CN113931172A - 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
- CN113931172A CN113931172A CN202111264917.9A CN202111264917A CN113931172A CN 113931172 A CN113931172 A CN 113931172A CN 202111264917 A CN202111264917 A CN 202111264917A CN 113931172 A CN113931172 A CN 113931172A
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- Prior art keywords
- tubular pile
- protection device
- preventing
- frost heaving
- groove
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- 230000006378 damage Effects 0.000 claims abstract description 25
- 230000002265 prevention Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 15
- 239000006260 foam Substances 0.000 claims description 14
- 239000010881 fly ash Substances 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 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
- 230000008569 process Effects 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 4
- 239000004568 cement Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004567 concrete Substances 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
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 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
- 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
- 239000012858 resilient material 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
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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)
- 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 on the bottom plate, wherein the height of the inner cylinder is lower than that of the outer cylinder. 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 relates to the field of geotechnical engineering, in particular 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 the bottom plate to and inner tube and urceolus of coaxial coupling on the bottom plate, and the height that highly is less than the urceolus of inner tube.
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 the diameter of the groove is set to be 250mm according to the diameter of the tubular pile, and the height of the groove is 1000 mm.
A further improvement of the invention is that an outer groove is formed between the inner and outer cylinders.
The invention is further improved in that elastic material is poured into the outer groove.
A further improvement of the invention is that the resilient material is a foamed cement-fly ash material.
The invention is further improved in that the diameter of the outer groove is set to 300mm according to the diameter of the inner groove, and the height is 3500 mm.
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 frost heaving damage of the tubular pile is provided with an inner groove and an outer groove, and an elastic material is poured into the outer groove, wherein the material used for pouring is a 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 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.
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 view of a protection device for preventing tubular pile frost heaving damage according to the present invention.
Fig. 5 is a top view of a protection device for preventing the tubular pile from being damaged by frost heaving according to the present invention.
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- -outer 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 protection device for preventing the frost heaving damage of the tubular pile is provided with an inner groove and an outer groove, and an elastic material is poured into the outer groove, wherein the material used for pouring is a 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 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 protection device is a straight cylindrical steel plate with the thickness of 10mm, and the bottom of the protection device is a circular steel plate with the diameter of 300mm, and the bottom of the protection device is sealed by welding;
the casting material is a foam cement-fly ash material;
the diameter of a groove in the device is set to be 250mm according to the diameter of the tubular pile, and the height of the groove is 1000 mm;
the diameter of the outer groove of the device is set to be 300mm according to the diameter of the inner groove, and the height is 3500 mm.
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. anti-pulling limit bearing capacity: t isuk＝∑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 in the silt region after the protection device is added are as follows:
a. compressive ultimate bearing capacity:
b. anti-pulling limit bearing capacity: t isuk＝∑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. anti-pulling limit bearing capacity: t isuk＝∑λiqSikuili＝0.7×40×Π×0.25×3.5＝76.969kN
c. Horizontal ultimate bearing capacity:
the calculated values of various loads of the pile foundation with the protection device in the cohesive soil area are as follows:
a. compressive ultimate bearing capacity:
b. anti-pulling limit bearing capacity: t isuk＝∑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:
477.325kN
b. anti-pulling limit bearing capacity: t isuk＝∑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 in the sandy soil area after the protection device is added are as follows:
a. compressive ultimate bearing capacity:
b. anti-pulling limit bearing capacity: t isuk＝∑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 concrete construction method of the invention is as follows:
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.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a protection device that prevention tubular pile frozen and expanded destruction which characterized in that, includes the bottom plate to and inner tube and urceolus of coaxial coupling on the bottom plate, and the height that highly is less than the urceolus of inner tube.
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 2, wherein the diameter of the groove is set to 250mm according to the diameter of the tubular pile, and the height of the groove is 1000 mm.
5. The protection device for preventing the frost heaving damage of the tubular pile according to claim 1, wherein an outer groove is formed between the inner cylinder and the outer cylinder.
6. The protection device for preventing the frost heaving damage of the tubular pile according to claim 5, wherein an elastic material is poured into the outer groove.
7. The protection device for preventing the frost heaving damage of the tubular pile according to claim 6, wherein the elastic material is a foam cement-fly ash material.
8. The protection device for preventing the tubular pile from being damaged by frost heaving of the tubular pile as claimed in claim 5, wherein the diameter of the outer groove is 300mm and the height is 3500mm according to the diameter of the inner groove.
9. 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 |
|---|---|---|---|
| CN202111264917.9A CN113931172A (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 |
|---|---|---|---|
| CN202111264917.9A CN113931172A (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 |
|---|---|
| CN113931172A true CN113931172A (en) | 2022-01-14 |
Family
ID=79284827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111264917.9A Pending CN113931172A (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) | CN113931172A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1076822A (en) * | 1978-03-29 | 1980-05-06 | Hallingplast A/S | Foundation pile |
| GB201003754D0 (en) * | 2010-03-06 | 2010-04-21 | Shire Structures Ltd | Improvements in or realting to small diameter piles |
| CN203296175U (en) * | 2013-06-24 | 2013-11-20 | 北京亚太可建钢结构技术研发有限公司 | Rectangular steel pipe column assembly type column foot |
| CN106480885A (en) * | 2016-11-07 | 2017-03-08 | 金陵科技学院 | Pile tube vertical piling positioning auxiliary device in a kind of cement soil wall |
| CN107558506A (en) * | 2017-08-20 | 2018-01-09 | 兰州大学 | A kind of new concrete anti-corrosion foundation pile and its construction technology |
| CN110670579A (en) * | 2019-04-17 | 2020-01-10 | 柳红滨 | Hoop pile for pile foundation engineering and foundation treatment and construction process thereof |
| CN211498927U (en) * | 2019-12-25 | 2020-09-15 | 内蒙古大学 | Anti-freezing taper type tower foundation |
| CN212835351U (en) * | 2020-07-25 | 2021-03-30 | 广东万信建设工程科技有限公司 | Bearing structure for pile foundation |
-
2021
- 2021-10-28 CN CN202111264917.9A patent/CN113931172A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1076822A (en) * | 1978-03-29 | 1980-05-06 | Hallingplast A/S | Foundation pile |
| GB201003754D0 (en) * | 2010-03-06 | 2010-04-21 | Shire Structures Ltd | Improvements in or realting to small diameter piles |
| CN203296175U (en) * | 2013-06-24 | 2013-11-20 | 北京亚太可建钢结构技术研发有限公司 | Rectangular steel pipe column assembly type column foot |
| CN106480885A (en) * | 2016-11-07 | 2017-03-08 | 金陵科技学院 | Pile tube vertical piling positioning auxiliary device in a kind of cement soil wall |
| CN107558506A (en) * | 2017-08-20 | 2018-01-09 | 兰州大学 | A kind of new concrete anti-corrosion foundation pile and its construction technology |
| CN110670579A (en) * | 2019-04-17 | 2020-01-10 | 柳红滨 | Hoop pile for pile foundation engineering and foundation treatment and construction process thereof |
| CN211498927U (en) * | 2019-12-25 | 2020-09-15 | 内蒙古大学 | Anti-freezing taper type tower foundation |
| CN212835351U (en) * | 2020-07-25 | 2021-03-30 | 广东万信建设工程科技有限公司 | Bearing structure for pile foundation |
Non-Patent Citations (2)
| Title |
|---|
| 张巨松: "《泡沫混凝土》", 31 January 2016, 哈尔滨工业大学出版社 * |
| 闫振甲等: "《泡沫混凝土泡沫剂生产与应用技术》", 30 September 2020, 中国建材工业出版社 * |
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Application publication date: 20220114 |
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