CN113931171A - Protection device for preventing tubular pile from being frozen and expanded and damaged - Google Patents
Protection device for preventing tubular pile from being frozen and expanded and damaged Download PDFInfo
- Publication number
- CN113931171A CN113931171A CN202111264914.5A CN202111264914A CN113931171A CN 113931171 A CN113931171 A CN 113931171A CN 202111264914 A CN202111264914 A CN 202111264914A CN 113931171 A CN113931171 A CN 113931171A
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- Prior art keywords
- tubular pile
- protection device
- preventing
- frost heaving
- bottom plate
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- 230000006378 damage Effects 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 19
- 239000006260 foam Substances 0.000 claims description 14
- 239000010881 fly ash Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003673 groundwater Substances 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000004568 cement Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Images
Classifications
-
- 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
- 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
- E02D31/10—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 soil pressure or hydraulic pressure
- E02D31/14—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 soil pressure or hydraulic pressure against frost heaves in soil
-
- 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
Landscapes
- 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)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a protection device for preventing tubular pile frost heaving damage, which comprises a bottom plate, and an inner cylinder and an outer cylinder which are coaxially connected with the bottom plate, wherein the inner cylinder and the outer cylinder are connected together through a plurality of partition plates. The invention solves the problem of tubular pile frost heaving damage caused by groundwater and low temperature, protects the compactness and integrity of the tubular pile structure, and has the functions of heat preservation and water prevention; and the damage of the tubular pile in the construction process is avoided, so that the tubular pile can be effectively protected.
Description
Technical Field
The invention belongs to the field of geotechnical engineering, and particularly relates to a protection device for preventing frost heaving damage of a tubular pile.
Background
Prestressed concrete pipe Piles (PHC) are widely applied to various engineering stressed or auxiliary components in the industries of buildings, new photovoltaic energy, port wharfs and the like, foundation pit support, upright post piles, foundation treatment and the like.
In recent years, the frost heaving damage conditions of the tubular pile are increasing day by day in northern areas, so that some schemes are provided for preventing the tubular pile from being damaged and treating cracks.
A plurality of examples of comprehensive pile foundation damage can be obtained, and the caused pile foundation damage phenomenon is comprehensively shown in two aspects, namely the influence of construction equipment on one hand and the influence of frost heaving effect of the surrounding environment on the other hand. In order to solve the influence of the two aspects, the tubular pile is not influenced and damaged by equipment during construction, and frost heaving damage cannot be caused in winter.
Disclosure of Invention
The invention aims to provide a protection device for preventing tubular pile frost heaving damage, which solves the problem of tubular pile frost heaving damage caused by groundwater and low temperature, protects the compactness and integrity of a tubular pile structure, and has heat preservation and waterproof functions; and the damage of the tubular pile in the construction process is avoided, so that the tubular pile can be effectively protected.
The invention is realized by adopting the following technical scheme:
the utility model provides a protection device that prevention tubular pile frozen and expanded destruction, includes bottom plate and inner tube and urceolus of coaxial coupling on the bottom plate, and links together through a plurality of baffles between inner tube and the urceolus.
The invention is further improved in that an inner groove is formed between the inner cylinder and the bottom plate and used for placing the tubular pile.
A further development of the invention is that the diameter of the pipe stub is smaller than the inner diameter of the inner groove.
The invention is further improved in that a grid groove is formed between the inner cylinder and the outer cylinder through a plurality of partition plates.
The invention is further improved in that 6 grid grooves are arranged.
The invention is further improved in that the grid grooves are used for pouring waterproof materials.
The invention is further improved in that the waterproof material is a foam cement-fly ash material.
The invention is further improved in that the bottom plate and the inner cylinder and the outer cylinder on the bottom plate are connected together by welding.
The invention has at least the following beneficial technical effects:
the protection device for preventing the tubular pile from being damaged by frost heaving is provided with 6 grid grooves for pouring waterproof materials. The material used for casting is foam cement-fly ash material. The foam cement material is a light porous foam heat-insulating material which is obtained by uniformly mixing quantitative foam and cement paste through physical or chemical foaming and then forming and demolding, and has the advantages of light weight, good heat-insulating property, excellent fire resistance and good environmental protection property. The foam cement-fly ash material is applied to the soft soil foundation under the freeze-thaw condition, so that the bearing capacity and durability of the foundation can be improved. The protection device is simple in structure and convenient to operate.
The invention can effectively protect the tubular pile from frost heaving damage caused by underground water and low temperature, and can not cause pile body damage caused by operation during construction.
The invention comprises two straight cylindrical steel plates with the diameters of 250mm and 300mm respectively, which are welded and connected through six steel plates with equal length and the width of 10mm, and a circular bottom plate with the bottom with the radius of 300mm is sealed through welding.
Drawings
FIG. 1 is a flow chart of the construction process of the present invention.
Fig. 2 is a schematic structural view of the tube pile.
Fig. 3 is a plan view of the tube pile.
Fig. 4 is a schematic structural diagram of a protection device for preventing tubular pile frost heaving damage.
Fig. 5 is a top view of the protection device for preventing the tubular pile from being damaged by frost heaving.
Description of reference numerals:
1-pile driver;
2-a pile hammer;
3-a protective device;
4-a crane;
5- -a tubular pile;
6- -inner groove;
7- -a grid groove.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides a protection device for preventing tubular pile frost heaving damage, which comprises a bottom plate, and an inner cylinder and an outer cylinder which are coaxially connected to the bottom plate, wherein the inner cylinder and the outer cylinder are connected together through a plurality of partition plates.
The invention relates to a protection device for preventing tubular piles from being damaged by frost heaving, which is internally provided with 6 grid grooves for pouring waterproof materials. The material used for casting is foam cement-fly ash material. The foam cement material is a light porous foam heat-insulating material which is obtained by uniformly mixing quantitative foam and cement paste through physical or chemical foaming and then forming and demolding, and has the advantages of light weight, good heat-insulating property, excellent fire resistance and good environmental protection property. The foam cement-fly ash material is applied to the soft soil foundation under the freeze-thaw condition, so that the bearing capacity and durability of the foundation can be improved. The protection device is simple in structure and convenient to operate.
The protection device is characterized in that: the tubular pile can be effectively protected from frost heaving damage caused by underground water and low temperature, and a pile body damage caused by operation can not be caused during construction.
The fan device comprises two straight cylindrical steel plates with the diameters of 250mm and 300mm respectively, the two straight cylindrical steel plates are welded and connected through six steel plates with equal length and the width of 10mm, and a circular bottom plate with the radius of 300mm is arranged at the bottom of the straight cylindrical steel plate and is sealed by welding;
examples
Basic parameters: calculating the geological conditions by a silt region, a soft plastic cohesive soil region and a sandy soil region respectively; concrete C30 used by the tubular pile, a pre-buried steel pipe Q235B, hot dip galvanizing, reinforcing steel bars of HPB300 grade and HRB400 grade, and the thickness of a reinforcing steel bar protective layer is 35 mm; the pile type adopts a prestressed high-strength concrete pipe pile with the specification of PHC-250-AB-70; the pile burial depth is 3500mm, and the detail is shown in figure 2; the protection device is made of a steel plate coated with a waterproof coating, and is shown in detail in figure 3; the casting material is a foam cement-fly ash material.
(1) Calculated values of various loads of the pile foundation in the powder soil area are as follows:
a. compressive ultimate bearing capacity:
b. pulling resistance ultimate bearing capacity of Tuk＝∑λiqSikuili＝0.7×46×Π×0.25×3.5＝88.514kN
c. Horizontal ultimate bearing capacity:
the calculated values of all loads of the pile foundation with the added bottle cap in the silt area are as follows:
a. compressive ultimate bearing capacity:
b. pulling resistance ultimate bearing capacity of Tuk＝∑λiqSikuili＝0.7×46×Π×0.30×3.5＝106.217kN
c. Horizontal ultimate bearing capacity:
(2) the calculated values of the loads of the pile foundation in the soft plastic sticky soil area are as follows:
a. compressive ultimate bearing capacity:
b. pulling resistance ultimate bearing capacity of Tuk＝∑λiqSikuili＝0.7×40×Π×0.25×3.5＝76.969kN
c. Horizontal ultimate bearing capacity:
the calculated values of all loads of the pile foundation with the added bottle cap in the cohesive soil area are as follows:
a. compressive ultimate bearing capacity:
b. pulling resistance ultimate bearing capacity of Tuk＝∑λiqSikuili＝0.7×40×Π×0.30×3.5＝92.363kN
c. Horizontal ultimate bearing capacity:
(3) the calculated values of the loads of the pile foundation in the sandy soil area are as follows:
a. compressive ultimate bearing capacity:
b. pulling resistance ultimate bearing capacity of Tuk＝∑λiqSikuili＝0.5×54×Π×0.25×3.5＝74.220kN
c. Horizontal ultimate bearing capacity:
the calculated values of all loads of the pile foundation with the added bottle cap in the sandy soil area are as follows:
a. compressive ultimate bearing capacity:
b. pulling resistance ultimate bearing capacity of Tuk＝∑λiqSikuili＝0.5×54×Π×0.30×3.5＝89.064kN
c. Horizontal ultimate bearing capacity:
therefore, the bearing capacity of all aspects after the protection device is added is improved.
The specific construction method comprises the following steps:
a. measuring and lofting, and positioning, centering and straightening the pile sinking machine and the protection device;
b. hammering and sinking, wherein the upper edge surface of the device is flush with the ground;
c. placing the tubular pile into the inner groove of the device by using a crane;
and pouring the foam cement-fly ash material into the outer groove.
Claims (8)
1. The utility model provides a protection device that prevention tubular pile frozen and expanded destruction which characterized in that, includes bottom plate and coaxial coupling inner tube and urceolus on the bottom plate, and links together through a plurality of baffles between inner tube and the urceolus.
2. The protection device for preventing the tubular pile from being damaged by frost heaving as claimed in claim 1, wherein an inner groove is formed between the inner cylinder and the bottom plate for placing the tubular pile.
3. The protection device for preventing the frost heaving damage of the tubular pile of claim 2, wherein the diameter of the tubular pile is smaller than the inner diameter of the inner groove.
4. The protection device for preventing the tubular pile from being damaged by frost heaving as claimed in claim 1, wherein a grid groove is formed between the inner cylinder and the outer cylinder through a plurality of partition plates.
5. The protection device for preventing tubular pile frost heaving damage of claim 4, wherein there are 6 grid grooves.
6. The protection device for preventing the tubular pile from being damaged by frost heaving of the tubular pile as claimed in claim 4, wherein the grid grooves are filled with waterproof material.
7. The protection device for preventing the tubular pile from being damaged by frost heaving as claimed in claim 6, wherein the waterproof material is a foam cement-fly ash material.
8. The protection device for preventing the frost heaving damage of the tubular pile according to claim 1, wherein the bottom plate and the inner cylinder and the outer cylinder on the bottom plate are connected together by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264914.5A CN113931171A (en) | 2021-10-28 | 2021-10-28 | Protection device for preventing tubular pile from being frozen and expanded and damaged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111264914.5A CN113931171A (en) | 2021-10-28 | 2021-10-28 | Protection device for preventing tubular pile from being frozen and expanded and damaged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113931171A true CN113931171A (en) | 2022-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111264914.5A Pending CN113931171A (en) | 2021-10-28 | 2021-10-28 | Protection device for preventing tubular pile from being frozen and expanded and damaged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113931171A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075282A (en) * | 2022-05-05 | 2022-09-20 | 青海黄河上游水电开发有限责任公司 | Foamed cement heat-preservation anti-freezing-pulling device suitable for PHC pipe pile and manufacturing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095021A1 (en) * | 2014-12-19 | 2016-06-23 | Hatch Ltd. | Extendable sleeve for piles |
| CN206157727U (en) * | 2016-08-31 | 2017-05-10 | 龙建路桥股份有限公司 | Drilled pile protects a section of thick bamboo |
| CN106917406A (en) * | 2017-04-26 | 2017-07-04 | 中联西北工程设计研究院有限公司 | A kind of antifreeze foundation pile and its construction method for Frozen Ground Area photovoltaic bracket |
| CN206784453U (en) * | 2017-06-01 | 2017-12-22 | 四川电力设计咨询有限责任公司 | The concrete foundation anti-freeze expansion structure of Frozen Ground Area |
| CN108930211A (en) * | 2018-08-07 | 2018-12-04 | 中铁西北科学研究院有限公司 | The method for building heat preservation gutter using foam concrete |
| CN113235642A (en) * | 2021-04-25 | 2021-08-10 | 中国电建集团西北勘测设计研究院有限公司 | Anti-stub freeze-drawing casing equipment in frozen soil area and use method |
-
2021
- 2021-10-28 CN CN202111264914.5A patent/CN113931171A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016095021A1 (en) * | 2014-12-19 | 2016-06-23 | Hatch Ltd. | Extendable sleeve for piles |
| CN206157727U (en) * | 2016-08-31 | 2017-05-10 | 龙建路桥股份有限公司 | Drilled pile protects a section of thick bamboo |
| CN106917406A (en) * | 2017-04-26 | 2017-07-04 | 中联西北工程设计研究院有限公司 | A kind of antifreeze foundation pile and its construction method for Frozen Ground Area photovoltaic bracket |
| CN206784453U (en) * | 2017-06-01 | 2017-12-22 | 四川电力设计咨询有限责任公司 | The concrete foundation anti-freeze expansion structure of Frozen Ground Area |
| CN108930211A (en) * | 2018-08-07 | 2018-12-04 | 中铁西北科学研究院有限公司 | The method for building heat preservation gutter using foam concrete |
| CN113235642A (en) * | 2021-04-25 | 2021-08-10 | 中国电建集团西北勘测设计研究院有限公司 | Anti-stub freeze-drawing casing equipment in frozen soil area and use method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075282A (en) * | 2022-05-05 | 2022-09-20 | 青海黄河上游水电开发有限责任公司 | Foamed cement heat-preservation anti-freezing-pulling device suitable for PHC pipe pile and manufacturing method |
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Application publication date: 20220114 |