CN217053323U - Steel-pipe pile and tubular pile slope protection structure - Google Patents
Steel-pipe pile and tubular pile slope protection structure Download PDFInfo
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- CN217053323U CN217053323U CN202220798482.XU CN202220798482U CN217053323U CN 217053323 U CN217053323 U CN 217053323U CN 202220798482 U CN202220798482 U CN 202220798482U CN 217053323 U CN217053323 U CN 217053323U
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Abstract
The utility model discloses a steel pipe pile and a pile slope protection structure, relating to the technical field of slope management; the steel-pipe pile includes the tubular pile body, the tubular pile body is equipped with a plurality of embolism bodies, and is a plurality of along its length direction interval the embolism body will tubular pile body inner chamber is cut apart into a plurality of slip casting chambeies, and each a plurality of overfall holes have all been seted up to the slip casting chamber lateral wall, can accomplish the back at tubular pile body pile, by down up in proper order for each slip casting chamber injection cement paste or pea gravel concrete, at the in-process of filling the tubular pile body, cement paste pours into the soil body of tubular pile body lateral wall periphery into through the overfall hole in for soil produces certain setting hardening between the stake, can increase the mechanical properties of soil body on the one hand, on the other hand has also increased the wholeness of soil between tubular pile body and stake, thereby avoid soil swift current soil between the stake, and improve the bending resistance of single stake. Tubular pile slope protection structure including aforementioned tubular pile body, can avoid soil loss between the stake, ensures the stability of the soil body.
Description
Technical Field
The utility model relates to a technical field is administered to the side slope, concretely relates to steel-pipe pile and tubular pile slope protection structure.
Background
The steel pipe pile has the advantages of wide application range, small equipment volume, small construction occupied area, high construction speed, good construction quality, less dust and mud pollution, high mechanization degree and the like. With the development of infrastructure construction, the application field of the steel pipe pile is wide, and the steel pipe pile is widely applied to the aspects of highways, bridges, infrastructure foundation treatment, slope scour prevention protection, landslide control and the like.
The inventor researches and discovers that after the steel pipe pile is implemented, if more rainwater or the deformation rate is higher, the deformation of the soil body in the deformation area is faster, the sliding force of the soil body at the rear edge of the steel pipe pile is larger, the rigidity of the steel pipe pile and the soil between the piles is lower, the deformation of the soil body at the upper part is difficult to prevent, the steel pipe pile is easy to bend and deform, and the soil between the piles is easy to slip.
SUMMERY OF THE UTILITY MODEL
Aiming at the technical problems that the existing steel pipe pile has smaller rigidity and is easy to bend and deform; the utility model provides a steel-pipe pile and tubular pile slope protection structure can improve the rigidity of steel-pipe pile to prevent that steel-pipe pile from bending to warp and stake soil swift current soil within a definite time.
The utility model discloses a following technical scheme realizes:
in a first aspect, the utility model provides a steel-pipe pile, including the tubular pile body, the tubular pile body is equipped with a plurality of embolism body, a plurality of along its length direction interval the embolism body will a plurality of slip casting chambeies are split into to tubular pile body inner chamber, and each a plurality of excessive thick liquid holes have all been seted up to the slip casting chamber lateral wall.
The utility model provides a tubular pile body passes through the embolism body along tubular pile body length direction, separate for a plurality of slip casting chambeies, set up a plurality of excessive thick liquid holes at slip casting chamber lateral wall, can accomplish the back at tubular pile body pile, by lower up in proper order for each slip casting chamber to pour into cement thick liquid or pea gravel concreten, at the in-process of filling the tubular pile body, the grout pours into the soil body of tubular pile body lateral wall periphery into through excessive thick liquid hole in, make soil produce certain set hardening between the stake, can increase the mechanical properties of the soil body on the one hand, on the other hand has also increased the wholeness of soil between tubular pile body and stake, thereby avoid soil swift current soil between the stake, and simultaneously, pack the mortar in the tubular pile body, can improve the bending resistance of single pile.
In an optional embodiment, the slurry overflow holes are uniformly distributed along the circumferential direction of the tubular pile body so as to ensure that the cement slurry can uniformly flow out of all sides of the tubular pile body.
In an optional embodiment, the slurry overflow holes are distributed along the axial direction of the tubular pile body in a staggered manner, so that soil bodies on the periphery of the tubular pile body can be hardened, and the integrity of the tubular pile body and the soil bodies is improved.
In an alternative embodiment, the grouting cavity is adapted with a concrete filler, that is, the cavity of the tubular pile body is filled with concrete.
In an optional embodiment, this internal adapted many planting bars of pipe pile, each the planting bar is followed pipe pile body circumference extends to through the cooperation of planting bar and concrete, further improve the bending resistance of tubular pile.
In an optional embodiment, the number of the planting bars is an even number greater than 2, and the planting bars are distributed in a rectangular array to ensure that the concrete filling body in the tubular pile body has sufficient hardness.
In an optional embodiment, the tubular pile body comprises a plurality of axially arranged pile sections, and two adjacent pile sections are in threaded connection, so as to facilitate the layout of the tubular pile body.
In an alternative embodiment, the aperture of the grout holes is 2-6mm, so that enough mortar can stay in the grouting cavity while cement grout can flow out of the grout holes.
The second aspect, the utility model provides a tubular pile slope protection structure, including foretell tubular pile body to bending resistance through the tubular pile body and the cohesion of tubular pile body and the soil body avoid soil loss between the stake, ensure the stability of the soil body.
In an optional embodiment, two rows of the tubular pile bodies are arranged at intervals, and the tubular pile bodies are arranged in a staggered manner, so that the stability of a soil body is further improved.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model provides a tubular pile body passes through the cock body along tubular pile body length direction, separate for a plurality of slip casting chambeies, set up a plurality of excessive thick liquid holes at slip casting chamber lateral wall, can accomplish the back at tubular pile body pile, by lower up in proper order for each slip casting chamber to pour into cement thick liquid or pea gravel concreten, at the in-process of filling the tubular pile body, in the soil body of tubular pile body lateral wall periphery is poured into through excessive thick liquid hole to the grout, make soil produce certain set hardening between the stake, can increase the mechanical properties of the soil body on the one hand, on the other hand has also increased the wholeness of soil between tubular pile body and stake, thereby avoid soil swift current between the stake, and simultaneously, pack the mortar in the tubular pile body, can improve the bending resistance of single stake, therefore, the utility model discloses can improve the rigidity of steel-pipe pile, in order to prevent that the steel-pipe pile from bending to warp and soil between the stake.
2. The utility model provides a tubular pile slope protection structure, including aforementioned tubular pile body to bending resistance and the cohesion of tubular pile body and the soil body through the tubular pile body avoid soil loss between the stake, ensure the stability of the soil body.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
In the drawings:
fig. 1 is a schematic longitudinal sectional structure view of a steel pipe pile according to an embodiment of the present invention;
fig. 2 is a schematic view of a transverse cross-sectional structure of a steel pipe pile according to an embodiment of the present invention;
fig. 3 is a schematic view of a longitudinal cross-sectional structure of a slope protection structure of a pipe pile according to an embodiment of the present invention;
fig. 4 is the utility model discloses tubular pile slope protection structure's transverse section structure sketch map.
Reference numbers and corresponding part names in the figures:
10-tubular pile body, 11-plug body, 12-grouting cavity, 13-grout overflow hole, 14-concrete filling body, 15-bar planting, 20-soil body and 30-crack spreading.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.
In the description of the embodiments of the present application, the terms "central," "upper," "lower," "left," "right," "vertical," "longitudinal," "lateral," "horizontal," "inner," "outer," "front," "rear," "top," "bottom," and the like refer to orientations or positional relationships that are conventionally used in the manufacture of the present application, or that are routinely understood by those of ordinary skill in the art, but are merely used to facilitate the description and to simplify the description and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed", "opened", "mounted", "connected", and "connected" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
After the steel pipe pile is implemented, if more rainwater or the deformation rate is higher, the deformation of the soil body in the deformation area is faster, the gliding force of the soil body at the rear edge of the steel pipe pile is higher, the rigidity of the steel pipe pile and the soil between the piles is lower, the deformation of the soil body at the upper part is difficult to prevent, the steel pipe pile is easy to bend and deform, and the soil between the piles is easy to slip. How to increase the rigidity of the steel pipe pile and the integrity of soil between the piles and improve the emergency locking capability is a key problem for the success of emergency measures. Therefore, this embodiment provides a steel-pipe pile and tubular pile slope protection structure to solve above-mentioned problem, the embodiment mode is as follows:
example 1
With reference to fig. 1, this embodiment provides a steel-pipe pile, including tubular pile body 10, tubular pile body 10 is equipped with a plurality of embolism body 11, a plurality of along its length direction interval the embolism body 11 will a plurality of grouting cavity 12 are split into to tubular pile body 10 inner chamber, and each a plurality of excessive thick liquid holes 13 have all been seted up to grouting cavity 12 lateral wall.
Specifically, the conventional steel pipe pile is generally in the shape of a hollow circular pipe, and the diameter thereof is usually 168mm or 219m, and the wall thickness thereof is 10 mm. The plug body 11 only needs to divide the tubular pile body 10 into a plurality of grouting cavities 12 along the length direction thereof, and has no special requirements on materials. As for the aperture of the grout holes 13, the aperture of the grout holes 13 is 2-6mm in the embodiment, so that enough mortar can stay in the grouting cavity 12 while cement mortar can flow out of the grout holes 13.
It should be understood that the soil between piles is usually granular, the mechanical index meets the bottom, soil slip is easily generated, a deformed side slope is usually found through means of investigation and monitoring, emergency treatment measures such as slope cutting, slope load reduction, slope foot filling, drainage increasing, locking notch reinforcing, inspection monitoring reinforcing, emergency plan and the like are generally adopted to slow down and inhibit deformation from being pulled to the rear edge or the side edge, the construction period is long, the cost is high, and the rigidity of the steel pipe pile is not fundamentally increased, but the pipe pile body 10 provided by the embodiment is divided into a plurality of grouting cavities 12 along the length direction of the pipe pile body 10 through plugs 11, and a plurality of grout overflow holes 13 are formed in the side walls of the grouting cavities 12.
Therefore, the steel pipe pile provided by this embodiment can be after the pile of tubular pile body 10 is completed, grout or pea gravel concrete is injected into each grouting cavity 12 from bottom to top in sequence, if C20 pea gravel concrete is used for filling, in the process of filling tubular pile body 10, grout is injected into soil body 20 at the periphery of the side wall of tubular pile body 10 through grout overflow hole 13, so that soil between piles is solidified to a certain extent, on one hand, mechanical properties of soil body 20 can be increased, on the other hand, integrity of tubular pile body 10 and soil between piles is also increased, thereby soil slip between piles is avoided, and meanwhile, mortar is filled in tubular pile body 10, and bending resistance of a single pile can be improved.
In summary, the steel pipe pile according to the present embodiment can improve the rigidity of the steel pipe pile, improve the integrity between the pipe pile body 10 and the soil between the piles, and improve the structural strength of the soil between the piles, thereby preventing the steel pipe pile from being bent and deformed and preventing the soil between the piles from slipping.
It should be noted that the steel pipe pile provided by the embodiment is not only suitable for common slope protection, but also can be used in application scenes that pipe piles need to be inserted into soil bodies, such as roads, bridges, infrastructure foundation treatment, slope anti-scouring protection, landslide control and the like.
Example 2
With reference to fig. 1, this embodiment provides a steel pipe pile, and as a preferred embodiment of embodiment 1, a plurality of grout leaking holes 13 are uniformly distributed along the circumference of the pipe pile body 10, so as to ensure that grout can uniformly flow out from each side of the pipe pile body 10. The number of overflow openings is generally 6-10, in this embodiment 8.
With reference to fig. 1, the plural circles of slurry overflow holes 13 are distributed along the axial direction of the tubular pile body 10 in a staggered manner, that is, along the circumferential direction of the tubular pile body 10, the centers of the plural slurry overflow holes 13 are not on the same straight line, so as to ensure that the soil 20 on the periphery of the tubular pile body 10 can be hardened, and improve the integrity of the tubular pile body 10 and the soil 20.
Example 3
With reference to fig. 1, the present embodiment provides a steel pipe pile, based on the structure and principle described in embodiment 1, a concrete filling body 14 is adapted in the grouting cavity 12, that is, the inner cavity of the pipe pile body 10 is filled with concrete, and the concrete filling body 14 adopts different labels, such as C20 fine aggregate concrete, according to specific situations.
It can be understood that the calculation formula of the pipe pile strength is as follows: sigma max ＝M max /W Z ，
Wherein alpha is the ratio of the inner diameter to the outer diameter of the circular tube, W Z The bending resistance section coefficient. From the above formula, the bending resistance is proportional to the bending section coefficient of the tubular pile, and the bending section coefficient can be increased by reducing the diameter of the hollow core. In actual construction, a solid steel pipe cannot be used in consideration of ease of construction in terms of construction cost. In this embodiment, the tubular pile body 10 is filled with the concrete filling body 14, so that the tubular pile can be addedThe bending resistance of the body 10.
Further, the adaptation has many planting bars 15 in the tubular pile body 10, each 15 edges of planting bar 10 circumference of tubular pile body is extended to through the cooperation of planting bar 15 and concrete, further improve the bending resistance of tubular pile.
Specifically, referring to fig. 2, the number of the plant bars 15 is an even number greater than 2, and a plurality of the plant bars 15 are distributed in a rectangular array, for example, 4 plant bars 15 are distributed in a rectangular array, so as to ensure that the concrete filling body 14 in the tubular pile body 10 has sufficient hardness. In this embodiment, the embedded steel bar 15 is a ribbed steel bar with a diameter of 28, and the number and the size of the steel bars are determined according to the specific bearing pressure, but may be other numbers and sizes of steel bars.
Example 4
This embodiment provides a steel-pipe pile, based on embodiment 1, tubular pile body 10 includes a plurality of stake sections that the axial set up, adjacent two stake section spiro union sets up corresponding internal thread if the one end at the stake section sets up external screw thread, the other end to lay of tubular pile body 10. Adjacent pile sections may of course also be connected by flange connections, welding, etc.
Example 5
The utility model provides a tubular pile slope protection structure, including foretell tubular pile body 10 to bending resistance and tubular pile body 10 through tubular pile body 10 and the cohesion of the soil body 20 avoid soil loss between the stake, ensure the stability of the soil body 20.
Preferably, the tubular pile body 10 interval is equipped with two rows, and two rows tubular pile body 10 sets up in a staggered manner to further improve the stability of soil body 20.
In the implementation of the embodiment, according to the factors such as the deformation condition of the side slope, the construction condition, the construction cost and the like, two rows of steel pipe piles are arranged within the range of about 5-10 m away from the deformation rear edge, the row distance is 1m, the distance is 1m, and the two rows adopt quincunx arranged emergency measures; according to the thickness of a deformation body and the geological characteristics of stratum engineering, the length of the general pile end entering a non-skid section (strongly weathered to weakly weathered bedrock) is about 1/4-1/3. According to the type and power condition of a down-the-hole drill in the field, the diameter of the pile is generally 168mm or 219mm, R780 (or P110) geological steel pipe with the wall thickness of 10mm is adopted as the material of the steel pipe pile, and C20 fine aggregate concrete is adopted for filling.
The concrete implementation is as follows:
s1, arranging 2 rows of steel pipe piles at the rear edge which is 5m away from the cracks according to the spreading condition of the cracks on the slope, wherein the row distance is 1m and the distance is 1 m;
s2, processing the steel pipe into a perforated pipe, punching holes on the wall of the steel pipe, wherein the hole diameter is 3mm, 8 holes are punched along the wall of the pipe at each meter section, and the holes are uniformly staggered along the wall of the pipe, so that slurry can be diffused along the periphery of the pile wall;
s3, after the pile hole is drilled to the designed depth, the steel pipe is put in sections, each section is 3m, and the sections are connected by adopting spiral screw threads;
s4, grouting by using common pure cement grout with a water-cement ratio of 0.5: 1;
specifically, the grouting is performed in a segmented grouting sequence from bottom to top, the length of each segment is 10m, the grouting is stopped when the grouting continues until the diffusion radius is about 0.5m, the grouting pressure of the strongly weathered bedrock segment at the lower part is not more than 0.1Mpa, the grouting pressure of the soil body 20 at the upper part is 0.01-0.1 Mpa, and specific pressure parameters are determined according to field tests, so that the grouting diffusion radius of the steel pipe is about 0.5m, the grout between two piles in the same row is subjected to infiltration diffusion intersection, and the grout is subjected to infiltration diffusion intersection after the front row and the rear row are grouted. And the fine aggregate concrete is used for backfilling, and after the fine aggregate concrete reaches the age, the steel pipe pile with the steel pipe outside and the reinforced concrete inside is formed, so that steel can be saved, and the bending-resistant section coefficient can be increased.
Wherein, the top of the lowest section can adopt a plug, the bottom is open, the plugs are respectively adopted at the two ends of the rest sections, grouting is carried out at the closed sections of the two plugs, so that cement grout is obtained to carry out infiltration diffusion along the gap of the soil body 20 between the piles, a mixture is formed between the soil and the cement grout in the diffusion range, after the cement grout is condensed, the mechanical property of the soil body 20 mixed by the cement grout is improved to a certain extent, the strength of the soil body 20 is improved to a certain extent, and the soil body 20 in the diffusion range also has a certain integrity.
The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a steel-pipe pile, includes tubular pile body (10), its characterized in that, tubular pile body (10) are equipped with a plurality of cock bodies (11) along its length direction interval, and are a plurality of cock body (11) will tubular pile body (10) inner chamber is cut apart into a plurality of slip casting chambeies (12), and each a plurality of excessive thick liquid holes (13) have all been seted up to slip casting chamber (12) lateral wall.
2. The steel pipe pile according to claim 1, wherein the plurality of grout outlet holes (13) are evenly distributed along the circumferential direction of the pipe pile body (10).
3. The steel pipe pile according to claim 2, wherein a plurality of circles of grout holes (13) are axially staggered along the pipe pile body (10).
4. Steel pipe pile according to claim 1, characterised in that a concrete filling body (14) is fitted in the grouting cavity (12).
5. The steel pipe pile of claim 4, wherein a plurality of steel bars (15) are adapted in the pipe pile body (10), and each steel bar (15) extends along the circumferential direction of the pipe pile body (10).
6. The steel pipe pile according to claim 5, wherein the number of the planted bars (15) is an even number greater than 2, and the planted bars (15) are distributed in a rectangular array.
7. The steel pipe pile according to any one of claims 1 to 6, wherein the tubular pile body (10) includes a plurality of axially arranged pile segments, and two adjacent pile segments are screwed together.
8. The steel pipe pile according to any one of claims 1 to 6, wherein the diameter of the grout holes (13) is 2-6 mm.
9. A tubular pile slope protection structure, characterized by comprising a plurality of tubular pile bodies (10) according to any one of claims 1 to 8.
10. The utility model provides a tubular pile slope protection structure, its characterized in that, tubular pile body (10) interval is equipped with two rows, and two rows tubular pile body (10) crisscross setting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220798482.XU CN217053323U (en) | 2022-04-02 | 2022-04-02 | Steel-pipe pile and tubular pile slope protection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220798482.XU CN217053323U (en) | 2022-04-02 | 2022-04-02 | Steel-pipe pile and tubular pile slope protection structure |
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| CN217053323U true CN217053323U (en) | 2022-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492086A (en) * | 2022-11-01 | 2022-12-20 | 云南建投第一勘察设计有限公司 | Post-grouting steel pipe pile and grouting method |
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2022
- 2022-04-02 CN CN202220798482.XU patent/CN217053323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492086A (en) * | 2022-11-01 | 2022-12-20 | 云南建投第一勘察设计有限公司 | Post-grouting steel pipe pile and grouting method |
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