Locking steel pipe pile, guide frame structure and method for constructing locking steel pipe pile

Abstract

The present invention discloses a locking steel pipe pile, a guide frame structure and a method for constructing a locking steel pipe pile, which relates to the technical field of bridge cofferdam construction. The locking steel pipe pile comprises: a steel pipe pile body and two steel pipe pile locking ends, the two steel pipe pile locking ends are fixedly arranged on both sides of the steel pipe pile body, and the length of at least one of the steel pipe pile locking ends is less than the length of the steel pipe pile body. The locking steel pipe pile of the present invention has two steel pipe pile locking ends arranged on both sides of the steel pipe pile body, and the length of at least one of the steel pipe pile locking ends is less than the length of the steel pipe pile body: on the one hand, it can effectively save the length of the steel pipe pile locking ends of the locking steel pipe pile, save the amount of locking end manufacturing engineering, and save construction costs; on the other hand, by reducing the connection length of the steel pipe pile locking ends, it can also reduce the difficulty of inserting and driving the locking steel pipe pile.

Description

Technical Field

[0001] The invention relates to the technical field of bridge cofferdam construction, and in particular to a locking steel pipe pile, a guide frame structure and a method for constructing the locking steel pipe pile. Background Art

[0002] As the scale of infrastructure construction continues to expand, bridge construction is changing with each passing day, and more and more bridges are being built in rivers, lakes and seas.

[0003] As a temporary facility for bridge foundation construction, the main function of the cofferdam is to serve as a water-blocking device for underwater foundation construction or as a protective support for the excavation of deep foundation pits, so that foundation construction can be carried out under waterless and safe conditions. At present, underwater foundation construction generally adopts cofferdam structures such as steel sheet pile cofferdam, lock-mouth steel pipe pile cofferdam, and steel box cofferdam. Among them, the lock-mouth steel pipe pile structure has many advantages such as high strength, high rigidity, easy adjustment of pile length, and turnover, making the lock-mouth steel pipe pile cofferdam widely used in the field of bridge construction. Lock-mouth steel pipe piles are also often used in slope protection projects to reduce the slope distance of the slope and save land.

[0004] The locking steel pipe pile cofferdam achieves water-stopping or soil-retaining effects by connecting the steel pipe piles as a whole through the bite of the positive and negative lock buckles on both sides. The traditional locking steel pipe piles have the locking mouth made into a full length. In addition to using the locking mouth to stop water and retain soil, it also has the function of guiding insertion. However, the full-length locking mouth has the following problems: first, the locking mouth is too long, resulting in a waste of locking mouth materials; second, due to the long bite length between the full-length locking mouths, the difficulty of inserting and driving the locking steel pipe piles continues to increase. Summary of the invention

[0005] The embodiments of the present invention provide a locking steel pipe pile, a guide frame structure and a method for constructing a locking steel pipe pile, so as to solve the technical problems in the related art that the existing locking steel pipe piles have more consumables, higher costs and are difficult to insert and drive.

[0006] In a first aspect, a locking steel pipe pile is provided, the locking steel pipe pile comprising:

[0007] Steel pipe pile body;

[0008] Two steel pipe pile locking openings are fixedly arranged on both sides of the steel pipe pile body, and the length of at least one of the steel pipe pile locking openings is smaller than the length of the steel pipe pile body.

[0009] In some embodiments, the locking steel pipe pile further comprises:

[0010] A steel pipe pile flange is arranged at the upper end of the steel pipe pile body.

[0011] In some embodiments, the length calculated according to the formula L=H1-H2+ΔH is less than the length L of the steel pipe pile lock of the steel pipe pile body; wherein H1 is the elevation of the top of the steel pipe pile; H2 is the elevation of the bottom surface of the bottom sealing concrete; ΔH is the preset remaining length.

[0012] In a second aspect, a guide frame structure is provided for constructing the aforementioned locking steel pipe piles, the guide frame structure comprising:

[0013] Guide frame truss;

[0014] Four guide frame steel pipes, the four guide frame steel pipes are fixedly arranged on the guide frame truss at a preset distance, and the bottom ends of the first guide frame steel pipe and the second guide frame steel pipe are used to connect with the upper ends of the two steel pipe pile bodies;

[0015] Four guide frame locking ports are respectively arranged on the side of the second guide frame steel pipe facing the third guide frame steel pipe, on both sides of the third guide frame steel pipe, and on the side of the fourth guide frame steel pipe facing the third guide frame steel pipe, and each guide frame locking port can be matched with a steel pipe pile locking port.

[0016] In some embodiments, the guide frame structure further includes:

[0017] Two guide frame pile bottom flanges are respectively arranged at the bottom ends of the first guide frame steel pipe and the second guide frame steel pipe, and each guide frame pile bottom flange is used to connect with the steel pipe pile flange at the upper end of the steel pipe pile body.

[0018] In some embodiments, the four guide frame steel tubes are welded to the guide frame truss.

[0019] In some embodiments, the distance between two adjacent guide frame steel pipes is twice the center distance between the steel pipe pile bodies.

[0020] In some embodiments, the length of the guide frame steel pipe is smaller than the length of the steel pipe pile locking opening.

[0021] In a third aspect, a method for constructing a locking steel pipe pile is provided, using the aforementioned guide frame structure, comprising the following steps:

[0022] Connecting the bottom ends of the first guide frame steel pipe and the second guide frame steel pipe on the guide frame truss to the upper ends of the N-3 steel pipe pile body and the N-1 steel pipe pile body respectively;

[0023] The four guide frame locking openings of the second guide frame steel pipe facing one side of the third guide frame steel pipe, the two sides of the third guide frame steel pipe, and the fourth guide frame steel pipe facing one side of the third guide frame steel pipe are matched with the steel pipe pile locking openings on both sides of the Nth steel pipe pile body and the steel pipe pile locking openings on both sides of the N+2th steel pipe pile body, and the Nth steel pipe pile body and the N+2th steel pipe pile body are driven until the top surfaces of the Nth steel pipe pile body and the N+2th steel pipe pile body are flush with the top surface of the guide frame steel pipe;

[0024] The guide frame structure is removed, and the N+1 steel pipe pile body is driven by using the steel pipe pile locking mouth on one side of the Nth steel pipe pile body and the steel pipe pile locking mouth on one side of the N+2th steel pipe pile body, until the N+1th steel pipe pile body reaches the designed position;

[0025] The Nth steel pipe pile body and the N+2th steel pipe pile body are driven again until the Nth steel pipe pile body and the N+2th steel pipe pile body reach the designed position;

[0026] And so on, until all the steel pipe pile bodies reach the designed position and the construction of all the locked steel pipe piles is completed.

[0027] In some embodiments, the step of connecting the bottom ends of the first guide frame steel pipe and the second guide frame steel pipe on the guide frame truss to the upper ends of the N-3 th steel pipe pile body and the N-1 th steel pipe pile body, respectively, comprises:

[0028] The guide frame pile bottom flanges at the bottom ends of the first guide frame steel pipe and the second guide frame steel pipe are respectively connected to the steel pipe pile flanges at the upper ends of the N-3 steel pipe pile body and the N-1 steel pipe pile body.

[0029] The beneficial effects brought about by the technical solution provided by the present invention include:

[0030] The embodiment of the present invention provides a locking steel pipe pile, a guide frame structure and a method for constructing a locking steel pipe pile. The locking steel pipe pile is provided with two steel pipe pile locking ends on both sides of a steel pipe pile body, and the length of at least one of the steel pipe pile locking ends is less than the length of the steel pipe pile body: on the one hand, the length of the steel pipe pile locking end of the locking steel pipe pile can be effectively saved, the amount of locking end manufacturing engineering work can be saved, and the construction cost can be saved; on the other hand, by reducing the connection length of the steel pipe pile locking end, the difficulty of inserting and driving the locking steel pipe pile can also be reduced, that is, the construction difficulty can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic structural diagram of a locking steel pipe pile provided in an embodiment of the present invention;

[0033] Figure 2 Another structural schematic diagram of a locking steel pipe pile provided by an embodiment of the present invention;

[0034] Figure 3 The embodiment of the present invention provides Figure 1 A top view of

[0035] Figure 4 A structural schematic diagram of a guide frame structure provided by an embodiment of the present invention;

[0036] Figure 5 The embodiment of the present invention provides Figure 4 A top view of

[0037] Figure 6 A schematic diagram of implementing step S20 of a method for constructing a locking steel pipe pile provided in an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of implementing step S30 of a method for constructing a locking steel pipe pile provided by an embodiment of the present invention;

[0039] Figure 8 A schematic diagram of implementing step S40 of a method for constructing a locking steel pipe pile provided by an embodiment of the present invention;

[0040] In the figure: 1. Locking steel pipe pile; 11. Steel pipe pile body; 12. Steel pipe pile locking; 13. Steel pipe pile flange; 2. Guide frame structure; 21. Guide frame truss; 22. Guide frame steel pipe; 23. Guide frame locking; 24. Guide frame pile bottom flange. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The embodiment of the present invention provides a locking steel pipe pile, which can solve the technical problems of the existing locking steel pipe piles, such as large amount of consumables, high cost and difficulty in inserting and driving.

[0043] See also Figure 1 and Figure 2As shown, an embodiment of the present invention provides a locking steel pipe pile, which includes a steel pipe pile body 11 and two steel pipe pile locking ends 12 .

[0044] The two steel pipe pile locking openings 12 are fixedly disposed on both sides of the steel pipe pile body 11 , and the length of the steel pipe pile locking openings 12 is smaller than the length of the steel pipe pile body 11 .

[0045] The locking steel pipe pile in the embodiment of the present invention has two steel pipe pile locking ends on both sides of the steel pipe pile body, and the length of at least one of the steel pipe pile locking ends is less than the length of the steel pipe pile body: on the one hand, it can effectively save the steel pipe pile locking end length of the locking steel pipe pile, save the locking end manufacturing engineering workload, and save construction costs; on the other hand, by reducing the connection length of the steel pipe pile locking end, it can also reduce the difficulty of inserting the locking steel pipe pile, that is, reduce the construction difficulty.

[0046] As an optional implementation, in an embodiment of the invention, see Figure 3 As shown, the locking steel pipe pile further includes: a steel pipe pile flange 13, and the steel pipe pile flange 13 is arranged at the upper end of the steel pipe pile body 11, so as to facilitate the connection of the steel pipe pile body 11 with a corresponding installation device.

[0047] As an optional implementation, in an embodiment of the invention, see Figure 8 As shown, the length L of the steel pipe pile lock 12 whose length is less than the steel pipe pile body 11 is calculated according to the formula L=H1-H2+ΔH. Among them, H1 is the elevation of the top of the steel pipe pile; H2 is the elevation of the bottom surface of the bottom sealing concrete; ΔH is the preset remaining length. Specifically, when the lengths of the two steel pipe pile locks 12 are both less than the steel pipe pile body 11, L refers to the lengths of the two steel pipe pile locks 12. When only one of the steel pipe pile locks 12 has a length less than the steel pipe pile body 11, L refers to the length of the shorter steel pipe pile lock 12.

[0048] See also Figure 4 and Figure 5 As shown, an embodiment of the present invention provides a guide frame structure for constructing the aforementioned locking steel pipe piles, including: a guide frame truss 21, four guide frame steel pipes 22 and four guide frame locking ends 23.

[0049] The four guide frame steel pipes 22 are fixedly mounted on the guide frame truss 21 at a preset distance, and the bottom ends of the first guide frame steel pipe 22 and the second guide frame steel pipe 22 are used to connect with the upper ends of the two steel pipe pile bodies 11 .

[0050] The four guide frame locking openings 23 are respectively arranged on the side of the second guide frame steel tube 22 facing the third guide frame steel tube 22, on both sides of the third guide frame steel tube 22, and on the side of the fourth guide frame steel tube 22 facing the third guide frame steel tube 22. Each guide frame locking opening 23 can cooperate with a steel pipe pile locking opening 12.

[0051] The guide frame structure in the embodiment of the present invention is provided with four guide frame steel pipes and four guide frame locking mouths. The bottom ends of the first guide frame steel pipe and the second guide frame steel pipe are connected to the upper ends of the two steel pipe pile bodies. The four guide frame locking mouths are respectively arranged on the side of the second guide frame steel pipe facing the third guide frame steel pipe, on both sides of the third guide frame steel pipe, and on the side of the fourth guide frame steel pipe facing the third guide frame steel pipe. The four guide frame locking mouths can guide the two sides of the two locking mouth steel pipe piles, thereby improving the insertion accuracy and construction efficiency of the locking mouth steel pipe piles.

[0052] As an optional implementation, in an embodiment of the invention, see Figure 4 As shown, the guide frame structure also includes: two guide frame pile bottom flanges 24, which are respectively arranged at the bottom ends of the first guide frame steel pipe 22 and the second guide frame steel pipe 22, and each guide frame pile bottom flange 24 is used to connect with the steel pipe pile flange 13 at the upper end of the steel pipe pile body 11.

[0053] As an optional implementation, in an embodiment of the invention, the four guide frame steel pipes 22 are welded to the guide frame truss 21, which is easy to process and has a tight connection.

[0054] As an optional implementation, in an embodiment of the invention, see Figure 5 As shown, the distance between two adjacent guide frame steel pipes 22 is twice the center distance between the steel pipe pile bodies 11 , which facilitates the construction of the steel pipe pile bodies 11 .

[0055] As an optional implementation, in an embodiment of the invention, see Figure 5 As shown, the length of the guide frame steel pipe 22 is less than the length of the steel pipe pile lock 12, and the length of the guide frame steel pipe 22 is equal to the length of the steel pipe pile body 11 minus the length L of the steel pipe pile lock 12, which is convenient for insertion.

[0056] The embodiment of the present invention provides a method for constructing a locking steel pipe pile, using the aforementioned guide frame structure, comprising the following steps:

[0057] Step S10, connecting the bottom ends of the first guide frame steel pipe 22 and the second guide frame steel pipe 22 on the guide frame truss 21 to the upper ends of the N-3 th steel pipe pile body 11 and the N-1 th steel pipe pile body 11 respectively.

[0058] Specifically, as shown in FIG4 , the guide frame pile bottom flanges 24 at the bottom ends of the first guide frame steel pipe 22 and the second guide frame steel pipe 22 are connected to the steel pipe pile flanges 13 at the top ends of the N-3 th steel pipe pile body 11 and the N-1 th steel pipe pile body 11 respectively.

[0059] Step S20, four guide frame locks 23 of the second guide frame steel tube 22 facing one side of the third guide frame steel tube 22, both sides of the third guide frame steel tube 22, and the fourth guide frame steel tube 22 facing one side of the third guide frame steel tube 22, cooperate with the steel pipe pile locks 12 on both sides of the Nth steel pipe pile body 11 and the steel pipe pile locks 12 on both sides of the N+2th steel pipe pile body 11, and drive the Nth steel pipe pile body 11 and the N+2th steel pipe pile body 11 until the top surfaces of the Nth steel pipe pile body 11 and the N+2th steel pipe pile body 11 are flush with the top surface of the guide frame steel tube 22, see Figure 6 shown.

[0060] Step S30, dismantle the guide frame structure 2, and use the steel pipe pile lock 12 on one side of the Nth steel pipe pile body 11 and the steel pipe pile lock 12 on one side of the N+2th steel pipe pile body 11 to drive the N+1th steel pipe pile body 11 until the N+1th steel pipe pile body 11 reaches the designed position, see Figure 7 shown.

[0061] Step S40, driving the Nth steel pipe pile body 11 and the N+2th steel pipe pile body 11 again until the Nth steel pipe pile body 11 and the N+2th steel pipe pile body 11 reach the designed position, as shown in FIG8 .

[0062] Step S50, and so on, until all the steel pipe pile bodies 11 reach the designed position, and the construction of all the locking steel pipe piles 1 is completed. Specifically, the bottom ends of the first guide frame steel pipe 22 and the second guide frame steel pipe 22 on the guide frame truss 21 are connected to the upper ends of the Nth steel pipe pile body 11 and the N+2th steel pipe pile body 11, respectively, and the above construction steps are repeated until all the steel pipe pile bodies 11 reach the designed position.

[0063] The method for constructing locking steel pipe piles in the embodiment of the present invention can guide both sides of two locking steel pipe piles by setting a guiding structure, thereby improving the driving accuracy and construction efficiency of the locking steel pipe piles.

[0064] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0065] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0066] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A guide frame structure for constructing a locking steel pipe pile (1), the locking steel pipe pile (1) comprising: A steel pipe pile body (11) and two steel pipe pile locking openings (12), wherein the two steel pipe pile locking openings (12) are fixedly arranged on both sides of the steel pipe pile body (11), and the length of at least one of the steel pipe pile locking openings (12) is smaller than the length of the steel pipe pile body (11), characterized in that the guide frame structure (2) comprises: Guide frame truss (21); Four guide frame steel pipes (22), the four guide frame steel pipes (22) are fixedly arranged on the guide frame truss (21) at a preset distance, and the bottom ends of the first guide frame steel pipe (22) and the second guide frame steel pipe (22) are used to connect with the upper ends of the two steel pipe pile bodies (11); Four guide frame locking openings (23), the four guide frame locking openings (23) are respectively arranged on the side of the second guide frame steel pipe (22) facing the third guide frame steel pipe (22), on both sides of the third guide frame steel pipe (22), and on the side of the fourth guide frame steel pipe (22) facing the third guide frame steel pipe (22), each of the guide frame locking openings (23) can be matched with a steel pipe pile locking opening (12).

2. The guide frame structure according to claim 1, characterized in that: Also includes: Two guide frame pile bottom flanges (24), the two guide frame pile bottom flanges (24) are respectively arranged at the bottom ends of the first guide frame steel pipe (22) and the second guide frame steel pipe (22), and each guide frame pile bottom flange (24) is used to connect with the steel pipe pile flange (13) at the upper end of the steel pipe pile body (11).

3. The guide frame structure according to claim 2, characterized in that: The four guide frame steel pipes (22) are welded to the guide frame truss (21).

4. The guide frame structure according to claim 2, characterized in that: The distance between two adjacent guide frame steel pipes (22) is twice the center distance between the steel pipe pile bodies (11).

5. The guide frame structure according to claim 2, characterized in that: The length of the guide frame steel pipe (22) is smaller than the length of the steel pipe pile locking opening (12).

6. The guide frame structure according to claim 1, characterized in that: The locking steel pipe pile (1) further comprises: A steel pipe pile flange (13), wherein the steel pipe pile flange (13) is arranged at the upper end of the steel pipe pile body (11).

7. The guide frame structure according to claim 1, characterized in that: The length L of the steel pipe pile lock opening (12) whose length is less than the steel pipe pile body (11) is calculated according to the formula L=H1-H2+ΔH; wherein H1 is the elevation of the top of the steel pipe pile; H2 is the elevation of the bottom surface of the bottom sealing concrete; and ΔH is the preset remaining length.

8. A method for constructing interlocking steel pipe piles, using the guide frame structure as claimed in claim 1, characterized in that: The following steps are involved: The bottom ends of the first guide frame steel pipe (22) and the second guide frame steel pipe (22) on the guide frame truss (21) are connected to the upper ends of the N-3rd steel pipe pile body (11) and the N-1th steel pipe pile body (11) respectively; The four guide frame locking openings (23) on the second guide frame steel tube (22) facing one side of the third guide frame steel tube (22), on both sides of the third guide frame steel tube (22), and on the fourth guide frame steel tube (22) facing one side of the third guide frame steel tube (22) are matched with the steel pipe pile locking openings (12) on both sides of the Nth steel pipe pile body (11) and the steel pipe pile locking openings (12) on both sides of the N+2th steel pipe pile body (11), and the Nth steel pipe pile body (11) and the N+2th steel pipe pile body (11) are driven until the top surfaces of the Nth steel pipe pile body (11) and the N+2th steel pipe pile body (11) are flush with the top surface of the guide frame steel tube (22); The guide frame structure (2) is removed, and the N+1th steel pipe pile body (11) is driven in by using the steel pipe pile locking opening (12) on one side of the Nth steel pipe pile body (11) and the steel pipe pile locking opening (12) on one side of the N+2th steel pipe pile body (11), until the N+1th steel pipe pile body (11) reaches the designed position; The Nth steel pipe pile body (11) and the N+2th steel pipe pile body (11) are driven again until the Nth steel pipe pile body (11) and the N+2th steel pipe pile body (11) reach the designed position; The same process is repeated until all the steel pipe pile bodies (11) reach the designed positions and the construction of all the locking steel pipe piles (1) is completed.

9. The method for constructing interlocking steel pipe piles according to claim 8, characterized in that: The method of connecting the bottom ends of the first guide frame steel pipe (22) and the second guide frame steel pipe (22) on the guide frame truss (21) to the upper ends of the N-3rd steel pipe pile body (11) and the N-1st steel pipe pile body (11) respectively comprises: The guide frame pile bottom flanges (24) at the bottom ends of the first guide frame steel pipe (22) and the second guide frame steel pipe (22) are respectively connected to the steel pipe pile flanges (13) at the top ends of the N-3rd steel pipe pile body (11) and the N-1st steel pipe pile body (11).

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