Continuous artificial hand hole pile step retaining wall structure and construction method thereof

Abstract

The application discloses a continuous artificial hand-dug pile step retaining wall structure and a construction method thereof, which comprises a side formwork, a bottom formwork and a supporting rod, the side formwork and the bottom formwork are sleeved on the supporting rod, and the bottom formwork abuts against the side formwork; the side formwork comprises a plurality of curved panels and a plurality of splicing panels, each splicing panel is detachably installed between two adjacent curved panels, and each splicing panel is provided with a first connecting assembly for connecting or separating from two adjacent curved panels; the bottom formwork comprises a plurality of arc-shaped panels and a plurality of lengthened panels, each lengthened panel is detachably installed between two adjacent arc-shaped panels, and each lengthened panel is provided with a second connecting assembly for connecting or separating from two adjacent arc-shaped panels; and the supporting rod is provided with a first telescopic assembly and a second telescopic assembly for driving the curved panels and the arc-shaped panels to telescopically extend, respectively. The application has the effect of improving the construction efficiency of the retaining wall.

Description

Technical Field

[0001] This invention relates to the field of retaining walls for manually excavated bored piles, and in particular to a continuous manually excavated bored pile stepped retaining wall structure and its construction method. Background Technology

[0002] Currently, manually excavated bored piles are increasingly widely used in the construction of bridges, highways, and other projects. These piles do not require large machinery and offer advantages such as ease of construction and speed. During construction, it is typically necessary to pour a retaining wall to prevent pile collapse, ensuring the safety of construction workers and the smooth progress of the project.

[0003] The existing method for constructing bored piles involves using a conical template with a smaller upper end and a larger lower end to pour a continuous stepped retaining wall inside the bored pile using a reverse construction method: after excavating a bored pile to a certain depth, the retaining wall template is placed and the retaining wall is poured. Once the retaining wall is stable, the retaining wall template is removed and hoisted outside the bored pile. Then, a bored pile to a certain depth is excavated, and the retaining wall template is hoisted back into the bored pile and assembled for pouring the next section of the retaining wall. This process is repeated to complete the retaining wall construction of the entire bored pile.

[0004] Regarding the aforementioned technologies, since the templates used are conical tubes with small upper ends and large lower ends, they need to be disassembled piece by piece during hoisting and then reassembled when in use. The frequent disassembly and reassembly of the templates is time-consuming and inefficient, thus reducing the construction efficiency of the retaining wall. Summary of the Invention

[0005] To improve the construction efficiency of retaining walls, this application provides a continuous manually excavated pile stepped retaining wall structure and its construction method.

[0006] Firstly, this application provides a continuous manually excavated bored pile stepped retaining wall structure, which adopts the following technical solution:

[0007] A continuous manually excavated pile stepped retaining wall structure includes side templates, a bottom template, and support rods. The side templates are conical cylindrical, and the bottom templates are annular. Both the side templates and the bottom templates are fitted onto the support rods, with the bottom template abutting against the bottom of the side templates. The side templates include several curved panels and several splicing panels. Each splicing panel is detachably installed between two adjacent curved panels to form the side template. Each splicing panel is provided with a first connecting component for connecting or detaching from two adjacent curved panels. The bottom template includes several arc-shaped plates and several extension plates. Each extension plate is detachably installed between two adjacent arc-shaped plates to form the bottom template. Each extension plate is provided with a second connecting component for connecting or detaching from two adjacent arc-shaped plates. The support rods are provided with a first telescopic component and a second telescopic component for driving the curved panels and arc-shaped plates to extend or retract away from or towards the support rods, respectively.

[0008] By adopting the above technical solution, the first telescopic component is driven to extend each curved panel, and the first connecting component is activated to install the splicing plate between two adjacent curved panels, thereby forming a conical cylindrical side template with a small upper end and a large lower end; the second telescopic component is driven to extend each arc-shaped plate, and the second connecting component is activated to install the extension plate between two adjacent arc-shaped plates to form a bottom template; the side template abuts against the bottom template, thereby forming a concrete pouring area on the inner wall of the side template, bottom template, and bored pile, and the concrete poured in the pouring area forms a retaining wall with an inverted trapezoidal cross-section; after one section of retaining wall is completed, the first connecting component is activated. The splicing plate is removed, and the first telescopic component is driven to retract the curved panel; the second connecting component is driven to remove the extension plate, and the second telescopic component is driven to retract the arc plate; thus, the retaining wall template structure is retracted, facilitating hoisting within the bored pile; both the curved panel and the arc plate are telescopic, improving the convenience and smoothness of hoisting the retaining wall structure template; moreover, the retaining wall structure template does not need to be disassembled into individual templates for assembly, the curved panel and arc plate are fixed and can be used directly, only the splicing plate and extension plate need to be installed and disassembled, greatly improving the template assembly efficiency, thereby effectively improving the construction efficiency of the retaining wall.

[0009] Preferably, the first connecting assembly includes a lifting rod, two plug-in plates, and two connecting rods. The splicing plate has a first mounting groove, and the lifting rod is slidably mounted on the splicing plate through the first mounting groove. The two sides of the splicing plate have first sliding grooves, and the two plug-in plates are slidably mounted on the splicing plate. The splicing plate has a hinge groove, which connects the first mounting groove and the two first sliding grooves. The two connecting rods are mounted on the splicing plate through the hinge groove, with one end of each connecting rod hinged to the lifting rod and the other end hinged to the plug-in plate. The two curved panels adjacent to the splicing plate and corresponding to the positions of the first sliding grooves each have plug-in grooves for the plug-in plates to be inserted. The assembly also includes a first driving member for driving the lifting rod to move.

[0010] By adopting the above technical solution, activating the first connecting assembly causes the lifting rod to move downwards along the inclined direction of the splicing plate. The lifting rod drives the ends of the two connecting rods away from the lifting rod to move in a direction away from each other, thereby causing the two connecting rods to move the two insertion plates to the two insertion slots of the two adjacent curved panels, thus achieving the splicing of the splicing plate and the curved panel. Activating the first connecting assembly causes the lifting rod to move upwards along the inclined direction of the splicing plate. The lifting rod drives the ends of the two connecting rods away from the lifting rod to move in a direction closer to each other, thereby causing the two connecting rods to move the two insertion plates to disengage from the two insertion slots of the two adjacent curved panels, thus achieving the disassembly of the splicing plate and the curved panel. This structure is simple to assemble, has high working efficiency, and can achieve stable splicing and disassembly of the splicing plate and the curved panel.

[0011] Preferably, the first driving component includes a first driving cylinder fixedly installed on the splicing plate, and the piston rod of the first driving cylinder is fixed to the lifting rod.

[0012] By adopting the above technical solution, the first drive cylinder is driven to move the lifting rod up and down along the inclined direction of the splicing plate, thereby realizing the connection or separation of the splicing plate from the curved panel; moreover, the first drive cylinder is small in size, saving space, and is simple to assemble and convenient to use.

[0013] Preferably, the second connecting assembly includes a slider, two locking rods, and two locking plates. The extension plate has a second mounting groove, and the slider is slidably mounted on the extension plate through the second mounting groove. The slider has an inclined surface. The extension plate has second sliding grooves on both sides of the second mounting groove, and the two locking rods are slidably mounted on the extension plate through the second sliding grooves. The extension plate has a first sliding groove on the side of the second sliding groove away from the second mounting groove, and each locking plate is slidably mounted on the extension plate through the first sliding groove. The locking plate is fixed to the locking rod. The two arc-shaped plates adjacent to the extension plate and corresponding to the positions of the first sliding grooves each have locking grooves for the locking plates to engage. The assembly also includes a second driving member for driving the slider to move and a reset member for driving the locking plates to reset.

[0014] By adopting the above technical solution, the second driving component is driven to move the slider away from the support rod. The inclined surface of the slider drives the two locking rods to move, and the two locking rods respectively drive the two locking plates to the two locking slots of the two adjacent arc plates, thereby completing the connection between the extension plate and the two adjacent arc plates. When it is necessary to remove the extension plate, the second driving component is driven to move the slider closer to the support rod, and through the resetting action of the reset component, the locking rods drive the locking plates to move to the extension plate and disengage from the arc plates, so that the extension plate can be removed. This structure is simple to set up, realizes a stable connection between the extension plate and the two adjacent arc plates, and drives the second driving component to realize the disengagement and connection between the extension plate and the two adjacent arc plates. It is easy to operate and has good practicality.

[0015] Preferably, the reset component includes two blocking rings and two elastic members. The extension plate has a second sliding groove on the side wall of the second sliding groove. The blocking ring is slidably installed on the extension plate through the second sliding groove and is sleeved on the locking rod. The two elastic members are respectively sleeved on the two locking rods. Each elastic member is located on the side of the blocking ring away from the slider. One end of each elastic member abuts against the blocking ring and the other end abuts against the extension plate.

[0016] By adopting the above technical solution, when the two snap-fit ​​plates move to the two snap-fit ​​slots of the two adjacent arc plates and complete the connection between the extension plate and the two adjacent arc plates, the elastic element is compressed; when the elastic element resets, the snap-fit ​​rod drives the snap-fit ​​plate to move to the extension plate and disengage from the arc plate through the reset action of the elastic element, so that the extension plate can be removed; the structure is simple to set up, easy to operate, and can realize the automatic disengagement of the snap-fit ​​plate from the two adjacent arc plates.

[0017] Preferably, the second driving component is a second driving cylinder fixedly installed on the extension plate, and the piston rod of the second driving cylinder is fixed to the slider.

[0018] By adopting the above technical solution, the piston rod of the second driving cylinder is fixed to the slider, and the second driving cylinder is driven to move the slider, so as to realize that the snap-fit ​​plate snaps into or disengages from the two adjacent arc plates. The structure is reasonably designed and the second driving cylinder has good stability, thus enabling the slider to move stably.

[0019] Preferably, the first telescopic component includes a plurality of first cylinders, the plurality of first cylinders being fixed circumferentially to the support rod, the plurality of first cylinders being arranged in a one-to-one correspondence with the curved panel, and the piston rod of each first cylinder being fixedly connected to the curved panel.

[0020] By adopting the above technical solution, the piston rod is pushed by the first cylinder, which causes the piston rod to move each curved panel away from the support rod to extend, or causes the piston rod to move each curved panel towards the support rod to retract. The first cylinder has a simple and reasonable structure, is easier to assemble, and is easier to operate, thus automating the extension and retraction of the curved panels and improving the speed of the extension and retraction of the curved panels.

[0021] Preferably, the second telescopic component includes a plurality of second cylinders, which are located below the first cylinder. The plurality of second cylinders are fixed circumferentially to the support rod, and the plurality of second cylinders are arranged in a one-to-one correspondence with the arc-shaped plate. The piston rod of each second cylinder is fixedly connected to the arc-shaped plate.

[0022] By adopting the above technical solution, the piston rod of the second cylinder is fixed to the arc-shaped plate, thereby driving the second cylinder to push the piston rod, causing the piston rod to move each arc-shaped plate away from the support rod to extend, or causing the piston rod to move each arc-shaped plate closer to the support rod to retract. This structure is compact and has good performance, making the extension and retraction of the arc-shaped plates simpler and more convenient.

[0023] Preferably, each of the splicing plates and each of the extension plates is equipped with a hanging ring, and the support rod is provided with a hanging rope.

[0024] By adopting the above technical solution, the disassembled splicing panels and extension panels are connected by hanging ropes, eliminating the need to hoist the fixed templates and disassembled templates in batches. This allows the disassembled splicing panels and curved panels to be hoisted together with the curved panels and curved plates, thus saving hoisting time.

[0025] Secondly, the construction method for a continuous manually excavated bored pile stepped retaining wall structure provided in this application adopts the following technical solution:

[0026] A construction method for a continuous manually excavated bored pile stepped retaining wall structure, based on the continuous manually excavated bored pile stepped retaining wall structure, the method comprising:

[0027] Step 1: Excavate a bored pile to a certain depth, and then hoist the retaining wall formwork structure into the bored pile;

[0028] Step 2: Drive the first telescopic component to extend the curved panel, insert the splicing plate between two adjacent curved panels, and activate the first connecting component to install the splicing plate between the two adjacent curved panels to form the side template;

[0029] Step 3: Drive the second telescopic component to extend the arc-shaped plate, insert the extension plate between two adjacent arc-shaped plates, and activate the second connecting component to install the extension plate between the two adjacent arc-shaped plates to form the bottom template;

[0030] Step 4: Pour concrete into the space enclosed by the side formwork, the bottom formwork, and the inner wall of the pile hole to complete a section of the retaining wall with an inverted trapezoidal cross-section;

[0031] Step 5: After the protective wall is stabilized, activate the first connecting component and the second connecting component to disassemble the splicing plate and the extension plate respectively; and drive the first telescopic component and the second telescopic component to retract the curved panel and the arc-shaped plate respectively;

[0032] Step Six: Use the hanging rope to pass through the hanging ring to connect the disassembled curved panel and the arc-shaped plate;

[0033] Step 7: Hoist the retaining wall formwork structure outside the bored pile;

[0034] Step 8: Continue to excavate bored piles to a certain depth, repeating steps 2 to 7 to complete the construction of multiple retaining walls.

[0035] By adopting the above technical solution, the retaining wall template is hoisted into the bored pile. The first telescopic component is driven to extend the curved panels and distribute them around the inner wall of the bored pile. The first connecting component is driven to install the splicing plate between two adjacent curved panels to form a conical side template. Then, the second telescopic component is driven to extend the arc plate to abut against the curved panel, and the second connecting component is driven to install the extension plate between adjacent curved panels, thus forming a complete bottom template. Concrete is then poured in the space formed by the bottom template, side template, and inner wall of the bored pile to form a retaining wall with an inverted trapezoidal cross-section. When it is necessary to hoist the retaining wall template outside the bored pile, the first and second connecting components are activated to remove the splicing plate and extension plate. Then, the first and second telescopic components are driven to retract the curved panels and arc plate. The retaining wall template can extend and retract, effectively ensuring the smooth hoisting of the template inside the bored pile. Moreover, it is not necessary to completely disassemble the template, which improves the installation and disassembly efficiency of the template and greatly improves the construction efficiency of the retaining wall.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. The first telescopic component extends each curved panel, and the first connecting component installs the splicing plate between two adjacent curved panels to form a side template. The second telescopic component extends each arc-shaped plate, and the second connecting component installs the extension plate between two adjacent arc-shaped plates to form a bottom template. After the retaining wall construction is completed, the first and second connecting components are activated to remove the splicing plate and the extension plate. The first and second telescopic components are then activated to retract the curved panels and arc-shaped plates, improving the convenience and smoothness of hoisting the retaining wall structure template. This structure only requires the installation and disassembly of the splicing plate and the extension plate, greatly improving the template assembly efficiency and thus effectively improving the construction efficiency of the retaining wall.

[0038] 2. Activating the first connecting assembly causes the lifting rod to move downwards along the inclined direction of the splicing panel. The lifting rod drives the ends of the two connecting rods away from the lifting rod to move away from each other, thereby causing the two connecting rods to move the two insertion plates to the two insertion slots of the two adjacent curved panels, thus achieving splicing of the splicing panel and the curved panel. Activating the first connecting assembly causes the lifting rod to move upwards along the inclined direction of the splicing panel. The lifting rod drives the ends of the two connecting rods away from the lifting rod to move closer to each other, thereby causing the two connecting rods to move the two insertion plates to disengage from the two insertion slots of the two adjacent curved panels, thus achieving disassembly of the splicing panel and the curved panel. This structure is simple to assemble, has high working efficiency, and can achieve stable splicing and disassembly of the splicing panel and the curved panel.

[0039] 3. The first drive cylinder is driven to move the lifting rod up and down along the inclined direction of the splicing plate, thereby connecting or detaching the splicing plate from the curved panel; and the first drive cylinder is small in size, saving space, and is simple to assemble and convenient to use. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the continuous manually excavated pile step retaining wall structure according to an embodiment of this application.

[0041] Figure 2 This is a schematic diagram showing the connection of the side formwork, bottom formwork, and support rods of the continuous manually excavated pile step retaining wall structure according to an embodiment of this application.

[0042] Figure 3 This is a structural cross-sectional view of the first connecting component of the continuous manually excavated pile step retaining wall structure according to an embodiment of this application.

[0043] Figure 4 yes Figure 3 A magnified view of A in the middle.

[0044] Figure 5 This is a schematic diagram showing the connection between the bottom template and the second telescopic component of the continuous manually excavated pile step retaining wall structure according to an embodiment of this application.

[0045] Figure 6 This is a structural cross-sectional view of the arc-shaped plate, the extension plate, the first telescopic component, and the first connecting component of the continuous manually excavated pile step retaining wall structure according to an embodiment of this application.

[0046] Figure 7 yes Figure 6 A magnified view of B in the middle.

[0047] Figure 8 This is a flowchart of the construction method for the continuous manually excavated bored pile stepped retaining wall structure according to an embodiment of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 101. Wall retaining structure; 1. Support rod; 2. Side template; 21. Curved panel; 211. Insertion groove; 22. Splicing plate; 221. First mounting groove; 222. First sliding groove; 223. Hinge groove; 3. Bottom template; 31. Arc plate; 311. Snap-fit ​​groove; 32. Extension plate; 321. Second mounting groove; 322. Second sliding groove; 323. First sliding groove; 324. Second sliding groove; 4. First connecting assembly; 41. Lifting rod; 42 43. Connecting rod; 44. First driving component; 441. First driving cylinder; 5. Second connecting assembly; 51. Slider; 511. Inclined surface; 52. Locking rod; 53. Locking plate; 54. Reset component; 541. Barrier ring; 542. Elastic component; 55. Second driving component; 551. Second driving cylinder; 6. First telescopic assembly; 61. First cylinder; 7. Second telescopic assembly; 71. Second cylinder; 8. Hanging rope; 9. Hanging ring. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0051] This application discloses a stepped retaining wall structure for a continuous manually excavated bored pile. (Refer to...) Figure 1 and Figure 2A continuous manually excavated pile step retaining wall structure includes side templates 2, bottom templates 3, and support rods 1. Both side templates 2 and bottom templates 3 are fitted onto the support rods 1. The side templates 2 are conical in shape, with their inner diameter gradually increasing from top to bottom. The side templates 2 include several curved panels 21 and several splicing plates 22. The curved panels 21 are symmetrically distributed, and the splicing plates 22 are detachably installed between adjacent curved panels 21. Each splicing plate 22 is equipped with a first connecting component 4 for connecting or disconnecting from two adjacent curved panels 21, enabling a detachable connection between the splicing plate 22 and the two adjacent curved panels 21. The bottom template 3 abuts against the bottom of the side templates 2. The bottom template 3 is annular in shape and includes several extension plates. The extension plate 32 is detachably installed between two adjacent arc plates 31 and several arc plates 31. The extension plate 32 is equipped with a second connecting component 5 for connecting or disconnecting from the two adjacent arc plates 31, thereby realizing the installation and disassembly of the extension plate 32. Hooks are installed on the side of the extension plate 32 and the side of the splicing plate 22, and a hanging rope 8 is installed on the support rod 1 to realize the serial connection and disassembly of the extension plate 32 and the splicing plate 22. The support rod 1 is also equipped with a first telescopic component 6 and a second telescopic component 7 for driving the curved plate 21 and the arc plate 31 to extend or retract away from or towards the support rod 1, thereby realizing the shrinkage of the retaining wall structure template, making the hoisting of the retaining wall structure template smoother and the installation and use more convenient.

[0052] Reference Figure 2 , Figure 3 and Figure 4The first connecting component 4 includes a lifting rod 41, two insertion plates 42, and two connecting rods 43. The splicing plate 22 has a first mounting groove 221. The lifting rod 41 is slidably mounted on the splicing plate 22 through the first mounting groove 221, and the sliding direction of the lifting rod 41 is the direction of inclination of the splicing plate. Two curved panels 21 adjacent to the splicing plate 22 each have insertion grooves 211 corresponding to the positions of the first sliding grooves 222, for inserting the insertion plates 42. First sliding grooves 222 are formed on both sides of the splicing plate 22. Two insertion plates 42 are slidably mounted on the splicing plate 22 through the two first sliding grooves 222. The sliding direction of the two insertion plates 42 is perpendicular to the sliding direction of the lifting rod 41, and the sliding directions of the two insertion plates 42 are opposite. The splicing plate 22 has a first mounting groove 221. A hinge groove 223 is provided between the first mounting groove 221 and the two first sliding grooves 222. The hinge groove 223 communicates with the first mounting groove 221 and the two first sliding grooves 222. Both connecting rods 43 are located in the hinge groove 223. One end of each connecting rod 43 is hinged to the plug plate 42 and the other end is hinged to the lifting rod 41. It also includes a first driving member 44 for driving the lifting rod 41 to move. The first driving member 44 is a first driving cylinder 441. The first driving cylinder 441 is fixedly installed on the splicing plate 22. By driving the first driving cylinder 441, through the transmission of the two connecting rods 43, the two plug plates 42 can be inserted into the two adjacent curved panels 21, or the two plug plates 42 can be detached from the two curved panels 21, thereby realizing the detachment and connection of the splicing plate 22 with the two adjacent curved panels 21.

[0053] Reference Figure 5 , Figure 6 and Figure 7The second connecting component 5 includes a slider 51, two locking rods 52, and two locking plates 53. The extension plate 32 has a second mounting groove 321 located on the side of the extension plate 32 near the inner arc surface. The slider 51 is slidably mounted on the extension plate 32 through the second mounting groove 321, with the sliding direction of the slider 51 being horizontal, either closer to or further away from the support rod 1. The extension plate 32 has second sliding grooves 322 on both sides of the second mounting groove 321, communicating with the second mounting groove 321. The two locking rods 52 are slidably mounted on the extension plate 32 through the two second sliding grooves 322, with the sliding direction of the two locking rods 52 being closer to or further away from the slider 51, and the sliding directions of the two locking rods 52 being opposite. The slider 51 has inclined surfaces 511 on both sides facing the two locking rods 52, which... The two locking rods 52 slide towards or away from each other; the extension plate 32 has two first sliding grooves 323, which are located on the side of the second sliding groove 322 away from the second mounting groove 321. The two locking plates 53 are slidably installed on the extension plate 32 through the first sliding grooves 323. The locking rods 52 and the locking plates 53 correspond one-to-one, and the locking plates 53 are fixed to the end of the locking rods 52 away from the slider 51; the two arc-shaped plates 31 adjacent to the extension plate and corresponding to the positions of the first sliding grooves 323 are each provided with locking grooves 311 for locking the locking plates 53. The locking rods 52 drive the locking plates 53 to lock or disengage from the locking grooves 311, realizing the assembly or disassembly of the splicing plate 22 with the two adjacent curved plates 21; it also includes a second driving member 55 for driving the slider 51 to move and a reset member 54 for driving the locking plates 53 to reset.

[0054] The reset component 54 includes two blocking rings 541 and two elastic components 542. The extension plate 32 has a second sliding groove 324 on the side wall of the second sliding groove 322. Each blocking ring 541 is slidably installed on the extension plate 32 through the second sliding groove 324. The blocking ring 541 is sleeved on the locking rod 52. The elastic component 542 is a spring. Each spring is sleeved on the locking rod 52. Each spring is located on the side of the blocking ring 541 away from the slider 51. One end of the spring abuts against the blocking ring 541 and the other end abuts against the extension plate 542. The extension plate 32, through the spring reset, drives the two locking rods 52 to move towards the slider 51, so that the locking plate 53 can disengage from the two adjacent curved panel 21; the second driving member 55 includes a second driving cylinder 551, which is fixedly installed on the extension plate 32, and drives the slider 51 to move through the inclined surface 511 of the slider 51, thereby driving the two locking rods 52 to move, and the locking rods 52 drive the locking plate 53 to engage or disengage from the two adjacent curved panel 21.

[0055] Reference Figure 1 and Figure 2The first telescopic component 6 includes a plurality of first cylinders 61, which are distributed circumferentially along the support rod 1. Each first cylinder 61 is fixed to the support rod 1, and each first cylinder 61 is correspondingly arranged with each curved panel 21. The piston rod of each first cylinder 61 is fixedly connected to each curved panel 21, thereby driving the first cylinder 61 to extend and retract each curved panel 21 in a direction away from or close to the support rod 1.

[0056] The second telescopic assembly 7 includes several second cylinders 71, which are located below the first cylinder 61. The second cylinders 71 are fixed circumferentially to the support rod 1, and each second cylinder 71 is correspondingly arranged with an arc-shaped plate 31. The piston rod of each second cylinder 71 is fixedly connected to the arc-shaped plate 31. Driving the second cylinders 71 causes the arc-shaped plate 31 to extend away from the support rod 1, so that the arc-shaped plate 31 surrounds and adheres to the inner wall of the bored pile to become part of the bottom template 3. Driving the second cylinders 71 causes the arc-shaped plate 31 to retract towards the support rod 1, which facilitates the hoisting of the template.

[0057] The implementation principle of a continuous manually excavated pile step retaining wall structure in this application embodiment is as follows: When it is necessary to assemble and use templates, the second cylinder 71 is driven to move the arc plate 31 away from the support rod 1 and extend it; then the second driving cylinder 551 is driven to move the slider 51 towards the support rod 1, and the inclined surface 511 drives the two locking rods 52 to move. The locking plate 53 moves with the locking rods 52 and locks onto the two adjacent arc plates 31, completing the locking of the extended plate 32 with the two adjacent arc plates 31; at the same time, the first cylinder 61 is driven to extend the curved panel 21 away from the support rod 1, and the first driving cylinder 441 is driven to move the lifting rod 41 downward in the inclined direction of the splicing plate 22. Through the driving of the two connecting rods 43, the two plug-in plates 42 move and lock onto the two adjacent curved panels 21, thereby completing the splicing of the side template 2 and the bottom template 3;

[0058] When the template needs to be disassembled and hoisted, the second drive cylinder 551 is driven to move the slider 51 away from the support rod 1, and the spring reset pushes the two locking rods 52 to move closer to the slider 51. The locking rods 52 drive the locking plate 53 to disengage from the two adjacent arc plates 31. Then, the second cylinder 71 is driven to move the arc plate 31 closer to the support rod 1 and retract it. At the same time, the first drive cylinder 441 is driven to move the lifting rod 41 in the inclined direction of the splicing plate 22. Driven by the two connecting rods 43, the two plug plates 42 move closer to each other, so that the splicing plate 22 disengages from the connection with the two adjacent curved panels 21. Then, the first cylinder 61 is driven to retract the curved panel 21 closer to the support rod 1, thereby completing the retraction of the protective wall structure template. Then, the hanging rope 8 is passed through the disassembled extension plate 32 and the hanging ring 9 of the splicing plate 22 and tied tightly, and then hoisted together with the protective wall structure template.

[0059] This application also discloses a construction method for a continuous manually excavated bored pile stepped retaining wall structure. (Refer to...) Figure 8 The construction methods for continuous manually excavated bored pile stepped retaining wall structures include:

[0060] S10: Excavate a bored pile to a certain depth, and hoist the formwork of the retaining wall structure into the bored pile;

[0061] S20: Drive the first telescopic component 6 to extend the curved panel 21 and surround the inner wall of the pile hole, insert the splicing plate 22 between two adjacent curved panels 21, and activate the first connecting component 4 to install the splicing plate 22 between two adjacent curved panels 21, thereby splicing to form a conical side template 2 with a small upper port and a large lower port.

[0062] S30: Drive the second telescopic component 7 to extend the arc plate 31 and surround the inner wall of the pile hole, insert the extension plate 32 between two adjacent arc plates 31, and activate the second connecting component 5 to install the extension plate 32 between two adjacent arc plates 31, thereby splicing together to form a circular bottom template 3.

[0063] S40: Pour concrete into the space enclosed by the side formwork 2, the bottom formwork 3 and the inner wall of the pile hole to complete a section of retaining wall 101 with an inverted trapezoidal cross section;

[0064] S50: After the retaining wall 101 is stabilized, the first connecting component 4 and the second connecting component 5 are activated to disassemble the splicing plate 22 and the extension plate 32 respectively; and the first telescopic component 6 and the second telescopic component 7 are driven to retract the curved panel 21 and the arc-shaped plate 31 respectively.

[0065] S60: Use the hanging rope 8 to pass through the hanging ring 9 to connect the detached curved panel 21 and the arc panel 31;

[0066] S70: Hoist the retaining wall structure formwork outside the bored pile;

[0067] S80: Continue to excavate bored piles to a certain depth, repeat steps two to seven, and complete the construction of the multi-section retaining wall 101.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A continuous manually excavated pile step retaining wall structure, comprising side formwork (2), bottom formwork (3), and support rods (1), characterized in that, The side template (2) is a conical cylinder with a small upper end and a large lower end, and the bottom template (3) is annular. Both the side template (2) and the bottom template (3) are fitted onto the support rod (1), and the bottom template (3) abuts against the bottom of the side template (2). The side template (2) includes several curved panels (21) and several splicing panels (22). Each splicing panel (22) is detachably installed between two adjacent curved panels (21) to form the side template (2). Each splicing panel (22) is provided with a first connection for connecting or disconnecting from two adjacent curved panels (21). The bottom template (3) includes several arc-shaped plates (31) and several extension plates (32). Each extension plate (32) is detachably installed between two adjacent arc-shaped plates (31) to form the bottom template (3). Each extension plate (32) is provided with a second connecting component (5) for connecting or disconnecting from two adjacent arc-shaped plates (31). The support rod (1) is provided with a first telescopic component (6) and a second telescopic component (7) for driving the curved panel (21) and the arc-shaped plate (31) to extend or retract in a direction away from or close to the support rod (1). The first connecting assembly (4) includes a lifting rod (41), two plug-in plates (42), and two connecting rods (43). The splicing plate (22) has a first mounting groove (221), and the lifting rod (41) is slidably mounted on the splicing plate (22) through the first mounting groove (221). The splicing plate (22) has first sliding grooves (222) on both sides, and the two plug-in plates (42) are slidably mounted on the splicing plate (22). The splicing plate (22) has a hinge groove (223), and the hinge groove (223) communicates with the first mounting rod (43). The system includes a groove (221) and two first sliding grooves (222), two connecting rods (43) are mounted on the splicing plate (22) through the hinge grooves (223), one end of each connecting rod (43) is hinged to the lifting rod (41) and the other end is hinged to the plug plate (42); two curved panels (21) adjacent to the splicing plate (22) are provided with plug grooves (211) for the plug plate (42) to be inserted at positions corresponding to the first sliding grooves (222); it also includes a first driving member (44) for driving the lifting rod (41) to move; The first driving component (44) includes a first driving cylinder (441) fixedly installed on the splicing plate (22), and the piston rod of the first driving cylinder (441) is fixed to the lifting rod (41); The second connecting assembly (5) includes a slider (51), two locking rods (52), and two locking plates (53). The extension plate (32) has a second mounting groove (321), and the slider (51) is slidably mounted on the extension plate (32) through the second mounting groove (321). The slider (51) is provided with an inclined surface (511). The extension plate (32) has second sliding grooves (322) on both sides of the second mounting groove (321), and the two locking rods (52) are slidably mounted on the extension plate (32) through the second sliding grooves (322). The extension plate (32) is located in the second sliding groove. (322) A first sliding groove (323) is provided on the side away from the second mounting groove (321). Each of the snap-fit ​​plates (53) is slidably installed on the extension plate (32) through the first sliding groove (323). The snap-fit ​​plate (53) is fixed to the snap-fit ​​rod (52). The two arc-shaped plates (31) adjacent to the extension plate (32) and corresponding to the position of the first sliding groove (323) are provided with snap-fit ​​grooves (311) for snap-fit ​​plates (53) to snap-fit. It also includes a second driving member (55) for driving the slider (51) to move and a reset member (54) for driving the snap-fit ​​plate (53) to reset. The reset component (54) includes two blocking rings (541) and two elastic members (542); the extension plate (32) has a second sliding groove (324) on the side wall of the second sliding groove (322), the blocking ring (541) is slidably installed on the extension plate (32) through the second sliding groove (324), and the blocking ring (541) is sleeved on the snap-fit ​​rod (52); the two elastic members (542) are respectively sleeved on the two snap-fit ​​rods (52), each elastic member (542) is located on the side of the blocking ring (541) away from the slider (51), one end of each elastic member (542) abuts against the blocking ring (541) and the other end abuts against the extension plate (32).

2. The continuous manually excavated pile step retaining wall structure according to claim 1, characterized in that, The second driving component (55) is a second driving cylinder (551) fixedly installed on the extension plate (32), and the piston rod of the second driving cylinder (551) is fixed to the slider (51).

3. A continuous manually excavated pile step retaining wall structure according to any one of claims 1-2, characterized in that, The first telescopic component (6) includes a plurality of first cylinders (61), which are fixed circumferentially to the support rod (1). The plurality of first cylinders (61) are arranged in a one-to-one correspondence with the curved panel (21), and the piston rod of each first cylinder (61) is fixedly connected to the curved panel (21).

4. The continuous manually excavated pile step retaining wall structure according to claim 3, characterized in that, The second telescopic component (7) includes a plurality of second cylinders (71), which are located below the first cylinder (61). The plurality of second cylinders (71) are fixed circumferentially to the support rod (1). The plurality of second cylinders (71) are arranged in a one-to-one correspondence with the arc plate (31), and the piston rod of each second cylinder (71) is fixedly connected to the arc plate (31).

5. The continuous manually excavated pile step retaining wall structure according to claim 4, characterized in that, Each of the splicing plates (22) and each of the extension plates (32) is equipped with a hanging ring (9), and a hanging rope (8) is provided on the support rod (1).

6. A construction method for a continuous manually excavated bored pile stepped retaining wall structure, based on the continuous manually excavated bored pile stepped retaining wall structure of claim 5, characterized in that, The method includes: Step 1: Excavate a bored pile to a certain depth, and hoist several curved panels (21), spliced ​​panels (22), arc-shaped panels (31) and extension panels (32) into the bored pile; Step 2: Drive the first telescopic component (6) to extend the curved panel (21), insert the splicing plate (22) between two adjacent curved panels (21), and activate the first connecting component (4) to install the splicing plate (22) between two adjacent curved panels (21) to form the side template (2); Step 3: Drive the second telescopic component (7) to extend the arc plate (31), insert the extension plate (32) between two adjacent arc plates (31), and activate the second connecting component (5) to install the extension plate (32) between two adjacent arc plates (31) to form the bottom template (3); Step 4: Pour concrete into the space enclosed by the side formwork (2), the bottom formwork (3), and the inner wall of the pile hole to complete a section of retaining wall (101) with an inverted trapezoidal cross section; Step 5: After the retaining wall (101) is stabilized, start the first connecting component (4) and the second connecting component (5) to disassemble the splicing plate (22) and the extension plate (32) respectively; and drive the first telescopic component (6) and the second telescopic component (7) to retract the curved panel (21) and the arc plate (31) respectively; Step 6: Use the hanging rope (8) to pass through the hanging ring (9) to connect the disassembled curved panel (21) and the arc plate (31); Step 7: Hoist the disassembled splicing plate (22), extension plate (32), curved plate (21) and arc plate (31) to the outside of the bored pile; Step 8: Continue to excavate bored piles to a certain depth, repeat steps 2 to 7, and complete the construction of multiple retaining walls (101).

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