A construction device and method for a precast pipe pile support hanging plate

Abstract

The present invention discloses a construction device and method for precast pipe pile supporting hanging plates, which relates to the field of deep foundation pit supporting structures. The key points of its technical solution are as follows: through the detection results of two pressure sensors in the vertical direction and the increase or decrease of horizontal adjusting pads, the verticality of each precast hanging plate is corrected, reducing the influence of the shape accuracy of the precast hanging plate itself on the verticality of the entire hanging plate surface; by controlling the screwing length of the adjusting bolts in the slots and the filling of flexible gaskets, the position adjustment of the precast hanging plate in the horizontal direction is realized, thereby improving the flatness of the entire hanging plate surface. In addition, the present invention also preliminarily positions two adjacent precast hanging plates in the horizontal and vertical directions through the cooperation of inserted bars and insertion holes between the upper and lower precast hanging plates, so as to save the time for adjusting the position of the precast hanging plate and improve the construction efficiency of the hanging plate. The present invention fully considers the influence of the shape accuracy of the precast hanging plate itself on the final completion quality of the entire hanging plate surface, and improves the final completion quality of the entire hanging plate surface.

Description

Technical Field

[0001] The present invention relates to the field of deep foundation pit support structures, and more specifically, it relates to a construction device and method for precast pipe pile support hanging plates. Background Art

[0002] Deep foundation pit support refers to measures for retaining, reinforcing, and protecting the side walls of deep foundation pits and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. The hanging plate support technology is a common deep foundation pit support technology, which is a technology that hangs multiple precast hanging plates on the foundation pit wall through pipe piles pre-set in the foundation pit to improve the stability and safety of the foundation pit wall.

[0003] In view of the inconvenience of disassembly and installation during the connection of hanging plates, Chinese Patent CN115748593A discloses a construction method for a double-row prestressed pipe pile hanging plate continuous wall. The construction steps include: using a pile driver to vertically hoist two prestressed pipe piles and insert them into the soil, and then sinking the piles after correcting the levelness and verticality; fixing the track on the ground, installing a moving bottom plate and a trapezoidal control frame, and moving the precast hanging plate to the sinking position; setting the hanging plate between adjacent prestressed pipe piles, setting templates on both sides of the hanging plate, and installing detachable collars through tie rods; setting a shaping template inside the geotextile, and filling slurry between the hanging plate and the shaping template; tying the corbel steel bars, fixing the pipe pile steel collar on the prestressed pipe pile, and installing fixed brackets and templates, and then pouring and curing the concrete. This patent can not only improve the stability of the formwork structure of the cast-in-place hanging plate, improve the installation speed and effect of the precast hanging plate, improve the construction quality and efficiency of the corbel formwork, and the bearing capacity of the structure, but also ensure the pile-forming quality and appearance, save land resources, reduce noise pollution and dust at the site, and greatly improve the on-site construction efficiency and quality, and can achieve good technical and economic benefits when applied to practical projects.

[0004] In this patent, the precast hanging plate is sunk section by section from top to bottom between two prestressed pipe piles with corrected levelness and verticality, without considering the shape accuracy of the precast hanging plate itself, that is, no further verticality correction is carried out on the precast hanging plate itself, and the verticality of the entire hanging plate and the final completion quality need to be further improved. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a construction device and method for precast pipe pile support hanging plates, which correct the verticality of each precast hanging plate through the detection results of two pressure sensors in the vertical direction and in cooperation with the increase or decrease of horizontal adjusting pads, reduce the influence of the shape accuracy of the precast hanging plate itself on the verticality of the entire hanging plate, and reduce the influence of the shape accuracy of the precast hanging plate itself on the final completion quality of the entire hanging plate.

[0006] To achieve the above object, the present invention provides the following technical solutions: a construction device for a precast pipe pile support hanging plate, which includes precast pipe piles, precast hanging plates, horizontal adjustment pads, pressure sensors, slots and foundation pit top supports.

[0007] Two precast pipe piles are vertically driven into the ground; two slots are respectively and vertically fixed on the two sides of the two precast pipe piles close to each other; multiple precast hanging plates are sequentially and vertically lowered and inserted into the two slots from top to bottom.

[0008] In each group of slots, there are multiple vertically distributed mounting slots on one of the slots, and every two mounting slots correspond to one precast hanging plate; during the sinking process of each precast hanging plate, a pressure sensor can be detachably fixed in the two corresponding mounting slots; the pressure sensor is used to detect the pressure exerted by the precast hanging plate on the pressure sensor along the radial direction of the precast pipe pile.

[0009] The foundation pit top support is used to support the bottommost precast hanging plate to a preset position. When the pressures detected by the two pressure sensors are the same, the bottom of the bottommost precast hanging plate is filled with soil, and the foundation pit top support is withdrawn; when the remaining precast hanging plates are sunk, horizontal adjustment pads are laid at various positions between the precast hanging plate and the precast hanging plate below it according to the detection results of the two pressure sensors until the pressures detected by the two pressure sensors are the same, and the two precast hanging plates and all the horizontal adjustment pads between the two precast hanging plates are fixedly connected.

[0010] The present invention is further provided as follows: it further includes inserted bars. Multiple vertically arranged inserted bars are fixed on the top of each precast hanging plate, and jacks for accommodating the inserted bars are correspondingly arranged at the bottom of each precast hanging plate, and the jacks correspond to the inserted bars one by one.

[0011] The present invention is further provided as follows: all the inserted bars on the top of each precast hanging plate are linearly arranged along the horizontal length of the precast hanging plate, and horizontal adjustment pads are laid between every two adjacent inserted bars.

[0012] The present invention is further provided as follows: it further includes flexible gaskets, and the flexible gaskets are filled and fixed between the precast hanging plates and the slots.

[0013] The present invention is further provided as follows: it further includes adjusting bolts. Adjusting bolts are arranged on each slot, and each precast hanging plate corresponds to a group of adjusting bolts, with at least one adjusting bolt in each group. All the adjusting bolts on each slot are vertically arranged; the adjusting bolts horizontally pass through the slots and are threadedly connected to the slots, and the adjusting bolts are abutted against the precast hanging plates. The adjusting bolts and the flexible gaskets are respectively located on both sides of the precast hanging plate; each precast hanging plate corresponds to at least two adjusting bolts.

[0014] The present invention is further provided as follows: it further includes connecting blocks. The slots are U-shaped steel channels, and the precast pipe piles are steel pipe piles. The connecting blocks are filled and welded between the U-shaped steel channels and the steel pipe piles.

[0015] The present invention is further configured such that: it further includes a plug block, and when no pressure sensor is provided inside each installation groove, a plug block can be detachably fixed inside each of them.

[0016] The present invention also provides a construction method for a precast pipe pile support hanging plate, which uses the above-mentioned construction device for a precast pipe pile support hanging plate, and includes the following steps:

[0017] S1. After the horizontal and vertical degrees of two precast pipe piles are corrected, they are driven into the ground.

[0018] S2. Vertically weld two slots on the two sides of the two precast pipe piles close to each other.

[0019] S3. Insert two pressure sensors into the two installation grooves at the bottommost part respectively; then lower a precast hanging plate into the two slots, use a foundation pit top support to support the bottommost precast hanging plate to a preset position. When the pressures detected by the two pressure sensors are the same, fill the soil at the bottom of the bottommost precast hanging plate, and withdraw the foundation pit top support.

[0020] S4. Move the two pressure sensors up to the two installation grooves corresponding to the next precast hanging plate, lower the next precast hanging plate into the two slots, lay horizontal adjustment pads at various positions between this precast hanging plate and the precast hanging plate below it according to the detection results of the two pressure sensors until the pressures detected by the two pressure sensors are the same, weld and connect the two precast hanging plates and all the horizontal adjustment pads between the two precast hanging plates, and grout and fill the gap between the two precast hanging plates.

[0021] S5. Repeat S4 until all precast hanging plates are fixedly connected together, and draw out the two pressure sensors from the installation grooves where they are located.

[0022] The present invention is further configured such that: before the two precast hanging plates are welded and connected in S4, the horizontal position of the upper precast hanging plate in the two slots is adjustable, and the horizontal position of the precast hanging plate in the slot is defined by filling a flexible gasket between the precast hanging plate and the slot.

[0023] The present invention is further configured such that: a plurality of vertically arranged reinforcing bars are fixed to the top of each precast hanging plate, and corresponding insertion holes for receiving the reinforcing bars are provided at the bottom of each precast hanging plate, and the insertion holes correspond to the reinforcing bars one by one; in S4, when the precast hanging plate is lowered, all the reinforcing bars of the lower precast hanging plate are inserted into the corresponding insertion holes of the upper precast hanging plate.

[0024] In summary, the present invention has the following beneficial effects compared with the prior art: The present invention fully considers the influence of the shape accuracy of the precast wall panel itself on the final quality of the entire wall panel, and improves the final quality of the entire wall panel. Specifically, through the detection results of the two pressure sensors in the vertical direction and the increase or decrease of the horizontal adjusting pads, the verticality of each precast wall panel is corrected, reducing the influence of the shape accuracy of the precast wall panel itself on the verticality of the entire wall panel; by controlling the screwing length of the adjusting bolts in the slots and filling with flexible gaskets, the position adjustment of the precast wall panel in the horizontal direction is realized, thereby improving the flatness of the entire wall panel. In addition, in this embodiment, the horizontal and vertical preliminary positioning of the upper and lower precast wall panels is also realized through the cooperation of the inserted bars and the insertion holes between the upper and lower precast wall panels, so as to save the time for adjusting the position of the precast wall panel and improve the construction efficiency of the wall panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic structural diagram of a construction device for a precast pipe pile supporting wall panel in an embodiment;

[0026] Figure 2 is Figure 1 an enlarged schematic view of area A in

[0027] Figure 3 FIG. is a schematic diagram showing the position of the flexible gasket in the embodiment.

[0028] In the figure: 1, precast pipe pile; 2, precast wall panel; 3, horizontal adjusting pad; 4, pressure sensor; 5, slot; 6, plug; 7, inserted bar; 8, adjusting bolt; 9, connecting block; 10, flexible gasket; 11, cement mortar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions 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. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the invention.

[0030] It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "rear", "transverse", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] Embodiment

[0032] As Figures 1-3As shown in the figure, it is the basic structure of a construction device for precast pipe pile retaining wall panels in a preferred embodiment of the present invention, which includes precast pipe piles 1, precast wall panels 2, horizontal adjustment pads 3, pressure sensors 4, slots 5, and foundation pit top supports.

[0033] Two precast pipe piles 1 are vertically driven into the ground; two slots 5 are respectively and vertically fixed on the two sides of the two precast pipe piles 1 close to each other; multiple precast wall panels 2 are successively and vertically lowered and inserted into the two slots 5 from top to bottom.

[0034] In each group of slots 5, there are multiple vertically distributed mounting slots on one of the slots 5, and every two mounting slots correspond to one precast wall panel 2; during the process of lowering each precast wall panel 2, a pressure sensor 4 can be detachably fixed in the corresponding two mounting slots; the pressure sensor 4 is used to detect the pressure exerted by the precast wall panel 2 on the pressure sensor 4 along the radial direction of the precast pipe pile 1.

[0035] The foundation pit top support is used to support the bottommost precast wall panel 2 to a preset position. When the pressures detected by the two pressure sensors 4 are the same, the bottom of the bottommost precast wall panel 2 is filled with soil, and the foundation pit top support is removed; when the remaining precast wall panels 2 are lowered, horizontal adjustment pads 3 are laid at various positions between the precast wall panel 2 and the precast wall panel 2 below it according to the detection results of the two pressure sensors 4 until the pressures detected by the two pressure sensors 4 are the same, and the two precast wall panels 2 and all the horizontal adjustment pads 3 between the two precast wall panels 2 are fixedly connected.

[0036] According to the detection results of the two pressure sensors 4 and in cooperation with the increase or decrease of the horizontal adjustment pads 3, the verticality of each precast wall panel 2 can be corrected, reducing the influence of the shape accuracy of the precast wall panel 2 itself on the verticality of the entire wall panel and the final completion quality.

[0037] This embodiment further includes dowel bars 7. Multiple vertically arranged dowel bars 7 are fixed on the top of each precast wall panel 2, and jack holes for accommodating the dowel bars 7 are correspondingly arranged at the bottom of each precast wall panel 2, and the jack holes correspond to the dowel bars 7 one by one. Through the cooperation of the dowel bars 7 and the jack holes, the upper and lower precast wall panels 2 are initially positioned in the horizontal and vertical directions, so as to save the time for adjusting the position of the precast wall panel 2.

[0038] Specifically, all the dowel bars 7 on the top of each precast wall panel 2 are linearly arranged along the horizontal length of the precast wall panel 2, and a horizontal adjustment pad 3 is laid between every two adjacent dowel bars 7.

[0039] This embodiment further includes flexible gaskets 10. The flexible gaskets 10 are filled and fixed between the precast wall panels 2 and the slots 5, which can absorb and relieve the vibration and impact generated during the sinking process of the precast wall panels 2, reduce structural noise, and prevent the vibration and impact from being transmitted to other components or building structures.

[0040] This embodiment further includes adjusting bolts 8. Each slot 5 is provided with an adjusting bolt 8. Each precast hanging plate 2 corresponds to a group of adjusting bolts 8, and each group has at least one adjusting bolt 8. All the adjusting bolts 8 on each slot 5 are vertically arranged; the adjusting bolts 8 horizontally pass through the slots 5 and are threadedly connected to the slots 5. The adjusting bolts 8 are abutted against the precast hanging plate 2, and the adjusting bolts 8 and the flexible gaskets 10 are respectively located on both sides of the precast hanging plate 2; each precast hanging plate 2 corresponds to at least two adjusting bolts 8. By controlling the screwing length of the adjusting bolts 8 in the slots 5 and cooperating with the filling of the flexible gaskets 10, the position adjustment of the precast hanging plate 2 in the horizontal direction can be realized, thereby improving the flatness of the entire hanging plate and further improving the final completion quality of the entire hanging plate.

[0041] This embodiment further includes a connecting block 9. The slot 5 is a concave-shaped channel steel, and the precast pipe pile 1 is a steel pipe pile. The connecting block 9 is filled and welded between the concave-shaped channel steel and the steel pipe pile to increase the stability of the connection between the concave-shaped channel steel and the steel pipe pile.

[0042] This embodiment further includes a plug block 6. When no pressure sensor 4 is provided inside each installation slot, a plug block 6 can be detachably fixed inside it, and the plug block 6 can reduce the influence of the installation slot on the supporting function of the slot 5.

[0043] Specifically, this embodiment further includes a lifting device for sinking the precast hanging plate 2. The lifting device is detachably connected to a plurality of reinforcing bars 7 on the precast hanging plate, and the lifting device is not shown in the figure.

[0044] Specifically, in this embodiment, two pressure sensors 4 are signal-connected to the controller of the lifting device. When the pressures detected by the two pressure sensors 4 are inconsistent, the controller of the lifting device is self-locked and the sinking of the precast hanging plate is terminated; when the pressures detected by the two pressure sensors are consistent, the controller of the lifting device releases the self-locking, and the controller of the lifting device can be used to control the lifting device to sink the next precast hanging plate 2.

[0045] This embodiment also provides a construction method for a precast pipe pile supporting hanging plate, which uses the above-mentioned precast pipe pile supporting hanging plate construction device, and includes the following steps:

[0046] S1. After the horizontality and verticality of two precast pipe piles 1 are corrected, they are driven into the ground.

[0047] S2. Vertically weld two slots 5 on the two sides of the two precast pipe piles 1 that are close to each other.

[0048] S3. Insert two pressure sensors 4 into the two bottommost installation grooves respectively; then lower a prefabricated hanging plate 2 into the two slots 5, and use the foundation pit top support to push the bottommost prefabricated hanging plate 2 to the preset position. When the pressures detected by the two pressure sensors 4 are the same, fill the soil under the bottommost prefabricated hanging plate 2, and withdraw the foundation pit top support.

[0049] S4. Move the two pressure sensors 4 upward into the two installation grooves corresponding to the next prefabricated hanging plate 2, lower the next prefabricated hanging plate 2 into the two slots 5, and lay horizontal adjustment pads 3 at various positions between this prefabricated hanging plate 2 and the prefabricated hanging plate 2 below it according to the detection results of the two pressure sensors 4 until the pressures detected by the two pressure sensors 4 are the same. Weld-connect all the horizontal adjustment pads 3 between the two prefabricated hanging plates 2 and grout-fill the gap between the two prefabricated hanging plates 2.

[0050] S5. Repeat S4 until all the prefabricated hanging plates 2 are fixedly connected together, and pull out the two pressure sensors 4 from their respective installation grooves.

[0051] Specifically, before the two prefabricated hanging plates 2 are weld-connected in S4, the horizontal position of the upper prefabricated hanging plate 2 in the two slots 5 can be adjusted by filling flexible gaskets 10, so as to improve the flatness of the entire hanging plate and further improve the final completion quality of the entire hanging plate.

[0052] Specifically, before the two prefabricated hanging plates 2 are weld-connected in S4, the horizontal position of the upper prefabricated hanging plate 2 in the two slots 5 can also be adjusted by controlling the screwing length of the adjusting bolts 8 in the slots 5 and cooperating with the filling of flexible gaskets 10.

[0053] Specifically, when no pressure sensor 4 is installed inside each installation groove, a plug block 6 can be detachably fixed inside it to reduce the influence of the installation groove on the supporting function of the slot 5.

[0054] Specifically, in S4, the gap between the prefabricated hanging plate 2 and the slot 5 also needs to be filled with cement mortar 11 to further fix the position of the prefabricated hanging plate 2.

[0055] Specifically, multiple vertically arranged reinforcing bars 7 are fixed at the top of each prefabricated hanging plate 2, and corresponding insertion holes for the reinforcing bars 7 are provided at the bottom of each prefabricated hanging plate 2, and the insertion holes correspond to the reinforcing bars 7 one by one; in S4, when the prefabricated hanging plate 2 is lowered, all the reinforcing bars 7 of the lower prefabricated hanging plate 2 are inserted into the corresponding insertion holes of the upper prefabricated hanging plate 2 to perform preliminary positioning of the upper and lower prefabricated hanging plates 2 in the horizontal and vertical directions, so as to save the time for adjusting the position of the prefabricated hanging plate 2 and improve the construction efficiency of the hanging plate.

[0056] In summary, this embodiment fully considers the influence of the shape accuracy of the precast panel 2 itself on the final completion quality of the entire panel, and improves the final completion quality of the entire panel. Specifically, by the detection results of the two pressure sensors 4 in the vertical direction, combined with the increase or decrease of the horizontal adjusting pads 3, the verticality of each precast panel 2 is corrected, reducing the influence of the shape accuracy of the precast panel 2 itself on the verticality of the entire panel; by controlling the screwing length of the adjusting bolts 8 in the slots 5, combined with the filling of the flexible gaskets 10, the position adjustment of the precast panel 2 in the horizontal direction is achieved, thereby improving the flatness of the entire panel. In addition, this embodiment also preliminarily positions the upper and lower precast panels 2 in the horizontal and vertical directions through the cooperation of the insertion bars 7 and the insertion holes between the upper and lower precast panels 2, so as to save the time for adjusting the position of the precast panel 2 and improve the construction efficiency of the panel.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction device for precast pipe pile support hanging plates, characterized in that: It includes precast pipe piles (1), precast wall panels (2), horizontal adjusting pads (3), pressure sensors (4), slots (5), and foundation pit top braces; Two precast pipe piles (1) are vertically driven into the ground; two slots (5) are respectively vertically fixed on the two sides of the two precast pipe piles (1) close to each other; multiple precast wall panels (2) are sequentially lowered and inserted into the two slots (5) from top to bottom; In each group of slots (5), multiple mounting grooves are vertically distributed on one of the slots (5), and every two mounting grooves correspond to one precast wall panel (2); during the process of lowering each precast wall panel (2), a pressure sensor (4) can be detachably fixed in the corresponding two mounting grooves; the pressure sensor (4) is used to detect the pressure exerted by the precast wall panel (2) on the pressure sensor (4) along the radial direction of the precast pipe pile (1); The foundation pit top brace is used to brace the bottommost precast wall panel (2) to a preset position. When the pressures detected by the two pressure sensors (4) are the same, the bottom of the bottommost precast wall panel (2) is filled with soil, and the foundation pit top brace is removed; when the remaining precast wall panels (2) are lowered, horizontal adjusting pads (3) are laid at various positions between the precast wall panel (2) and the precast wall panel (2) below it according to the detection results of the two pressure sensors (4) until the pressures detected by the two pressure sensors (4) are the same, and the two precast wall panels (2) and all the horizontal adjusting pads (3) between the two precast wall panels (2) are fixedly connected; It further includes a flexible gasket (10), and the flexible gasket (10) is filled and fixed between the precast wall panel (2) and the slot (5); It further includes adjusting bolts (8). Each slot (5) is provided with adjusting bolts (8). Each precast wall panel (2) corresponds to a group of adjusting bolts (8), and each group has at least one adjusting bolt (8). All the adjusting bolts (8) on each slot (5) are vertically arranged; the adjusting bolts (8) horizontally pass through the slot (5) and are threadedly connected with the slot (5), and the adjusting bolts (8) are abutted against the precast wall panel (2). The adjusting bolts (8) and the flexible gasket (10) are respectively located on both sides of the precast wall panel (2); each precast wall panel (2) corresponds to at least two adjusting bolts (8); By controlling the screwing-in length of the adjusting bolts (8) in the slot (5) and cooperating with the filling of the flexible gasket (10), the position adjustment of the precast wall panel (2) in the horizontal direction is realized.

2. The construction device for a precast pipe pile support hanging plate according to claim 1, characterized in that: It further includes dowel bars (7). Multiple vertically arranged dowel bars (7) are fixed on the top of each precast wall panel (2), and jack holes for accommodating the dowel bars (7) are correspondingly arranged at the bottom of each precast wall panel (2), and the jack holes correspond to the dowel bars (7) one by one.

3. A construction device for a precast pipe pile supporting hanging plate according to claim 2, characterized in that: All the dowel bars (7) on the top of each precast wall panel (2) are linearly arranged along the horizontal length of the precast wall panel (2), and horizontal adjusting pads (3) are laid between every two adjacent dowel bars (7).

4. The construction device for precast pipe pile supporting hanging plates according to claim 1, characterized in that: It further includes a connecting block (9). The slot (5) is a U-shaped channel steel, and the precast pipe pile (1) is a steel pipe pile. The connecting block (9) is filled and welded between the U-shaped channel steel and the steel pipe pile.

5. The construction device for precast pipe pile support hanging plates according to claim 1, characterized in that: It further includes a plug block (6). When no pressure sensor (4) is installed inside each installation groove, a plug block (6) can be detachably fixed inside each of them.

6. A construction method for a precast pipe pile supporting hanging plate, characterized in that: When using the precast pipe pile supporting hanging plate construction device as described in any one of claims 1-5, the following steps are included: S1. After correcting the horizontal and vertical degrees of two precast pipe piles (1), sink the piles. S2. Vertically weld two slot grooves (5) on two sides of the two precast pipe piles (1) close to each other. S3. Insert two pressure sensors (4) into the two installation grooves at the bottommost part respectively; then sink a precast hanging plate (2) into the two slot grooves (5), use the foundation pit top support to support the bottommost precast hanging plate (2) to the preset position. When the pressures detected by the two pressure sensors (4) are the same, fill the soil body at the bottom of the bottommost precast hanging plate (2), and withdraw the foundation pit top support. S4. Move the two pressure sensors (4) upward to the two installation grooves corresponding to the next precast hanging plate (2), sink the next precast hanging plate (2) into the two slot grooves (5), and lay horizontal adjusting pads (3) at various positions between the precast hanging plate (2) and the precast hanging plate (2) below it according to the detection results of the two pressure sensors (4) until the pressures detected by the two pressure sensors (4) are the same. Weld and connect the two precast hanging plates (2) and all the horizontal adjusting pads (3) between the two precast hanging plates (2), and grout and fill the gap between the two precast hanging plates (2). S5. Repeat S4 until all the precast hanging plates (2) are fixedly connected together, and pull out the two pressure sensors (4) from their corresponding installation grooves.

7. A construction method of a precast pipe pile supporting hanging plate according to claim 6, characterized in that: Before the two precast hanging plates (2) are welded and connected in S4, the horizontal position of the upper precast hanging plate (2) in the two slot grooves (5) is adjustable, and the horizontal position of the precast hanging plate (2) in the slot groove (5) is limited by filling flexible gaskets (10) between the precast hanging plate (2) and the slot groove (5).

8. A construction method of a precast pipe pile supporting hanging plate according to claim 6, characterized in that: Multiple vertically arranged reinforcing bars (7) are fixed at the top of each precast hanging plate (2), and corresponding insertion holes for receiving the reinforcing bars (7) are provided at the bottom of each precast hanging plate (2), and the insertion holes correspond to the reinforcing bars (7) one by one; in S4, when the precast hanging plate (2) is sunk, all the reinforcing bars (7) of the lower precast hanging plate (2) are inserted into the corresponding insertion holes of the upper precast hanging plate (2).

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