A construction method for box-shaped steel sheet piles

Abstract

This invention discloses a construction method for box-shaped steel sheet piles, relating to the field of pile foundation construction technology. It features a guide frame that allows the box-shaped steel sheet piles to be driven into their desired positions one by one when a row of them needs to be driven in, reducing difficulties in pile driving and the occurrence of interlocking tearing. This ensures that each pile is successfully driven to the ground, improving construction efficiency. The key technical points are: rail frame construction, driving two rows of positioning piles into the ground, with the upper end of each row extending above the ground and connected to a load-bearing beam. The two load-bearing beams are parallel, and a track is laid along the length of each beam. The guide frame is hoisted onto the track, allowing it to slide and connect with the track. The guide frame has upper and lower limiting components, ensuring the box-shaped steel sheet piles are vertically distributed. The guide frame drives each box-shaped steel sheet pile into its designed elevation position.

Description

Technical Field

[0001] This invention relates to the field of pile foundation construction technology, specifically to a construction method for box-shaped steel sheet piles. Background Technology

[0002] The dock walls utilize a sheet pile anchoring structure, which also serves as a water-stop wall. The sheet piles function as both the retaining structure during construction and the permanent structure of the dock walls. The construction of the combined box-shaped sheet piles for the dock walls typically employs a hammer-driven pile driving technique.

[0003] Chinese patent application number CN200510026093.6 discloses a construction method for combined box-shaped steel sheet piles for dock walls, including the following steps: Step 1: Fix the guide frame, insert steel sheet piles into the guide frame, and position the piles according to the guide frame to form a screen-like pile insertion. The piles are driven using an interval reverse jumping method; Step 2: After a group of steel sheet piles is inserted within the length of the guide frame, insert the first pile of the next group close to the last steel sheet pile, leaving part of the first pile on the ground as a positioning pile for the next group of steel sheet piles, and then remove the guide frame; Step 3: Fix the second guide frame with the first pile as a limiting pile, and insert steel sheet piles into the second guide frame. This process is repeated for continuous construction.

[0004] However, the above construction method requires fixing the guide frame. After the first set of sheet piles is driven into the ground, the guide frame is removed by a crane. Then the guide frame of the second set is fixed and the second set of sheet piles is driven into the ground. As a result, each set of sheet piles can only be driven above the guide frame to form a screen before being driven further down. At this time, since the interlocking joints between each set of sheet piles are interlocked, there are problems such as difficulty in driving the piles and tearing of the interlocking joints.

[0005] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address the aforementioned technical shortcomings, the present invention aims to provide a construction method for box-shaped sheet piles. This method allows the guide frame to move when a row of box-shaped sheet piles needs to be driven into the required position, thereby reducing difficulties in pile driving and the occurrence of interlocking tearing.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This invention provides a construction method for box-shaped steel sheet piles, comprising the following steps:

[0009] Step 1: Level the site, repair and lay roadbed boxes or steel plates. After the work is completed, the equipment will be brought to the site.

[0010] Step 2: Rail frame construction. Two rows of positioning piles are driven into the ground. The upper end of each row of positioning piles extends out of the ground and is connected to a load-bearing beam. The two load-bearing beams are distributed in parallel and the track is laid along the length of each load-bearing beam.

[0011] Step 3: Install the guide frame. Hoist the guide frame onto the track so that the guide frame slides and connects with the track. The guide frame is equipped with upper and lower limiting components, which ensure that the box-shaped steel sheet piles are in a vertical distribution state.

[0012] Step 4, pile foundation construction: box-shaped steel sheet piles are driven one by one into the design elevation position using a guide frame.

[0013] By adopting the above technical solution, the setting of two rows of positioning piles facilitates the fixing of the load-bearing beam, which in turn facilitates the installation of the track and guide frame. The setting of upper and lower limiting components facilitates the limitation of the position of the box steel sheet piles, which in turn facilitates the vertical distribution of the box steel sheet piles and facilitates subsequent piling. Since the guide frame moves on the track, it can be moved after one box steel sheet pile is driven, without the need for multiple installation and disassembly of the guide frame. This achieves the goal of allowing the guide frame to move when a row of box steel sheet piles needs to be driven, so that the box steel sheet piles can be driven into the required position one by one, reducing the difficulty of pile driving and the occurrence of interlocking tearing, thereby improving piling efficiency.

[0014] Preferably, the specific injection method in step 4 is as follows:

[0015] First, drive the first box-shaped steel sheet pile, with the pile head parallel to the ground and protruding 50±5 cm above the uppermost limiting piece;

[0016] The second box-shaped sheet pile is kept vertical using a guide frame, with its locking lug inserted into the locking lug of the first box-shaped sheet pile. The pile is driven to 1 meter above the uppermost limiting piece of the guide frame. The guide frame is then moved away from the second box-shaped sheet pile until the upper limiting piece retracts from it. The second box-shaped sheet pile is then driven further to above the lowermost limiting piece of the guide frame. Once the adjacent third box-shaped sheet pile is completed and its head is flush with the second box-shaped sheet pile, ensuring the lowermost limiting piece does not retract from the second box-shaped sheet pile, the second box-shaped sheet pile is driven to the design elevation.

[0017] After the fourth adjacent box-shaped sheet pile is completed and level with the head of the third box-shaped sheet pile, and the bottommost limiting piece does not retract from the third box-shaped sheet pile, continue driving the third box-shaped sheet pile to the design elevation.

[0018] By doing so, the construction of all the box-shaped sheet piles in a row between the two tracks is completed.

[0019] Preferably, the guide frame includes a traveling trolley slidably connected to two tracks. The upper surface of the traveling trolley is provided with two opposing support frames. The two support frames are gradually inclined towards each other from the fixed position with the traveling trolley. The upper limiting member is provided above the two support frames, and the lower limiting member is provided on the upper surface of the traveling trolley.

[0020] The traveling trolley includes a U-shaped horizontal frame and a support plate disposed between the opposite frame walls of the horizontal frame. The opposite frame walls of the horizontal frame are distributed along the length direction of two tracks. A structure that travels along the tracks is provided below the horizontal frame. The two support frames are respectively disposed on the upper end face of the two opposite frame walls of the horizontal frame.

[0021] Both the upper and lower limiting components include a U-shaped limiting plate that is aligned with the opening direction of the horizontal frame. The upper limiting plate is fixed to the support frame, and the lower limiting plate is fixed to the opposite frame wall of the horizontal frame by several connecting rods.

[0022] The two oppositely distributed walls of the upper and lower limiting plates are called long arms, and the wall connecting the two long arms is called short arms. The long arms and short arms of the upper and lower layers are distributed one-to-one. The long arms of the upper and lower layers are located on the opposite side of two parallel surfaces of a box-shaped steel sheet pile and are in contact with the box-shaped steel sheet pile. The central axes of the upper and lower limiting plates are located on the same vertical plane. The length dimension of the two oppositely distributed long arms of the lower limiting plate is D1, and the length dimension of the two correspondingly distributed long arms of the upper limiting plate is D2. D1 is greater than D2: the width of two to three box-shaped steel sheet piles.

[0023] Both the upper and lower limit plates are equipped with positioning components to locate the position of the box-shaped steel sheet piles.

[0024] Preferably, the positioning component includes an inclined surface and an insertion groove disposed on the short arm of the upper and lower limiting plates and cooperating with the two adjacent outer walls and the locking opening of the box-shaped steel sheet pile. The insertion groove is for the locking opening of the box-shaped steel sheet pile to be inserted, and the inclined surface is for the two adjacent outer walls on both sides of the locking opening of the box-shaped steel sheet pile to be abutted.

[0025] When driving the first box-shaped sheet pile, the long arms of the upper and lower limiting plates are connected by a connecting plate. The two ends of the connecting plate are detachably connected to the long arms by pins. The gap between one side of the connecting plate and the bottom of the trench is the width of one box-shaped sheet pile.

[0026] Preferably, the upper ends of the two support frames are provided with U-shaped fixing plates distributed along the limiting plate. One long arm and one short arm of the limiting plate are respectively fixed to the upper surface of the fixing plate, and the other long wall is slidably connected to the short arm of the limiting plate, and the sliding direction is along the length direction of the short arm. The upper surface of the short arm is provided with an electric cylinder for pushing the long arm to slide.

[0027] The positioning component includes two extension rods that are both mounted on two long arms and extend towards each other. The end of the extension rod away from the long arm is provided with a positioning plate one that fits against the outer wall of the box-shaped steel sheet pile. The side of the short arm facing the positioning plate one is provided with an electric cylinder two. The piston rod of the electric cylinder two is provided with a positioning plate two opposite to the positioning plate one. The positioning plate two is provided with a surface that fits against the outer wall of the box-shaped steel sheet pile away from the positioning plate one and a clearance groove for the locking opening of the box-shaped steel sheet pile to be inserted. The size of the clearance groove is larger than the size of the locking opening of the box-shaped steel sheet pile.

[0028] Once the positioning element positions a box-shaped sheet pile, the upper long arm extends to a position close to the locking point of the adjacent box-shaped sheet pile.

[0029] Preferably, the above-mentioned positioning component is replaced with: the positioning component includes a figure-eight shaped positioning plate three, which is disposed on two long arms and fits against the outer wall of the box-shaped steel sheet pile. Each of the long arms includes a first plate and a second plate. The second plate is sleeved on the outside of the first plate and slidably connected to the outer wall of the first plate. One of the two first plates is fixed on the short arm, and the other is slidably connected to the short arm. The positioning plate three is fixed on the second plate. The short arm is provided with an electric cylinder three below the two first plates. The piston rod of the electric cylinder three is provided with a connecting plate connected to the second plate.

[0030] Once the positioning element positions a box-shaped sheet pile, the upper long arm extends to a position close to the locking point of the adjacent box-shaped sheet pile.

[0031] Preferably, the upper limiting plate is surrounded by guardrails, and the upper and lower limiting plates are connected by several vertical columns.

[0032] Preferably, the support frame consists of several diagonal bars, and the horizontal frame is provided with a ladder connected to the upper limiting plate, the ladder being distributed at an incline.

[0033] Preferably, the short arm is provided with a guide plate located on the opposite side of the two second plates, and the outer wall of the second plate is slidably connected to the guide plate.

[0034] Preferably, the positioning element and the outer wall of the box-shaped steel sheet pile are in a clearance fit with a clearance of 1 cm.

[0035] The beneficial effects of this invention are as follows: the arrangement of two rows of positioning piles facilitates the fixing of the load-bearing beam, which in turn facilitates the installation of the track and guide frame. Furthermore, the upper and lower layers of limiting components facilitate the limitation of the position of the box-shaped sheet piles, ensuring that the box-shaped sheet piles are vertically distributed, which is convenient for subsequent pile driving. Since the guide frame moves on the track, it can be moved after one box-shaped sheet pile is driven, eliminating the need for repeated installation and disassembly of the guide frame. This allows the guide frame to move when a row of box-shaped sheet piles needs to be driven, enabling the box-shaped sheet piles to be driven into the required positions one by one, reducing difficulties in pile driving and the occurrence of interlocking tearing, thereby improving pile driving efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0038] Figure 2 This is a structural schematic diagram illustrating the load-bearing beam in this embodiment.

[0039] Figure 3 This is a schematic diagram illustrating the structure of the guide frame in this embodiment;

[0040] Figure 4 This is a structural schematic diagram illustrating the upper limiting plate in this embodiment;

[0041] Figure 5 This is a schematic diagram illustrating the structure after the interlocking joints of two box-shaped sheet piles are connected in this embodiment;

[0042] Figure 6 This is a structural schematic diagram illustrating the process of inserting box-shaped steel sheet piles in this embodiment;

[0043] Figure 7 This is a schematic diagram of the structure of the positioning plate two in this embodiment;

[0044] Figure 8 This is a schematic diagram of the structure of positioning plate three in this embodiment.

[0045] Explanation of reference numerals in the attached figures:

[0046] In the diagram: 1. Load-bearing beam; 11. Track; 12. Guide frame; 13. Support frame; 14. Traveling trolley; 15. Limiting plate; 151. Long arm; 152. Short arm; 153. Inclined surface; 154. Insertion slot; 155. Connecting plate; 16. Electric cylinder one; 17. Extension rod; 171. Positioning plate one; 172. Electric cylinder two; 173. Positioning plate two; 174. Clearance slot; 18. Positioning plate three; 181. First plate; 182. Second plate; 183. Guide plate; 2. Box-shaped steel sheet pile; 21. Locking joint. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] A construction method for box-shaped steel sheet piles, such as Figure 1 He Ru Figure 2 and Figure 3 Each box-shaped sheet pile 2 has a hexagonal frame in longitudinal section and symmetrically provided with locking slots 21 at both ends, including the following steps:

[0049] Step 1: Level the site, repair and lay roadbed boxes or steel plates. After the work is completed, equipment will be brought in; equipment such as cranes and vibratory hammers, etc.

[0050] Step 2: Rail frame construction. Two rows of positioning piles are driven into the ground. The upper end of each row of positioning piles extends out of the ground and is connected to a load-bearing beam 1. The two load-bearing beams 1 are distributed in parallel, and a track 11 is laid along the length of each load-bearing beam 1. The positioning piles can be H-beams or steel pipes, as long as they can be driven into the ground quickly to support the load-bearing beams 1 and are easy to remove later.

[0051] Step 3: Install the guide frame 12. Hoist the guide frame 12 onto the track 11 so that the guide frame 12 and the track 11 are slidably connected. The guide frame 12 is provided with upper and lower limiting components, which make the box-shaped steel sheet piles 2 in a vertical distribution state.

[0052] Step 4, pile foundation construction: the box-shaped steel sheet piles 2 are driven one by one into the design elevation position through the guide frame 12.

[0053] The two rows of positioning piles facilitate the fixing of the load-bearing beam 1, which in turn facilitates the installation of the track 11 and guide frame 12. The upper and lower layers of limiting components help to limit the position of the box-shaped steel sheet piles 2, thus ensuring that the box-shaped steel sheet piles 2 are in a vertical distribution state, which is convenient for subsequent piling. Since the guide frame 12 moves on the track 11, it can be moved after one box-shaped steel sheet pile 2 is driven, without the need for multiple installations and disassemblies of the guide frame 12. This achieves the goal of allowing the guide frame 12 to move when a row of box-shaped steel sheet piles 2 needs to be driven into the required position, thereby reducing difficulties in pile driving and the occurrence of interlocking tearing, and improving piling efficiency.

[0054] Furthermore, during the aforementioned process, the positioning piles, load-bearing beams, and tracks can be continuously installed forward in a reversible manner.

[0055] like Figure 4 and Figure 5 and Figure 6 The specific method for entering the code in step 4 is as follows:

[0056] First, drive the first box-shaped steel sheet pile 2, with the pile head parallel to the ground and protruding 50±5 cm above the uppermost limiting piece;

[0057] The guide frame 12 is used to keep the second box-shaped steel sheet pile 2 vertical, and the locking mouth 21 of the second box-shaped steel sheet pile 2 is inserted into the locking mouth 21 of the first box-shaped steel sheet pile 2. The pile is driven to 1 meter above the uppermost limiting member of the guide frame 12. The guide frame 12 is moved away from the second box-shaped steel sheet pile 2 until the upper limiting member is removed from the second box-shaped steel sheet pile 2. The second box-shaped steel sheet pile 2 is then driven to above the lowermost limiting member of the guide frame 12.

[0058] The guide frame 12 moves toward the second sheet pile 2 to adjust the position of the guide frame 12 so that the third box-shaped sheet pile 2 is in the correct position and inserted.

[0059] The third box-shaped sheet pile 2 is lifted to one side of the second box-shaped sheet pile 2, and the locking mouth 21 of the third box-shaped sheet pile 2 is inserted into the locking mouth 21 of the second box-shaped sheet pile 2. The upper and lower limiting pieces on the guide frame 12 limit the vertical position of the third box-shaped sheet pile 2. The third box-shaped sheet pile 2 is driven to 1 meter above the uppermost limiting piece of the guide frame 12. The guide frame 12 moves away from the third box-shaped sheet pile 2 until the upper limiting piece exits the third box-shaped sheet pile 2. The third box-shaped sheet pile 2 is then driven to above the lowermost limiting piece of the guide frame 12.

[0060] After the third box-shaped sheet pile 2 is completed and level with the pile head of the second box-shaped sheet pile 2, the lowest limiting piece does not retract from the second box-shaped sheet pile 2. At this time, continue driving the second box-shaped sheet pile 2 to the design elevation: drive the pile to 50±5 cm above the ground.

[0061] After the fourth adjacent box-shaped steel sheet pile 2 is completed and level with the pile head of the third box-shaped steel sheet pile 2, the bottommost limiting component still limits the third box-shaped steel sheet pile 2. At this time, continue to drive the third box-shaped steel sheet pile 2 to the design elevation: drive the pile to 50±5 cm above the ground.

[0062] By analogy, the construction of all the box-shaped sheet piles 2 in a row between the two tracks 11 is completed.

[0063] like Figure 4 and Figure 5 and Figure 6 At this time, each box-shaped steel sheet pile 2 is driven into the ground intermittently. The short interval makes it easy for the pile to be driven into the ground, which is efficient and the pile is not easily damaged. Moreover, each pile is only associated with the adjacent previous pile, which reduces the difficulty of driving the pile and avoids damage to the pile head and tearing of the lock, thereby ensuring that each pile can be driven into the ground smoothly and improving construction efficiency.

[0064] like Figure 4 and Figure 5 and Figure 3 The guide frame 12 includes a traveling trolley 14 that is slidably connected to two rails 11. The upper surface of the traveling trolley 14 is provided with two opposing support frames 13. The two support frames 13 are gradually inclined towards each other from the position fixed to the traveling trolley, so as to facilitate the fixing of the upper limiting member. The upper limiting member is set above the two support frames 13, and the lower limiting member is set on the upper surface of the traveling trolley 14.

[0065] like Figure 4 and Figure 5 and Figure 3 The traveling trolley 14 includes a U-shaped horizontal frame and a support plate disposed between the opposite frame walls of the horizontal frame. Several support plates can be provided to strengthen the horizontal frame. The opposite frame walls of the horizontal frame are distributed along the length direction of the two tracks 11 respectively. A structure that travels along the tracks 11 is provided below the horizontal frame. Two support frames 13 are respectively disposed on the upper end face of the two opposite frame walls of the horizontal frame.

[0066] like Figure 4 and Figure 5 and Figure 3The structure below the horizontal frame that moves along track 11 can be an existing structure. For example, a motor can be mounted on the support plate, and four rollers can be rotatably mounted on the track 11 at the bottom of the horizontal frame. The four rollers are paired and connected to each other by a rotating shaft. The rotating shaft is rotatably connected to the bottom of the horizontal frame. The rotating shaft of the motor and the rotating shaft are equipped with meshing gears, which allows the motor to drive one of the rotating shafts to rotate, thereby moving the horizontal frame along track 11. The design simply requires that the horizontal frame moves automatically along track 11, and the rollers are positioned away from the lower limiting member. Furthermore, a brake is located at the bottom of the horizontal frame to stop the rotating shafts from rotating. The brake stops the horizontal frame on track 11. The above-mentioned structures for moving and braking the horizontal frame can all be existing structures, as long as they are located on one side of the lower limiting member.

[0067] like Figure 4 and Figure 5 and Figure 6 Both the upper and lower limiting components include a U-shaped limiting plate 15 that is aligned with the opening direction of the horizontal frame. The upper limiting plate 15 is fixed to the support frame 13, and the lower limiting plate 15 is fixed to the opposite frame wall of the horizontal frame by several connecting rods.

[0068] like Figure 4 and Figure 5 and Figure 6 The two oppositely distributed walls of the upper and lower limiting plates 15 are called long arms 151, and the wall connecting the two long arms 151 is called short arms 152. The long arms 151 and short arms 152 of the upper and lower layers are distributed one-to-one. The long arms 151 of the upper and lower layers are located on the opposite side of two parallel surfaces of a box-shaped steel sheet pile 2 and are in contact with the box-shaped steel sheet pile 2. The central axis of the upper and lower limiting plates 15 is located on the same vertical plane, and this vertical plane is where the row of box-shaped steel sheet piles 2 is inserted. The length dimension of the two oppositely distributed long arms 151 of the lower limiting plate 15 is D1, and the length dimension of the two correspondingly distributed long arms 151 of the upper limiting plate 15 is D2. D1 is greater than D2: the width of two to three box-shaped steel sheet piles 2.

[0069] Both the upper and lower limit plates 15 are equipped with positioning components for the positioning box-shaped steel sheet piles 2.

[0070] like Figure 4 and Figure 5 and Figure 6 The positioning component includes an inclined surface 153 and an insertion groove 154, which are provided on the short arm 152 of the upper and lower limiting plates 15 and cooperate with the two adjacent outer walls and the locking opening 21 of the box-shaped steel sheet pile 2. The insertion groove 154 is for the locking opening 21 of the box-shaped steel sheet pile 2 to be inserted, and the inclined surface 153 is for the two adjacent outer walls on both sides of the locking opening 21 of the box-shaped steel sheet pile 2 to be attached.

[0071] like Figure 4 and Figure 5 and Figure 6 When the first box-shaped sheet pile 2 is driven, the long arms 151 of the upper and lower limiting plates 15 are connected by a connecting plate 155. The two ends of the connecting plate 155 are located on the upper end face of the long arm 151 and are detachably connected to the long arm 151 by a pin. The gap between one side of the connecting plate 155 and the bottom of the slot 154 is the width of one box-shaped sheet pile 2.

[0072] like Figure 4 and Figure 5 and Figure 6 Working principle of guide frame 12:

[0073] Step 1: When driving the first box-shaped steel sheet pile 2, first install the connecting plate 155 on the upper and lower limiting plates 15 on the limiting plate 15 through the pin. Then lift the first box-shaped steel sheet pile 2 between the connecting plate 155 and the limiting plate 15. At this time, the upper and lower connecting plates 155 and the limiting plate 15 limit the verticality of the first box-shaped steel sheet pile 2.

[0074] Step 2: After driving the first box-shaped steel sheet pile 2 until the pile head is parallel to the ground and protrudes 50 cm above the upper limiting plate 15, disassemble the connecting plate 155.

[0075] Step 3: Move the guide frame 12 away from the first box-shaped sheet pile 2, so that the upper limiting plate 15 exits the first box-shaped sheet pile 2, lift the second box-shaped sheet pile 2 to one side of the first box-shaped sheet pile 2, and insert one locking port 21 of the second box-shaped sheet pile 2 into the locking port 21 of the first box-shaped sheet pile 2, and the other locking port 21 of the second box-shaped sheet pile 2 enters the placement groove 154. At this time, the guide frame 12 is in a braking state. The second box-shaped sheet pile 2 is restricted in its left and right position by the inclined surface 153, the placement groove 154 and the locking port 21 of the first box-shaped sheet pile 2, and is restricted in its front and back position by the two long arms 151 of the limiting plate 15. The left and right position is the position distributed along the length direction of the track 11, and the front and back position is the position perpendicular to the length direction of the track 11.

[0076] Step 4: After the second box-shaped sheet pile 2 is positioned, drive the pile to 1 meter above the uppermost limiting piece of the guide frame 12. Move the guide frame 12 away from the second box-shaped sheet pile 2 until the upper limiting plate 15 exits the second box-shaped sheet pile 2. Continue driving the second box-shaped sheet pile 2 to above the lowermost limiting plate 15 of the guide frame 12. At this time, the distance the guide frame 12 moves should be sufficient to facilitate the downward driving of the vibratory hammer. The U-shaped limiting plate 15 and the horizontal frame are designed to facilitate the removal of the box-shaped sheet pile 2.

[0077] Step 5: The guide frame 12 moves towards the second sheet pile 2 to adjust its position so that the third box-shaped sheet pile 2 is correctly positioned. The third box-shaped sheet pile 2 is then inserted, and it is lifted to one side of the second sheet pile 2. The third sheet pile 2 is gradually lowered until its locking lug 21 is inserted into the locking lug 21 of the second sheet pile 2. The guide frame 12 is then moved towards the second sheet pile 2 so that the third sheet pile 2 is properly positioned. Another locking port 21 of the box-shaped sheet pile 2 enters the insertion slot 154, and then the brake is applied. The upper and lower limiting pieces on the guide frame 12 limit the vertical position of the third box-shaped sheet pile 2, and the third box-shaped sheet pile 2 is driven to 1 meter above the uppermost limiting piece of the guide frame 12. The guide frame 12 moves away from the third box-shaped sheet pile 2 until the upper limiting plate 15 exits the third box-shaped sheet pile 2, and the third box-shaped sheet pile 2 continues to be driven to above the lowermost limiting piece of the guide frame 12.

[0078] Step 6: After the third box-shaped sheet pile 2 is completed and level with the pile head of the second box-shaped sheet pile 2, the guide frame 12 moves so that the bottommost limiting plate 15 is still not removed from the second box-shaped sheet pile 2. At this time, continue to drive the second box-shaped sheet pile 2 to the design elevation; the design elevation is when the pile head is driven to 50±5 cm above the ground.

[0079] Step 7: After the fourth adjacent box-shaped steel sheet pile 2 is completed and level with the pile head of the third box-shaped steel sheet pile 2, ensure that the bottommost limiting piece does not retract from the third box-shaped steel sheet pile 2. At this point, continue driving the third box-shaped steel sheet pile 2 to the design elevation.

[0080] The construction of the fourth box-shaped sheet pile 2 is the same as that of the third box-shaped sheet pile 2, and so on, to gradually complete the driving of each box-shaped sheet pile 2. The connection of the interlocking joint 21 of each adjacent box-shaped sheet pile 2 needs to be checked manually.

[0081] In order to enable the box-shaped steel sheet pile 2 to be automatically placed in the positioning component, the following two structures are designed:

[0082] like Figure 7Alternatively, the upper ends of the two support frames 13 are provided with U-shaped fixing plates (not shown in the figure) distributed along the limiting plate 15. One long arm 151 and one short arm 152 of the limiting plate 15 are respectively fixed to the upper surface of the fixing plate. Another long wall is slidably connected to the short arm 152 of the limiting plate 15, and the sliding direction is along the length direction of the short arm 152. The bottom of the moving long arm 151 is also slidably on the upper surface of the fixing plate. The fixing plate is located at the bottom of the limiting plate 15. When the two long arms 151 of the limiting plate 15 are connected to the box-shaped steel sheet pile 2 When the two side walls are in contact, the fixing plate is not in contact with the side wall of the box-shaped steel sheet pile 2. The upper end face of the short arm 152 is provided with an electric cylinder 16 that pushes the long arm 151 to slide. The piston rod of the electric cylinder 16 is provided with an L-shaped driving rod. The end of the driving rod away from the electric cylinder 16 is fixedly connected to the moving long arm 151. The electric cylinder 16 can easily drive one long arm 151 to move away from or closer to the other long arm 151, thereby achieving the purpose of opening the two long arms 151 to facilitate the insertion of the box-shaped steel sheet pile 2 between the two long arms 151.

[0083] like Figure 7 The positioning component includes two extension rods 17, each mounted on a long arm 151 and extending towards each other. The end of the extension rod 17 away from the long arm 151 is provided with a positioning plate 171 that fits against the outer wall of the box-shaped sheet pile 2. The side of the short arm 152 facing the positioning plate 171 is provided with an electric cylinder 172. The piston rod of the electric cylinder 172 is provided with a positioning plate 173 opposite to the positioning plate 171. The positioning plate 173 is provided with a surface that fits against the outer wall of the box-shaped sheet pile 2 away from the positioning plate 171 and a clearance groove 174 for the locking opening 21 of the box-shaped sheet pile 2 to be inserted. The size of the clearance groove 174 is larger than the size of the locking opening 21 of the box-shaped sheet pile 2.

[0084] like Figure 7 The positioning of the box-shaped sheet pile 2 is achieved by the surfaces and clearance grooves 174 on the two positioning plates 171 and 173.

[0085] like Figure 7 When the box-shaped sheet pile 2 is lowered, the electric cylinder 16 drives the long arm 151 to move, increasing the distance between the two long arms 151. The electric cylinder 2 172 also drives the positioning plate 2 173 away from the positioning plate 171, making it easier to lower the lower end of the box-shaped sheet pile 2 between the positioning plate 171 and the positioning plate 2 173. Then, the electric cylinder 16 reduces the distance between the two long arms 151, causing the two positioning plates 171 to move to the position for positioning the box-shaped sheet pile 2. The electric cylinder 2 172 causes the positioning plate 2 173 to generate a pushing force on the box-shaped sheet pile 2 in the direction of the positioning plate 171, thereby making it easier to limit the box-shaped sheet pile 2 between the positioning plate 171 and the positioning plate 2 173. At this time, there is a gap of about 1 cm between the positioning plate 2 173 and the positioning plate 171 and the outer wall of the box-shaped sheet pile 2, and they are not pressed tightly against the outer wall of the box-shaped sheet pile 2.

[0086] like Figure 7 When the third box-shaped sheet pile 2 is used, continue to lower the box-shaped sheet pile 2 so that the locking port 21 of the box-shaped sheet pile 2 is directly opposite the previous box-shaped sheet pile 2 and the locking port 21 is easy to connect. At this time, there is only the limiting plate 15 in the lower layer, and the pile is driven to 1 meter above the uppermost limiting part of the guide frame 12.

[0087] like Figure 7 When the positioning component positions a box-shaped sheet pile 2, the upper long arm 151 extends to a position close to the locking opening 21 of the adjacent box-shaped sheet pile 2, so that the guide frame 12 can move only slightly larger than the position of a box-shaped sheet pile 2 to move the box-shaped sheet pile 2 out of the upper long arm 151.

[0088] like Figure 8 Alternatively, the aforementioned positioning element can be replaced with: a positioning element comprising a figure-eight shaped positioning plate 18, each mounted on one of the two long arms 151 and fitted against the outer wall of the box-shaped sheet pile 2. Each long arm 151 includes a first plate 181 and a second plate 182. The second plate 182 is fitted over the first plate 181 and slidably connected to the outer wall of the first plate 181. One of the two first plates 181 is fixed to the short arm 152, and the other is slidably connected to the short arm 152. The positioning plate 18 is fixed to the second plate 182. The short arm 152 is equipped with an electric cylinder 3 (not shown in the figure) below the two first plates 181. The piston rod of the electric cylinder 3 is equipped with a connecting plate connected to the second plate 182; this facilitates the electric cylinder 3 to drive the second plate 182 to slide on the first plate 181. The short arm 152 is equipped with a guide plate 183 located on the opposite side of the two second plates 182. The outer wall of the second plate 182 is slidably connected to the guide plate 183, increasing the strength of the second plate 182.

[0089] like Figure 8 When the positioning element positions a box-shaped sheet pile 2, the upper long arm 151 extends to a position close to the locking opening 21 of the adjacent box-shaped sheet pile 2.

[0090] like Figure 8 When the box-shaped sheet pile 2 is lowered, the electric cylinder 16 moves the long arm 151, increasing the distance between the two long arms 151 and the distance between the two positioning plates 18. This facilitates lowering the lower end of the box-shaped sheet pile 2 between the two positioning plates 18. Subsequently, the electric cylinder 16 reduces the distance between the two long arms 151, moving the two positioning plates 18 to the position for positioning the box-shaped sheet pile 2. This helps to limit the box-shaped sheet pile 2 between the two positioning plates 18. At this time, there is a gap of about 1 cm between the two positioning plates 18 and the outer wall of the box-shaped sheet pile 2, and the outer wall of the box-shaped sheet pile 2 is not pressed tightly.

[0091] like Figure 8When the third box-shaped sheet pile 2 is used, continue to lower the box-shaped sheet pile 2 so that the locking port 21 of the box-shaped sheet pile 2 is directly opposite the previous box-shaped sheet pile 2 and the locking port 21 is easy to connect. At this time, there is only the limiting plate 15 in the lower layer, and the pile is driven to 1 meter above the uppermost limiting part of the guide frame 12.

[0092] like Figure 8 When the guide frame 12 moves only slightly more than the position of one box-shaped sheet pile 2, so that the box-shaped sheet pile 2 moves out of the upper long arm 151, in order to facilitate the positioning of the next box-shaped sheet pile 2, the previous positioning requires the guide frame 12 to be moved towards the previous box-shaped sheet pile 2. However, with this positioning, the guide frame 12 is no longer needed. Only the electric cylinder 3 drives the second plate 182 to slide on the first plate 181, thereby adjusting the position of the two positioning 3s and compensating for the movement of the guide frame 12.

[0093] Ball bearings can be embedded in the aforementioned positioning plates 171, 173, 18, and inclined surface 153 to reduce the friction between the outer surface of the box-shaped sheet pile 2 and the positioning plates 171, 173, 18, and inclined surface 153 when the box-shaped sheet pile 2 is below. Furthermore, it can be optimized by providing a moving groove on the positioning plates 171, 173, 18, and inclined surface 153. The bottom of the moving groove is provided with a compression spring that allows the ball bearings to partially move out of the moving groove. At this time, the compression spring causes the ball bearings to abut against the box-shaped sheet pile 2.

[0094] The upper limiting plate 15 is surrounded by guardrails, and the upper and lower limiting plates 15 are connected by several vertical columns. The support frame consists of several diagonal bars, and a ladder connected to the upper limiting plate 15 is provided on the horizontal frame. The ladder is distributed at an incline.

[0095] The positioning component and the outer wall of the box-shaped steel sheet pile 2 are positioned with a clearance fit, with a clearance of 1 cm.

[0096] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A construction method for box-shaped steel sheet piles, characterized in that, Includes the following steps: Step 1: Level the site, repair and lay roadbed boxes or steel plates. After the work is completed, the equipment will be brought to the site. Step 2, track frame construction: drive two rows of positioning piles into the ground. The upper end of each row of positioning piles extends out of the ground and the upper end of each row of positioning piles is connected to a load-bearing beam (1). The two load-bearing beams (1) are distributed in parallel and a track (11) is laid along the length of the load-bearing beam (1) at the upper end of each load-bearing beam (1). Step 3: Install the guide frame (12). Hoist the guide frame (12) onto the track (11) so that the guide frame (12) and the track (11) slide together. The guide frame (12) is provided with upper and lower limiting components. The limiting components make the box-shaped steel sheet pile (2) in a vertical distribution state. Step 4, pile foundation construction, using guide frame (12) to drive box-shaped steel sheet piles (2) one by one into the design elevation position; The specific method for entering the code in step 4: First, drive the first box-shaped steel sheet pile (2), with the pile head parallel to the ground and protruding 50±5 cm above the uppermost limiting piece; The second box-shaped sheet pile (2) is kept vertical using the guide frame (12), and the locking mouth (21) of the second box-shaped sheet pile (2) is inserted into the locking mouth (21) of the first box-shaped sheet pile (2). The pile is driven to 1 meter above the uppermost limiting piece of the guide frame (12). The guide frame (12) moves away from the second box-shaped sheet pile (2) until the upper limiting piece exits the second box-shaped sheet pile (2). The second box-shaped sheet pile (2) is driven to the uppermost limiting piece of the guide frame (12). After the construction of the adjacent third box-shaped sheet pile (2) is completed and the pile head of the second box-shaped sheet pile (2) is flush, the lowermost limiting piece does not exit the second box-shaped sheet pile (2). At this time, the second box-shaped sheet pile (2) is driven to the design elevation. After the fourth adjacent box-shaped steel sheet pile (2) is completed and level with the pile head of the third box-shaped steel sheet pile (2), the bottommost limiting piece does not exit the third box-shaped steel sheet pile (2). At this time, continue to drive the third box-shaped steel sheet pile (2) to the design elevation. By analogy, the construction of all the box-shaped sheet piles (2) in a row between the two tracks (11) is completed.

2. The construction method of a box-shaped steel sheet pile as described in claim 1, characterized in that, The guide frame (12) includes a traveling trolley (14) slidably connected to two tracks (11). The upper surface of the traveling trolley (14) is provided with two opposing support frames (13). The two support frames (13) are gradually inclined towards each other from the position fixed to the traveling trolley. The upper limiting member is provided above the two support frames (13), and the lower limiting member is provided on the upper surface of the traveling trolley (14). The walking trolley (14) includes a horizontal frame distributed in a U-shape and a support plate disposed between the opposite frame walls of the horizontal frame. The opposite frame walls of the horizontal frame are distributed along the length direction of the two tracks (11). The horizontal frame is provided with a structure that travels along the tracks (11) below it. The two support frames (13) are respectively disposed on the upper surfaces of the two opposite frame walls of the horizontal frame. Both the upper and lower limiting components include a U-shaped limiting plate (15) that is consistent with the opening direction of the horizontal frame. The upper limiting plate (15) is fixed on the support frame (13), and the lower limiting plate (15) is fixed to the opposite frame wall of the horizontal frame by several connecting rods. The two oppositely distributed walls of the upper and lower limiting plates (15) are called long arms (151), and the wall connecting the two long arms (151) is called short arms (152). The long arms (151) and short arms (152) of the upper and lower layers are distributed one-to-one. The long arms (151) of the upper and lower layers are located on the opposite side of two parallel surfaces of a box-shaped steel sheet pile (2) and are in contact with the box-shaped steel sheet pile (2). The central axis of the upper and lower limiting plates (15) is located on the same vertical plane. The length dimension of the two oppositely distributed long arms (151) of the lower limiting plate (15) is D1, and the length dimension of the two correspondingly distributed long arms (151) of the upper limiting plate (15) is D2. D1 is greater than D2: the width of two to three box-shaped steel sheet piles (2). Both the upper and lower limiting plates (15) are equipped with positioning components for the positioning box-shaped steel sheet piles (2).

3. The construction method of a box-shaped steel sheet pile as described in claim 2, characterized in that, The positioning component includes an inclined surface (153) and an insertion groove (154) provided on the short arm (152) of the upper and lower limiting plates (15) and cooperating with the two adjacent outer walls and the locking opening (21) of the box-shaped steel sheet pile (2). The insertion groove (154) is for the locking opening (21) of the box-shaped steel sheet pile (2) to be inserted, and the inclined surface (153) is for the two adjacent outer walls on both sides of the locking opening (21) of the box-shaped steel sheet pile (2) to be fitted together. When the first box-shaped sheet pile (2) is driven, the long arms (151) of the upper and lower limiting plates (15) are connected by a connecting plate (155). The two ends of the connecting plate (155) are detachably connected to the long arms (151) by pins. The gap between one side of the connecting plate (155) and the bottom of the slot (154) is the width of one box-shaped sheet pile (2).

4. The construction method of a box-shaped steel sheet pile as described in claim 2, characterized in that, The upper ends of the two support frames (13) are provided with U-shaped fixing plates distributed along the limiting plate (15). One long arm (151) and one short arm (152) of the limiting plate (15) are respectively fixed on the upper surface of the fixing plate. Another long wall is slidably connected to the short arm (152) of the limiting plate (15), and the sliding direction is along the length direction of the short arm (152). The upper surface of the short arm (152) is provided with an electric cylinder (16) for pushing the long arm (151) to slide. The positioning component includes two extension rods (17) that are both mounted on two long arms (151) and extend towards each other. The end of the extension rod (17) away from the long arm (151) is provided with a positioning plate (171) that fits against the outer wall of the box-shaped steel sheet pile (2). The side of the short arm (152) facing the positioning plate (171) is provided with an electric cylinder (172). The piston rod of the electric cylinder (172) is provided with a positioning plate (173) that is opposite to the positioning plate (171). The positioning plate (173) is provided with a surface that fits against the outer wall of the box-shaped steel sheet pile (2) away from the positioning plate (171) and a clearance groove (174) for the locking opening (21) of the box-shaped steel sheet pile (2) to be inserted. The size of the clearance groove (174) is larger than the size of the locking opening (21) of the box-shaped steel sheet pile (2). Once the positioning element positions a box sheet pile (2), the upper long arm (151) extends to a position close to the locking opening (21) of the adjacent box sheet pile (2).

5. The construction method of a box-shaped steel sheet pile as described in claim 4, characterized in that, The above positioning component is replaced by: the positioning component includes a figure-eight positioning plate three (18) which is set on both long arms (151) and fits against the outer wall of the box-shaped steel sheet pile (2). Each long arm (151) includes a first plate (181) and a second plate (182). The second plate (182) is sleeved on the first plate (181) and slidably connected to the outer wall of the first plate (181). One of the two first plates (181) is fixed on the short arm (152) and the other is slidably connected to the short arm (152). The positioning plate three (18) is fixed on the second plate (182). The short arm (152) is provided with an electric cylinder three below the two first plates (181). The piston rod of the electric cylinder three is provided with a connecting plate connected to the second plate (182). Once the positioning element positions a box sheet pile (2), the upper long arm (151) extends to a position close to the locking opening (21) of the adjacent box sheet pile (2).

6. The construction method of a box-shaped steel sheet pile as described in claim 2, characterized in that, The upper limiting plate (15) is surrounded by guardrails, and the upper and lower limiting plates (15) are connected by several vertical columns.

7. The construction method of a box-shaped steel sheet pile as described in claim 6, characterized in that, The support frame (13) consists of several diagonal bars, and the horizontal frame is provided with a ladder connected to the upper limiting plate (15), and the ladder is distributed at an incline.

8. The construction method of a box-shaped steel sheet pile as described in claim 5, characterized in that, The short arm (152) is provided with a guide plate (183) located on the opposite side of the two second plates (182), and the outer wall of the second plate (182) is slidably connected to the guide plate (183).

9. The construction method of a box-shaped steel sheet pile as described in claim 2, characterized in that, The positioning component and the outer wall of the box-shaped steel sheet pile (2) are in a clearance fit with a clearance of 1 cm.

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