Internal prestressed concrete pipe pile tying and fixing device and construction method thereof

Abstract

The invention provides an internal prestressed concrete pipe pile tying and fixing device and a construction method thereof.The internal prestressed concrete pipe pile tying and fixing device comprises an adjustable tying assembly, a fixing piece and a fastening accessory, one end of the adjustable tying assembly is fixedly connected with the fixing piece, and the fixing piece is further fixedly connected with the fastening accessory; wherein the fastening accessory is used for being matched with the internal prestressed concrete pipe pile; according to the embodiment of the invention, the problems of inclination, displacement and the like of the internal prestressed concrete pipe piles are effectively prevented through the fixing pieces and the fastening accessories, and meanwhile, the distance between the adjacent pipe piles can be conveniently adjusted through the adjustable pulling assemblies so as to adapt to different engineering requirements; in addition, the connection mode among the adjustable pulling assembly, the fixing piece and the fastening accessory is detachable connection, and the adjustable pulling assembly, the fixing piece and the fastening accessory can be repeatedly used. And the structure is simple, installation is convenient, and the construction period is effectively shortened.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering construction, and in particular to an internal prestressed concrete pipe pile tie-fixing device and a construction method thereof. Background Art

[0002] With the development of construction engineering technology, the application of prefabricated components, especially prefabricated pipe piles, is becoming more and more widespread. In areas with weak foundations, the construction method of pipe piles generally adopts static pressure method or hammer method. However, in the actual construction process, the special properties of soft foundations bring many challenges to the construction of pipe piles. Especially in geological environments such as original mines and rivers with deep silt layers, the fluidity of silt during the excavation of the foundation can easily cause serious displacement and tilt of the pipe piles, affecting the quality of the project.

[0003] At present, in order to solve the problem of pipe pile deviation in soft foundation, the existing technology mainly adopts the following measures: avoiding soil squeezing effect; repeatedly checking the pile position during construction to ensure the pile position is accurate; increasing the cross-sectional size of the pedestal and the ground beam to resist the influence of soil displacement on the pipe pile. However, this method has the problem of a sharp increase in the amount of steel bars and concrete, resulting in high material consumption and a long construction period. Summary of the invention

[0004] The embodiment of the present invention provides an internal prestressed concrete pipe pile tie-fixing device and a construction method thereof, aiming to solve the problems of large material consumption, long construction period and poor adaptability caused by the deviation of prestressed pipe pile construction.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides an internal prestressed concrete pipe pile anchoring device, comprising: an adjustable anchor assembly, a fixing piece and a fastening accessory, wherein one end of the adjustable anchor assembly is fixedly connected to the fixing piece, and the fixing piece is also fixedly connected to the fastening accessory; wherein the fastening accessory is used to adapt to the internal prestressed concrete pipe pile.

[0006] Furthermore, the fastening accessory includes a first clamp, a second clamp and a first locking piece, the first clamp is connected to the second clamp, and the first clamp is fixedly arranged on the second clamp via the first locking piece.

[0007] Furthermore, the adjustable tie assembly includes a first tie rod, an adjusting member and a second tie rod, wherein the first tie rod is movably connected to one end of the adjusting member, the other end of the adjusting member is movably connected to one end of the second tie rod, and the other end of the second tie rod is fixedly connected to the fixing member; wherein the adjusting member is used to adjust the lengths of the first tie rod and the second tie rod.

[0008] Furthermore, the fastening accessory also includes a clamp protective sleeve, and the clamp protective sleeve is arranged on the outer surface of the first clamp.

[0009] Furthermore, the fastening accessory also includes an arc-shaped friction pad, which is arranged on the second clamp and is used to increase the friction between the first clamp and the internal prestressed concrete pipe pile.

[0010] Furthermore, the fastening accessory also includes a gasket, and the gasket is arranged between the first locking member and the second clamp.

[0011] Furthermore, it also includes a second locking member, which is arranged between the second tie rod and the fixing member to fix the second tie rod and the fixing member.

[0012] Furthermore, a first threaded through hole and a second threaded through hole are respectively provided on the left and right ends of the adjusting member, the first tie rod passes through the first threaded through hole and is movably connected to one end of the adjusting member, and the second tie rod passes through the second threaded through hole and is movably connected to the other end of the adjusting member.

[0013] A second aspect of the present invention provides a construction method of an internal prestressed concrete pipe pile tie-fixing device, which is applied to the internal prestressed concrete pipe pile tie-fixing device described in the first aspect, and the method comprises the following steps:

[0014] S1. Install fastening accessories on the internal prestressed concrete pipe piles;

[0015] S2, connecting the fastening fitting equipped with the internal prestressed concrete pipe pile to the fixing piece, and fixing the fixing piece to one end of the second tie rod of the adjustable tie assembly through a second locking piece;

[0016] S3, movably connecting the other end of the second tie rod to one end of the adjusting member of the adjustable tie assembly, and movably connecting the other end of the adjusting member to the first tie rod of the adjustable tie assembly.

[0017] Furthermore, the method of connecting the fastening fittings equipped with the internal prestressed concrete pipe piles with the fixing parts includes:

[0018] The first clamp of the fastening accessory is penetrated and arranged on the elliptical through hole of the fixing piece, and the first clamp is fixedly arranged on the second clamp of the fastening accessory through a first locking piece, so as to fix the internal prestressed concrete pipe pile.

[0019] The present invention provides an internal prestressed concrete pipe pile anchoring and fixing device and a construction method thereof, comprising: an adjustable anchoring assembly, a fixing piece and a fastening accessory, wherein one end of the adjustable anchoring assembly is fixedly connected to the fixing piece, and the fixing piece is also fixedly connected to the fastening accessory; wherein the fastening accessory is used to adapt to the internal prestressed concrete pipe pile; the embodiment of the present invention effectively prevents the internal prestressed concrete pipe pile from tilting, displacement and other problems through the fixing piece and the fastening accessory, and conveniently adjusts the distance between adjacent pipe piles through the adjustable anchoring assembly to meet different engineering requirements; in addition, the connection method among the adjustable anchoring assembly, the fixing piece and the fastening accessory is a detachable connection, which can be reused; and the structure is simple, the installation is convenient, and the construction period is effectively shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a device for fastening and fixing an internal prestressed concrete pipe pile provided in one embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a fastening accessory in a device for fastening and fixing an internal prestressed concrete pipe pile provided in one embodiment of the present invention;

[0023] Figure 3 A schematic flow chart of a construction method of an internal prestressed concrete pipe pile tie-fixing device provided in one embodiment of the present invention.

[0024] Among them, the reference numerals in the figures are as follows:

[0025] 100. Adjustable tie assembly; 110. First tie rod; 120. Adjustment member; 130. Second tie rod; 200. Fixation member; 210. Oval through hole; 300. Fastening accessory; 310. First clamp; 320. Second clamp; 330. First locking member; 340. Clamp protection cover; 350. Arc friction pad; 360. Gasket; 400. Second locking member. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0027] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0028] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0029] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] See also Figure 1 , Figure 1 A schematic structural diagram of an internal prestressed concrete pipe pile anchoring device provided for one embodiment of the present invention; A first aspect of the present invention provides an internal prestressed concrete pipe pile anchoring device, comprising: an adjustable anchor assembly 100, a fixing piece 200 and a fastening accessory 300, wherein one end of the adjustable anchor assembly 100 is fixedly connected to the fixing piece 200, and the fixing piece 200 is also fixedly connected to the fastening accessory 300; wherein the fastening accessory 300 is used to adapt to the internal prestressed concrete pipe pile.

[0031] In this embodiment, the internal prestressed concrete pipe pile anchoring device is applied to a soft foundation, and is mainly composed of an adjustable anchor assembly 100, a fixing piece 200 and a fastening accessory 300; wherein, one end of the adjustable anchor assembly 100 is fixedly connected to the fixing piece 200, and the other end of the adjustable anchor assembly 100 is used to connect adjacent pipe piles of the internal prestressed concrete pipe pile; and the length of the adjustable anchor assembly 100 can be adjusted according to the distance between the internal prestressed concrete pipe pile and the adjacent pipe pile to adapt to different engineering requirements; in addition, the adjustable anchor assembly 100 is made of high-strength steel, which can effectively resist external forces from different directions, and ensure that the internal prestressed concrete pipe pile on the fastening accessory 300 connected to the adjustable anchor assembly 100 always remains stable under various complex working conditions. At the same time, the fixing member 200 in this embodiment is also fixedly connected to the fastening accessory 300, which can be specifically a snap connection or the like, so that the fixing member 200 is used to connect the adjustable tie assembly 100 and the fastening accessory 300; and, the fastening accessory 300 in this embodiment can be a fixed clamp; the fixed clamp can be used to adapt to the internal prestressed concrete pipe pile; in specific implementation, the fixed clamp fits tightly on the internal prestressed concrete pipe pile to achieve a fixed connection, so that the tension force transmitted from the adjustable tie assembly 100 can be evenly and effectively dispersed to the surface of the pipe pile, thereby ensuring that the internal prestressed concrete pipe pile always remains stable under various complex working conditions.

[0032] Therefore, the internal prestressed concrete pipe pile anchoring device in this embodiment effectively prevents the internal prestressed concrete pipe pile from tilting, displacement and other problems through the fixing piece 200 and the fastening accessory 300, and can conveniently adjust the distance between adjacent pipe piles through the adjustable anchoring assembly 100 to adapt to different engineering requirements; and the connection method between the adjustable anchoring assembly 100, the fixing piece 200 and the fastening accessory 300 in this embodiment is a detachable connection, which can be reused; and the structure is simple and easy to install, which effectively shortens the construction period.

[0033] In one embodiment, if Figure 1 and Figure 2 As shown, the fastening accessory 300 includes a first clamp 310 , a second clamp 320 and a first locking member 330 , the first clamp 310 is connected to the second clamp 320 , and the first clamp 310 is fixedly disposed on the second clamp 320 via the first locking member 330 .

[0034] In this embodiment, in order to make the fastening accessory 300 adapt to the internal prestressed concrete pipe pile, the fastening accessory 300 is provided with a first clamp 310, a second clamp 320 and a first locking member 330; wherein, the assembly space formed by the first clamp 310 and the second clamp 320 is used to adapt and fix the internal prestressed concrete pipe pile; in specific implementation, the first clamp 310 equipped with the internal prestressed concrete pipe pile is transversely arranged on the elliptical through hole 210 of the fixing member 200, and the first clamp 310 is fixedly arranged on the second clamp 320 by the first locking member 330; wherein, the width of the second clamp 320 is greater than the diameter of the elliptical through hole 210, so that the second clamp 320 and the first clamp 310 are limited to the two sides of the elliptical through hole 210; thereby, the internal prestressed concrete pipe pile is fixed while the fastening accessory 300 is connected to the fixing member 200.

[0035] More specifically, the first clamp 310 in this embodiment is a U-shaped steel ring; the first locking piece 330 in this embodiment can be a nut; wherein, one end of the U-shaped steel ring is passed through the first through hole of the second clamp 320, and one end of the U-shaped steel ring is fixed to the second clamp 320 by the nut; the other end of the U-shaped steel ring is passed through the second through hole of the second clamp 320, and the other end of the U-shaped steel ring is fixed to the second clamp 320 by the nut, and then the internal prestressed concrete pipe pile assembled between the first clamp 310 and the second clamp 320 is fixed by the first locking piece 330.

[0036] In one embodiment, if Figure 1 and Figure 2 As shown, the adjustable tie assembly 100 includes a first tie rod 110, an adjusting member 120 and a second tie rod 130, wherein the first tie rod 110 is movably connected to one end of the adjusting member 120, the other end of the adjusting member 120 is movably connected to one end of the second tie rod 130, and the other end of the second tie rod 130 is fixedly connected to the fixing member 200; wherein the adjusting member 120 is used to adjust the lengths of the first tie rod 110 and the second tie rod 130.

[0037] In this embodiment, the first tie rod 110 and the second tie rod 130 in the adjustable tie assembly 100 are both made of high-strength steel, and the left and right ends of the first tie rod 110 and the left and right ends of the second tie rod 130 are provided with threads for connecting adjacent pipe piles; and the adjusting member 120 in this embodiment is a flange adjustment bolt; wherein, the first tie rod 110 is threadedly connected to one end of the adjusting member 120, and the other end of the adjusting member 120 is threadedly connected to one end of the second tie rod 130. This threaded connection method is simple to operate and easy to adjust, and at the same time can ensure the relative position accuracy between the first tie rod 110 and the second tie rod 130 during the adjustment process; in the specific implementation, the flange adjustment bolt can be rotated according to the distance between adjacent pipe piles to adjust the length of the first tie rod 110 and the second tie rod 130.

[0038] In one embodiment, if Figure 1 and Figure 2 As shown, the fastening accessory 300 further includes a clamp protection sleeve 340 , and the clamp protection sleeve 340 is disposed on the outer surface of the first clamp 310 .

[0039] In this embodiment, in order to protect the first clamp 310 and extend its service life, a clamp protection cover 340 is also provided on the fastening accessory 300 in this embodiment; wherein the clamp protection cover 340 is tightly fitted and fixed on the outer surface of the first clamp 310; and the clamp protection cover 340 in this embodiment is preferably made of elastic and wear-resistant material, thereby effectively preventing wear on the first clamp 310.

[0040] In one embodiment, if Figure 1 and Figure 2 As shown, the fastening accessory 300 further includes an arc-shaped friction pad 350 , which is disposed on the second clamp 320 , and is used to increase the friction between the first clamp 310 and the inner prestressed concrete pipe pile.

[0041] In this embodiment, the fastening accessory 300 further includes an arc-shaped friction pad 350, wherein the arc-shaped friction pad 350 is disposed on the second clamp 320. In this embodiment, the assembly space formed by the arc-shaped friction pad 350 and the U-shaped steel ring is used to adapt to the internal prestressed concrete pipe pile. In addition, the arc-shaped friction pad 350 in this embodiment can increase the friction between the U-shaped steel ring and the internal prestressed concrete pipe pile, thereby preventing the relative sliding of the two.

[0042] In one embodiment, if Figure 1 and Figure 2As shown, the fastening accessory 300 further includes a gasket 360 , and the gasket 360 is disposed between the first locking member 330 and the second clamp 320 .

[0043] In this embodiment, since the first locking member 330 will generate pressure on the second clamp 320 when tightened, this embodiment can evenly distribute the pressure to the surface of the second clamp 320 by setting a gasket 360 between the first locking member 330 and the second clamp 320, so as to avoid excessive local pressure causing deformation, damage to the second clamp 320 or affecting its tightening effect on the internal prestressed concrete pipe pile.

[0044] In one embodiment, if Figure 1 and Figure 2 As shown, a second locking member 400 is further included. The second locking member 400 is disposed between the second tie rod 130 and the fixing member 200 to fix the second tie rod 130 and the fixing member 200 .

[0045] In this embodiment, in order to fix the second tie rod 130 and the fixing piece 200, the internal prestressed concrete pipe pile tie fixing device in this embodiment also includes a second locking piece 400, wherein the second locking piece 400 is arranged at the connection between the second tie rod 130 and the fixing piece 200, so that the second tie rod 130 and the fixing piece 200 are tightly connected together through the second locking piece 400 to prevent the two from loosening or detaching during use.

[0046] In one embodiment, if Figure 1 and Figure 2 As shown, a first threaded through hole and a second threaded through hole are respectively provided on the left and right ends of the adjusting member 120, the first tie rod 110 passes through the first threaded through hole and is movably connected to one end of the adjusting member 120, and the second tie rod 130 passes through the second threaded through hole and is movably connected to the other end of the adjusting member 120.

[0047] In this embodiment, in order to realize the movable connection between the first tie rod 110, the second tie rod 130 and the adjusting member 120, a first threaded through hole and a second threaded through hole are respectively provided on the left and right ends of the adjusting member 120 in this embodiment, wherein the first tie rod 110 passes through the first threaded through hole and is threadedly connected to one end of the adjusting member 120, and the second tie rod 130 passes through the second threaded through hole and is threadedly connected to the other end of the adjusting member 120; specifically, when the adjusting member 120 rotates, the first tie rod 110 and the second tie rod 130 will respectively move axially relative to the adjusting member 120 according to the transmission principle of the threads on the first threaded through hole and the second threaded through hole, thereby realizing the adjustment of the length of the first tie rod 110 and the second tie rod 130.

[0048] See also Figures 1 to 3 In a second aspect of the present invention, a construction method for an internal prestressed concrete pipe pile tie-fixing device is provided, the construction method comprising the following steps:

[0049] S1, installing fastening fittings 300 on the internal prestressed concrete pipe pile;

[0050] S2, connecting the fastening fitting 300 equipped with the internal prestressed concrete pipe pile to the fixing member 200, and fixing the fixing member 200 to one end of the second tie rod 130 of the adjustable tie assembly 100 through the second locking member 400;

[0051] S3, movably connecting the other end of the second tie rod 130 to one end of the adjusting member 120 of the adjustable tie assembly 100, and movably connecting the other end of the adjusting member 120 to the first tie rod 110 of the adjustable tie assembly 100.

[0052] In this embodiment, during the construction of the internal prestressed concrete pipe pile tie-fixing device, firstly, the fastening fitting 300 is installed on the internal prestressed concrete pipe pile; specifically, the first clamp 310 and the second clamp 320 on the fastening fitting 300 are sleeved on the internal prestressed concrete pipe pile; then, the fastening fitting 300 equipped with the internal prestressed concrete pipe pile is connected to the fixing piece 200 to establish a connection relationship between the fastening fitting 300 and the fixing piece 200; and the fixing piece 200 is connected to the second tension piece 400 by the second locking piece 400. One end of the tie rod 130 is fixedly connected, thereby realizing the connection between the fastening accessory 300 and the second tie rod 130 in the adjustable tie assembly 100; finally, the other end of the second tie rod 130 is movably connected to one end of the adjusting member 120 of the adjustable tie assembly 100, and the other end of the adjusting member 120 is movably connected to one end of the first tie rod 110 of the adjustable tie assembly 100; thus, the length of the first tie rod 110 and the second tie rod 130 can be adjusted through the adjusting member 120. In addition, the other end of the first tie rod 110 can also be connected to the adjacent pipe pile of the internal prestressed concrete pipe pile (not shown) to form a tie fastening structure, thereby improving the stability of the entire pipe pile structure.

[0053] Therefore, the construction method of the internal prestressed concrete pipe pile tie-fixing device in this embodiment can effectively prevent problems such as the internal prestressed concrete pipe pile tilting, while effectively shortening the construction period and solving the problem of high material consumption.

[0054] In one embodiment, the method of connecting the fastening fitting 300 equipped with the internal prestressed concrete pipe pile to the fixing member 200 includes:

[0055] The first clamp 310 of the fastening accessory 300 is penetrated through the elliptical through hole 210 of the fixing member 200, and the first clamp 310 is fixed to the second clamp 320 of the fastening accessory 300 by a first locking member 330 to fix the internal prestressed concrete pipe pile.

[0056] In this embodiment, the step S2 of connecting the fastening fitting 300 equipped with the internal prestressed concrete pipe pile with the fixing piece 200 specifically includes: penetrating the first clamp 310 in the fastening fitting 300 equipped with the internal prestressed concrete pipe pile through the elliptical through hole 210 of the fixing piece 200, and placing a gasket between the second clamp 320 and the first locking piece 330 to disperse the pressure, and then fixing the first clamp 310 on the second clamp 320 of the fastening fitting 300 through the first locking piece 330, so that the internal prestressed concrete pipe pile is fixed while the fastening fitting 300 is connected to the fixing piece 200.

[0057] The present invention discloses an internal prestressed concrete pipe pile tie-fixing device and a construction method thereof, comprising: an adjustable tie-fixing assembly, a fixing piece and a fastening accessory, wherein one end of the adjustable tie-fixing assembly is fixedly connected to the fixing piece, and the fixing piece is also fixedly connected to the fastening accessory; wherein the fastening accessory is used to adapt to the internal prestressed concrete pipe pile; the embodiment of the present invention effectively prevents the internal prestressed concrete pipe pile from tilting, displacement and other problems through the fixing piece and the fastening accessory, and conveniently adjusts the distance between adjacent pipe piles through the adjustable tie-fixing assembly to meet different engineering requirements; in addition, the connection method among the adjustable tie-fixing assembly, the fixing piece and the fastening accessory is a detachable connection, which can be reused; and the structure is simple, the installation is convenient, and the construction period is effectively shortened.

[0058] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A device for fixing and tying internal prestressed concrete pipe piles, characterized in that: include: An adjustable anchor assembly, a fixing and a fastening accessory, wherein one end of the adjustable anchor assembly is fixedly connected to the fixing, and the fixing is also fixedly connected to the fastening accessory; wherein the fastening accessory is used to adapt to an internal prestressed concrete pipe pile.

2. The internal prestressed concrete pipe pile anchoring device according to claim 1 is characterized in that: The fastening accessory includes a first clamp, a second clamp and a first locking piece. The first clamp is connected to the second clamp, and the first clamp is fixedly arranged on the second clamp through the first locking piece.

3. The internal prestressed concrete pipe pile anchoring device according to claim 1 is characterized in that: The adjustable tie assembly includes a first tie rod, an adjustment member and a second tie rod, wherein the first tie rod is movably connected to one end of the adjustment member, the other end of the adjustment member is movably connected to one end of the second tie rod, and the other end of the second tie rod is fixedly connected to the fixing member; wherein the adjustment member is used to adjust the lengths of the first tie rod and the second tie rod.

4. The internal prestressed concrete pipe pile anchoring device according to claim 2 is characterized in that: The fastening accessory further comprises a clamp protective sleeve, and the clamp protective sleeve is arranged on the outer surface of the first clamp.

5. The internal prestressed concrete pipe pile anchoring device according to claim 4 is characterized in that: The fastening accessory also includes an arc-shaped friction pad, which is arranged on the second clamp and is used to increase the friction between the first clamp and the internal prestressed concrete pipe pile.

6. The internal prestressed concrete pipe pile anchoring device according to claim 5, characterized in that: The fastening accessory further includes a gasket, and the gasket is arranged between the first locking member and the second clamp.

7. The internal prestressed concrete pipe pile anchoring device according to claim 3 is characterized in that: It also includes a second locking member, which is disposed between the second tie rod and the fixing member to fix the second tie rod and the fixing member.

8. The internal prestressed concrete pipe pile anchoring device according to claim 7, characterized in that: The left and right ends of the adjusting member are respectively provided with a first threaded through hole and a second threaded through hole. The first tie rod passes through the first threaded through hole and is movably connected to one end of the adjusting member. The second tie rod passes through the second threaded through hole and is movably connected to the other end of the adjusting member.

9. A construction method for an internal prestressed concrete pipe pile tie-and-fix device, applied to the internal prestressed concrete pipe pile tie-and-fix device according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: S1. Install fastening accessories on the internal prestressed concrete pipe piles; S2, connecting the fastening fitting equipped with the internal prestressed concrete pipe pile to the fixing piece, and fixing the fixing piece to one end of the second tie rod of the adjustable tie assembly through a second locking piece; S3, movably connecting the other end of the second tie rod to one end of the adjusting member of the adjustable tie assembly, and movably connecting the other end of the adjusting member to the first tie rod of the adjustable tie assembly.

10. The construction method of the internal prestressed concrete pipe pile tie-fixing device according to claim 9, characterized in that: The method of connecting the fastening fittings equipped with the internal prestressed concrete pipe piles with the fixing parts comprises: The first clamp of the fastening accessory is penetrated and arranged on the elliptical through hole of the fixing piece, and the first clamp is fixedly arranged on the second clamp of the fastening accessory through a first locking piece, so as to fix the internal prestressed concrete pipe pile.

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