steel bearing platform, which has the advantages of low construction cost, no influence on underground structure layout, construction speed acceleration, convenience, rapidness, safety, reliability, environmental protection, material saving and high construction efficiency.
The utility model discloses a construction method of a detachable pile-platform integrated steel bearing platform, which comprises the following steps:
the method comprises the following steps that firstly, a support is prefabricated, the support comprises steel pipe rings which are respectively arranged at four corner points of a rectangular structure, two adjacent steel pipe rings are fixedly connected through a horizontal support arranged along the horizontal direction, and a cross diagonal support is connected between the steel pipe rings at the diagonal positions of the rectangular structure formed by the four steel pipe rings;
placing the support on the ground according to a set position, then sequentially driving multiple sections of steel pipe piles into the ground along a steel pipe ring until the top of the uppermost section of steel pipe pile is 90-100 cm higher than the top surface of the steel pipe ring, annularly sleeving and welding a reinforcing pipe on the outer wall of the top of the uppermost section of steel pipe pile, and forming first reserved holes in the radial direction of the reinforcing pipe and the uppermost section of steel pipe pile;
step three, the steel pipe column is placed downwards, the inner wall of the lower part of the steel pipe column is circumferentially welded and connected with the outer wall of the upper part of the connecting steel pipe, the connecting steel pipe extends out of the lower part of the steel pipe column and is provided with a second preformed hole along the radial direction of the steel pipe column:
adjusting the steel pipe column to enable the axes of the first preformed hole and the second preformed hole to coincide, enabling a steel pin shaft to penetrate through the first preformed hole and the second preformed hole, installing a steel pin snap ring in a fixing groove formed in the steel pin shaft, and fixing the steel pin shaft, wherein the fixing groove is formed in the annular shaft direction of the steel pin shaft penetrating through the first preformed hole and the second preformed hole;
driving the steel pipe column downwards into the ground along the steel pipe ring, and enabling the top of the steel pipe column to be 20-25 cm away from the top of the steel pipe ring;
step six, repeating the step two to the step five, and driving the steel pipe pile and the steel pipe column along each steel pipe ring; simultaneously ensuring that the top of each steel pipe column is at the same horizontal position;
step seven, performing foundation excavation on the periphery of the support until the designed elevation position below the ground, and then arranging a plurality of connecting horizontal supports and inclined supports between every two adjacent steel pipe columns; welding a closed steel plate at the inner upper part of each steel pipe column respectively, and welding an anchor nail on the inner wall of the steel pipe column above the closed steel plate;
step eight, inserting a plurality of steel bars into the upper part in each steel pipe column respectively and welding and connecting the bottom of each steel bar with the closed steel plate;
step nine, inserting four ground feet of the tower crane section into the steel pipe column respectively, and welding and fixing the four ground feet with the top of the steel pipe column and reinforcing steel bars by adopting angle steels;
tenthly, pouring C40 micro-expansion fiber concrete in the steel pipe column, and installing a tower crane when the strength of the concrete reaches 80%; after the tower crane is installed and used, firstly dismantling a tower crane main structure of a tower crane section above four ground feet, then dismantling a support on the steel pipe column, adopting a pile extractor to sequentially extract the four steel pipe columns and the steel pipe pile, and waiting for next use after cleaning and maintenance.
The method is suitable for the working condition that the engineering field is limited, the foundation is a deep foundation pit, the construction progress can be accelerated, the comprehensive consideration and analysis are carried out according to the site construction conditions on the premise of ensuring safety and reliability, the principle that the tower crane is convenient to install and disassemble is fully utilized, and the detachable pile-platform integrated steel bearing platform with the tower crane foundation capable of being recycled is adopted.
Drawings
FIG. 1 is a schematic top view of the construction of a detachable pile-platform integrated steel bearing platform in the process of pressing a steel pipe pile (column) after a support is positioned according to the construction method of the utility model;
FIG. 2 is a schematic elevation view of a steel pipe column, horizontal supports and diagonal supports used in the construction method of the detachable pile-platform integrated steel bearing platform of the present invention;
FIG. 3 is a sectional elevation view of a steel pipe column and a steel pipe pile fixedly connected by a connecting steel pipe and a steel pin shaft, which are adopted in the construction method of the detachable pile-platform integrated steel bearing platform of the present invention;
FIG. 4 is a schematic diagram of a steel pin shaft in the construction method of the detachable pile-platform integrated steel bearing platform of the present invention;
FIG. 5 is a plan view of a steel pin clamp ring fixed on a steel pin shaft used in the construction method of the detachable pile-platform integrated steel bearing platform of the present invention;
fig. 6 is a cross-sectional view of a steel pin snap ring secured to a steel pin shaft in the configuration shown in fig. 5.
Detailed Description
The utility model is described in detail below with reference to the following figures and specific examples:
the utility model discloses a construction method of a detachable pile platform integrated steel bearing platform, which comprises the following steps:
firstly, prefabricating a support, wherein the support comprises steel pipe rings 1 which are respectively arranged at four corner points of a rectangular structure, two adjacent steel pipe rings 1 are fixedly connected through a horizontal support 3 arranged along the horizontal direction, and a cross diagonal support 5 is connected between the steel pipe rings 1 at the diagonal positions of the rectangular structure formed by the four steel pipe rings 1 in a surrounding manner;
placing the support on the ground according to a set position, then sequentially driving multiple sections of steel pipe piles into the ground along one steel pipe ring 1 until the top of the uppermost steel pipe pile is 90-100 cm higher than the top of the steel pipe ring 1, annularly sleeving and welding a reinforcing pipe 11 on the outer wall of the top of the uppermost steel pipe pile, and forming first reserved holes along the radial direction of the reinforcing pipe 11 and the uppermost steel pipe pile;
preferably, a conical pile tip is arranged at the root of the lowest section of the steel pipe pile. The inner diameter of each steel pipe ring 1 can be 2cm larger than the outer diameter of the steel pipe pile.
Step three, the steel pipe column 7 is lowered, the inner wall of the lower part of the steel pipe column 7 is circumferentially welded and connected with the outer wall of the upper part of the connecting steel pipe 8, and a second preformed hole is formed in the connecting steel pipe 8, extends out of the lower part of the steel pipe column 7, and is formed in the radial direction of the steel pipe column 7:
and step four, adjusting the steel pipe column 7 to enable the axes of the first preformed hole and the second preformed hole to coincide, enabling the steel pin shaft 9 to penetrate through the first preformed hole and the second preformed hole, installing a steel pin snap ring 14 in a fixing groove 13 formed in the steel pin shaft 9, and fixing the steel pin shaft 9. The fixing groove 13 is arranged along the ring axis direction of the steel pin shaft 9 penetrating through the first preformed hole and the second preformed hole.
Preferably, a tapered enlarged end 12 with a diameter larger than that of the steel pin body is arranged on one side of the steel pin, and the shape of the first preformed hole in the reinforcing pipe 11 is matched with the shape of the contact part of the tapered enlarged end 12.
The fixing groove 13 is formed in the outer wall of the other side of the steel pin shaft, the bottom wall of the fixing groove 13 is arc-shaped, the side wall close to the outer end of the steel pin snap ring is a plane which is radially arranged along the steel pin snap ring, the steel pin snap ring 14 is annular with an opening and is sleeved on the fixing groove 13, the shape of the contact surface of the steel pin snap ring 14 and the fixing groove 13 is matched with the shape of the fixing groove 13, and the upper steel pipe column and the lower steel pipe column cannot slip due to pile pressing, pile pulling and tower crane normal use;
preferably, the length of the two ends of the steel pin shaft exposed outside the reinforcing pipe 11 after the fixing is finished is not more than 5mm, so that the resistance of the steel pipe pile when the steel pipe pile is pressed into or pulled out of the ground is reduced while the installation and the fixation of the steel pin shaft 9 are met;
fifthly, driving the steel pipe column 7 downwards into the ground along the steel pipe ring 1, and enabling the top of the steel pipe column 7 to be 20-25 cm away from the top of the steel pipe ring 1;
step six, repeating the step two to the step five, and driving the steel pipe pile 10 and the steel pipe column 7 along each steel pipe ring 1; meanwhile, the top of each steel pipe column 7 is ensured to be at the same horizontal position;
step seven, performing foundation excavation on the periphery of the support until the designed elevation position below the ground, and then arranging a plurality of connecting horizontal supports 4 and inclined supports 6 between every two adjacent steel pipe columns 7; welding a closed steel plate at the inner upper part of each steel pipe column respectively, and welding an anchor nail on the inner wall of the steel pipe column above the closed steel plate;
in one embodiment of the utility model, the closed steel plate is welded at a position 250cm away from the top of the steel pipe column.
And step eight, inserting a plurality of steel bars into the inner upper part of each steel pipe column 7 respectively and welding and connecting the bottom of each steel bar with the closed steel plate.
And step nine, inserting four ground feet of the tower crane section into the steel pipe column respectively, and welding and fixing the four ground feet with the top of the steel pipe column and the steel bars by adopting angle steels.
Step ten, pouring C40 micro-expansion fiber concrete in the steel pipe column, and installing a tower crane when the strength of the concrete reaches 80%. After the tower crane is installed and used, firstly dismantling a tower crane main structure of a tower crane section above four ground feet, then dismantling a support on the steel pipe column, adopting a pile extractor to sequentially extract the four steel pipe columns and the steel pipe pile, and waiting for next use after cleaning and maintenance.
Claims (6)
1. The construction method of the detachable pile-platform integrated steel bearing platform is characterized by comprising the following steps:
the method comprises the following steps that firstly, a support is prefabricated, the support comprises steel pipe rings which are respectively arranged at four corner points of a rectangular structure, two adjacent steel pipe rings are fixedly connected through a horizontal support arranged along the horizontal direction, and a cross diagonal support is connected between the steel pipe rings at the diagonal positions of the rectangular structure formed by the four steel pipe rings;
placing the support on the ground according to a set position, then sequentially driving multiple sections of steel pipe piles into the ground along a steel pipe ring until the top of the uppermost section of steel pipe pile is 90-100 cm higher than the top surface of the steel pipe ring, annularly sleeving and welding a reinforcing pipe on the outer wall of the top of the uppermost section of steel pipe pile, and forming first reserved holes in the radial direction of the reinforcing pipe and the uppermost section of steel pipe pile;
step three, the steel pipe column is placed downwards, the inner wall of the lower part of the steel pipe column is circumferentially welded and connected with the outer wall of the upper part of the connecting steel pipe, the connecting steel pipe extends out of the lower part of the steel pipe column and is provided with a second preformed hole along the radial direction of the steel pipe column:
adjusting the steel pipe column to enable the axes of the first preformed hole and the second preformed hole to coincide, enabling a steel pin shaft to penetrate through the first preformed hole and the second preformed hole, installing a steel pin snap ring in a fixing groove formed in the steel pin shaft, and fixing the steel pin shaft, wherein the fixing groove is formed in the annular shaft direction of the steel pin shaft penetrating through the first preformed hole and the second preformed hole;
driving the steel pipe column downwards into the ground along the steel pipe ring, and enabling the top of the steel pipe column to be 20-25 cm away from the top of the steel pipe ring;
step six, repeating the step two to the step five, and driving the steel pipe pile and the steel pipe column along each steel pipe ring; simultaneously ensuring that the top of each steel pipe column is at the same horizontal position;
step seven, performing foundation excavation on the periphery of the support until the designed elevation position below the ground, and then arranging a plurality of connecting horizontal supports and inclined supports between every two adjacent steel pipe columns; welding a closed steel plate at the inner upper part of each steel pipe column respectively, and welding an anchor nail on the inner wall of the steel pipe column above the closed steel plate;
step eight, inserting a plurality of steel bars into the upper part in each steel pipe column respectively and welding and connecting the bottom of each steel bar with the closed steel plate;
step nine, inserting four ground feet of the tower crane section into the steel pipe column respectively, and welding and fixing the four ground feet with the top of the steel pipe column and reinforcing steel bars by adopting angle steels;
tenthly, pouring C40 micro-expansion fiber concrete in the steel pipe column, and installing a tower crane when the strength of the concrete reaches 80%; after the tower crane is installed and used, firstly dismantling a tower crane main structure of a tower crane section above four ground feet, then dismantling a support on the steel pipe column, adopting a pile extractor to sequentially extract the four steel pipe columns and the steel pipe pile, and waiting for next use after cleaning and maintenance.
2. The construction method of the detachable pile-platform integrated steel bearing platform according to claim 1, characterized in that: the fixed recess open steel round pin axle opposite side outer wall on, the diapire of fixed recess be the arc and be close to the lateral wall of steel round pin snap ring outer end for along the plane of steel round pin snap ring radial setting, steel round pin snap ring for having open-ended annular and ring cover on fixed recess, the shape of steel round pin snap ring and fixed recess contact surface coincide with fixed recess shape.
3. The detachable pile-platform integrated steel bearing platform construction method according to claim 1 or 2, characterized in that: one side of the steel pin shaft is provided with a conical enlarged end with the diameter larger than that of the steel pin shaft main body, and the shape of the first preformed hole in the reinforcing pipe is matched with the shape of the contact part of the conical enlarged end.
4. The detachable pile-platform integrated steel bearing platform construction method according to claim 3, wherein: and after the steel pin shaft is fixed, the two ends of the steel pin shaft are exposed out of the outer side of the reinforcing pipe and are not more than 5 mm.
5. The construction method of the detachable pile-platform integrated steel bearing platform according to claim 4, characterized in that: the root of the lowest section of the steel pipe pile is provided with a conical pile tip, and the inner diameter of each steel pipe ring is 2cm larger than the outer diameter of the steel pipe pile.
6. The construction method of the detachable pile-platform integrated steel bearing platform according to claim 5, wherein the closed steel plate is welded at a position 250cm away from the top of the steel pipe column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111554416.4A CN114293583A (en) | 2021-12-17 | 2021-12-17 | Detachable prefabricated pile platform integrated steel bearing platform installation construction method |
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| CN202111554416.4A CN114293583A (en) | 2021-12-17 | 2021-12-17 | Detachable prefabricated pile platform integrated steel bearing platform installation construction method |
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| CN114293583A true CN114293583A (en) | 2022-04-08 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201053123Y (en) * | 2007-06-28 | 2008-04-30 | 宏润建设集团股份有限公司 | Deep foundation ditch tower crane platform base frame |
| CN102587407A (en) * | 2012-03-23 | 2012-07-18 | 舜元建设(集团)有限公司 | Construction method for tower crane foundation without bearing platform in deep foundation pit |
| CN105239594A (en) * | 2015-10-30 | 2016-01-13 | 江苏中大建设集团有限公司 | Prestressed pipe pile upright |
| CN107964976A (en) * | 2017-11-24 | 2018-04-27 | 常州第建筑集团有限公司 | Steel pipe-conversion steel platform tower crane top-down construction method |
| RU197237U1 (en) * | 2020-02-03 | 2020-04-14 | Николай Валентинович МЕДВЕДЕВ | FOUNDATION ANCHOR FASTENING OF THE TOWER CRANE |
| CN212248224U (en) * | 2020-01-10 | 2020-12-29 | 吕恒柱 | Prefabricated hollow anti-floating pile is with integration bolt formula anti-floating connection structure |
| CN213448403U (en) * | 2020-09-27 | 2021-06-15 | 中铁三局集团有限公司 | Platform device for accurately positioning and quickly constructing underwater support steel pipe pile |
-
2021
- 2021-12-17 CN CN202111554416.4A patent/CN114293583A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201053123Y (en) * | 2007-06-28 | 2008-04-30 | 宏润建设集团股份有限公司 | Deep foundation ditch tower crane platform base frame |
| CN102587407A (en) * | 2012-03-23 | 2012-07-18 | 舜元建设(集团)有限公司 | Construction method for tower crane foundation without bearing platform in deep foundation pit |
| CN105239594A (en) * | 2015-10-30 | 2016-01-13 | 江苏中大建设集团有限公司 | Prestressed pipe pile upright |
| CN107964976A (en) * | 2017-11-24 | 2018-04-27 | 常州第建筑集团有限公司 | Steel pipe-conversion steel platform tower crane top-down construction method |
| CN212248224U (en) * | 2020-01-10 | 2020-12-29 | 吕恒柱 | Prefabricated hollow anti-floating pile is with integration bolt formula anti-floating connection structure |
| RU197237U1 (en) * | 2020-02-03 | 2020-04-14 | Николай Валентинович МЕДВЕДЕВ | FOUNDATION ANCHOR FASTENING OF THE TOWER CRANE |
| CN213448403U (en) * | 2020-09-27 | 2021-06-15 | 中铁三局集团有限公司 | Platform device for accurately positioning and quickly constructing underwater support steel pipe pile |
Non-Patent Citations (1)
| Title |
|---|
| 交通部第一公路工程总公司: "《润扬长江公路大桥北索塔北锚碇工程施工技术》", 中国建筑工业出版社, pages: 267 * |
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