Double-row pile device for assembling and recycling type multi-coupling beam

Abstract

The utility model relates to an assembly recovery type multi-coupling-beam double-row pile device which comprises front-row piles, rear-row piles and coupling beams, the front-row piles and the rear-row piles are arranged on the edge of a foundation pit in parallel at intervals, and inserting sections of the coupling beams penetrate through first threaded sleeves of the front-row piles and then are screwed out of second threaded sleeves of the rear-row piles. Therefore, the front-row piles and the rear-row piles are connected. The multi-coupling-beam structure has the advantages that the multi-coupling-beam structure design improves lateral stiffness and optimizes internal force distribution, so that the component size is effectively reduced, engineering materials are saved, the multi-coupling-beam structure is suitable for deeper foundation pit engineering, economic benefits are further improved, and the application range is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit engineering, in particular to a double-row pile device with an assembled and recyclable multi-link beam. Background Art

[0002] The double-row pile support structure has the advantages of simple construction technology, no cross-operation with earthwork excavation, and short construction period, and is widely used in foundation pit projects. In the general sense, double-row piles refer to a gate-shaped rigid frame structure formed by the top connecting beam and the crown beam connecting the front and rear rows of piles. In engineering practice, most of them use cast-in-place concrete structures, and a few use prefabricated steel structures or concrete structures. In terms of lateral stiffness and internal force distribution, the double-row pile support structure only coordinates the deformation of the two rows of piles through a single row of connecting beams at the top of the piles to form a spatial force system. Although it has obvious advantages over single-row cantilever piles, it still has shortcomings compared to multi-point support and anchor-pull retaining structures. Utility Model Content

[0003] The utility model aims to solve the technical problems existing in the prior art and provides a double-row pile device with an assembled and recyclable multi-link beam, which has high stability and can effectively improve economic benefits.

[0004] The technical solution of the utility model for solving the above technical problems is as follows: a double-row pile device with an assembled recyclable multi-link beam includes a front row of piles, a rear row of piles, and a link beam. The front row of piles and the rear row of piles are arranged in parallel and spaced apart at the edge of the foundation pit. The insertion section of the link beam passes through the first threaded sleeve of the front row of piles and is screwed out from the second threaded sleeve of the rear row of piles to connect the front row of piles and the rear row of piles.

[0005] As a further technical solution, a plurality of first threaded sleeves are provided along the height direction of the front row of piles, a plurality of second threaded sleeves are provided along the height direction of the rear row of piles, and the first threaded sleeves and the second threaded sleeves are provided along the width direction of the front row of piles and the rear row of piles respectively;

[0006] There are a plurality of connecting beams, and one connecting beam corresponds to one first threaded sleeve and one second threaded sleeve, so that the connecting beams are sequentially spaced from top to bottom on the front row piles and the rear row piles.

[0007] As a further technical solution, the connecting beam also includes a tail section and a connecting section, and the tail section, the connecting section, and the insertion section are connected in sequence. The connecting section and the insertion section are both structures with external threads to adapt to the internal threads in the first threaded sleeve and the second threaded sleeve; the tail section and the insertion section are respectively located on the outside of the front row of piles and the outside of the rear row of piles.

[0008] As a further technical solution, the connecting beam is pencil-shaped, and the insertion section is a pointed structure with a gradually decreasing diameter. The outer diameter of the connecting section is adapted to the inner diameter of the first threaded sleeve, so that after the connecting beam is screwed into the front row piles and the rear row piles, the insertion section is exposed on the side of the rear row piles facing away from the front row piles.

[0009] The inner diameter of the second threaded sleeve is equal to the inner diameter of the first threaded sleeve.

[0010] As a further technical solution, two groups of locking members are further included, one group of locking members corresponds to a row of the front piles, and the other group of locking members corresponds to a row of the rear piles, so as to fix the connecting beam connecting the tops of the front and rear piles.

[0011] As a further technical solution, the locking member includes a crown beam and a nut used in conjunction with the crown beam;

[0012] The crown beam is provided on the side of the front row piles facing away from the rear row piles and the side of the rear row piles facing away from the front row piles, and the connecting beam is locked to the front row piles and the rear row piles by the nut.

[0013] As a further technical solution, the crown beam is a channel steel crown beam, and a threaded hole adapted to the connecting beam is opened on the crown beam, so that the connecting beam passes through the crown beam, the front row of piles, and the rear row of piles in sequence.

[0014] As a further technical solution, the cross section of each pile in the front row is I-shaped, and both horizontal sides of the I-shape are provided with connecting pieces inclined inwardly to connect adjacent piles.

[0015] As a further technical solution, the cross-section of the connecting member is J-shaped, and the vertical vertex of the J-shape is connected to one end point of the horizontal side of the I-shape, so that the hook of the J-shape is set outward to engage with the connecting member of the adjacent pile.

[0016] The beneficial effects of the utility model are: the multi-link beam structure design improves the lateral stiffness and optimizes the internal force distribution, thereby effectively reducing the size of components, saving engineering materials, being suitable for deeper foundation pit projects, further improving economic benefits and expanding the scope of application;

[0017] Compared with the previous double-row pile technology, the utility model takes into account both soil retaining and water stopping in an integrated and reliable form, and realizes the recycling and reuse of all components, thereby improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic longitudinal section diagram of the device of the utility model;

[0019] Figure 2It is a schematic cross-sectional view of the device of the present invention at the location where the first threaded sleeve and the second threaded sleeve are provided;

[0020] Figure 3 This is a schematic diagram of the top view of a single pile;

[0021] Figure 4 This is a schematic diagram of the top view of the structure where a single pile is provided with a threaded sleeve;

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] Front row pile 1, first threaded sleeve 11;

[0024] rear row piles 2, second threaded sleeve 21;

[0025] Coupling beam 3, tail section 31, connecting section 32, inserting section 33;

[0026] Connector 4, hook 41;

[0027] Locking piece 5, crown beam 51, nut 52;

[0028] Ground level 6, pit bottom elevation 7. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0030] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0031] In the description of this application, the term "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. In order to enable any person skilled in the art to implement and use the present invention, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0032] In order to improve both stability and economic benefits, this embodiment provides a double-row pile device with a recyclable multi-link beam. Figure 1 、 Figure 2 , specifically including a front row pile 1, a rear row pile 2, and a connecting beam 3. The front row piles 1 and the rear row piles 2 are arranged in parallel and spaced apart at the edge of the foundation pit. The insertion section 33 of the connecting beam 3 passes through the first threaded sleeve 11 of the front row piles 1 and is screwed out from the second threaded sleeve 21 of the rear row piles 2 to connect the front row piles 1 and the rear row piles 2.

[0033] The front row of piles 1 and the rear row of piles 2 are each composed of a plurality of piles, and the number and shape of the front row of piles 1 and the rear row of piles 2 are the same. At the same time, the piles in the front row of piles 1 correspond one-to-one with the piles in the rear row of piles 2. For example, if each pile in the front row of piles 1 is connected, each pile in the rear row of piles 2 is also connected.

[0034] More specifically, referring to Figure 3 , each pile in the front row 1 has an I-shaped cross-section (the cross-section shown here is from a top view), and both lateral sides of the I-shape are provided with connecting members 4, angled inward, to connect adjacent piles. Similarly, the structure of each pile in the rear row 2 is identical to that of the front row 1, and will not be further described here.

[0035] Further, see Figure 2-Figure 4 The connector 4 has a J-shaped cross section, with the vertical apex of the J connected to one end of the horizontal side of the I-beam. This allows the J-shaped hook 41 to face outward, interlocking with the connector 4 of the adjacent pile. For example, the two connectors 4 on each pile are arranged in parallel, with the J-shaped hooks 41 curved in opposite directions, pointing away from the pile, thus providing the device with soil-retaining and water-stopping functions.

[0036] Accordingly, see Figure 4Each pile in the front row of piles 1 is provided with a first threaded sleeve 11 , which is designed as an internal thread to be threadedly adapted to be connected with the connecting beam 3 .

[0037] In the specific implementation process, several first threaded sleeves 11 are provided along the height direction of the front row piles 1, and several second threaded sleeves 21 are provided along the height direction of the rear row piles 2, and the first threaded sleeves 11 and the second threaded sleeves 21 are respectively arranged along the width directions of the front row piles 1 and the rear row piles 2; there are several connecting beams 3, and one connecting beam 3 corresponds to one first threaded sleeve 11 and one second threaded sleeve 21, so that several connecting beams 3 are arranged in sequence from top to bottom on the front row piles 1 and the rear row piles 2.

[0038] For example, three groups of connecting beams 3 are provided on the device from top to bottom to connect and fix the upper, middle and lower positions of the device, so as to improve the lateral stiffness of the device and optimize the internal force distribution, thereby reducing the size of components, saving engineering materials, and being suitable for deeper foundation pit projects.

[0039] In the specific implementation process, see Figure 2 The coupling beam 3 further includes a tail section 31 and a connecting section 32. The tail section 31, the connecting section 32, and the insert section 33 are sequentially connected. The connecting section 32 and the insert section 33 are both externally threaded structures to mate with the internal threads of the first threaded sleeve 11 and the second threaded sleeve 21. The tail section 31 and the insert section 33 are located on the outside of the front row piles 1 and the outside of the rear row piles 2, respectively. Specifically, the outside of the front row piles 1 is the side of the front row piles 1 facing away from the rear row piles 2. Correspondingly, the outside of the rear row piles 2 is the side facing away from the front row piles 1.

[0040] The tail section 31 has edges for easy screwing, and the connecting section 32 and the inserting section 33 are designed with a constant outer diameter and a variable outer diameter, respectively, so that the connecting beam 3 is easy to insert and not easy to fall off.

[0041] Furthermore, the connecting beam 3 is pencil-shaped, and the insertion section 33 is a pointed structure with a gradually decreasing diameter. The outer diameter of the connecting section 32 is adapted to the inner diameter of the first threaded sleeve 11, so that after the connecting beam 3 is screwed into the front row piles 1 and the rear row piles 2, the insertion section 33 is exposed on the side of the rear row piles 2 facing away from the front row piles 1; the inner diameter of the second threaded sleeve 21 is equal to the inner diameter of the first threaded sleeve 11, that is, the connecting section 32 is located at the second threaded sleeve 21 and the first threaded sleeve 11 at the same time.

[0042] In the specific implementation process, see Figure 1, further comprising two sets of locking members 5, one set of locking members 5 corresponding to a row of the front-row piles 1, and the other set of locking members 5 corresponding to a row of the rear-row piles 2, to securely connect the connecting beam 3 to the tops of the front-row piles 1 and the rear-row piles 2. Specifically, the number of locking members 5 in each set is the same as the number of piles in the front-row piles 1 or the rear-row piles 2; that is, one locking member 5 corresponds to one pile, to secure the connecting beam 3 to the piles.

[0043] Specifically, see Figure 1 The locking member 5 includes a crown beam 51 and a nut 52 used in conjunction with the crown beam 51. The crown beam 51 is provided on both the side of the front-row piles 1 facing away from the rear-row piles 2 and the side of the rear-row piles 2 facing away from the front-row piles 1. The nuts 52 are used to lock the connecting beam 3 to the front-row piles 1 and the rear-row piles 2. That is, one crown beam 51 and one nut 52 are adapted for each pile. For example, after the connecting beam 3 is inserted into two adjacent piles, it is locked and secured with the corresponding nuts 52.

[0044] Preferably, the crown beam 51 is a channel steel crown beam 51 , and a threaded hole adapted to the connecting beam 3 is opened on the crown beam 51 , so that the connecting beam 3 passes through the crown beam 51 , the front row piles 1 , and the rear row piles 2 in sequence.

[0045] The utility model is achieved in this way:

[0046] 1. Measure and locate the pile positions at 6 points on the ground, and statically drive the front row piles 1 and the rear row piles 2 in sequence to the designed elevation. If necessary, a guide frame can be used to improve the pile position accuracy.

[0047] 2. Screw the first connecting beam 3 horizontally through the first threaded sleeve 11 of the front row piles 1 into the second threaded sleeve 21 of the rear row piles 2, then install the crown beam 51 with bolt holes on both sides and fix them with the nuts 52;

[0048] 3. Excavate the foundation pit to 0.5-1.0 m below the design elevation of the second coupling beam 3. Screw the second coupling beam 3 horizontally through the first threaded sleeve 11 of the front row piles 1 into the second threaded sleeve 21 of the rear row piles 2. If necessary, use the micro-jacking process to guide the conduit hole.

[0049] 4. Repeat the above steps until the foundation pit is excavated to the designed pit bottom elevation 7;

[0050] 5. After the main construction is completed, the foundation pit is backfilled until the connecting beams 3 are unscrewed and recovered. From bottom to top, the nuts 52 are unscrewed, the crown beams 51 are removed, and the first connecting beam 3 is unscrewed and recovered. Finally, the front row piles 1 and the rear row piles 2 are pulled out and recovered.

[0051] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0052] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0053] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A double-row pile device with a recyclable multi-link beam, characterized in that: The invention comprises a front row pile (1), a rear row pile (2), and a connecting beam (3); the front row pile (1) and the rear row pile (2) are arranged in parallel and spaced apart at the edge of a foundation pit; an insertion section (33) of the connecting beam (3) passes through a first threaded sleeve (11) of the front row pile (1) and is screwed out from a second threaded sleeve (21) of the rear row pile (2) to connect the front row pile (1) and the rear row pile (2).

2. The double-row pile device for assembling and recovering multiple connecting beams according to claim 1, characterized in that: A plurality of first threaded sleeves (11) are provided along the height direction of the front row piles (1), and a plurality of second threaded sleeves (21) are provided along the height direction of the rear row piles (2), and the first threaded sleeves (11) and the second threaded sleeves (21) are respectively provided along the width direction of the front row piles (1) and the rear row piles (2); A plurality of connecting beams (3) are provided, and one connecting beam (3) corresponds to one first threaded sleeve (11) and one second threaded sleeve (21), so that the plurality of connecting beams (3) are sequentially spaced from top to bottom on the front row piles (1) and the rear row piles (2).

3. The double-row pile device for assembling and recovering multiple connecting beams according to claim 1, characterized in that: The coupling beam (3) further comprises a tail section (31) and a connecting section (32); the tail section (31), the connecting section (32) and the inserting section (33) are connected in sequence; the connecting section (32) and the inserting section (33) are both structures with external threads to match the internal threads in the first threaded sleeve (11) and the second threaded sleeve (21); the tail section (31) and the inserting section (33) are respectively located on the outside of the front row piles (1) and the outside of the rear row piles (2).

4. The double-row pile device for assembling and recovering multiple connecting beams according to claim 3, characterized in that: The connecting beam (3) is pencil-shaped, and the insertion section (33) is a pointed structure with a gradually decreasing diameter. The outer diameter of the connecting section (32) is adapted to the inner diameter of the first threaded sleeve (11), so that after the connecting beam (3) is screwed into the front row piles (1) and the rear row piles (2), the insertion section (33) is exposed on the side of the rear row piles (2) facing away from the front row piles (1); The inner diameter of the second threaded sleeve (21) is equal to the inner diameter of the first threaded sleeve (11).

5. The double-row pile device for assembling and recovering multiple connecting beams according to claim 4, characterized in that: It also includes two groups of locking members (5), one group of locking members (5) corresponding to a row of the front row piles (1), and the other group of locking members (5) corresponding to a row of the rear row piles (2), so as to fix the connecting beam (3) at the top of the front row piles (1) and the rear row piles (2).

6. The double-row pile device for assembling and recovering multiple connecting beams according to claim 5, characterized in that: The locking member (5) comprises a crown beam (51) and a nut (52) used in conjunction with the crown beam (51); The crown beam (51) is provided on the side of the front row piles (1) facing away from the rear row piles (2) and the side of the rear row piles (2) facing away from the front row piles (1), and the connecting beam (3) is locked to the front row piles (1) and the rear row piles (2) by means of the nut (52).

7. The double-row pile device for assembling and recovering multiple connecting beams according to claim 6, characterized in that: The crown beam (51) is a channel steel crown beam (51), and a threaded hole adapted to the connecting beam (3) is provided on the crown beam (51), so that the connecting beam (3) passes through the crown beam (51), the front row piles (1), and the rear row piles (2) in sequence.

8. The double-row pile device for assembling and recovering multiple connecting beams according to claim 1, characterized in that: The cross section of each pile in the front row of piles (1) is an I-shape, and connecting pieces (4) arranged in an inwardly inclined manner are provided on both horizontal sides of the I-shape to connect adjacent piles.

9. The double-row pile device for assembling and recovering multiple connecting beams according to claim 8, characterized in that: The cross section of the connecting member (4) is J-shaped, and the vertical vertex of the J-shape is connected to an end point of the I-shaped horizontal side, so that the hook (41) of the J-shape is arranged outward to engage with the connecting member (4) of the adjacent pile.

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