CN218894091U - Utilize integrated cantilever pile supporting construction of hardening road - Google Patents
Utilize integrated cantilever pile supporting construction of hardening road Download PDFInfo
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- CN218894091U CN218894091U CN202222994058.5U CN202222994058U CN218894091U CN 218894091 U CN218894091 U CN 218894091U CN 202222994058 U CN202222994058 U CN 202222994058U CN 218894091 U CN218894091 U CN 218894091U
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Abstract
The scheme discloses an integrated cantilever pile supporting structure utilizing a hardened road, and relates to the technical field of foundation pit supporting. In order to solve the defects of the supporting structure in the prior art; the integrated cantilever pile supporting structure comprises a foundation pit body, a side slope body arranged on the periphery of the foundation pit body and an integrated supporting part, wherein the integrated supporting part comprises more than two cantilever pile bodies embedded into the bottom of the foundation pit body along the inner side of the foundation pit body. According to the utility model, the anchor pile, the cantilever pile body and the hardened road body are utilized to form an integrated combined supporting structure, so that the safety of foundation pit supporting operation is improved, the safety coefficient of the side slope body is greatly improved, the construction cost of the supporting structure is reduced, and the construction time is shortened.
Description
Technical Field
The utility model relates to the technical field of foundation pit support, in particular to an integrated cantilever pile support structure utilizing a hardened road.
Background
At present, when building foundation pit engineering is implemented, the foundation pit support forms mainly comprise support forms such as soil nailing walls, underground continuous walls, steel sheet piles, piles-anchors and the like. The cantilever pile support and the ground road hardening in the pile-anchor support are generally independently constructed, the cantilever pile is used for foundation pit support, and the road hardening is used as a temporary road meeting the construction site, and the cantilever pile support and the ground road hardening are not directly related. However, such construction has some problems as follows: (1) the cantilever piles are used as foundation pit supports, are generally incapable of being supported by adopting or unsuitable for adopting anchor rods to carry out combined support, and are required to be supported by adopting an inner support, but the support mode is uneconomical, and under the condition that no support or anchor is adopted, the pile diameters of the cantilever piles are generally larger, and soil bodies embedded under the pits are longer, so that the construction cost is high; (2) the hardened road area is large, and the hardened road area and the supporting structure cannot be considered uniformly, so that the hardened road area is wasted from the whole engineering; (3) a single cantilever pile supports, with a certain degree of safety risk.
Disclosure of Invention
The utility model aims at solving the defects existing in the prior art, and provides an integrated cantilever pile supporting structure utilizing a hardened road.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an utilize integrated cantilever pile supporting construction of hardening road, includes foundation ditch body, locates side slope body and the integration supporting part of foundation ditch body periphery, and the integration supporting part includes the cantilever pile body of two or more following foundation ditch body medial surface embedding to foundation ditch body bottom, keeps the level unanimous hardening road body with foundation ditch body top, two or more anchor piles that set up in the side slope body;
the hardened road body is arranged on the top surface of the slope body.
Preferably: the cantilever pile body and the hardened road body are all of reinforced concrete structures;
the anchor pile is a tensile short pile, and the tensile short pile is one of reinforced concrete or steel pipe piles and steel structures.
Preferably: the bottom of the hardened road body is in an irregular tooth shape.
Preferably: a pit side reinforcing area is arranged adjacent to the outer wall of the tensile short pile of the foundation pit body; the outer wall of the tensile short pile far away from the foundation pit body is provided with a soil side reinforcing area.
Preferably: the sections of the soil side reinforcing area and the pit side reinforcing area are fan-shaped.
Preferably: the peripheral soil body reinforcement mode of the tensile short pile is one of high-pressure grouting, high-pressure rotary spraying or stirring pile;
the inside of tensile stub is the surrounding type and is provided with a plurality of slip casting pipes, and a plurality of slip casting holes have been seted up to the outer wall of slip casting pipe from supreme equidistance in proper order down.
Preferably: the distance between two adjacent cantilever pile bodies is 2-5 times of the pile diameter of the cantilever pile bodies;
the length of the tensile short pile is 1/2, 1/3 or 2/3 of that of the cantilever pile body.
The beneficial effects of the utility model are as follows:
1. according to the utility model, an integrated combined supporting structure is formed by utilizing the anchor pile, the cantilever pile body and the hardened road body, so that the safety of foundation pit supporting operation is improved, the safety coefficient of the side slope body is greatly improved, the three are mutually cooperated to play a role in improving the stability and the use safety of the supporting structure, the supporting firmness can be ensured without overlong the length of the cantilever pile body embedded into the bottom of the foundation pit, the total length of the cantilever pile body seen from the side surface is not specially designed to be overlong, the pile diameter of the cantilever pile body and the depth of the cantilever pile body embedded into the foundation pit are reduced, and therefore, the effects of reducing the construction cost of the supporting structure and shortening the construction time are achieved.
2. According to the utility model, the bottom of the hardened road body is in an irregular tooth shape, so that the friction force between the hardened road body and a slope soil body is increased, a certain lateral pulling force is generated on the cantilever pile body, and the support stability of the cantilever pile body is improved; the tensile short piles generate larger tension to the cantilever pile body through the hardened road body, so that the supporting stability of the cantilever pile body is further improved.
3. According to the utility model, the high-pressure grouting mode is adopted to enable the high-pressure grouting body to pass through the grouting holes of the grouting pipe, so that soil around the anti-short piles is reinforced, and a soil side reinforcing area and a pit side reinforcing area are formed, so that the soil around the anti-short piles is reinforced, the operation is simple, the construction is convenient, and the stability and the use safety of the supporting structure are greatly improved.
4. According to the utility model, the reinforcement bar binding means are adopted to sequentially connect the reinforcement bar in the hardened road body and the reinforcement bar at the top end of the cantilever pile body and the reinforcement bar at the top end of the tensile short pile in a whole, and finally, the hardened road body, the top end of the cantilever pile body and the top end of the tensile short pile are subjected to integrated concrete pouring, so that the cantilever pile body and the hardened road body, the tensile short pile and the hardened road body are integrated, and as the hardened road body and the top end of the cantilever pile body are integrally poured, the top ground of the foundation pit body has no gap, and rainwater is prevented from penetrating into the slope soil.
5. According to the utility model, by adjusting the construction parameters of the tensile short piles, the pit side reinforcing areas, the soil side reinforcing areas and the hardened road body, the tensile force of the tensile short piles and the hardened road body on the cantilever pile body can be greatly improved, so that the safety coefficient of supporting the side slope structure is increased, the foundation pit supporting depth is improved, the pile diameter and pile length of the cantilever pile body are reduced, the reinforcement amount of the cantilever pile body is reduced, and the like.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:
FIG. 1 is a schematic cross-sectional view of an integrated cantilever pile supporting structure using a hardened road according to the present utility model;
FIG. 2 isbase:Sub>A schematic view of an A-A cross-sectional structure of an integrated cantilever pile supporting structure usingbase:Sub>A hardened road according to the present utility model;
fig. 3 is a schematic top view of an integrated cantilever pile supporting structure using a hardened road according to the present utility model.
In the figure: 1 foundation pit body, 2 cantilever pile bodies, 3 hardening road body, 4 tensile stub, 5 soil side reinforcing area, 6 pit side reinforcing area, 7 side slope soil mass, 8 slip casting pipe, 801 slip casting hole.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1:
an integrated cantilever pile supporting structure utilizing a hardened road is shown in fig. 1, and comprises a foundation pit body 1, a side slope body 7 arranged on the periphery of the foundation pit body 1 and an integrated supporting part used for supporting the foundation pit body 1, wherein the integrated supporting part comprises a plurality of cantilever pile bodies 2 embedded into the bottom of the foundation pit body 1 along the inner side surface of the foundation pit body 1, a hardened road body 3 which is kept horizontal and consistent with the top end of the foundation pit body 1, and a plurality of anchor piles inserted into the side slope body 7 and used for ensuring the connection stability of the cantilever pile bodies 2 and the hardened road body 3;
the anchor pile, the cantilever pile body 2 and the hardened road body 3 are utilized to form an integrated combined supporting structure, the safety of foundation pit supporting operation is improved, the anchor pile, the cantilever pile body 2 and the hardened road body are mutually cooperated to play a role, the supporting firmness can be ensured without overlong length of the cantilever pile body 2 embedded into the bottom of the foundation pit, and the total length of the cantilever pile body 2 is not required to be specially designed from the side, so that the effects of reducing the construction cost of the supporting structure and shortening the construction time are achieved.
Preferably, the hardened road body 3 is laid on the top face of the slope body 7.
Preferably, the distance between two adjacent cantilever pile bodies 2 is 2-5 times of the pile diameter of the cantilever pile bodies 2;
furthermore, the cantilever pile body 2 is of a reinforced concrete structure;
preferably, the connection construction method of the cantilever pile body 2 and the hardened road body 3 comprises the following steps:
a1: the steel bars at the top end of the cantilever pile body 2 and the steel bars in the hardened road body 3 are connected into a whole by adopting a steel bar binding means, and are locally reinforced so as to ensure the firmness when the cantilever pile body 2 and the hardened road body 3 are connected;
a2: adopting an integrated concrete pouring method to construct the top end of the cantilever pile body 2 and the hardened road body 3 together; so that the cantilever pile body 2 is integrated with the hardened road body 3.
Further, the hardened road body 3 is a reinforced concrete structure;
preferably, the bottom of the hardened road body 3 is in an irregular tooth shape, so that the friction force between the hardened road body 3 and the slope soil body 7 is increased, a certain lateral pulling force is generated on the cantilever pile body 2, and the support stability of the cantilever pile body 2 is improved.
Further, the anchor piles may be tensile short piles 4 with the same number as the cantilever pile bodies 2, the tensile short piles 4 are one of reinforced concrete, steel pipe piles and steel structures, and preferably, the tensile short piles 4 are reinforced concrete structures in the embodiment;
preferably, the length of the tensile short pile 4 can be 1/2, 1/3 or 2/3 of the cantilever pile body 2;
preferably, the method for constructing the connection between the hardened road body 3 and the tensile short piles 4 comprises the following steps:
b1: connecting the steel bars at the top end of the tensile short pile 4 with the steel bars in the hardened road body 3 into a whole by adopting a steel bar binding means, and carrying out local reinforcement;
b2: adopting an integrated concrete pouring method to jointly construct the top end of the anti-short pile 4 and the hardened road body 3; so that the tensile stud 4 forms an integrated structure with the hardened road body 3. The tensile short piles 4 generate larger tensile force to the cantilever pile body 2 through the hardened road body 3, so that the support stability of the cantilever pile body 2 is further improved.
Preferably, the reinforced concrete structure comprises transverse steel bars and longitudinal steel bars, wherein the transverse steel bars and the longitudinal steel bars are screw-thread steel bars, the diameters of the transverse steel bars and the longitudinal steel bars are more than or equal to 10mm, the distance between the longitudinal steel bars is less than 300mm, the distance between the transverse steel bars is less than 500mm, and the longitudinal steel bars are arranged within the range of 1/3 of the thickness below the top surface of the surface layer; the strength of the reinforced concrete structure is ensured.
In order to consolidate soil around the anti-stretching short piles 4, as shown in fig. 1-3, pit side reinforcing areas 6 are arranged adjacent to the outer walls of the anti-stretching short piles 4 of the foundation pit body 1; the outer wall of the tensile short pile 4 far away from the foundation pit body 1 is provided with a soil side reinforcing area 5;
preferably, the pit-side reinforcing area 6 has a fan-shaped cross section.
Preferably, the soil-side reinforcing region 5 has a fan-shaped cross section.
The reinforcing mode of the soil around the tensile short piles 4 comprises high-pressure grouting, high-pressure rotary spraying or stirring piles and the like, and the grouting position is arranged on the outer side of the tensile short piles 4 so as to improve the tension of the tensile short piles 4 to the cantilever pile body 2.
Further, preferably, high-pressure grouting is performed, a plurality of grouting pipes 8 are arranged in the tensile short piles 4 in a surrounding mode, a plurality of grouting holes 801 are formed in the outer wall of each grouting pipe 8 in an equidistant mode from bottom to top in sequence, and the grouting holes 801 are longitudinally arranged at intervals along the grouting pipes 8; the high-pressure grouting mode is adopted to enable the high-pressure slurry to pass through the grouting holes 801 of the grouting pipe 8 to strengthen soil around the anti-short piles 4, so that a soil side strengthening area 5 and a pit side strengthening area 6 are formed.
In the embodiment, the anchor pile, the cantilever pile body 2 and the hardened road body 3 are utilized to form an integrated combined supporting structure, so that the safety of foundation pit supporting operation is improved, and the safety coefficient of the side slope body 7 is greatly improved; because the hardened road body 3 and the top end of the cantilever pile body 2 are integrally poured, the ground at the top of the foundation pit body 1 is seamless, and rainwater is prevented from penetrating into the slope soil body 7. The anchor pile, the cantilever pile body 2 and the hardened road body 3 are mutually cooperated to play a role in reducing the pile diameter of the cantilever pile body 2 and the depth of embedding in a foundation pit, thereby playing the roles of reducing the construction cost of the supporting structure and shortening the construction time.
According to the utility model, by adjusting the construction parameters of the tensile short piles 4, the pit side reinforcing areas 6, the soil side reinforcing areas 5 and the hardened road body 3, the tensile force of the tensile short piles 4 and the hardened road body 3 on the cantilever pile body 2 can be greatly improved, so that the safety coefficient of supporting the side slope structure is increased, the foundation pit supporting depth is improved, the pile diameter and pile length of the cantilever pile body 2 are reduced, the reinforcement amount of the cantilever pile body 2 is reduced, and the like; the tensile effect of the hardened road body 3 on the cantilever pile body 2 can be effectively exerted, and the tensile effect is more obvious when a temporary building or a structure is arranged on the hardened road body 3.
Example 2:
the construction method of the integrated cantilever pile supporting structure utilizing the hardened road, as shown in fig. 1-3, comprises the following steps:
s1: constructing the cantilever pile body 2 to stand, and then performing concrete chiseling on the top end of the cantilever pile body 2;
s2: constructing a tensile short pile 4 in the side slope body 7 to fix the tensile short pile, and then performing concrete chiseling on the top end of the tensile short pile 4;
s3: the grouting pipe 8 is arranged on the inner side of the tensile short pile 4 in a surrounding mode, and high-pressure grouting reinforcement is carried out on an outside soil body after the tensile short pile 4 is formed;
s4: the hardened road body 3 is subjected to base treatment to form an irregular tooth shape;
s5: adopting a reinforcement binding means to sequentially connect the reinforcement in the hardened road body 3 with the reinforcement at the top end of the cantilever pile body 2 and the reinforcement in the hardened road body 3 with the reinforcement at the top end of the tensile short pile 4 into a whole;
s6: adopting an integrated concrete pouring method to perform joint pouring construction on the hardened road body 3, the top end of the cantilever pile body 2 and the top end of the tensile short pile 4;
s7: and obtaining a finished product of the support structure after the concrete is coagulated and cured.
Preferably, the grouting holes 801 are plugged before grouting, and the plugging mode is to use adhesive tapes to prevent concrete slurry from entering, and the grouting holes are flushed by high-pressure grouting after grouting.
S3, plugging the grouting holes 801 before grouting.
In the construction process of the embodiment, after the corresponding cantilever pile body 2 and the tensile short pile 4 are arranged in the foundation pit body 1 and the side slope body 7, the soil outside the tensile short pile 4 is subjected to high-pressure grouting to strengthen the periphery, then the base of the hardened road body 3 is treated, the reinforcing steel bars in the hardened road body 3, the reinforcing steel bars at the top end of the cantilever pile body 2 and the reinforcing steel bars in the hardened road body 3 and the reinforcing steel bars at the top end of the tensile short pile 4 are sequentially connected into a whole by adopting a reinforcing steel bar binding means, and finally, the hardened road body 3, the top end of the cantilever pile body 2 and the top end of the tensile short pile 4 are subjected to integrated concrete pouring, so that the anchor pile, the cantilever pile body 2 and the hardened road body 3 are combined to form an integrated combined supporting structure, the safety of the foundation pit supporting operation is improved, the safety coefficient of the side slope body 7 is greatly improved, the operation is simple, the construction is convenient, and the stability and the use safety of the supporting structure are greatly improved.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. The integrated cantilever pile supporting structure comprises a foundation pit body (1), a side slope body (7) arranged on the periphery of the foundation pit body (1) and an integrated supporting part, and is characterized in that the integrated supporting part comprises more than two cantilever pile bodies (2) embedded into the bottom of the foundation pit body (1) along the inner side surface of the foundation pit body (1), a hardened road body (3) which is horizontally consistent with the top end of the foundation pit body (1), and more than two anchor piles arranged in the side slope body (7);
the hardened road body (3) is arranged on the top surface of the side slope body (7).
2. The integrated cantilever pile supporting structure utilizing the hardened road according to claim 1, wherein the cantilever pile body (2) and the hardened road body (3) are both reinforced concrete structures;
the anchor pile is a tensile short pile (4), and the tensile short pile (4) is one of reinforced concrete or steel pipe piles and steel structures.
3. An integrated cantilever pile supporting structure using a hardened road according to claim 2, characterized in that the bottom of the hardened road body (3) is irregularly toothed.
4. An integrated cantilever pile supporting structure using hardened roads according to claim 2, characterized in that a pit-side reinforcing area (6) is provided adjacent to the outer wall of the tensile stub (4) of the foundation pit body (1); the outer wall of the tensile short pile (4) far away from the foundation pit body (1) is provided with a soil side reinforcing area (5).
5. An integrated cantilever pile supporting structure using hardened roads according to claim 4, characterized in that the sections of the soil-side reinforcing area (5) and pit-side reinforcing area (6) are both sector-shaped.
6. The integrated cantilever pile supporting structure utilizing the hardened road according to claim 4, wherein the peripheral soil body reinforcing mode of the tensile short piles (4) is one of high-pressure grouting, high-pressure rotary spraying or stirring piles;
the inside of tensile stub (4) is the surrounding type and is provided with a plurality of slip casting pipe (8), and a plurality of slip casting holes (801) have been seted up to the outer wall of slip casting pipe (8) from bottom to top in proper order to the equidistance.
7. An integrated cantilever pile supporting structure utilizing hardened roads according to claim 2, characterized in that the distance between two adjacent cantilever pile bodies (2) is 2-5 times the pile diameter of the cantilever pile bodies (2);
the length of the tensile short pile (4) is 1/2, 1/3 or 2/3 of that of the cantilever pile body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222994058.5U CN218894091U (en) | 2022-11-10 | 2022-11-10 | Utilize integrated cantilever pile supporting construction of hardening road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222994058.5U CN218894091U (en) | 2022-11-10 | 2022-11-10 | Utilize integrated cantilever pile supporting construction of hardening road |
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| CN218894091U true CN218894091U (en) | 2023-04-21 |
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| CN202222994058.5U Active CN218894091U (en) | 2022-11-10 | 2022-11-10 | Utilize integrated cantilever pile supporting construction of hardening road |
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- 2022-11-10 CN CN202222994058.5U patent/CN218894091U/en active Active
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