A prefabricated pipe pile support hanging plate water-stopping structure and construction method thereof

Abstract

This invention relates to the field of foundation pit maintenance technology, specifically to a precast pipe pile support hanging plate water-stop structure and its construction method. The water-stop structure includes a plurality of precast piles spaced apart, with a hanging plate assembly between adjacent precast piles. The hanging plate assembly includes a plurality of hanging plates connected sequentially along the vertical direction; adjacent hanging plates are connected by a water-stop assembly. This invention sets the hanging plates between precast piles as multiple small hanging plates of the same size and sets water-stop assemblies between adjacent hanging plates to prevent water seepage at the joints of the hanging plates, making the processing and installation of the hanging plates more convenient, while also taking into account the waterproof function of the support system.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit maintenance, and in particular to a prefabricated pipe pile supporting hanging plate water-stopping structure and a construction method thereof. Background Art

[0002] During the construction of underground structures, foundation pit support is usually required. Foundation pit support is a support, reinforcement and protection measure for the side walls of the foundation pit and the surrounding environment to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit. The foundation pit support structure not only requires structural support, but also with the increase of the depth of the foundation pit, there will often be water seepage underground, and the foundation pit support structure also needs to have a water-stopping function.

[0003] At present, foundation pit support usually adopts the form of cast-in-place piles combined with water-stop curtains, or adopts the form of underground continuous walls; for example, a supporting water-stop curtain disclosed in the prior art CN107975042A includes supporting cast-in-place piles arranged at intervals along the foundation pit wall, a crown beam is arranged at the top of the supporting cast-in-place piles, a protective layer is arranged on the side of the supporting cast-in-place piles close to the side wall of the main structure, the protective layer includes a steel mesh layer and a waterproof membrane layer arranged in sequence, and the mesh steel bars are arranged on the side close to the supporting cast-in-place piles. It also includes a construction method of the supporting water-stop curtain, including arranging supporting cast-in-place piles along the foundation pit wall; treating the surface of the supporting cast-in-place piles; fixing the supporting cast-in-place piles; and arranging a protective layer on the side of the supporting cast-in-place piles close to the side wall of the main structure.

[0004] The construction of cast-in-place piles and underground continuous walls needs to be carried out on site, which results in a long construction time, a large impact on the environment, and requires more construction machinery. Therefore, people replace cast-in-place piles with precast piles. Precast piles can be precast in advance in the factory to reduce the construction time on the construction site. For example, the prior art CN215053073U discloses a water-stop combined precast pile foundation pit support structure, which includes precast piles, and the two sides of the precast piles are respectively welded with female water stop buckles along the axial direction of the pile body. The female water stop buckles of adjacent precast piles are connected by H-shaped steel. The two flange plates of the H-shaped steel are respectively connected to the female water stop buckles, and the outer sides of the H-shaped steel flange plates are respectively welded with grouting pipes. Preferably, the female water stop buckle is C-shaped or semicircular, and a notch is vertically opened in the middle of the female water stop buckle. The web of the H-shaped steel is located in the notch of the two adjacent female water stop buckles, and the flange plate of the H-shaped steel is located on the inner side of the female water stop buckle. The foundation pit support structure greatly shortens the construction period and is conducive to construction in a narrow space. Summary of the invention

[0005] The prior art uses a water-stopping structure of prefabricated piles combined with steel sections. The H-shaped steel used is large in size and difficult to install. If it is cut into small-sized steel sections that are easy to install, the connection structure between each steel section will affect the water-stopping function. Therefore, in order to solve the technical problem that the water-stopping function and installation convenience cannot be taken into account in the prior art, the present invention provides a prefabricated pipe pile support hanging plate water-stopping structure and a construction method thereof.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A prefabricated pipe pile support hanging plate water-stopping structure comprises a plurality of prefabricated piles arranged at intervals, a hanging plate assembly is arranged between two adjacent prefabricated piles, the hanging plate assembly comprises a plurality of hanging plates, and the plurality of hanging plates are connected in sequence along the vertical direction; two upper and lower adjacent hanging plates are connected by the water-stopping assembly.

[0008] Furthermore, a wedge block is arranged on one side of the precast pile close to the foundation pit, and a fitting is arranged on the side surface of one side of the wedge block. The fitting is hollow inside and has an opening on one side; the side end surface of the hanging plate is embedded in the fitting.

[0009] Furthermore, the engaging part is a channel steel having a first side and a second side, the inner wall of the first side is in contact with the side of the hanging plate; there is a certain interval between the inner wall of the second side and the other side of the hanging plate, and the interval is 0.4-0.5 times the thickness of the hanging plate.

[0010] Furthermore, there is a certain interval between the bottom wall of the channel steel and the side end surface of the hanging plate.

[0011] Furthermore, the interior of the channel steel is filled with cement grouting.

[0012] Furthermore, a first waterstop steel plate is arranged on the outside of the wedge block, and the first waterstop steel plate is extended along the surface of the wedge block away from the precast pile until it covers the outer surface of the second side of the channel steel, bends toward one side of the hanging plate, abuts against the side of the hanging plate, and extends a certain length along the side of the hanging plate.

[0013] Furthermore, two first embedded steel plates and two second embedded steel plates are arranged on the side of the hanging plate close to the foundation pit, the two first embedded steel plates are located on the left and right sides of the hanging plate, and the two second embedded steel plates are located on the upper and lower sides of the hanging plate; and the two first embedded steel plates and the two second embedded steel plates are connected end to end in sequence.

[0014] Furthermore, the first water-stop steel plate is fixedly connected to the first embedded steel plate.

[0015] Furthermore, the waterstop component is a second waterstop steel plate, which is arranged on the side of the connection between two adjacent hanging plates, and the upper end of the second waterstop steel plate is connected to the second embedded steel plate of the upper hanging plate, and the lower end of the second waterstop steel plate is connected to the second embedded steel plate of the lower hanging plate.

[0016] Furthermore, the second waterstop steel plate extends close to the end surface of the first embedded steel plate to overlap with the first waterstop steel plate, and clamps the end surface of the first waterstop steel plate between the first embedded steel plate and the second waterstop steel plate.

[0017] Furthermore, a plurality of pre-embedded steel bars are arranged on the upper end surface of the hanging plate, a plurality of steel bar holes are arranged on the lower end surface of the hanging plate, and the pre-embedded steel bars and the steel bar holes are arranged correspondingly.

[0018] Furthermore, a plurality of cushion blocks are disposed on the upper end surface and the lower end surface of the hanging plate.

[0019] The present invention also provides a construction method of a prefabricated pipe pile support hanging plate water-stopping structure, which is applied to the above-mentioned prefabricated pipe pile support hanging plate water-stopping structure, comprising:

[0020] S1. Pre-embed a first pre-embedded steel plate and a second pre-embedded steel plate on the side of the hanging plate, and arrange pre-embedded steel bars on the upper end surface of the hanging plate, and process steel bar holes on the lower end surface of the hanging plate;

[0021] S2, welding the wedge to the steel plate on the surface of the precast pile, and welding the channel steel to the wedge;

[0022] S3, installing the hanging plate between the two prefabricated piles, and embedding the side end surface of the hanging plate into the channel steel;

[0023] S4. The upper and lower adjacent hanging plates are connected by embedded steel bars and steel bar holes;

[0024] S5, welding the first water stop steel plate to the first embedded steel plate, and then grouting the inside of the channel steel;

[0025] S6, welding the second waterstop steel plate to the second embedded steel plate, and welding the end of the second waterstop steel plate to the first waterstop steel plate;

[0026] S7. Repeat steps S3-S6 until the entire prefabricated pipe pile support system is completed.

[0027] Furthermore, step S4 also includes welding the spacers between the upper and lower adjacent hanging plates after the embedded steel bars are inserted into the steel bar holes.

[0028] Furthermore, when the hanging plate is installed between two prefabricated piles, the hanging plate angle is monitored, and the hanging plate angle is adjusted by setting an adjustment pad between the inner wall of the first side and the side of the hanging plate; at the same time, the parallelism between the upper and lower adjacent hanging plates is monitored, and the parallelism between the hanging plates is adjusted by setting an adjustment pad between the upper and lower hanging plates.

[0029] Furthermore, step S6 also includes, after the end of the second waterstop steel plate is welded to the first waterstop steel plate, filling waterproof cement grouting between the upper and lower adjacent hanging plates.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The prefabricated pipe pile support hanging plate waterproof structure provided by the present invention sets the hanging plates between the prefabricated piles as a plurality of small hanging plates of the same size, and arranges waterproof components between adjacent hanging plates to avoid water seepage at the connection points of the hanging plates, making the processing and installation of the hanging plates more convenient while taking into account the waterproof function of the support system.

[0032] The prefabricated pipe pile supporting hanging plate waterproof structure provided by the present invention has an embedded steel plate at the edge of the hanging plate, and a first waterproof steel plate is arranged on the side of the prefabricated pile. At the same time, a second waterproof steel plate is arranged at the connection between the upper and lower adjacent hanging plates. The embedded steel plate, the first waterproof steel plate and the second waterproof steel plate are welded to each other to form a complete waterproof system, which greatly improves the waterproof effect.

[0033] The present invention arranges wedges on the side of the prefabricated piles and welds channel steel on the wedges. The channel steel is not only easy to obtain and process, but also can provide a guide for the installation of the hanging plate. At the same time, a first water-stopping steel plate is arranged outside the channel steel and the wedges, and the hanging plates in the left and right directions are connected through the first water-stopping steel plate, thereby forming an overall support and waterproof system.

[0034] The present invention injects cement grouting into the channel steel, so that the prefabricated piles and the hanging plates form a waterproof structure with a stable structure, which greatly improves the service life and waterproof performance of the support system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a top view of the first embodiment of the present invention.

[0036] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0037] Figure 3 This is a schematic diagram of the structure after the hanging plate is pre-embedded with steel plates and pre-embedded with steel bars in Example 1.

[0038] Figure 4 This is a schematic diagram of the structure of the upper and lower hanging plates connected in Example 1. In order to show the structure in the figure, the upper and lower hanging plates are separated. In the actual construction process, the pads between the upper and lower hanging plates need to be welded together.

[0039] Figure 5 for Figure 4 In the enlarged view of point B, the upper and lower hanging plates are separated in order to show the structure. During the actual construction process, the pads between the upper and lower hanging plates need to be welded together.

[0040] Figure 6 It is a complete structural diagram of embodiment 1.

[0041] Description of reference numerals:

[0042] 1. Precast piles, 2. Hanging plates, 3. Wedges, 4. Channel steels, 41. First side, 42. Second side, 5. First waterstop steel plate, 6. First embedded steel plate, 7. Second embedded steel plate, 8. Second waterstop steel plate, 9. Embedded steel bars, 10. Steel bar holes, 11. Spacers, 12. Foundation pit. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the protection scope of the present invention.

[0044] It should be noted that, unless otherwise specifically stated, the relative arrangement of the components and steps, numerical expressions and numerical values ​​described in these embodiments should not be understood as limiting the scope of the present invention. In addition, it should be understood that, for ease of description, the sizes of the various components shown in the drawings are not necessarily drawn according to the actual proportional relationship, for example, the thickness, width, length or distance of some units may be magnified relative to other structures.

[0045] The following description of the exemplary embodiments is merely illustrative and is not intended to limit the present invention and its application or use in any sense. Techniques, methods and devices known to ordinary technicians in the relevant field may not be discussed in detail here, but where applicable, these techniques, methods and devices should be considered as part of this specification.

[0046] Embodiment 1

[0047] The present embodiment provides a prefabricated pipe pile support hanging plate water-stopping structure, including a plurality of prefabricated piles 1 arranged at intervals, wherein the prefabricated piles 1 are semi-finished products prefabricated in the factory. During construction, the prefabricated prefabricated piles are directly transported to the construction site, and the prefabricated piles are inserted into the base at intervals. The prefabricated piles 1 in the present embodiment are cylindrical, and the outer surface of the prefabricated piles 1 has a steel plate. A hanging plate assembly is arranged between two adjacent prefabricated piles 1, and the hanging plate assembly includes a plurality of hanging plates 2, and the plurality of hanging plates 2 are connected in sequence in the vertical direction; two upper and lower adjacent hanging plates 2 are connected by a water-stopping assembly.

[0048] like Figure 1 As shown, a wedge block 3 is arranged on the side of the precast pile 1 close to the foundation pit 12, and the surface of the wedge block 3 in contact with the precast pile 1 is an arc-shaped surface, and the wedge block 3 is welded to the steel plate on the precast pile 1; a channel steel 4 is arranged on the side of one side of the wedge block 3, and the channel steel 4 is hollow inside and has one side open; the side end surface of the hanging plate 2 is embedded in the channel steel 4. Multiple wedge blocks 3 can be arranged along the vertical direction of the precast pile 1, and multiple wedge blocks 3 are arranged at intervals, which can reduce the use of wedge blocks 3.

[0049] The channel steel 4 needs to be arranged continuously along the vertical direction of the precast pile 1. Figure 2 As shown, the channel steel 4 has a first side 41 and a second side 42, the inner wall of the first side 41 contacts the side of the hanging plate 2, preferably the inner wall of the first side 41 contacts and is connected to the side of the hanging plate 2 via a pad; there is a certain distance between the inner wall of the second side 42 and the other side of the hanging plate 2, and the distance is 0.4-0.5 times the thickness of the hanging plate 2. In addition, there is also a certain distance between the bottom wall of the channel steel 4 and the side end surface of the hanging plate 2.

[0050] The first water-stopping steel plate 5 is arranged outside the wedge block 3, and the first water-stopping steel plate 5 is arranged along the surface of the wedge block 3 away from the precast pile 1. Figure 2 It extends from left to right until it covers the outer surface of the second side edge 42 of the channel steel 4, bends toward the side of the hanging plate 2, abuts the side of the hanging plate 2, and then extends a certain length along the side of the hanging plate 2. The first water-stopping steel plate 5 closes the opening of the channel steel 4, and the internal cavity of the channel steel 4 is filled with cement grouting, so that the precast pile 1, the wedge block 3, the channel steel 4, and the hanging plate 2 form a structurally stable whole. At the connection between two adjacent precast piles 1, the first water-stopping steel plate 5 can be set as an integrated structure, that is, a "J"-shaped structure, so that the hanging plate components between adjacent precast piles 1 are connected as a waterproof whole.

[0051] The wedge block 3 can be made of steel plate, which is easy to weld. The hanging plate 2 is prefabricated with concrete, has a waterproof function, and can also shorten the on-site construction time and reduce the on-site construction cost.

[0052] For the specific structure of the hanging plate 2, such as Figure 3As shown, two first embedded steel plates 6 and two second embedded steel plates 7 are arranged on the side of the hanging plate 2 close to the foundation pit 12, the two first embedded steel plates 6 are located on the left and right sides of the hanging plate 2, and the two second embedded steel plates 7 are located on the upper and lower sides of the hanging plate 2; and the two first embedded steel plates 6 and the two second embedded steel plates 7 are connected end to end in sequence, or the two ends of the second embedded steel plates 7 extend to the edge of the hanging plate 2. The outer surfaces of the first embedded steel plates 6 and the second embedded steel plates 7 are both flush with the outer surface of the hanging plate 2, that is, the first embedded steel plates 6 and the second embedded steel plates 7 are embedded in the hanging plate 2.

[0053] A plurality of embedded steel bars 9 are arranged on the upper end surface of the hanging plate 2, and a plurality of steel bar holes 10 are arranged on the lower end surface of the hanging plate 2, and the embedded steel bars 9 and the steel bar holes 10 are arranged correspondingly. When the upper hanging plate 2 is installed on the lower hanging plate, the embedded steel bars 9 of the lower hanging plate 2 can be inserted into the steel bar holes 10 of the upper hanging plate 2 to achieve alignment between adjacent hanging plates. At the same time, a plurality of pads 11 are arranged on the upper end surface of the hanging plate 2 and the lower end surface of the hanging plate 2. When the upper hanging plate 2 is installed on the lower hanging plate 2, the pads 11 of the upper and lower hanging plates 2 are aligned and in contact, and the structural stability between the upper and lower hanging plates is ensured by welding the pads 22 of the upper and lower hanging plates.

[0054] When the hanging plate 2 is embedded in the channel steel 4 and the first waterstop steel plate 5 is placed in place, the end surface of the first waterstop steel plate 5 overlaps the first embedded steel plate 6 by a certain length, and then the first waterstop steel plate 5 and the first embedded steel plate 6 are welded and fixed.

[0055] The upper and lower adjacent hanging boards 2 are connected by water-stop components to achieve waterproofing. Figure 4 As shown, the waterstop component is a second waterstop steel plate 8, which is arranged on the side of the connection between two adjacent hanging plates 2, and the upper end of the second waterstop steel plate 8 is connected to the second embedded steel plate 7 of the upper hanging plate, and the lower end of the second waterstop steel plate 8 is connected to the second embedded steel plate 7 of the lower hanging plate.

[0056] Combination Figure 2 As shown, the second waterproof steel plate 8 is extended close to the end surface of the first embedded steel plate 6 to overlap with the first waterproof steel plate 5, and the end surface of the first waterproof steel plate 5 is sandwiched between the first embedded steel plate 6 and the second waterproof steel plate 8, thereby further improving the waterproof performance.

[0057] Combination Figure 5 As shown in FIG. 1 , when the upper and lower adjacent hanging plates 2 are connected, there is a certain gap between the adjacent hanging plates 2 due to the support of the pad 11, and cement grouting is filled in the gap between the upper and lower hanging plates 2 to form another waterproof structure. In actual construction projects, multiple precast piles 1 are set according to design requirements, and the structures between the multiple precast piles 1 are repeated to form a waterproof structure as shown in FIG. Figure 6 The integral prefabricated pile support hanging plate waterproof structure shown.

[0058] Embodiment 2

[0059] This embodiment provides a construction method of a prefabricated pipe pile support hanging plate water-stopping structure, which is applied to the prefabricated pipe pile support hanging plate water-stopping structure provided in the first embodiment, and includes:

[0060] S1. Use concrete pouring to make the hanging plate 2, and at the same time, embed the first embedded steel plate 6 and the second embedded steel plate 7 on the side of the hanging plate 2, and set the embedded steel bar 9 on the upper end surface of the hanging plate 2, and process the steel bar hole 10 on the lower end surface of the hanging plate 2; embed the pad 11 on the upper and lower end surfaces of the hanging plate 2;

[0061] S2, welding the wedge block 3 to the steel plate on the surface of the prefabricated pile 1, and welding the channel steel 4 to the wedge block 3;

[0062] S3. Install the hanging plate 2 between the two prefabricated piles 1, and embed the side end face of the hanging plate 2 into the channel steel 4; when the hanging plate 2 is embedded in the channel steel 4, make one side surface of the hanging plate 2 close to the pad in the first side edge 41 of the channel steel 4, and monitor the angle of the hanging plate. For the first hanging plate installed, it is sufficient to ensure that the hanging plate and the pad are close to each other. For the hanging plates installed subsequently, it is necessary to ensure the degree of alignment between the hanging plate and the adjacent hanging plate below. If they are not aligned, they need to be adjusted. Specifically, the hanging plate angle can be adjusted by setting an adjustment pad between the inner wall of the first side edge and the side face of the hanging plate so that the upper and lower adjacent hanging plates are located in the same plane; at the same time, monitor the parallelism between the upper and lower adjacent hanging plates, and adjust the parallelism between the hanging plates by setting an adjustment pad between the upper and lower hanging plates.

[0063] S4, the upper and lower adjacent hanging plates 2 are connected by embedded steel bars 9 and steel bar holes 10, and the spacers 11 between the upper and lower adjacent hanging plates 2 are welded;

[0064] S5, welding the first water stop steel plate 5 to the first embedded steel plate 6, and then grouting the inside of the channel steel 4 to form a vertical waterproof system;

[0065] S6. Weld the second waterstop steel plate 8 to the second embedded steel plate 7, and weld the end of the second waterstop steel plate 8 to the first waterstop steel plate 5 to form a horizontal waterproof system; then fill waterproof cement grouting between the upper and lower adjacent hanging plates 2 to form a vertical waterproof system.

[0066] S7. Repeat steps S3-S6 until the entire prefabricated pipe pile support system is completed.

[0067] The present invention realizes the continuous waterproof structure formed by the second embedded steel plate 7 on the hanging plate 2, the side surface of the hanging plate and the second water stop steel plate 8. Figure 1 The horizontal waterproof system from top to bottom as shown; a continuous waterproof structure formed by the first water-stop steel plate 5, the first embedded steel plate 6, the second water-stop steel plate 8, and the cement grouting in the channel steel 4 is realized as Figure 1 By filling waterproof cement grouting between the hanging plates 2 and combining the second water-stop steel plate 8, a vertical waterproof system is formed as shown in FIG. Figure 4 The vertical waterproof system from top to bottom as shown can realize the all-directional anti-seepage and waterproofing of the prefabricated pipe pile support hanging plate water-stop structure, which not only facilitates transportation and installation but also greatly improves the waterproofing function while shortening the construction period.

[0068] The above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, a person skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A prefabricated pipe pile support hanging plate water-stopping structure, comprising a plurality of prefabricated piles arranged at intervals, characterized in that: A hanging plate assembly is arranged between two adjacent precast piles, wherein the hanging plate assembly comprises a plurality of hanging plates, and the plurality of hanging plates are sequentially connected in a vertical direction; two hanging plates adjacent to each other are connected by a water stop assembly; A wedge block is arranged on one side of the prefabricated pile close to the foundation pit, and a fitting piece is arranged on the side of one side of the wedge block, wherein the fitting piece is hollow inside and one side is open; the side end surface of the hanging plate is embedded in the fitting piece; The engaging member is a channel steel having a first side and a second side, wherein the inner wall of the first side contacts the side of the hanging plate; the inner wall of the first side contacts and is connected to the side of the hanging plate via a pad; There is a certain distance between the inner wall of the second side and the other side of the hanging plate. There is a certain distance between the bottom wall of the channel steel and the side end surface of the hanging plate; The interior of the channel steel is filled with cement grouting; A first water-stop steel plate is arranged outside the wedge block, and the first water-stop steel plate is extended along the surface of the wedge block away from the precast pile until it covers the outer surface of the second side of the channel steel, bends toward one side of the hanging plate, abuts against the side of the hanging plate, and extends a certain length along the side of the hanging plate; Two first embedded steel plates and two second embedded steel plates are arranged on the side of the hanging plate close to the foundation pit, the two first embedded steel plates are located on the left and right sides of the hanging plate, and the two second embedded steel plates are located on the upper and lower sides of the hanging plate; and the two first embedded steel plates and the two second embedded steel plates are connected end to end in sequence; The first water stop steel plate is fixedly connected to the first embedded steel plate; The water-stop component is a second water-stop steel plate, which is arranged on the side of the connection between two adjacent hanging plates, and the upper end of the second water-stop steel plate is connected to the second embedded steel plate of the upper hanging plate, and the lower end of the second water-stop steel plate is connected to the second embedded steel plate of the lower hanging plate; The second waterstop steel plate extends close to the end surface of the first embedded steel plate to overlap with the first waterstop steel plate, and clamps the end surface of the first waterstop steel plate between the first embedded steel plate and the second waterstop steel plate.

2. The prefabricated pipe pile support hanging plate water-stopping structure according to claim 1 is characterized in that: The interval is 0.4-0.5 times the thickness of the hanging plate.

3. The prefabricated pipe pile support hanging plate water-stopping structure according to claim 1 is characterized in that: A plurality of embedded steel bars are arranged on the upper end surface of the hanging plate, and a plurality of steel bar holes are arranged on the lower end surface of the hanging plate, and the embedded steel bars and the steel bar holes are arranged correspondingly.

4. The prefabricated pipe pile support hanging plate water-stopping structure according to claim 1 is characterized in that: A plurality of cushion blocks are arranged on the upper end surface and the lower end surface of the hanging plate.

5. A construction method of a prefabricated pipe pile support hanging plate water-stopping structure, applied to the prefabricated pipe pile support hanging plate water-stopping structure according to claim 3 or 4, characterized in that: include: S1. Pre-embed a first pre-embedded steel plate and a second pre-embedded steel plate on the side of the hanging plate, and arrange pre-embedded steel bars on the upper end surface of the hanging plate, and process steel bar holes on the lower end surface of the hanging plate; S2, welding the wedge to the steel plate on the surface of the precast pile, and welding the channel steel to the wedge; S3, installing the hanging plate between the two prefabricated piles, and embedding the side end surface of the hanging plate into the channel steel; S4. The upper and lower adjacent hanging plates are connected by embedded steel bars and steel bar holes; S5, welding the first water stop steel plate to the first embedded steel plate, and then grouting the inside of the channel steel; S6, welding the second waterstop steel plate to the second embedded steel plate, and welding the end of the second waterstop steel plate to the first waterstop steel plate; S7. Repeat steps S3-S6 until the entire prefabricated pipe pile support system is completed.

6. The construction method according to claim 5, characterized in that: When the hanging plate is installed between two prefabricated piles, the hanging plate angle is monitored, and the hanging plate angle is adjusted by setting an adjustment pad between the inner wall of the first side and the side of the hanging plate; at the same time, the parallelism between the upper and lower adjacent hanging plates is monitored, and the parallelism between the hanging plates is adjusted by setting an adjustment pad between the upper and lower hanging plates.

7. The construction method according to claim 5, characterized in that: Step S6 also includes, after the end of the second waterstop steel plate is welded to the first waterstop steel plate, filling waterproof cement grouting between the upper and lower adjacent hanging plates.

Images