CN219862770U - Steel protects a section of thick bamboo and keeps apart bored concrete pile structure - Google Patents
Steel protects a section of thick bamboo and keeps apart bored concrete pile structure Download PDFInfo
- Publication number
- CN219862770U CN219862770U CN202321149773.7U CN202321149773U CN219862770U CN 219862770 U CN219862770 U CN 219862770U CN 202321149773 U CN202321149773 U CN 202321149773U CN 219862770 U CN219862770 U CN 219862770U
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- steel
- pile
- casing
- concrete
- protective cylinder
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 235000017166 Bambusa arundinacea Nutrition 0.000 title description 2
- 235000017491 Bambusa tulda Nutrition 0.000 title description 2
- 241001330002 Bambuseae Species 0.000 title description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 title description 2
- 239000011425 bamboo Substances 0.000 title description 2
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 239000011435 rock Substances 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 16
- 239000002689 soil Substances 0.000 claims description 16
- 239000004575 stone Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 3
- 208000006011 Stroke Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 206010008190 Cerebrovascular accident Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a steel pile casing isolation cast-in-place pile structure, which aims to effectively prevent pile body concrete from losing to a wind-caused rock stratum. The steel pile casing isolation cast-in-place pile structure comprises pile foundation concrete and a steel pile casing coated outside the pile foundation concrete, wherein the pile foundation concrete sequentially penetrates through a covering layer and a medium-vibration rock stratum from top to bottom and then is embedded into bedrock, the bottom end of the steel pile casing extends to the position of the bedrock, and bottom sealing concrete is arranged between the steel pile casing and the top surface of the bedrock.
Description
Technical Field
The utility model belongs to the technical field of cast-in-place piles, and particularly relates to a steel pile casing isolation cast-in-place pile structure.
Background
The method is characterized in that the method is influenced by the distribution of karst cave with different sizes of soil cave, filling-free karst cave and even beaded karst cave in the stroke-type rock stratum, and concrete filled in the filling-free karst cave can run off to the stroke-type rock stratum along the pile body of the filling pile and infiltrate into the karst cave in the underwater concrete filling process after the hole is formed. For this reason, steel pile casing is usually used for isolation pouring, but the existing steel pile casing isolation pouring pile structure still has the risk of concrete loss from the bottom of the steel pile casing to the karst cave.
Disclosure of Invention
The utility model mainly aims to provide a steel pile casing isolation cast-in-place pile structure, which aims to effectively prevent pile body concrete from losing to a apoplexy formation.
The steel pile casing isolation cast-in-place pile structure comprises pile foundation concrete and a steel pile casing coated outside the pile foundation concrete, wherein the pile foundation concrete sequentially penetrates through a covering layer and a medium-vibration rock stratum from top to bottom and then is embedded into bedrock, the bottom end of the steel pile casing extends to the position of the bedrock, and bottom sealing concrete is arranged between the steel pile casing and the top surface of the bedrock.
Specifically, the covering layer is divided into an upper soft soil layer and a lower non-soft soil layer, an outer protective cylinder is further arranged on the outer side of the steel protective cylinder, the bottom end of the outer protective cylinder extends into the non-soft soil layer, and stone is filled between the steel protective cylinder and the outer protective cylinder and then grouting concrete is injected.
Specifically, the outside of outer protective cylinder still is equipped with ground trompil protective cylinder.
Specifically, the stone is filled between the steel casing and the wall of the drilling hole, and then grouting concrete is injected.
Compared with the prior art, at least one embodiment of the utility model has the following beneficial effects: after the steel pile casing is lowered to the position of the top surface of the bedrock, a concrete back cover is poured, after the back cover concrete reaches the set strength, a pile foundation diameter punching hammer is adopted, punching is continued to reach the designed elevation of the pile bottom, then hole cleaning is carried out, a steel reinforcement cage below the pile foundation is poured, pile foundation concrete is poured, the back cover is utilized, the poured pile foundation concrete is prevented from losing, and meanwhile accidents of pile breakage after high concrete separation caused by karst cave water flow in a stroke formation to concrete scouring are prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a steel casing isolated cast-in-place pile structure according to an embodiment of the present utility model;
wherein: 1. pile foundation concrete; 2. a steel pile casing; 3. a cover layer; 301. a weak soil layer; 302. a non-weak soil layer; 4. apoplexy transforming rock formation; 5. a bedrock; 6. sealing bottom concrete; 7. an outer casing; 8. a hole is formed on the ground to protect the cylinder; 9. karst cave.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, a steel pile casing isolation cast-in-place pile structure comprises pile foundation concrete 1 and a steel pile casing 2 coated outside the pile foundation concrete 1, wherein the pile foundation concrete 1 sequentially penetrates through a covering layer 3 and a weathered rock layer 4 from top to bottom and then is embedded into a bedrock 5, the bottom end of the steel pile casing 2 extends to the position of the bedrock 5, and a back cover concrete 6 is arranged between the steel pile casing 2 and the top surface of the bedrock 5.
In this embodiment, through with steel pile casing 2 down to 5 top surface positions of bedrock department after, pour concrete back cover, wait that back cover concrete 6 reaches the settlement intensity after, adopt pile foundation diameter hammer punch, continue to punch a hole to the design elevation of pile bottom, then clear the hole, below steel reinforcement cage, pour pile foundation concrete 1, utilize back cover concrete 6 back cover, can prevent that poured pile foundation concrete 1 from running off, prevent simultaneously that well efflorescence stratum 4 in solution cavity 9 department rivers from causing the accident emergence of broken stake after concrete hyperanalysis to the concrete wash.
Referring to fig. 1, in some embodiments, when the covering layer 3 is divided into an upper weak soil layer 301 (silt, pebbles, etc.) and a lower non-weak soil layer 302, in order to further secure construction safety, an outer casing 7 is further provided on the outer side of the steel casing 2, the bottom end of the outer casing 7 extends into the non-weak soil layer 302, and after stones are filled between the steel casing 2 and the outer casing 7, grouting treatment is performed, and grouting concrete is injected between the two.
In the embodiment, when the surface coating is an unstable stratum such as silt, silt and pebbles, the stability of the soil layer in the pile forming process can be effectively ensured and the pile forming quality can be ensured by arranging the outer protective cylinder to penetrate 2-3m below the soft soil layer 301.
It should be explained that, the outer side of the outer casing can be additionally provided with a ground opening casing 8 to play a role in preventing soil layer collapse at the opening, a punch hammer with a diameter slightly larger than that of the steel casing 2 is adopted to perform hole forming, the diameter of the hole forming drill hole is 0.1-0.15m larger than that of the steel casing 2, the steel casings are spliced section by section, the steel casings are applied until the steel casings cannot be automatically lowered, and then the steel casings are applied to a preset depth by using a vibrating hammer. And filling stones between the steel pile casing 2 and the wall of the drilling hole, performing grouting treatment, and injecting grouting concrete between the steel pile casing 2 and the wall of the drilling hole.
Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.
Meanwhile, if the above utility model discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated. Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
The above examples are only illustrative of the utility model and are not intended to be limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Nor is it necessary or impossible to exhaust all embodiments herein. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (5)
1. The utility model provides a bored concrete pile structure is kept apart to steel pile casing, includes pile foundation concrete (1) and cladding pile foundation concrete (1) outer steel pile casing (2), its characterized in that: pile foundation concrete (1) passes through the covering layer (3) from top to bottom in sequence, and is embedded into bedrock (5) after being in a stroke rock stratum (4), the bottom end of the steel pile casing (2) extends to the position department of bedrock (5), and be equipped with back cover concrete (6) between the top surface of steel pile casing (2) and bedrock (5).
2. The steel casing isolation cast-in-place pile structure of claim 1, wherein: the covering layer (3) is divided into a soft soil layer (301) at the upper part and a non-soft soil layer (302) at the lower part, an outer protective cylinder (7) is further arranged at the outer side of the steel protective cylinder (2), the bottom end of the outer protective cylinder (7) extends into the non-soft soil layer (302), and grouting concrete is filled between the steel protective cylinder (2) and the outer protective cylinder (7) after stones are filled.
3. The steel casing isolation cast-in-place pile structure of claim 2, wherein: the outer side of the outer protective cylinder is also provided with a ground open hole protective cylinder (8).
4. The steel casing isolation cast-in-place pile structure of claim 2, wherein: and filling stones between the steel pile casing (2) and the inner wall of the drill hole, and then injecting grouting concrete.
5. The steel casing isolation cast-in-place pile structure of claim 2, wherein: the depth of the outer protective cylinder (7) embedded into the soft soil layer (301) is 2-3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321149773.7U CN219862770U (en) | 2023-05-12 | 2023-05-12 | Steel protects a section of thick bamboo and keeps apart bored concrete pile structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321149773.7U CN219862770U (en) | 2023-05-12 | 2023-05-12 | Steel protects a section of thick bamboo and keeps apart bored concrete pile structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219862770U true CN219862770U (en) | 2023-10-20 |
Family
ID=88368793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321149773.7U Active CN219862770U (en) | 2023-05-12 | 2023-05-12 | Steel protects a section of thick bamboo and keeps apart bored concrete pile structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219862770U (en) |
-
2023
- 2023-05-12 CN CN202321149773.7U patent/CN219862770U/en active Active
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