Double-row PRC pile combined supporting structure and construction method

Abstract

The invention discloses a double-row PRC pile combined supporting structure and a construction method, the double-row PRC pile combined supporting structure comprises a front-row tray, a rear-row tray, a transverse rod, a vertical rod, an inclined rod, a plurality of front-row pipe piles and a plurality of rear-row pipe piles, the front-row pipe piles and the rear-row pipe piles are distributed at intervals, the rear-row pipe piles are distributed at intervals, and the front-row pipe piles and the rear-row pipe piles are in one-to-one correspondence; each front-row pipe pile is sleeved with a front-row tray, each rear-row pipe pile is sleeved with a rear-row tray, transverse rods are connected between every two adjacent front-row trays and between every two adjacent rear-row trays, vertical rods are connected between every two adjacent front-row trays and rear-row trays, and every two symmetrical transverse rods and every two symmetrical vertical rods form a rectangular face. The inclined rods are distributed on the diagonal lines of the rectangular face, and the two ends of each inclined rod are fixed to the front-row tray and the rear-row tray respectively. The method can save cost, is simple in process, shortens the construction period, and improves the supporting capability.

Description

Technical Field

[0001] This invention relates to the field of pipe pile support technology, specifically to a double-row PRC pile combined support structure and construction method. Background Technology

[0002] PRC pipe piles, due to their high bearing capacity, crack resistance, and durability, are commonly used in support projects such as deep foundation pit support, slope protection, bridge foundations, tunnel support, and dam support. PRC pipe piles are arranged in parallel to form a protected area within the work zone, preventing soil collapse around the work area. The traditional double-row PRC pipe pile support method involves arranging two rows of PRC pipe piles around the perimeter of the foundation pit, connected by a cast-in-place concrete connecting beam. The two rows of concrete piles and the soil between them form a lateral force resisting system to resist horizontal displacement of the soil outside the foundation pit. However, this traditional support structure only achieves a restraining effect when the piles are subjected to external loads such as lateral soil displacement, requiring relative displacement between the concrete piles for the front row to influence the movement of the rear row and provide sufficient rigidity. Furthermore, the use of cast-in-place concrete results in a long construction period, complex procedures, and non-recyclable materials, leading to significant material waste. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a double-row PRC pile combined support structure and construction method that can save costs, simplify procedures, shorten construction period, and improve support capacity.

[0004] This invention is achieved through the following technical solution: a double-row PRC pile combined support structure, including a front row tray, a rear row tray, horizontal bars, vertical bars, diagonal bars, front row pipe piles, and rear row pipe piles. Multiple front row pipe piles and multiple rear row pipe piles are respectively arranged, with the multiple front row pipe piles and multiple rear row pipe piles spaced apart, and each front row pipe pile and each rear row pipe pile corresponds to another. A front row tray is fitted onto each front row pipe pile, and a rear row tray is fitted onto each rear row pipe pile. A horizontal bar connects every two adjacent front row trays and every two adjacent rear row trays. A vertical bar connects every two adjacent front row trays and rear row trays. Every two symmetrical horizontal bars and every two symmetrical vertical bars form a rectangular surface. Diagonal bars are distributed along the diagonal of the rectangular surface, and both ends of the diagonal bars are fixed to the front row tray and the rear row tray, respectively.

[0005] Furthermore, the front tray and the rear tray are each provided with a plurality of connecting holes distributed along their circumference.

[0006] Furthermore, each of the horizontal bar, vertical bar, and diagonal bar has a snap-fit ​​groove at both ends. The opening size of the snap-fit ​​groove is adapted to the thickness of the front and rear trays. The upper and lower walls of the snap-fit ​​groove have corresponding fixing holes. When the horizontal bar, vertical bar, or diagonal bar is connected to the front or rear tray, the snap-fit ​​groove is snapped onto the front or rear tray, and the fixing holes and the connecting holes are fixed by a first bolt.

[0007] Furthermore: two symmetrical mounting plates are respectively provided at both ends of the horizontal bar, vertical bar, and diagonal bar. An inclined tensioning structure is provided between the two mounting plates. The inclined tensioning structure consists of an upper pull plate and a lower pull plate that are parallel to each other. The lower pull plate is fixed between the two mounting plates. The upper pull plate and the lower pull plate have the same structure, including an inclined section and a horizontal section respectively. The inclined sections of the upper pull plate and the lower pull plate are connected to each other by a second bolt. The second bolt is fitted with a positioning washer. When the horizontal bar, vertical bar, or diagonal bar is connected to the front tray or the rear tray, the front tray or the rear tray is clamped between the horizontal section of the upper pull plate and the horizontal section of the lower pull plate and fixed by a third bolt. The third bolt is fitted with a fixing washer.

[0008] Furthermore: the front and rear pallets have the same structure, consisting of a left pallet and a right pallet respectively. The left pallet is fixed to the outer wall of the left cylinder, and the right pallet is fixed to the outer wall of the right cylinder. The left and right cylinders are spliced ​​together to form a sleeve that is fitted onto the front or rear pipe pile. The outer wall of the left cylinder is provided with a left connecting plate distributed along its axial direction, and the outer wall of the right cylinder is provided with a right connecting plate distributed along its axial direction. The left and right connecting plates are fixed by a fourth bolt. The left pallet and the outer wall of the left cylinder, as well as the right pallet and the outer wall of the right cylinder, are fixed by welding.

[0009] Furthermore: the included angle between the inclined section and the horizontal section is an obtuse angle; the inclined section has an adjustment hole along its length; the second bolt is disposed in the adjustment hole to connect the inclined section of the upper pull plate and the inclined section of the lower pull plate to each other; the horizontal section has an installation hole along its length; the third bolt is disposed in the installation hole to fix the horizontal section of the upper pull plate and the horizontal section of the lower pull plate to the front or rear tray.

[0010] Furthermore, the crossbars, vertical bars, diagonal bars, front trays, and rear trays are all made of steel.

[0011] Furthermore, the bottom side of the inclined section of the upper pull plate, the top side of the horizontal section of the upper pull plate, the top side of the inclined section of the lower pull plate, and the bottom side of the horizontal section of the lower pull plate are respectively provided with arc surfaces, and the mounting plate is triangular.

[0012] Furthermore, the front row of pipe piles and the rear row of pipe piles are mixed-reinforced prestressed concrete pipe piles.

[0013] A construction method for a double-row PRC pile composite support structure includes the following steps: S1. Prefabricated front and rear pallets, horizontal bars, vertical bars, diagonal bars, front and rear pipe piles, mounting plates, top pull plates, and bottom pull plates; S2. Level the site, mark the axis and position of the double-row piles, and drill holes to form the front and rear rows of pile holes; S3. Drive the front row of pipe piles into the front row of pile holes, and drive the rear row of pipe piles into the rear row of pile holes to complete the construction of the front row of pipe piles and the rear row of pipe piles. S4. Install front trays on each front row of pipe piles and rear trays on each rear row of pipe piles; S5. Weld two symmetrical mounting plates to the ends of the horizontal bar, vertical bar, and diagonal bar respectively. Weld the inclined section of the pull-down plate between the two mounting plates. Then, use the second bolt to pass through the adjustment hole of the inclined section of the pull-up plate and the adjustment hole of the inclined section of the pull-down plate to connect the pull-up plate and the pull-down plate to each other. S6. Install crossbars between two adjacent front pallets and between two adjacent rear pallets, install vertical bars between two adjacent front and rear pallets, install diagonal bars between diagonally opposite front and rear pallets, and clip the front or rear pallet between the horizontal section of the upper pull plate and the horizontal section of the lower pull plate. Use a third bolt to pass through the mounting holes of the horizontal section and the connection holes of the front or rear pallet to connect the upper and lower pull plates with the front or rear pallets until the front and rear pipe piles are combined into a whole. S7. After installation, spot weld the positioning gasket and the fixing gasket. Compared with the prior art, the present invention has the following beneficial effects: 1. This invention connects the front and rear pipe piles, as well as the horizontal, vertical, and diagonal braces, into a whole by installing front trays on each front pipe pile and rear trays on each rear pipe pile. Finally, vertical bars are installed between adjacent front and rear trays, horizontal bars between adjacent front trays, horizontal bars between adjacent rear trays, and diagonal braces are installed. By using prefabricated front and rear trays, horizontal bars, vertical bars, and diagonal braces, on-site casting is eliminated, shortening the construction period, improving construction efficiency, and facilitating easy assembly and disassembly. Furthermore, the front and rear trays, horizontal bars, vertical bars, and diagonal braces can be recycled and reused, saving material costs.

[0014] 2. The horizontal, vertical, and diagonal bars are connected to the front or rear pallets respectively through the inclined tensioning structure. The inclined tensioning structure is under tension, generating clamping force as well as lateral and vertical forces. The lateral and vertical forces can work together to generate stress superposition in multiple directions, thereby forming prestress and increasing the overall pre-tensioning effect of the structure. Prestress can be formed without displacement of the front or rear pipe piles, thus improving the support capacity.

[0015] 3. By setting curved surfaces on the bottom side of the inclined section of the upper pull plate, the top side of the horizontal section of the upper pull plate, the top side of the inclined section of the lower pull plate, and the bottom side of the horizontal section of the lower pull plate, the curved surfaces of the inclined sections of the upper pull plate and the lower pull plate resist the tensile force relatively, thereby enhancing the torsional resistance.

[0016] 4. By opening adjustment holes distributed along the length of the inclined section and installation holes distributed along the length of the horizontal section, the spacing between the front row of pipe piles and the rear row of pipe piles, or between the front row of pipe piles and the front row of pipe piles, or between the rear row of pipe piles and the rear row of pipe piles, can be adjusted. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention. Figure 1 ; Figure 2 This is a structural schematic diagram of Embodiment 1 of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the crossbar structure according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the connection between the front row of pipe piles and the front row of trays in Embodiment 1 of the present invention; Figure 5 This is an exploded view of the sleeve structure in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the sleeve in Embodiment 2 of the present invention; Figure 7 This is a front view of the connection between the inclined tensioning structure, the crossbar, and the front tray in Embodiment 3 of the present invention; Figure 8 This is a schematic diagram of the connection between the inclined tensioning structure, the crossbar, and the front tray in Embodiment 3 of the present invention; Figure 9 This is a schematic diagram of the connection between the inclined tensioning structure and the crossbar in Embodiment 3 of the invention; Figure 10 This is a schematic diagram of the connection between the tilting tensioning structure and the front tray in Embodiment 3 of the invention.

[0018] Explanation of reference numerals in the attached drawings: 1-Front row tray, 2-Rear row tray, 3-Horizontal bar, 4-Vertical bar, 5-Diagonal bar, 6-Front row pipe pile, 7-Rear row pipe pile, 8-Connecting hole, 9-Snap-fit ​​groove, 10-Fixing hole, 11-First bolt, 12-Left disc body, 13-Right disc body, 14-Left cylinder body, 15-Right cylinder body, 16-Left connecting plate, 17-Right connecting plate, 18-Mounting plate, 19-Inclined tensioning structure, 20-Upper pull plate, 21-Lower pull plate, 22-Inclined section, 23-Horizontal section, 24-Second bolt, 25-Positioning washer, 26-Third bolt, 27-Fixing washer, 28-Adjusting hole, 29-Mounting hole, 30-Curved surface. Detailed Implementation

[0019] Example 1 Reference Figures 1 to 4 A double-row PRC pile combined support structure includes a front row tray 1, a rear row tray 2, horizontal bars 3, vertical bars 4, diagonal bars 5, a front row pipe pile 6, and a rear row pipe pile 7. Multiple front row pipe piles 6 and multiple rear row pipe piles 7 are respectively arranged, with the front row pipe piles 6 and rear row pipe piles 7 spaced apart, and each front row pipe pile 6 and rear row pipe pile 7 corresponding to another. A front row tray 1 is fitted onto each front row pipe pile 6, and a rear row tray 2 is fitted onto each rear row pipe pile 7. Horizontal bars 3 connect every two adjacent front row trays 1 and every two adjacent rear row trays 2. Vertical bars 4 connect every two adjacent front row trays 1 and rear row trays 2. Every two symmetrical horizontal bars 3 and every two symmetrical vertical bars 4 form a rectangular surface. Diagonal bars 5 are distributed on the diagonal of the rectangular surface, and the two ends of the diagonal bars 5 are fixed to the front row tray 1 and the rear row tray 2 respectively.

[0020] The front tray 1 and the rear tray 2 are each provided with a number of connecting holes 8 distributed along their circumference.

[0021] The two ends of the horizontal bar 3, vertical bar 4 and diagonal bar 5 are respectively provided with snap-fit ​​grooves 9. The opening size of the snap-fit ​​groove 9 is adapted to the thickness of the front tray 1 and the rear tray 2. The upper and lower groove walls of the snap-fit ​​groove 9 are provided with corresponding fixing holes 10. When the horizontal bar 3, vertical bar 4 or diagonal bar 5 is connected to the front tray 1 or the rear tray 2, the snap-fit ​​groove 9 is snapped on the front tray 1 or the rear tray 2, and the fixing holes 10 and the connecting holes 8 are fixed by the first bolt 11.

[0022] The horizontal bar 3, vertical bar 4, diagonal bar 5, front tray 1, and rear tray 2 are all made of steel.

[0023] The front row of pipe piles 6 and the rear row of pipe piles 7 are prestressed concrete pipe piles with mixed reinforcement.

[0024] In use, this invention involves first driving in the front row of pipe piles 6 and the rear row of pipe piles 7. Then, a front tray 1 is fitted onto each front row of pipe pile 6, and a rear tray 2 is fitted onto each rear row of pipe pile 7. Finally, vertical bars 4 are installed between adjacent front trays 1 and rear trays 2, horizontal bars 3 are installed between adjacent front trays 1, horizontal bars 3 are installed between adjacent rear trays 2, and diagonal bars 5 are installed. This connects the front row of pipe piles 6 and rear row of pipe piles 7, along with the horizontal bars 3, vertical bars 4, and diagonal bars 5, into a whole. This is achieved by using prefabricated front trays 1, rear trays 2, horizontal bars 3, and vertical bars 4. The diagonal brace 5 eliminates the need for on-site casting, shortening the construction period, improving construction efficiency, and facilitating easy assembly and disassembly with simple procedures. Furthermore, the front and rear pallets 1, rear pallets 2, horizontal bars 3, vertical bars 4, and diagonal brace 5 can be recycled and reused, saving material costs. Additionally, the front and rear pallets 1 and rear pallets 2 are fixed to the horizontal bars 3, vertical bars 4, and diagonal brace 5 by the first bolt 11. The bolt has strong tensile strength, and during installation, tightening the nuts subjects the bolts to tension, generating pre-tightening force through bolt stretching. Pre-stress can be formed without displacement of the front or rear pipe piles 6 or 7, enhancing support capacity.

[0025] Example 2 The difference between this embodiment and Embodiment 1 is that: Reference Figures 5 to 6 The front tray 1 and the rear tray 2 have the same structure, consisting of a left tray 12 and a right tray 13 respectively. The left tray 12 is fixed to the outer wall of the left cylinder 14, and the right tray 13 is fixed to the outer wall of the right cylinder 15. The left cylinder 14 and the right cylinder 15 are spliced ​​together to form a sleeve and are fitted onto the front pipe pile 6 or the rear pipe pile 7.

[0026] The outer wall of the left cylinder 14 is provided with a left connecting plate 16 distributed along its axial direction, and the outer wall of the right cylinder 15 is provided with a right connecting plate 17 distributed along its axial direction. The left connecting plate 16 and the right connecting plate 17 are fixed by a fourth bolt.

[0027] The outer walls of the left disc 12 and the left cylinder 14, as well as the outer walls of the right disc 13 and the right cylinder 15, are fixed by welding.

[0028] By dividing the front pallet 1 and the rear pallet 2 into two parts, the left pallet 12 and the right pallet 13, and welding the left pallet 12 to the outer wall of the left cylinder 14 and the right pallet 13 to the outer wall of the right cylinder 15, the left cylinder 14 and the right cylinder 15 are assembled into a sleeve and then fitted onto the front pipe pile 6 and the rear pipe pile 7. The left cylinder 14 and the right cylinder 15 are then connected and fixed by the fourth bolt, so that the front pallet 1 and the rear pallet 2 can accommodate piles of different diameters, thus improving applicability.

[0029] Example 3 The difference between this embodiment and Embodiment 1 is that: Reference Figures 7 to 10Two symmetrical mounting plates 18 are respectively provided at both ends of the horizontal bar 3, vertical bar 4 and diagonal bar 5. An inclined tensioning structure 19 is provided between the two mounting plates 18. The inclined tensioning structure 19 is composed of an upper pull plate 20 and a lower pull plate 21 that are parallel to each other. The lower pull plate 21 is fixed between the two mounting plates 18. The upper pull plate 20 and the lower pull plate 21 have the same structure, including an inclined section 22 and a horizontal section 23 respectively. The inclined section 22 of the upper pull plate 20 and the inclined section 22 of the lower pull plate 21 are connected to each other by a second bolt 24. The second bolt 24 is fitted with a positioning washer. When the horizontal bar 3, vertical bar 4 or diagonal bar 5 is connected to the front tray 1 or the rear tray 2, the front tray 1 or the rear tray 2 is clamped between the horizontal section 23 of the upper pull plate 20 and the horizontal section 23 of the lower pull plate 21 and fixed by a third bolt 26. The third bolt 26 is fitted with a fixing washer 27.

[0030] The included angle between the inclined section 22 and the horizontal section 23 is an obtuse angle. An adjustment hole is provided in the inclined section 22 along its length direction. A second bolt 24 is provided in the adjustment hole 28 to connect the inclined section 22 of the upper pull plate 20 and the inclined section 22 of the lower pull plate 21. An installation hole 29 is provided in the horizontal section 23 along its length direction. A third bolt 26 is provided in the installation hole 29 to fix the horizontal section 23 of the upper pull plate 20 and the horizontal section 23 of the lower pull plate 21 to the front tray 1 or the rear tray 2.

[0031] The bottom side of the inclined section 22 of the upper pull plate 20, the top side of the horizontal section 22 of the upper pull plate 20, the top side of the inclined section 22 of the lower pull plate 21, and the bottom side of the horizontal section 23 of the lower pull plate 21 are respectively provided with arc surfaces 30, and the mounting plate 18 is triangular.

[0032] A construction method for a double-row PRC pile composite support structure includes the following steps: S1. Prefabricated front and rear pallets, horizontal bars, vertical bars, diagonal bars, front and rear pipe piles, mounting plates, top pull plates, and bottom pull plates; S2. Level the site, mark the axis and position of the double-row piles, and drill holes to form the front and rear pile holes; S3. Drive the front row of pipe piles into the front row of pile holes, and drive the rear row of pipe piles into the rear row of pile holes to complete the construction of the front row of pipe piles and the rear row of pipe piles. S4. Install a front tray on each front row of pipe piles and a rear tray on each rear row of pipe piles; S5. Weld two symmetrical mounting plates to the ends of the horizontal bar, vertical bar, and diagonal bar respectively. Weld the inclined section of the pull-down plate between the two mounting plates. Then, use the second bolt to pass through the adjustment hole of the inclined section of the pull-up plate and the adjustment hole of the inclined section of the pull-down plate to connect the pull-up plate and the pull-down plate to each other. S6. Install crossbars between two adjacent front pallets and between two adjacent rear pallets, install vertical bars between two adjacent front and rear pallets, install diagonal bars between diagonally opposite front and rear pallets, and clip the front or rear pallet between the horizontal section of the upper pull plate and the horizontal section of the lower pull plate. Use a third bolt to pass through the mounting holes of the horizontal section and the connection holes of the front or rear pallet to connect the upper and lower pull plates with the front or rear pallets until the front and rear pipe piles are combined into a whole. S7. After installation, spot weld the positioning gasket and the fixing gasket.

[0033] Furthermore, spot welding the positioning and fixing gaskets can prevent displacement.

[0034] The above detailed description is a specific description of feasible embodiments of the present invention. These embodiments are not intended to limit the patent scope of the present invention. All equivalent implementations or modifications that do not depart from the present invention should be included in the patent scope of this case.

Claims

1. A double-row PRC pile combined support structure, characterized in that: The device includes a front tray, a rear tray, horizontal bars, vertical bars, diagonal bars, front pipe piles, and rear pipe piles. Multiple front and rear pipe piles are provided, spaced apart. Each front and rear pipe pile corresponds to a front tray, and each rear pipe pile is fitted with a rear tray. A horizontal bar connects every two adjacent front and rear trays, and a vertical bar connects every two adjacent front and rear trays. Two symmetrical horizontal bars and two symmetrical vertical bars form a rectangular surface. Diagonal bars are distributed along the diagonal of the rectangular surface, and both ends of the diagonal bars are fixed to the front and rear trays, respectively.

2. The double-row PRC pile combined support structure according to claim 1, characterized in that: The front tray and the rear tray are each provided with a plurality of connecting holes distributed along their circumference.

3. The double-row PRC pile combined support structure according to claim 2, characterized in that: The two ends of the horizontal bar, vertical bar, and diagonal bar are respectively provided with snap-fit ​​grooves. The opening size of the snap-fit ​​groove is adapted to the thickness of the front and rear trays. The upper and lower walls of the snap-fit ​​groove are provided with corresponding fixing holes. When the horizontal bar, vertical bar, or diagonal bar is connected to the front or rear tray, the snap-fit ​​groove is snapped onto the front or rear tray, and the fixing holes and the connecting holes are fixed by the first bolt.

4. The double-row PRC pile combined support structure according to claim 2, characterized in that: Two symmetrical mounting plates are respectively provided at both ends of the horizontal bar, vertical bar, and diagonal bar. An inclined tensioning structure is provided between the two mounting plates. The inclined tensioning structure consists of an upper pull plate and a lower pull plate that are parallel to each other. The lower pull plate is fixed between the two mounting plates. The upper pull plate and the lower pull plate have the same structure, including an inclined section and a horizontal section respectively. The inclined sections of the upper pull plate and the lower pull plate are connected to each other by a second bolt. The second bolt is fitted with a positioning washer. When the horizontal bar, vertical bar, or diagonal bar is connected to the front tray or the rear tray, the front tray or the rear tray is clamped between the horizontal section of the upper pull plate and the horizontal section of the lower pull plate and fixed by a third bolt. The third bolt is fitted with a fixing washer.

5. The double-row PRC pile combined support structure according to claim 3, characterized in that: The front and rear trays have the same structure, consisting of a left tray and a right tray, respectively. The left tray is fixed to the outer wall of the left cylinder, and the right tray is fixed to the outer wall of the right cylinder. The left and right cylinders are joined together to form a sleeve that fits onto the front or rear pipe piles. The outer wall of the left cylinder has a left connecting plate distributed along its axial direction, and the outer wall of the right cylinder has a right connecting plate distributed along its axial direction. The left and right connecting plates are fixed by a fourth bolt. The left tray and the outer wall of the left cylinder, as well as the right tray and the outer wall of the right cylinder, are fixed by welding.

6. The double-row PRC pile combined support structure according to claim 4, characterized in that: The angle between the inclined section and the horizontal section is an obtuse angle. An adjustment hole is formed in the inclined section along its length. The second bolt is disposed in the adjustment hole to connect the inclined section of the upper pull plate and the inclined section of the lower pull plate to each other. An installation hole is formed in the horizontal section along its length. The third bolt is disposed in the installation hole to fix the horizontal section of the upper pull plate and the horizontal section of the lower pull plate to the front or rear tray.

7. The double-row PRC pile combined support structure according to claim 5, characterized in that: The horizontal bars, vertical bars, diagonal bars, front trays, and rear trays are all made of steel.

8. The double-row PRC pile combined support structure according to claim 6, characterized in that: The bottom side of the inclined section of the upper pull plate, the top side of the horizontal section of the upper pull plate, the top side of the inclined section of the lower pull plate, and the bottom side of the horizontal section of the lower pull plate are respectively provided with arc surfaces, and the mounting plate is triangular.

9. The double-row PRC pile combined support structure according to claim 7, characterized in that: The front row of pipe piles and the rear row of pipe piles are mixed-reinforced prestressed concrete pipe piles.

10. A construction method for a double-row PRC pile composite support structure, characterized in that: Includes the following steps, S1. Prefabricated front and rear pallets, horizontal bars, vertical bars, diagonal bars, front and rear pipe piles, mounting plates, top pull plates, and bottom pull plates; S2. Level the site, mark the axis and position of the double-row piles, and drill holes to form the front and rear rows of pile holes; S3. Drive the front row of pipe piles into the front row of pile holes, and drive the rear row of pipe piles into the rear row of pile holes to complete the construction of the front row of pipe piles and the rear row of pipe piles. S4. Install a front tray on each front row of pipe piles and a rear tray on each rear row of pipe piles; S5. Weld two symmetrical mounting plates to the ends of the horizontal bar, vertical bar, and diagonal bar respectively. Weld the inclined section of the pull-down plate between the two mounting plates. Then, use the second bolt to pass through the adjustment hole of the inclined section of the pull-up plate and the adjustment hole of the inclined section of the pull-down plate to connect the pull-up plate and the pull-down plate to each other. S6. Install crossbars between two adjacent front pallets and between two adjacent rear pallets, install vertical bars between two adjacent front and rear pallets, install diagonal bars between diagonally opposite front and rear pallets, and clip the front or rear pallet between the horizontal section of the upper pull plate and the horizontal section of the lower pull plate. Use a third bolt to pass through the mounting holes of the horizontal section and the connection holes of the front or rear pallet to connect the upper and lower pull plates with the front or rear pallets until the front and rear pipe piles are combined into a whole. S7. After installation, spot weld the positioning gasket and the fixing gasket.

Images