CN223176713U - Precast reinforced concrete composite structure support piles - Google Patents
Precast reinforced concrete composite structure support pilesInfo
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- CN223176713U CN223176713U CN202422437316.9U CN202422437316U CN223176713U CN 223176713 U CN223176713 U CN 223176713U CN 202422437316 U CN202422437316 U CN 202422437316U CN 223176713 U CN223176713 U CN 223176713U
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Abstract
The utility model relates to a precast reinforced concrete combined structure support pile which comprises a concrete row pile formed by a plurality of concrete mixing piles, and a plurality of precast piles which enable the concrete mixing piles to form a whole. The concrete row piles are at least provided with two groups, the multiple groups of concrete row piles are arranged on the periphery side of the foundation pit in parallel, precast piles are arranged along the arrangement direction of the concrete row piles, and each precast pile is inserted into the multiple groups of adjacent concrete row piles. The precast pile comprises an I-shaped pile of precast reinforced concrete and a plurality of V-shaped piles of precast reinforced concrete. The I-shaped piles are at least positioned in the two rows of concrete mixing piles. And a V-shaped pile is arranged in each two adjacent I-shaped piles. The concrete pile is characterized in that a plurality of precast piles are arranged in the concrete pile rows to form a whole with a plurality of concrete mixing piles, the stressed area is increased, and the pile body strength and stability can be increased, so that the whole shear strength of the support pile is improved, and the performance of the support pile is fully exerted.
Description
Technical Field
The utility model relates to the technical field of foundation pit support, in particular to a support pile with a prefabricated reinforced concrete combined structure.
Background
The foundation pit row pile support is suitable for various soil conditions and complex environments, particularly in urban central areas, slope laying is not allowed, and the influence on peripheral buildings and facilities can be reduced. The circular cast-in-place pile is mainly used for supporting, bearing lateral pressures of all directions are the same, and foundation pit soil pressure has unidirectionality and is along the direction of the inner side of a horizontal foundation pit, so that the performance of the circular reinforced concrete cast-in-place pile cannot be fully exerted, and the shearing strength of the supporting pile is poor.
It is desirable to provide a precast reinforced concrete composite structure support pile to solve the above-mentioned problems.
Disclosure of utility model
The utility model relates to a precast reinforced concrete combined structure support pile, which is characterized in that a plurality of precast piles are arranged in a row of concrete row piles to form a whole of a plurality of concrete mixing piles, the stressed area of an I-shaped pile and a V-shaped pile can be increased, and the strength and the stability of a pile body can also be increased by the I-shaped pile and the V-shaped pile, so that the integral shear strength of the support pile is improved, the performance of the support pile is fully exerted, and the problem that the shear strength is poor due to the fact that the round reinforced concrete filling row piles need to bear foundation pit soil pressure in the prior art is solved.
The prefabricated reinforced concrete combined structure supporting pile comprises a concrete row pile formed by a plurality of concrete mixing piles and a plurality of precast piles enabling the concrete mixing piles to form a whole, wherein at least two groups of the concrete row piles are arranged, a plurality of groups of the concrete row piles are arranged on the outer peripheral side of a foundation pit in parallel, the precast piles are arranged along the arrangement direction of the concrete row piles, each precast pile is inserted into a plurality of groups of adjacent concrete row piles, each precast pile comprises an I-shaped pile of prefabricated reinforced concrete and a V-shaped pile of the prefabricated reinforced concrete, the I-shaped piles are at least located in two rows of the concrete mixing piles, and one V-shaped pile is arranged in each two adjacent I-shaped piles.
Furthermore, the central axis of each I-shaped pile is parallel to the central axes of the concrete mixing piles which are arranged in parallel, so that the I-shaped piles are convenient to install, the construction efficiency is improved, and the bending resistance performance can also be improved.
Further, the width of the I-shaped piles along the arrangement direction of the concrete row piles is smaller than the diameter of the concrete mixing piles, the thickness of the I-shaped piles along the arrangement direction perpendicular to the concrete row piles is smaller than 3 times of the radius of the concrete mixing piles, the cost is saved, the steel bars are guaranteed to be completely wrapped by the concrete, and the service life and the shear strength of the I-shaped piles are prolonged.
Further, two groups of concrete mixing piles are arranged between two adjacent I-shaped piles at intervals, so that the cost can be saved.
Further, the I-shaped pile comprises a plurality of first main reinforcements and a plurality of first stirrups. The plurality of first main ribs are vertically arranged at intervals to enclose the shape of the I-shaped pile. The plurality of first stirrups are distributed along the length direction interval of a plurality of first main reinforcements, every first stirrup all fixed connection in a plurality of first main reinforcements is with the outside of horizontal plane in order to form the cross-section and be I shape steel reinforcement cage. The I-shaped reinforcement cage is buried in the concrete row piles and integrally formed with the corresponding concrete mixing piles in a coagulation mode. The I-shaped reinforcement cage can be prefabricated in a factory, avoids the time and the process of in-situ pouring, has simple structure and high construction speed, and can greatly shorten the construction period.
Further, the opening side of the V-shaped pile is arranged towards the foundation pit, so that the stress area is increased, and the shearing resistance is dispersed.
Further, the thickness of the V-shaped piles along the direction perpendicular to the arrangement direction of the concrete row piles is smaller than the thickness of the I-shaped piles along the direction perpendicular to the arrangement direction of the concrete row piles, so that cost is saved, the V-shaped piles are convenient to install, the installation density can be increased, and the bearing strength is improved.
Furthermore, both sides of the opening side of the V-shaped pile are connected with the corresponding inner side faces of the I-shaped pile, the horizontal extrusion force is directly dispersed to the I-shaped pile, the strength of the I-shaped pile is higher, and the protection of the concrete mixing pile is facilitated.
Further, the V-shaped pile comprises a plurality of second main reinforcements and a plurality of second stirrups. The plurality of second main reinforcements are vertically arranged at intervals to form a V-shaped structure, and the plurality of second stirrups are arranged at intervals along the length direction of the second main reinforcements. Each second stirrup is fixedly connected to the outer side surfaces of the plurality of second main reinforcements and the horizontal plane so as to form a reinforcement cage with a V-shaped section. The V-shaped reinforcement cage is buried between two adjacent I-shaped piles and integrally formed with the two adjacent I-shaped piles and the corresponding concrete mixing piles in a condensing mode. The V-shaped reinforcement cage can be prefabricated in a factory, the time and the process of in-situ pouring are avoided, the structure is simple, the construction speed is high, and the construction period can be greatly shortened.
Further, the embedded depth of the precast pile along the longitudinal direction is the same as that of the concrete mixing pile, and is larger than the excavation depth of the foundation pit, so that the depth and the safety performance of support are improved.
Compared with the prior art, the prefabricated reinforced concrete composite structure support pile has the beneficial effects that the prefabricated reinforced concrete composite structure support pile comprises a concrete row pile formed by a plurality of concrete mixing piles and a plurality of precast piles which enable the concrete mixing piles to form a whole. The concrete row piles are at least provided with two groups, the multiple groups of concrete row piles are arranged on the periphery side of the foundation pit in parallel, precast piles are arranged along the arrangement direction of the concrete row piles, and each precast pile is inserted into the multiple groups of adjacent concrete row piles. The precast pile comprises an I-shaped pile of precast reinforced concrete and a plurality of V-shaped piles of precast reinforced concrete. The I-shaped piles are at least positioned in the two rows of concrete mixing piles. And a V-shaped pile is arranged in each two adjacent I-shaped piles. The concrete pile comprises a pile body, a V-shaped pile, a pile body, a precast pile and a pile body, wherein the precast pile is arranged in a row of concrete pile bodies, the precast pile is arranged in the row of concrete pile bodies to form a whole, the pile body strength and stability can be increased, the whole shear strength of the pile body is improved, the performance of the pile body can be fully exerted, the V-shaped pile can convert shearing resistance into part of extrusion force along the length direction of a foundation pit, the shearing resistance exerted by a soil body is reduced, the shear strength and the safety performance can be improved, the stressed area can be also improved, and the problem that the shear strength is poor due to the fact that the round reinforced concrete pile body needs to bear the soil pressure of the foundation pit in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present utility model.
Fig. 1 is a schematic structural view of an embodiment of a precast reinforced concrete combined structural support pile according to the present utility model.
FIG. 2 is a schematic cross-sectional view of the structure A-A of FIG. 1.
Fig. 3 is a schematic structural view of an embodiment of an i-shaped reinforcement cage of the precast reinforced concrete composite structural support pile of the present utility model.
Fig. 4 is a schematic structural view of an embodiment of a V-shaped reinforcement cage of the precast reinforced concrete composite structural support pile of the present utility model.
In the figure, a prefabricated reinforced concrete combined structure supporting pile, a concrete stirring pile, a precast pile, a 31I-shaped pile, a 311I-shaped reinforcement cage, 3111, a first main reinforcement, 3112, a first stirrup, a 32V-shaped pile, 321, a V-shaped reinforcement cage, 3211, a second main reinforcement, 3212, a second stirrup, 4, a foundation pit, 5, soil body and 6 connecting beams are shown.
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.
The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present utility model only with reference to the orientation of the drawings, and are not intended to limit the present utility model.
In the drawings, like structural elements are denoted by like reference numerals.
Referring to fig. 1 and 2, in the present embodiment, the precast reinforced concrete combined structure supporting pile 1 includes a concrete row pile composed of a plurality of concrete mixing piles 2 and a plurality of precast piles 3 for integrating the plurality of concrete mixing piles 2. The concrete row piles are at least provided with two groups, a plurality of groups of concrete row piles are arranged on the periphery side of the foundation pit 4 in parallel, precast piles 3 are arranged along the arrangement direction of the concrete row piles, and each precast pile 3 is inserted into a plurality of groups of adjacent concrete row piles.
Specifically, the precast piles 3 are arranged in the concrete row piles in parallel and at intervals, so that the central axis of the precast pile 3 is perpendicular to the length direction of the concrete row piles. One side of the precast pile 3 is positioned in the concrete row pile near the foundation pit 4, and the other side of the precast pile 3 is positioned in the concrete row pile at the outermost side. The precast pile 3 forms a whole with the multi-row concrete row pile, and moreover, the setting of one side of the supporting surface super soil body of precast pile 3 can improve the whole firmness degree of a plurality of concrete mixing piles 2.
In this embodiment, referring to fig. 1 and 3, the precast pile 3 includes an i-shaped pile 31 of precast reinforced concrete and a plurality of V-shaped piles 32 of precast reinforced concrete. The i-piles 31 are located at least in two rows of concrete mixing piles 2. A V-shaped pile 32 is disposed in each of the two adjacent i-shaped piles 31. The V-shaped piles 32 can convert shearing resistance into a part of extrusion force along the length direction of the foundation pit 4, so that shearing resistance applied by soil is reduced, thereby improving shearing strength and safety performance and improving stressed area.
The central axis of each i-shaped pile 31 is parallel to the central axes of the plurality of parallel concrete mixing piles 2, so that the i-shaped piles can be conveniently installed, the construction efficiency is improved, and the bending resistance performance can also be improved.
Wherein the cross section of the i-shaped pile 31 is configured in an i-shaped structure. Specifically, the two sides of the i-shaped piles 31 are provided with strip structures, and the length direction of the i-shaped piles is consistent with the length direction of the concrete row piles. The connection sections of the i-piles 31 connecting the two sides are also arranged in a strip-shaped structure, and the length direction of the connection sections is crossed with the length direction of the two sides. In this embodiment, preferably, the length direction of the connection section is perpendicular to the length directions of the two sides of the connection section, so that the overall bearing strength can be improved.
The width of the I-shaped piles 31 along the arrangement direction of the concrete row piles is smaller than the diameter of the concrete mixing piles 2, the thickness of the I-shaped piles 31 along the arrangement direction perpendicular to the concrete row piles is smaller than 3 times of the radius of the concrete mixing piles 2, the cost is saved, the steel bars are guaranteed to be completely wrapped by the concrete, and the service life and the shear strength of the I-shaped piles 31 are prolonged.
Preferably, two groups of concrete mixing piles 2 are arranged between two adjacent I-shaped piles 31 at intervals, so that the cost can be saved. The two sets of concrete mixing piles 2 are filled with one V-shaped pile 32.
The i-shaped pile 31 includes a plurality of first main reinforcements 3111 and a plurality of first stirrups 3112. The plurality of first main ribs 3111 are vertically spaced apart to enclose the shape of the i-shaped piles 31. The first stirrups 3112 are distributed along the length direction of the first main ribs 3111 at intervals, and each first stirrup 3112 is fixedly connected to the outer sides of the first main ribs 3111 on the same horizontal plane to form the reinforcement cage 311 with an I-shaped section. The I-shaped reinforcement cage 311 is buried in the concrete row piles and is integrally formed with the corresponding plurality of concrete mixing piles 2 in a coagulation mode. The I-shaped reinforcement cage 311 can be prefabricated in a factory, then the prefabricated I-shaped reinforcement cage 311 is placed into the corresponding concrete mixing pile 2, concrete in the prefabricated I-shaped reinforcement cage is integrally coagulated and formed, the time and the process of in-situ pouring are avoided, the construction is simple, the construction speed is high, and the construction period can be greatly shortened. The i-shaped pile 31 comprises an i-shaped reinforcement cage 311 and concrete filled in the i-shaped reinforcement cage 311, and a concrete protection layer on the outer periphery of the i-shaped reinforcement cage 311.
In this embodiment, referring to fig. 1 and 4, in order to avoid excessive pressure, measures may be taken to disperse the shearing resistance of the soil body, so as to reduce the shearing resistance of the support piles, thereby improving the safety of excavation of the foundation pit 4. Specifically, the cross section of the V-shaped piles 32 is provided in a V-shaped structure. Two adjacent I-shaped piles 31 are internally provided with a V-shaped pile 32, and can convert shearing resistance into a part of extrusion force along the length direction of the foundation pit 4, so that the shearing resistance exerted by soil is reduced, and the shearing resistance and the safety performance can be improved.
The open side of the V-shaped piles 32 is arranged toward the foundation pit 4, so that the stress area is increased, and shearing resistance is dispersed.
The thickness of the V-shaped piles 32 along the direction perpendicular to the arrangement direction of the concrete row piles is smaller than that of the I-shaped piles 31 along the direction perpendicular to the arrangement direction of the concrete row piles, so that the cost is saved, the installation of the V-shaped piles 32 is facilitated, the installation density can be increased, and the bearing strength is improved.
Both sides of the opening side of the V-shaped pile 32 are connected with the inner side surfaces of the corresponding I-shaped piles 31, the horizontal extrusion force is directly dispersed to the I-shaped piles 31, the strength of the I-shaped piles 31 is higher, and the protection of the concrete mixing pile 2 is facilitated.
The V-shaped pile 32 includes a plurality of second main tendons 3211 and a plurality of second stirrups 3212. The plurality of second main reinforcements 3211 are vertically arranged at intervals to form a V-shaped structure, and the plurality of second stirrups 3212 are distributed at intervals along the length direction of the second main reinforcements 3211. Each second stirrup 3212 is fixedly connected to the outer sides of the plurality of second main reinforcements 3211 on the same horizontal plane to form a reinforcement cage 321 with a V-shaped section. The V-shaped reinforcement cage 321 is buried between two adjacent I-shaped piles 31 and is integrally formed with the two adjacent I-shaped piles 31 and the corresponding plurality of concrete mixing piles 2. The V-shaped reinforcement cage 321 can be prefabricated in a factory, so that the time and the process of in-situ pouring are avoided, the structure is simple, the construction speed is high, and the construction period can be greatly shortened. The V-shaped pile 32 comprises a V-shaped reinforcement cage 321 and concrete filled in the V-shaped reinforcement cage 321, and a concrete protection layer on the outer periphery of the V-shaped reinforcement cage 321.
The embedded depth of the precast pile 3 along the longitudinal direction is the same as that of the concrete mixing pile 2, and is larger than the excavation depth of the foundation pit 4, so that the supporting depth and the safety performance are improved. Specifically, the depths of the i-shaped piles 31 and the V-shaped piles 32 are larger than the excavation depth of the foundation pit 4.
The prefabricated reinforced concrete I-shaped piles 31 and the V-shaped piles 32 are industrially produced, the strength and stability of the pile body are ensured, and the quality is reliable. The precast reinforced concrete I-shaped piles 31 and the V-shaped piles 32 are all produced in a factory in a precast manner, so that the time and the process of in-situ casting are avoided, the construction is simple, the construction speed is high, and the construction period can be greatly shortened. Compared with the traditional reinforced concrete row pile matched with the concrete mixing pile waterproof curtain, the independent prefabricated reinforced concrete I-shaped pile 31 is combined with the concrete mixing pile 2, so that the construction cost is low, and the economic saving is realized. The on-site construction is low in noise and small in influence on the surrounding environment, the support can be supported, the effect of the waterproof curtain can be achieved, the effect of combining the waterproof wall with the support is achieved, and mud discharge is reduced.
Moreover, the I-shaped reinforcement cage 311 and the V-shaped reinforcement cage 321 are inserted into the concrete mixing pile 2 to form a whole, so that the waterproof curtain effect of the concrete mixing pile 2 is exerted, and the superior bending resistance mechanical properties of the precast reinforced concrete I-shaped pile 31 and the V-shaped pile 32 can be utilized to realize complementary advantages.
The concrete construction scheme of the precast reinforced concrete combined structure supporting pile 1 will be described in detail.
And (3) stirring and grouting the soil body of the foundation pit 4 to a designed preset depth by adopting a triaxial stirrer, moving to the next position after completion, continuing stirring the concrete pile, and inserting the prefabricated I-shaped reinforcement cage 311 and the V-shaped reinforcement cage 321 into the designed preset position of the concrete stirring pile 2 by adopting a precast pile driver before the initial setting of the concrete stirring pile 2, wherein the concrete stirring pile 2, the I-shaped pile 31 and the V-shaped pile 32 are solidified to form a whole. The water-stop curtain effect of the concrete mixing pile 2 and the mechanical properties of the I-shaped pile 31 and the V-shaped pile 32 can be fully exerted, the advantage complementation is realized, and the bending resistance and the shear strength of the soil body are increased.
1) The prefabricated I-shaped reinforcement cage 311 and V-shaped reinforcement cage 321 are produced and entered, wherein the factory determines the length and the size of the prefabricated I-shaped reinforcement cage 311 and V-shaped reinforcement cage 321 according to a design drawing, and the produced I-shaped reinforcement cage 311 and V-shaped reinforcement cage 321 are transported to a construction site;
2) Site leveling, namely performing site leveling before the construction of the concrete mixing pile 2, and removing hard objects on the surface in a construction area, in particular to the construction area of the concrete mixing pile 2;
3) Measuring and setting out, namely measuring and setting out a construction site according to the provided coordinate datum points and the requirements of a design drawing;
4) Digging a groove, namely digging the groove by adopting an excavator according to a control line of the enclosure edge of the foundation pit 4, and clearing underground barriers, wherein the residual soil of the digging groove is treated in time so as to ensure normal construction;
5) The guide rail installation, namely placing a guide rail in the excavated groove, and setting a construction pile mark so as to facilitate the construction and positioning of the concrete mixing pile 2, the precast reinforced concrete I-shaped pile 31 and the V-shaped pile 32;
6) The construction of the concrete mixing pile 2, namely adopting a triaxial stirrer to stir and slurry the soil body of the foundation pit 4 to a designed preset depth, and moving to the next position to continue the concrete pile stirring construction after the completion of the stirring;
7) The construction of the prefabricated reinforced concrete pile, namely, before the initial setting of the concrete mixing pile 2, respectively inserting a prefabricated I-shaped reinforcement cage 311 and a V-shaped reinforcement cage 321 into the designed preset positions of the concrete mixing pile 2 by adopting a prefabricated pile driver;
8) Curing the concrete mixing pile 2;
9) Binding and pouring the reinforced steel bars of the connecting beam 6 on the precast reinforced concrete pile top;
10 Foundation pit 4 earth excavation.
In this embodiment, the present utility model relates to a precast reinforced concrete composite structure supporting pile,
The precast reinforced concrete combined structure support pile comprises a concrete row pile formed by a plurality of concrete mixing piles, and a plurality of precast piles which enable the concrete mixing piles to form a whole. The concrete row piles are at least provided with two groups, the multiple groups of concrete row piles are arranged on the periphery side of the foundation pit in parallel, precast piles are arranged along the arrangement direction of the concrete row piles, and each precast pile is inserted into the multiple groups of adjacent concrete row piles. The precast pile comprises an I-shaped pile of precast reinforced concrete and a plurality of V-shaped piles of precast reinforced concrete. The I-shaped piles are at least positioned in the two rows of concrete mixing piles. And a V-shaped pile is arranged in each two adjacent I-shaped piles. The concrete pile comprises a pile body, a V-shaped pile, a pile body, a precast pile and a pile body, wherein the precast pile is arranged in a row of concrete pile bodies, the precast pile is arranged in the row of concrete pile bodies to form a whole, the pile body strength and stability can be increased, the whole shear strength of the pile body is improved, the performance of the pile body can be fully exerted, the V-shaped pile can convert shearing resistance into part of extrusion force along the length direction of a foundation pit, the shearing resistance exerted by a soil body is reduced, the shear strength and the safety performance can be improved, the stressed area can be also improved, and the problem that the shear strength is poor due to the fact that the round reinforced concrete pile body needs to bear the soil pressure of the foundation pit in the prior art is solved.
In summary, although the present utility model has been described in terms of the preferred embodiments, the above-mentioned embodiments are not intended to limit the utility model, and those skilled in the art can make various modifications and alterations without departing from the spirit and scope of the utility model, so that the scope of the utility model is defined by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422437316.9U CN223176713U (en) | 2024-10-09 | 2024-10-09 | Precast reinforced concrete composite structure support piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422437316.9U CN223176713U (en) | 2024-10-09 | 2024-10-09 | Precast reinforced concrete composite structure support piles |
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| Publication Number | Publication Date |
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| CN223176713U true CN223176713U (en) | 2025-08-01 |
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| CN202422437316.9U Active CN223176713U (en) | 2024-10-09 | 2024-10-09 | Precast reinforced concrete composite structure support piles |
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