Double-row pile supporting device

Abstract

The utility model relates to the technical field of double-row pile supporting, and discloses a double-row pile supporting device which comprises a cast-in-place pile, a jet grouting pile, a cantilever pile, a stand column and a supporting beam, the jet grouting pile is located in the cast-in-place pile, the top of the jet grouting pile and the top of the cast-in-place pile form an upper crown beam, and the stand column and the cantilever pile are arranged in an up-down butt joint mode. One end of the supporting beam is in butt joint with the upper crown beam, the other end of the supporting beam horizontally extends in the direction away from the upper crown beam, and the top of the stand column is in butt joint with the supporting beam. During supporting operation, the upper portion is supported through cooperation of the cast-in-place piles and the jet grouting piles, the lower portion is supported through the cantilever piles, a shared supporting structure is formed through cooperation of the stand columns extending upwards and the supporting beams, the supporting strength of the supporting device is improved, meanwhile, construction is easy and convenient, the supporting service life is long, in addition, the stand columns can be recycled, and the supporting cost is reduced.

Description

Technical Field

[0001] The utility model patent relates to the technical field of double-row pile support, and specifically, to a double-row pile support device. Background Art

[0002] With the acceleration of urbanization, land resources are becoming increasingly scarce, and the sites for public and civil buildings are becoming increasingly narrow, so the height of buildings is getting higher and higher; in public and civil buildings, especially high-rise or super-high-rise buildings, as the height increases, the depth of the underground structure also increases, and the corresponding foundation pit slope support often uses vertical support with reinforced concrete piles to ensure that the slope is not prone to collapse.

[0003] At present, for foundation pits with graded vertical support, cast-in-place piles, internal supports and prestressed anchor cables are generally used as support structures; for example, the prior patent with publication number CN113356239A discloses a slope double-row pile plus anchor cable support structure, including a front row of piles and a rear row of piles vertically inserted in the slope, the top of the front row of piles is connected to a front crown beam, the top of the rear row of piles is connected to a rear crown beam, and the bottom of the front row of piles and the bottom of the rear row of piles respectively pass downward through the potential sliding surface in the slope; an inclined anchor cable is penetrated in the slope, the inner end of the anchor cable is penetrated in the slope and passes through the potential sliding surface of the slope, the outer end of the anchor cable passes through the rear crown beam, the outer end of the anchor cable is connected to an anchor head, the anchor head is fixed on the rear crown beam, and is encapsulated in the rear crown beam; along the direction in which the anchor cable penetrates the slope, the anchor cable is arranged downwardly.

[0004] In the prior art, the construction of prestressed anchor cables is cumbersome and the prestressed anchor cables are susceptible to corrosion, resulting in a short support life. At the same time, the support strength of the support system formed by the combination of cast-in-place piles and internal supports is insufficient to meet the needs of graded vertical support. Utility Model Content

[0005] The utility model aims to provide a double-row pile supporting device, aiming to solve the problem of insufficient supporting strength of the supporting device in the prior art.

[0006] The utility model is implemented as follows: a double-row pile supporting device comprises a cast-in-place pile, a jet grouting pile, a cantilever pile, a column and a support beam, wherein the jet grouting pile is located inside the cast-in-place pile, and the top of the jet grouting pile and the top of the cast-in-place pile form an upper crown beam, the column and the cantilever pile are butt-jointed in an up-and-down manner, and the cantilever pile and the cast-in-place pile are arranged correspondingly at row intervals, one end of the support beam is butt-jointed in an upper crown beam, and the other end of the support beam is horizontally extended in a direction away from the upper crown beam, and the top of the column is butt-jointed in an upper crown beam.

[0007] Furthermore, the top of the cantilever pile forms a lower crown beam, the columns are arranged longitudinally, the lower parts of the columns are butt-jointed with the lower crown beam, and the columns and the cantilever pile are arranged correspondingly along the central axis.

[0008] Furthermore, the double-row pile supporting device includes a beam plate, the beam plate and the lower crown beam are arranged in a flat and fixed manner, and the column passes through the beam plate and is arranged in a butt-jointed and fixed manner with the lower crown beam.

[0009] Furthermore, the double-row pile supporting device includes four fixed plates, and the fixed plates are arranged in a triangular shape; the lower part of the fixed plate is arranged flat and fixed with the beam plate, the side part of the fixed plate is arranged flat and fixed with the column, and the four fixed plates are arranged correspondingly at four corners along the circumferential direction of the column.

[0010] Furthermore, the beam slab has a plurality of plate reinforcements inside, and the lower crown beam has a plurality of beam reinforcements, each of the plate reinforcements extends through the lower crown beam, and the plate reinforcements and the beam reinforcements are fixedly arranged.

[0011] Furthermore, the double-row pile supporting device comprises a plurality of the cantilever piles and a plurality of the columns, the cantilever piles are arranged in a row and in a corresponding manner, and adjacent cantilever piles are arranged in a bite-engaged manner to form a lower curtain; the columns are arranged in a row and in a corresponding manner, and the lower curtains are arranged one-to-one with the columns.

[0012] Furthermore, the double-row pile support device includes a plurality of the cast-in-place piles and a plurality of the rotary jet piles, and each of the cast-in-place piles is arranged in a one-to-one correspondence with each of the rotary jet piles to form a support pile, the support piles are arranged in an interlocking manner, and the upper crown beam is synchronously arranged with each of the support piles in an upper and lower fixed manner.

[0013] Furthermore, the double-row pile supporting device comprises a plurality of the supporting beams and a plurality of connecting beams, the supporting beams are arranged in a corresponding interval, and the supporting beams are synchronously connected and fixedly arranged with the upper crown beam; the two ends of the connecting beams are respectively connected and fixedly arranged with the adjacent supporting beams, and the connecting beams are arranged horizontally.

[0014] Furthermore, the foundation pit has a foundation pit bottom elevation, the upper parts of the cast-in-place piles and the upper parts of the rotary jet piles are respectively arranged above the foundation pit bottom elevation, the lower crown beam is arranged corresponding to the foundation pit bottom elevation, the cantilever piles are arranged below the foundation pit bottom elevation, and the columns are arranged above the foundation pit bottom elevation.

[0015] Furthermore, the double-row pile supporting device comprises a plurality of the cantilever piles and a plurality of the columns, and each of the cantilever piles and each of the columns are arranged in one-to-one correspondence; along the direction away from the slope, each of the cantilever piles is arranged in a corresponding interval, each of the columns is arranged in a corresponding interval, and each of the columns is arranged in the same horizontal plane, and the support beam is synchronously connected to each of the columns.

[0016] Compared with the prior art, the double-row pile support device provided by the utility model, during the support operation, the upper part is supported by the cooperation of cast-in-place piles and rotary jet piles, and the lower part is supported by cantilever piles, and then a common support structure is formed by the cooperation of the upwardly extending columns and the support beams, thereby improving the support strength of the support device. At the same time, the construction is simple and the support service life is long. In addition, the columns can be recycled to reduce the support cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of a double-row pile support device provided by the utility model;

[0018] Figure 2 It is a three-dimensional schematic diagram of the coordination of the beam plate and the columns of the double-row pile supporting device provided by the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0021] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] Reference Figure 1 and 2 As shown, it is a preferred embodiment provided by the utility model.

[0023] A double-row pile support device comprises a bored pile 1, a jet grouting pile 2, a cantilever pile 3, a column 4 and a support beam 5. The jet grouting pile 2 is located inside the bored pile 1, and the top of the jet grouting pile 2 and the top of the bored pile 1 form an upper crown beam 6. The column 4 and the cantilever pile 3 are butt-jointed in an up-and-down manner, and the cantilever pile 3 and the bored pile 1 are arranged correspondingly at row intervals. One end of the support beam 5 is butt-jointed with the upper crown beam 6, and the other end of the support beam 5 is horizontally extended in a direction away from the upper crown beam 6, and the top of the column 4 is butt-jointed with the support beam 5.

[0024] In the above-mentioned double-row pile support device, during the support operation, the upper part is supported by the bored piles 1 and the rotary jet piles 2, and the lower part is supported by the cantilever piles 3. Then, the upwardly extending columns 4 and the support beams 5 cooperate to form a common support structure, thereby improving the support strength of the support device. At the same time, the construction is simple and the support service life is long. In addition, the columns 4 can be recycled to reduce the support cost.

[0025] The top of the cantilever pile 3 forms a lower crown beam 7, the column 4 is arranged longitudinally, the lower part of the column 4 is butt-jointed with the lower crown beam 7, and the column 4 and the cantilever pile 3 are arranged correspondingly along the central axis; under the action of the lower crown beam 7, the stability of the column 4 is improved and the support strength of the column 4 is guaranteed.

[0026] The upright column 4 is a steel upright column 4, so that it has sufficient supporting strength to ensure the support of the slope.

[0027] The double-row pile support device includes a beam plate 8, which is laid flat and fixed with the lower crown beam 7. The column 4 passes through the beam plate 8 and is butt-jointed and fixed with the lower crown beam 7. Under the action of the beam plate 8, the strength of the crown beam is improved, and the column 4 is positioned and reinforced.

[0028] The double-row pile support device includes four fixed plates 9, which are arranged in a triangular shape; the lower part of the fixed plate 9 is flatly fixed with the beam plate 8, the side of the fixed plate 9 is flatly fixed with the column 4, and the four fixed plates 9 are arranged correspondingly at the four corners along the circumferential direction of the column 4.

[0029] Under the action of the four fixing plates 9, the bearing capacity of the column 4 is strengthened, and the butt stability between the column 4 and the crown beam is enhanced, thereby improving the supporting strength of the overall supporting structure.

[0030] The beam slab 8 has a plurality of plate steel bars inside, and the lower crown beam 7 has a plurality of beam steel bars. Each plate steel bar extends through the lower crown beam 7, and the plate steel bars and the beam steel bars are fixedly arranged, thereby improving the fixing strength and fixing effect of the beam slab 8 and the lower crown beam 7.

[0031] The beam plate 8 and the lower crown beam 7 can be formed by integral pouring, which reduces the construction steps and facilitates the construction work.

[0032] The double-row pile support device includes a plurality of cantilever piles 3 and a plurality of columns 4. The cantilever piles 3 are arranged in rows with corresponding intervals, and the adjacent cantilever piles 3 are arranged in an interlocking manner to form a lower curtain, thereby improving the support strength.

[0033] The columns 4 are arranged in intervals and correspondence, and the lower curtains are arranged in one-to-one correspondence with the columns 4; while ensuring the support strength, the columns 4 are prevented from being arranged too densely, thereby reducing the construction cost.

[0034] The double-row pile support device includes multiple cast-in-place piles 1 and multiple jet-jet piles 2. Each cast-in-place pile 1 is arranged in a one-to-one correspondence with each jet-jet pile 2 to form a support pile. The support piles are arranged in an interlocking manner, and the upper crown beam 6 is synchronously arranged with each support pile in an upper and lower fixed manner; in this way, the formed overall support structure has better support strength.

[0035] The double-row pile support device includes multiple supporting beams 5 and multiple connecting beams. The supporting beams 5 are arranged at intervals and fixedly connected with the upper crown beam 6 at the same time. The two ends of the connecting beams are respectively connected and fixedly connected with the adjacent supporting beams 5, and the connecting beams are arranged horizontally.

[0036] In this way, under the action of the connecting beam, each supporting beam 5 forms a whole, thereby improving the overall support strength and ensuring the support of the slope.

[0037] The foundation pit has a foundation pit bottom elevation, the upper part of the cast-in-place pile 1 and the upper part of the rotary jet pile 2 are respectively arranged above the foundation pit bottom elevation, the lower crown beam 7 is arranged corresponding to the foundation pit bottom elevation, the cantilever pile 3 is arranged below the foundation pit bottom elevation, and the column 4 is arranged above the foundation pit bottom elevation; hierarchical vertical support of the slope is realized to ensure the safety of the slope support.

[0038] The double-row pile support device includes a plurality of cantilever piles 3 and a plurality of columns 4, and each cantilever pile 3 and each column 4 are arranged in a one-to-one correspondence; along the direction away from the slope, each cantilever pile 3 is arranged in a corresponding interval, each column 4 is arranged in a corresponding interval, and each column 4 is arranged in the same horizontal plane, and the support beam 5 is synchronously connected to each column 4; in this way, not only the slope is vertically supported in a graded manner in the longitudinal direction, but also the graded horizontal support of the slope is achieved through the cooperation of each cantilever pile 3 and each column 4 in the transverse direction, which greatly improves the support strength and support effect of the slope and ensures the support safety of the slope.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Double-row pile support device, characterized in that: It includes cast-in-place piles, jet grouting piles, cantilever piles, columns and support beams. The jet grouting piles are located inside the cast-in-place piles, and the tops of the jet grouting piles and the tops of the cast-in-place piles form an upper crown beam. The columns are butt-jointed with the cantilever piles in upper and lower positions, and the cantilever piles and the cast-in-place piles are arranged in rows corresponding to each other. One end of the support beam is butt-jointed with the upper crown beam, and the other end of the support beam is horizontally extended in a direction away from the upper crown beam, and the top of the column is butt-jointed with the support beam.

2. The double-row pile support device according to claim 1, characterized in that: The top of the cantilever pile forms a lower crown beam, the columns are arranged longitudinally, the lower parts of the columns are butt-jointed with the lower crown beam, and the columns and the cantilever pile are arranged correspondingly along the central axis.

3. The double-row pile support device according to claim 2, characterized in that: The double-row pile supporting device comprises a beam plate, the beam plate and the lower crown beam are arranged in a flat and fixed manner, and the upright column penetrates the beam plate and is arranged in a butt-jointed and fixed manner with the lower crown beam.

4. The double-row pile support device according to claim 3, characterized in that: The double-row pile supporting device includes four fixed plates, which are arranged in a triangular shape; the lower part of the fixed plate is flatly fixed with the beam plate, the side part of the fixed plate is flatly fixed with the column, and the four fixed plates are arranged correspondingly at four corners along the circumferential direction of the column.

5. The double-row pile support device according to claim 3, characterized in that: The beam slab has a plurality of plate reinforcements inside, and the lower crown beam has a plurality of beam reinforcements. Each of the plate reinforcements extends through the lower crown beam, and the plate reinforcements and the beam reinforcements are fixedly arranged.

6. The double-row pile support device according to any one of claims 1 to 5, characterized in that: The double-row pile support device includes a plurality of cantilever piles and a plurality of columns. The cantilever piles are arranged in a row with corresponding intervals, and adjacent cantilever piles are arranged in a bite-interlocking manner to form a lower curtain. The columns are arranged in a row with corresponding intervals, and the lower curtains are arranged one-to-one with the columns.

7. The double-row pile support device according to any one of claims 1 to 5, characterized in that: The double-row pile support device includes a plurality of cast-in-place piles and a plurality of jet-jet piles. Each cast-in-place pile is arranged in a one-to-one correspondence with each jet-jet pile to form a support pile. The support piles are arranged in an interlocking manner, and the upper crown beam is synchronously arranged with each support pile in an upper and lower fixed manner.

8. The double-row pile support device according to claim 7, characterized in that: The double-row pile supporting device comprises a plurality of supporting beams and a plurality of connecting beams, wherein the supporting beams are arranged at intervals and in correspondence, and each supporting beam is synchronously butted and fixedly arranged with the upper crown beam; both ends of the connecting beam are respectively butt-jointed and fixedly arranged with the adjacent supporting beams, and the connecting beams are arranged horizontally.

9. The double-row pile support device according to any one of claims 2 to 5, characterized in that: The foundation pit has a foundation pit bottom elevation, the upper parts of the cast-in-place piles and the upper parts of the rotary jet piles are respectively arranged above the foundation pit bottom elevation, the lower crown beam is arranged corresponding to the foundation pit bottom elevation, the cantilever piles are arranged below the foundation pit bottom elevation, and the columns are arranged above the foundation pit bottom elevation.

10. The double-row pile support device according to claim 7, characterized in that: The double-row pile support device includes a plurality of cantilever piles and a plurality of columns, and each of the cantilever piles and each of the columns are arranged in one-to-one correspondence; along the direction away from the slope, each of the cantilever piles is arranged in a corresponding interval, each of the columns is arranged in a corresponding interval, and each of the columns is arranged in the same horizontal plane, and the support beam is synchronously connected to each of the columns.

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