CN115305944A - Construction method for supporting pile serving as tower crane foundation pile - Google Patents
Construction method for supporting pile serving as tower crane foundation pile Download PDFInfo
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- CN115305944A CN115305944A CN202211074180.9A CN202211074180A CN115305944A CN 115305944 A CN115305944 A CN 115305944A CN 202211074180 A CN202211074180 A CN 202211074180A CN 115305944 A CN115305944 A CN 115305944A
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000011065 in-situ storage Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 4
- 230000008520 organization Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 210000001015 abdomen Anatomy 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/06—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers for observation while placing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention provides a construction method for a support pile and a tower crane foundation pile, which comprises the steps of preliminarily determining arrangement and model selection parameters of a tower crane, preliminarily calculating model selection of the tower crane foundation pile, constructing a bored pile, processing a tower crane foundation platform, installing the tower crane foundation platform, installing and monitoring the tower crane and the like. Compared with the conventional concrete foundation, the construction method combining the stiffened concrete pile and the section steel tower crane foundation platform has the advantages of shorter construction period, lighter self weight and reduction of the top load of the foundation pit.
Description
Technical Field
The invention relates to the technical field of tower crane foundation piles, in particular to a construction method for simultaneously using a support pile as a tower crane foundation pile.
Background
Along with the development of cities, more and more buildings begin to develop underground spaces, the excavation depth and the land utilization rate of the underground spaces are continuously increased, the distance between a basement sideline and a foundation pit support is closer and closer, and due to the complex modeling of an upper structure, repeated knocking needs to be carried out on the plane arrangement of a construction site during the design and the establishment of construction organization. When the construction site floor plan is drawn, relevant factors such as temporary roads, material yards and the like are considered, and the type selection and the arrangement of the tower crane are very important.
Traditional tower crane arranges when satisfying field usage, allocation and transportation demand, selects to avoid main building, skirt building when the tower crane arranges, and this kind of traditional tower crane arrangement mode mainly has following shortcoming: 1. when the tower crane is arranged in the range of a pure ground garage, the service cycle of the tower crane is long, so that the water in the underground garage region cannot be cut off for a long time, and the construction progress of an underground structure is influenced; 2. when the tower crane is arranged outside the foundation pit, the tower crane is far away from the operation surface in the foundation pit, the utilization rate of the tower crane is not high, temporary roads and material yards around the tower crane occupy, and the requirements of land conservation are not met; 3. the tower crane outside the foundation pit is influenced by the upper load distribution construction, so that the transfer load is large, and the influence on the deformation of the foundation pit is large.
Disclosure of Invention
Aiming at the prior art, the invention provides a construction method for a support pile serving as a tower crane foundation pile.
The invention provides a construction method for a support pile serving as a tower crane foundation pile, which comprises the following steps:
s1, preliminarily determining arrangement and model selection parameters of a tower crane: when the construction organization design is compiled, the model selection and the arrangement position of the tower crane are determined according to the actual requirements on site, and a basis is provided for calculating the model selection of the tower crane foundation and the foundation pile;
s2, initially calculating the type selection of the tower crane foundation pile: preliminarily determining stiff column structures and reinforcement foundation information by calculation according to the tower crane model selection and arrangement position determined by the construction group and the geotechnical information provided by a geological survey report;
s3, construction of the cast-in-situ bored pile: after a hole is formed in the cast-in-place bored pile, a steel column is lowered, a support bracket is erected at the hole opening, the steel column penetrates through the support bracket and is lowered into the hole, after lowering is completed, elevation and verticality adjustment is carried out through a positioning clamping plate at the side part of the steel column, a support bracket at the top part of the support bracket and a steel plate strip on the support bracket, the requirements of spot welding fixing, concrete pouring and support bracket cutting are met, and the elevation of the top end of the steel column is higher than the finished surface of a crown beam;
s4, machining a tower crane foundation platform: the tower crane foundation platform comprises two main steel beams, four auxiliary steel beams and four pull rods, wherein the two main steel beams are crossed, the crossed parts are fixedly connected through the four auxiliary steel beams, the end parts of the main steel beams are fixedly connected through the four pull rods, and tower crane foundation bolt-saving holes are reserved at the connection parts of the main steel beams and the auxiliary steel beams;
s5, installing a tower crane foundation platform: after the bored pile reaches the age, breaking pile head concrete, constructing a supporting pile crown beam, transporting the tower crane foundation platform to the site, and connecting a connecting plate reserved on a main steel beam with a pile head bracket during factory processing to finish the installation of the tower crane foundation platform;
s6, tower crane installation and monitoring: and after the tower crane foundation platform is installed, installing a tower crane, and timely carrying out settlement observation and foundation pit deformation monitoring in the tower crane installation and construction processes.
Preferably, in S4, a stiffening plate is provided at the web of the main steel girder.
Preferably, in S4, the size of the tower crane foundation platform is 4m by 0.668m.
Preferably, in S4, the pull rod is made of 14# a channel steel.
Compared with the prior art, the invention has the beneficial effects that:
1. the support pile is also used as a tower crane foundation pile, and in order to weaken the adverse effect and reduce the risk and hidden danger of foundation pit deformation, the support pile is partially used as a stiff concrete cast-in-place pile to improve the bearing capacity of the foundation pit support in consideration of the potential adverse effect of dynamic load generated in the tower crane construction process on the foundation pit support.
2. Compared with the conventional concrete foundation, the construction method combining the stiff concrete pile and the section steel tower crane foundation platform has the advantages of shorter construction period, lighter self weight and reduced foundation pit top load.
3. When the support pile is used as a tower crane foundation pile, the use safety of a foundation pit is required to be met while the use safety of a tower crane is met, and in order to enhance the bearing capacity of the cast-in-situ bored pile and reduce the adverse effect on the foundation pit caused by the settlement and deformation of the cast-in-situ bored pile due to the use of the tower crane, a stiff concrete cast-in-situ pile is adopted as a local dually-used pile. In order to improve the construction efficiency, reduce the dead weight of a bearing platform and reduce the safety risk of a foundation pit, a profile steel tower crane foundation platform is selected and used, the profile steel tower crane foundation platform consists of two main steel beams, four auxiliary steel beams and four pull rods, the four main steel beams are connected with steel column brackets of a pile head of a stiff concrete cast-in-place pile through connecting plates, a tower crane foundation pile and a support pile can be constructed simultaneously in the construction process, and the profile steel tower crane foundation platform can be quickly and reliably connected with a duel pile, so that the construction efficiency is improved.
Drawings
Fig. 1 is a schematic construction diagram of a cast-in-situ bored pile according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a tower crane foundation platform in the embodiment of the invention.
In the figure, 1, a cast-in-situ bored pile; 2. a steel column; 3. a support bracket; 4. positioning a clamping plate; 5. a main steel beam; 6. auxiliary steel beams; 7. a pull rod; 8. a stiffening plate; 9. a tower crane foundation bolt-saving hole.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific drawings.
Examples
A construction method for a support pile serving as a tower crane foundation pile comprises the following steps:
s1, preliminarily determining arrangement and type selection parameters of a tower crane: when the construction organization design is compiled, the model selection and the arrangement position of the tower crane are determined according to the actual requirements on site, and a basis is provided for calculating the model selection of the tower crane foundation and the foundation pile;
s2, initially calculating the type selection of the tower crane foundation pile: preliminarily determining stiff column structures and reinforcing steel bar foundation information by calculation according to the tower crane model selection and arrangement position determined by the group and the geotechnical information provided by the geological survey report; carefully researching a geological survey report before calculation, determining geological conditions and calculation parameters at a position according to survey points near arrangement points of the tower crane, substituting the most unfavorable geological conditions and load conditions into calculation during calculation, substituting a pile type and reinforcing bars of a support pile at the position into calculation during initial pile diameter selection, adjusting according to calculation results, summarizing initial calculation results, comparing and selecting the initial calculation results with the original support pile type, and determining the larger one of the two areas by a design unit, wherein the pile type at the position meets the safety requirements of a foundation pit;
s3, construction of the cast-in-situ bored pile: as shown in fig. 1, after a hole is formed in a cast-in-situ bored pile 1, a steel column 2 is lifted and lowered by a crane, a support bracket 3 is erected at the orifice, the steel column 2 penetrates through the support bracket 3 and is lowered into the hole by the crane, after the lowering is finished, elevation and verticality adjustment are carried out through a positioning clamping plate 4 on the side part of the steel column 2, a support bracket on the top part of the support bracket 3 and a steel plate strip on the support bracket 3, the requirements of spot welding fixation, concrete pouring and cutting off of the support bracket 3 after the design are met, and the elevation of the top end of the steel column 2 is higher than the finished surface of a crown beam;
s4, machining a tower crane foundation platform: the tower crane foundation platform is processed in a factory in advance, as shown in fig. 2, the tower crane foundation platform comprises two main steel beams 5, the two main steel beams 5 are crossed, the crossed part is connected and fixed through four auxiliary steel beams 6, the end parts of the main steel beams 5 are connected and fixed through four pull rods 7, stiffening plates 8 are arranged on the abdomen parts of the main steel beams 5, the size of the tower crane foundation platform is 4m 0.668m, the pull rods 7 are made of 14# a channel steel, and tower crane foundation joint bolt holes 9 are reserved at the joint parts of the main steel beams 5 and the auxiliary steel beams 6;
s5, installing a tower crane foundation platform: after the bored pile reaches the age, breaking pile head concrete, constructing a supporting pile crown beam, paying attention to the protection of a pile head bracket of the bored pile during the construction of the crown beam, transporting a tower crane foundation platform to the site, and connecting a connecting plate reserved on a main steel beam during factory processing with the pile head bracket to complete the installation of the tower crane foundation platform;
s6, tower crane installation and monitoring: and after the tower crane foundation platform is installed, installing a tower crane, and timely carrying out settlement observation and foundation pit deformation monitoring in the tower crane installation and construction processes.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are also within the scope of the present invention.
Claims (4)
1. A construction method for a support pile serving as a tower crane foundation pile is characterized by comprising the following steps:
s1, preliminarily determining arrangement and model selection parameters of a tower crane: when the construction organization design is compiled, the model selection and the arrangement position of the tower crane are determined according to the actual requirements on site, and a basis is provided for calculating the model selection of the tower crane foundation and the foundation pile;
s2, initially calculating the type selection of the tower crane foundation pile: preliminarily determining stiff column structures and reinforcement foundation information by calculation according to the tower crane model selection and arrangement position determined by the construction group and the geotechnical information provided by a geological survey report;
s3, construction of the cast-in-situ bored pile: after a hole is formed in the cast-in-place bored pile, a steel column is lowered, a support bracket is erected at the hole opening, the steel column penetrates through the support bracket and is lowered into the hole, after lowering is completed, elevation and verticality adjustment is carried out through a positioning clamping plate at the side part of the steel column, a support bracket at the top part of the support bracket and a steel plate strip on the support bracket, the requirements of spot welding fixing, concrete pouring and support bracket cutting are met, and the elevation of the top end of the steel column is higher than the finished surface of a crown beam;
s4, machining a tower crane foundation platform: the tower crane foundation platform comprises two main steel beams, four auxiliary steel beams and four pull rods, wherein the two main steel beams are crossed, the crossed parts are fixedly connected through the four auxiliary steel beams, the end parts of the main steel beams are fixedly connected through the four pull rods, and tower crane foundation joint bolt holes are reserved at the joint parts of the main steel beams and the auxiliary steel beams;
s5, installing a tower crane foundation platform: after the cast-in-situ bored pile reaches the age, pile head concrete is broken, pile crown beam supporting construction is carried out, and after the tower crane foundation platform is transported to the site, a connecting plate reserved on a main steel beam is connected with a pile head bracket through machining in a factory, so that the tower crane foundation platform is installed;
s6, tower crane installation and monitoring: and after the tower crane foundation platform is installed, installing a tower crane, and timely carrying out settlement observation and foundation pit deformation monitoring in the tower crane installation and construction processes.
2. A method for constructing a support pile and tower crane foundation pile as claimed in claim 1, wherein in S4, stiffening plates are provided on the abdomen of the main steel beams.
3. The method for constructing the supporting pile and serving as the tower crane foundation pile as claimed in claim 1 or 2, wherein in S4, the size of a tower crane foundation platform is 4m4m0.668m.
4. The construction method of the support pile and the tower crane foundation pile as claimed in claim 1 or 2, wherein in S4, the tie bar is made of 14# a channel steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211074180.9A CN115305944A (en) | 2022-09-02 | 2022-09-02 | Construction method for supporting pile serving as tower crane foundation pile |
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| CN202211074180.9A CN115305944A (en) | 2022-09-02 | 2022-09-02 | Construction method for supporting pile serving as tower crane foundation pile |
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| CN115305944A true CN115305944A (en) | 2022-11-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481910A (en) * | 2009-01-09 | 2009-07-15 | 江苏省华建建设股份有限公司 | Construction method of foundation pit slope supported independent pile tower crane foundation |
| CN202073112U (en) * | 2011-05-10 | 2011-12-14 | 中天建设集团有限公司天津分公司 | Tower crane foundation structure |
| CN103485360A (en) * | 2013-10-12 | 2014-01-01 | 中建八局第三建设有限公司 | Steel platform tower crane foundation and construction method thereof |
| CN206986914U (en) * | 2017-06-23 | 2018-02-09 | 中建八局第三建设有限公司 | A kind of shaped steel tower crane basis steel platform |
| CN112227409A (en) * | 2020-10-30 | 2021-01-15 | 中国建筑第四工程局有限公司 | Combined tower crane foundation structure utilizing support piles and construction method |
| DE202022104117U1 (en) * | 2022-07-21 | 2022-08-25 | China Railway Liuyuan Group Co., Ltd. | An underground mine support structure combined with piles and pipes, which can take into account the treatment of voids |
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2022
- 2022-09-02 CN CN202211074180.9A patent/CN115305944A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481910A (en) * | 2009-01-09 | 2009-07-15 | 江苏省华建建设股份有限公司 | Construction method of foundation pit slope supported independent pile tower crane foundation |
| CN202073112U (en) * | 2011-05-10 | 2011-12-14 | 中天建设集团有限公司天津分公司 | Tower crane foundation structure |
| CN103485360A (en) * | 2013-10-12 | 2014-01-01 | 中建八局第三建设有限公司 | Steel platform tower crane foundation and construction method thereof |
| CN206986914U (en) * | 2017-06-23 | 2018-02-09 | 中建八局第三建设有限公司 | A kind of shaped steel tower crane basis steel platform |
| CN112227409A (en) * | 2020-10-30 | 2021-01-15 | 中国建筑第四工程局有限公司 | Combined tower crane foundation structure utilizing support piles and construction method |
| DE202022104117U1 (en) * | 2022-07-21 | 2022-08-25 | China Railway Liuyuan Group Co., Ltd. | An underground mine support structure combined with piles and pipes, which can take into account the treatment of voids |
Non-Patent Citations (2)
| Title |
|---|
| 丁红岩: "《高层建筑施工》", vol. 1, 28 February 2013, 天津大学出版社, pages: 23 - 25 * |
| 章海彬;: "深基坑支护桩作为大吨位塔吊基础施工技术", 工程质量, no. 01, pages 77 - 80 * |
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