Construction method of box-shaped steel sheet pile

Abstract

The invention discloses a construction method of box-shaped steel sheet piles, relates to the technical field of pile foundation construction, and has the advantages that when a row of box-shaped steel sheet piles need to be inserted, a guide frame can move, so that the box-shaped steel sheet piles can be driven into the required positions one by one, and the conditions that the piles are difficult to feed and locking openings are torn are reduced. According to the technical scheme, the construction method is characterized in that rail frame construction is carried out, two rows of positioning piles are driven into the ground, the upper ends of each row of positioning piles extend out of the ground, the upper ends of each row of positioning piles are connected with load-bearing beams, and the load-bearing beams are connected with the load-bearing beams; the two spandrel girders are distributed in parallel, and a rail is laid at the upper end of each spandrel girder in the length direction of the spandrel girder. A guide frame is hoisted to the rail, so that the guide frame is in sliding connection with the rail, the guide frame is provided with an upper layer of limiting pieces and a lower layer of limiting pieces, and the box-shaped steel sheet piles are in a vertical distribution state through the limiting pieces; and the box-shaped steel sheet piles are driven into the designed elevation positions one by one through the guide frame.

Description

Technical Field

[0001] The invention relates to the technical field of pile foundation construction, in particular to a construction method of box-shaped steel sheet piles. Background Art

[0002] The dock wall is anchored with steel sheet piles, which also serve as a waterstop. The steel sheet piles serve as both the retaining structure during construction and the permanent structure of the dock wall. Hammer-driven pile driving is typically used for the construction of the combined box-shaped steel sheet piles in the dock wall.

[0003] Chinese patent application number CN200510026093.6 discloses a method for constructing combined box-shaped steel sheet piles for dock walls, comprising the following steps: Step 1: Fixing a guide frame and inserting steel sheet piles within the guide frame. During the insertion, the steel sheet piles are positioned according to the guide frame to form a screen-like insertion method, and an interval reverse jump method is used when delivering the piles; Step 2: After the insertion of a group of steel sheet piles within the length of the guide frame is completed, the first pile of the next group is inserted close to the last steel sheet pile, so that part of the first pile remains on the ground to serve as a positioning pile for the next group of steel sheet piles, and the guide frame is removed; Step 3: Using the first pile as a limit pile, a second guide frame is fixed and the steel sheet piles are inserted within the second guide frame. This process is repeated in a continuous flow construction.

[0004] However, the above construction method requires fixing the guide frame, and then removing the guide frame by crane after the first set of steel sheet piles are inserted, and then fixing the guide frame of the second set, and implementing the second set of steel sheet pile insertion. As a result, each set of steel sheet piles can only be piled above the guide frame to form a screen, and then the piles are sent down. At this time, since each set of steel sheet piles are locked together, there are problems such as difficulty in sending piles and tearing of the locks.

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

[0006] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a construction method for box-shaped steel sheet piles, which has the advantages of enabling the guide frame to move when a row of box-shaped steel sheet piles need to be inserted, thereby enabling the box-shaped steel sheet piles to be driven into the required positions one by one, reducing the difficulty of pile delivery and the occurrence of lock tearing.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a construction method of box-shaped steel sheet piles, comprising the following steps: Step 1: Level the site, repair the road and lay the roadbed box or steel plate. After the work is completed, the equipment will be brought into 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 is connected to a load-bearing beam. The two load-bearing beams are distributed in parallel and the upper end of each load-bearing beam is used to lay the track along the length of the load-bearing beam. Step 3: Install the guide frame. Hoist the guide frame onto the track so that the guide frame is slidably connected to the track. The guide frame is provided with upper and lower limiters, which keep the box-shaped steel sheet piles in a vertical distribution state. Step 4: Pile foundation construction: Use the guide frame to drive the box-shaped steel sheet piles into the designed elevation position one by one.

[0008] By adopting the above technical solution, the arrangement of two rows of positioning piles facilitates the fixation of the load-bearing beam, and thus facilitates the installation of the track and the guide frame, and the arrangement of upper and lower layers of limiters facilitates the limitation of the position of the box-shaped steel sheet piles, and thus facilitates the vertical distribution of the box-shaped steel sheet piles, which is convenient for subsequent piling. Since the guide frame moves on the track, it can be moved after a box-shaped steel sheet pile is driven, and there is no need to install and disassemble the guide frame multiple times, so that when a row of box-shaped steel sheet piles needs to be inserted, the guide frame can be moved, and then the box-shaped steel sheet piles can be driven into the required position one by one, reducing the difficulty of delivering piles and the occurrence of lock tearing, thereby improving the piling efficiency.

[0009] Preferably, the specific method of inserting in step 4 is: First, drive the first box steel sheet pile, with the pile head parallel to the ground and 50±5 cm above the top limiter; Use the guide frame to keep the second box-shaped steel sheet pile vertical, and insert the locking mouth of the second box-shaped steel sheet pile into the locking mouth of the first box-shaped steel sheet pile, sink the pile to 1 meter above the uppermost limit piece of the guide frame, and move the guide frame away from the second box-shaped steel sheet pile until the upper limit piece exits the second box-shaped steel sheet pile. Continue to sink the second box-shaped steel sheet pile to above the lowermost limit piece of the guide frame. After the construction of the adjacent third box-shaped steel sheet pile is completed and flush with the pile head of the second box-shaped steel sheet pile, so that the lowermost limit piece does not exit the second box-shaped steel sheet pile, continue to sink the second box-shaped steel sheet pile to the designed elevation; After the construction of the fourth adjacent box-shaped steel sheet pile is completed and flush with the pile head of the third box-shaped steel sheet pile, so that the lowermost limiter does not exit the third box-shaped steel sheet pile, continue to sink the third box-shaped steel sheet pile to the designed elevation; Similarly, complete the construction of all the box-shaped steel sheet piles in a row between two tracks.

[0010] Preferably, the guide frame includes a trolley slidably connected to two tracks, and the upper end surface of the trolley is provided with two relatively distributed support frames, and the two support frames are gradually inclined and distributed in a direction close to each other starting from a position fixed to the trolley, the upper limit member is provided above the two support frames, and the lower limit member is provided on the upper end surface of the trolley; The walking trolley includes a U-shaped horizontal frame and a support plate arranged between opposite frame walls of the horizontal frame, wherein the opposite frame walls of the horizontal frame are respectively distributed along the length direction of the two tracks, and a structure for walking along the track is provided below the horizontal frame, and the two support frames are respectively arranged on the upper end surfaces of the two opposite frame walls of the horizontal frame; The upper limiting member and the lower limiting member both include a U-shaped limiting plate that is consistent with the opening direction of the horizontal frame, and the upper limiting plate is fixed on the support frame, and the lower limiting plate is fixed to the opposite frame wall of the horizontal frame through a plurality of connecting rods; The two relatively 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 by one up and down. The long arms of the upper and lower layers are located on the opposite sides of the two parallel surfaces of a box-shaped steel sheet pile and fit 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 relatively distributed long arms of the limiting plate of the lower layer is D1, and the length dimension of the two correspondingly distributed long arms of the limiting plate of the upper layer is D2. D1 is greater than D2: the width of two box-shaped steel sheet piles to three box-shaped steel sheet piles; Positioning pieces for positioning the box-shaped steel sheet piles are provided in both the upper and lower limiting plates.

[0011] Preferably, the positioning member includes an inclined surface and a placement groove provided on the short arms of the upper and lower limiting plates and cooperating with two adjacent outer walls and the locking opening of the box-shaped steel sheet pile. The placement groove is for the locking opening of the box-shaped steel sheet pile to be placed, 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 in contact with. When the first box-shaped steel sheet pile is driven, the long arms of the upper and lower limit plates are connected by a connecting plate, and 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 groove is the width of a box-shaped steel sheet pile.

[0012] Preferably, the upper ends of the two support frames are provided with U-shaped fixing plates distributed along the limiting plates, a long arm and a short arm of the limiting plates are respectively fixed on the upper surfaces of the fixing plates, 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, and the upper end surface of the short arm is provided with an electric cylinder 1 for pushing the long arm to slide; The positioning member includes extension rods that are both provided on two long arms and extend toward each other, and the end of the extension rod away from the long arm is provided with a positioning plate 1 that fits with the adjacent outer wall of the box-shaped steel sheet pile, and the short arm is provided with an electric cylinder 2 on the side facing the positioning plate 1, and the piston rod of the electric cylinder 2 is provided with a positioning plate 2 that is opposite to the positioning plate 1, and the positioning plate 2 is provided with a surface that fits with the outer wall of the box-shaped steel sheet pile on the side away from the positioning plate 1 and a clearance groove for the box-shaped steel sheet pile lock mouth to be placed, and the size of the clearance groove is larger than the size of the box-shaped steel sheet pile lock mouth; After the positioning piece positions a box-shaped steel sheet pile, the upper long arm extends to a position close to the locking opening of the adjacent box-shaped steel sheet pile.

[0013] Preferably, the above-mentioned positioning member is replaced by: the positioning member includes three figure-eight positioning plates each provided on two long arms and in contact with 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 outside 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, and the piston rod of the electric cylinder three is provided with a connecting plate connected to the second plate; After the positioning piece positions a box-shaped steel sheet pile, the upper long arm extends to a position close to the locking opening of the adjacent box-shaped steel sheet pile.

[0014] Preferably, a guardrail is provided around the periphery of the upper limiting plate, and the upper and lower limiting plates are connected by a plurality of vertical columns.

[0015] Preferably, the support frame is a plurality of inclined rods, and the horizontal frame is provided with a ladder connected to the upper limiting plate, and the ladder is distributed obliquely.

[0016] Preferably, a guide plate is provided on the short arm and is located on the side opposite to the two second plates, and the outer wall of the second plate is slidably connected to the guide plate.

[0017] Preferably, the positioning fit between the positioning piece and the outer wall of the box-shaped steel sheet pile is a clearance fit, and the clearance is 1 cm.

[0018] The beneficial effects of the present invention are as follows: the arrangement of two rows of positioning piles facilitates the fixation of the load-bearing beam, and thus facilitates the installation of the track and the guide frame, and the arrangement of upper and lower layers of limiting members facilitates the limitation of the position of the box-shaped steel sheet piles, and thus facilitates the vertical distribution of the box-shaped steel sheet piles, which is convenient for subsequent piling. Since the guide frame moves on the track, it can be moved after one box-shaped steel sheet pile is driven, and there is no need to install and disassemble the guide frame multiple times, so that when a row of box-shaped steel sheet piles needs to be inserted, the guide frame can be moved, and then the box-shaped steel sheet piles can be driven into the required position one by one, reducing the difficulty of delivering piles and the occurrence of lock tearing, thereby improving the piling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the structure of this embodiment; Figure 2 This is a schematic diagram of the structure of the load-bearing beam in this embodiment. Figure 3 This is a schematic structural diagram of the guide frame of this embodiment; Figure 4 This is a schematic diagram showing the structure of the upper limiting plate of this embodiment; Figure 5 This is a schematic diagram of the structure of two box-shaped steel sheet piles after being locked and connected in this embodiment; Figure 6 This is a structural diagram illustrating the box-type steel sheet pile insertion process of this embodiment; Figure 7 This is a schematic structural diagram of the positioning plate 2 in this embodiment; Figure 8 Schematic diagram of the structure of the positioning plate three in this embodiment.

[0021] Description of reference numerals: In the figure: 1. Load-bearing beam; 11. Track; 12. Guide frame; 13. Support frame; 14. Traveling trolley; 15. Limit plate; 151. Long arm; 152. Short arm; 153. Inclined surface; 154. Insertion slot; 155. Connecting plate; 16. Electric cylinder 1; 17. Extension rod; 171. Positioning plate 1; 172. Electric cylinder 2; 173. Positioning plate 2; 174. Make way slot; 18. Positioning plate 3; 181. First plate; 182. Second plate; 183. Guide plate; 2. Box-shaped steel sheet pile; 21. Locking mouth. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] A construction method for box-shaped steel sheet piles, such as Figure 1 He Ru Figure 2and Figure 3 The longitudinal section of each box-shaped steel sheet pile 2 is a hexagonal frame with symmetrical locking openings 21 at both ends, including the following steps: Step 1: Level the site, repair the road, and lay the roadbed box or steel plate. After the work is completed, equipment will be brought in; equipment such as cranes and vibratory hammers; 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 is connected to a load-bearing beam 1. The two load-bearing beams 1 are distributed in parallel and the upper end of each load-bearing beam 1 is laid along the length of the load-bearing beam 1. The positioning piles can be H-shaped steel or steel pipes, as long as they can be quickly driven into the ground to form a support for the load-bearing beam 1 and are easy to remove later. Step 3: Install the guide frame 12. Hoist the guide frame 12 onto the track 11 so that the guide frame 12 is slidably connected to the track 11. The guide frame 12 is provided with upper and lower limit members, which keep the box-shaped steel sheet piles 2 in a vertical distribution state. Step 4: pile foundation construction, the box-shaped steel sheet piles 2 are driven into the designed elevation position one by one through the guide frame 12.

[0024] The arrangement of two rows of positioning piles facilitates the fixation of the load-bearing beam 1, and further facilitates the installation of the track 11 and the guide frame 12. The upper and lower layers of limiters are arranged to facilitate the limitation of the position of the box-shaped steel sheet piles 2, and further facilitate the vertical distribution of the box-shaped steel sheet piles 2, which is convenient for subsequent piling. Since the guide frame 12 moves on the track 11, it can be moved after a box-shaped steel sheet pile 2 is driven, and there is no need to install and disassemble the guide frame 12 multiple times. When a row of box-shaped steel sheet piles 2 need to be inserted, the guide frame 12 can be moved, and the box-shaped steel sheet piles 2 can be driven into the required position one by one, reducing the difficulty of delivering piles and the occurrence of lock tearing, thereby improving the piling efficiency.

[0025] In addition, during the above process, the positioning piles, load-bearing beams and rails can be installed in a rotatable manner and forward all the way.

[0026] like Figure 4 and Figure 5 and Figure 6 , the specific method of entering in step 4: First, drive the first box-shaped steel sheet pile 2, with the pile head parallel to the ground and 50±5 cm above the top limiter; Use the guide frame 12 to keep the second box-shaped steel sheet pile 2 vertical, and insert the locking mouth 21 of the second box-shaped steel sheet pile 2 into the locking mouth 21 of the first box-shaped steel sheet pile 2, and sink the pile to 1 meter above the uppermost limit piece of the guide frame 12. Move the guide frame 12 away from the second box-shaped steel sheet pile 2 until the upper limit piece exits the second box-shaped steel sheet pile 2, and continue to sink the second box-shaped steel sheet pile 2 to above the lowermost limit piece of the guide frame 12; The guide frame 12 moves toward the second steel sheet pile 2 to adjust the position of the guide frame 12 so that the third box-shaped steel sheet pile 2 is correctly positioned and inserted. The third box-shaped steel sheet pile 2 is hoisted to one side of the second box-shaped steel sheet pile 2, and the locking mouth 21 of the third box-shaped steel sheet pile 2 is inserted into the locking mouth 21 of the second box-shaped steel sheet pile 2. The upper and lower limit pieces on the guide frame 12 limit the vertical position of the third box-shaped steel sheet pile 2. The third box-shaped steel sheet pile 2 is sunk to 1 meter above the uppermost limit piece of the guide frame 12. The guide frame 12 moves away from the third box-shaped steel sheet pile 2 until the upper limit piece exits the third box-shaped steel sheet pile 2. The third box-shaped steel sheet pile 2 is continued to be sunk to above the lowermost limit piece of the guide frame 12. After the third box-shaped steel sheet pile 2 is completed and flush with the pile head of the second box-shaped steel sheet pile 2, so that the lowermost limiter does not exit the second box-shaped steel sheet pile 2, continue to sink the second box-shaped steel sheet pile 2 to the designed elevation: sink the pile to 50±5 cm above the ground; After the construction of the fourth adjacent box-shaped steel sheet pile 2 is completed and the pile head is flush with the third box-shaped steel sheet pile 2, the lowermost limit piece is still limiting the third box-shaped steel sheet pile 2. At this time, continue to sink the third box-shaped steel sheet pile 2 to the designed elevation: sink the pile to 50±5 cm above the ground; The same process is repeated to complete the construction of all the box-shaped steel sheet piles 2 in a row between the two tracks 11 .

[0027] 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 intermittent time is short, which makes it easy to drive the pile into the ground, with high efficiency and the pile body is not easily damaged. Moreover, each pile is only associated with the previous one, which reduces the difficulty of sending piles, avoids damage to the pile head and tearing of the lock buckle, thereby ensuring that each pile can be driven into the ground smoothly and improving construction efficiency.

[0028] like Figure 4 and Figure 5 and Figure 3 The guide frame 12 includes a trolley 14 slidably connected to the two rails 11. The upper end surface of the trolley 14 is provided with two relatively distributed support frames 13. The two support frames 13 are gradually inclined toward each other from the position fixed with the trolley. The purpose is to facilitate the fixing of the upper limit member. The upper limit member is arranged above the two support frames 13, and the lower limit member is arranged on the upper end surface of the trolley 14. like Figure 4 and Figure 5 and Figure 3The walking trolley 14 includes a U-shaped horizontal frame and a support plate arranged between the opposite frame walls of the horizontal frame. The support plate can be provided with several to enhance the strength of the horizontal frame. The opposite frame walls of the horizontal frame are respectively distributed along the length direction of the two rails 11. A structure that travels along the rails 11 is provided below the horizontal frame. Two support frames 13 are respectively provided on the upper end surfaces of the two opposite frame walls of the horizontal frame. like Figure 4 and Figure 5 and Figure 3 The structure for moving along the track 11 provided at the bottom of the horizontal frame can be an existing structure. For example, a motor is provided on the support plate, and four rollers that roll on the track 11 are provided at the bottom of the horizontal frame. The four rollers are opposite to each other in pairs and are connected 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 provided with mutually meshing gears, so that the motor can drive one of the rotating shafts to rotate, thereby driving the horizontal frame to move on the track 11; etc., as long as the horizontal frame can automatically move on the track 11, and the position of the rollers is far away from the lower limit member. In addition, a brake is provided at the bottom of the horizontal frame to stop the rotating shaft from rotating. The brake stops the horizontal frame on the track 11. The above-mentioned structures for moving and braking the horizontal frame can adopt existing structures, as long as they are located on the side of the lower limit member.

[0029] like Figure 4 and Figure 5 and Figure 6 , the upper limiting member and the lower limiting member both include a U-shaped limiting plate 15 consistent with the opening direction of the horizontal frame, and 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 through a plurality of connecting rods; like Figure 4 and Figure 5 and Figure 6 , the two relatively 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 arm 152. The long arms 151 and short arms 152 of the upper and lower layers are distributed one by one up and down. The long arms 151 of the upper and lower layers are located on the opposite sides of the two parallel surfaces of a box-shaped steel sheet pile 2 and fit with the box-shaped steel sheet pile 2. The central axes of the upper and lower limiting plates 15 are located on the same vertical plane, and the vertical plane is where the row of box-shaped steel sheet piles 2 are inserted. The length dimension of the two relatively 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, and D1 is greater than D2: the width of two box-shaped steel sheet piles 2 to three box-shaped steel sheet piles 2; Positioning pieces for positioning the box-shaped steel sheet piles 2 are provided in both the upper and lower limiting plates 15 .

[0030] like Figure 4 and Figure 5 and Figure 6 The positioning member includes an inclined surface 153 and an insertion groove 154 provided on the short arms 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 attached; like Figure 4 and Figure 5 and Figure 6 When the first box-shaped steel 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 surface of the long arm 151 and are detachably connected to the long arm 151 through a latch. The gap between one side surface of the connecting plate 155 and the bottom of the slot 154 is the width of a box-shaped steel sheet pile 2.

[0031] like Figure 4 and Figure 5 and Figure 6 , working principle of guide frame 12: Step 1: When driving the first box-shaped steel sheet pile 2, first install the connecting plates 155 on the upper and lower limiting plates 15 on the limiting plates 15 through the latches, and then lift the first box-shaped steel sheet pile 2 between the connecting plates 155 and the limiting plates 15. At this time, the upper and lower connecting plates 155 and the limiting plates 15 act as vertical limiters for the first box-shaped steel sheet pile 2. Step 2: After the first box-shaped steel sheet pile 2 is driven until the pile head is parallel to the ground and 50 cm above the upper limit plate 15, the connecting plate 155 is removed; Step 3: Move the guide frame 12 away from the first box-shaped steel sheet pile 2 so that the upper limiting plate 15 withdraws from the first box-shaped steel sheet pile 2, lift the second box-shaped steel sheet pile 2 to one side of the first box-shaped steel sheet pile 2, and insert one locking mouth 21 of the second box-shaped steel sheet pile 2 into the locking mouth 21 of the first box-shaped steel sheet pile 2, and the other locking mouth 21 of the second box-shaped steel sheet pile 2 into the placement groove 154. At this time, the guide frame 12 is in a braking state, and the second box-shaped steel sheet pile 2 is restricted in left and right positions by the inclined surface 153, the placement groove 154, and the locking mouth 21 of the first box-shaped steel sheet pile 2, and is restricted in front and back positions by the two long arms 151 of the limiting plate 15. The left and right positions are positions distributed along the length direction of the track 11, and the front and back positions are positions perpendicular to the length direction of the track 11. Step 4: After the second box-shaped steel sheet pile 2 is positioned, the pile is sunk to 1 meter above the uppermost limit piece of the guide frame 12, and the guide frame 12 moves away from the second box-shaped steel sheet pile 2 until the upper limit plate 15 exits the second box-shaped steel sheet pile 2, and the second box-shaped steel sheet pile 2 is continued to be sunk to above the lowermost limit plate 15 of the guide frame 12. At this time, the distance moved by the guide frame 12 is to facilitate the downward sinking of the pile by the vibratory hammer; the limit plate 15 and the horizontal frame are both U-shaped to facilitate the removal of the box-shaped steel sheet pile 2; Step 5: The guide frame 12 moves toward the second steel sheet pile 2. The purpose is to adjust the position of the guide frame 12 so that the third box-shaped steel sheet pile 2 is in the correct position, insert the third box-shaped steel sheet pile 2, lift the third box-shaped steel sheet pile 2 to one side of the second box-shaped steel sheet pile 2, and gradually lower the third box-shaped steel sheet pile 2 until the locking mouth 21 of the third box-shaped steel sheet pile 2 is inserted into the locking mouth 21 of the second box-shaped steel sheet pile 2, and move the guide frame 12 toward the second box-shaped steel sheet pile 2 so that the third The other lock 21 of the box-shaped steel sheet pile 2 enters the placement slot 154, and then the brake is applied. The upper and lower limit members on the guide frame 12 limit the vertical position of the third box-shaped steel sheet pile 2, and the third box-shaped steel sheet pile 2 is sunk to 1 meter above the uppermost limit member of the guide frame 12. The guide frame 12 moves away from the third box-shaped steel sheet pile 2 until the upper limit plate 15 exits the third box-shaped steel sheet pile 2, and the third box-shaped steel sheet pile 2 is further sunk to above the lowermost limit member of the guide frame 12. Step 6: After the third box-shaped steel sheet pile 2 is completed and flush with the pile head of the second box-shaped steel sheet pile 2, the guide frame 12 moves so that the lowermost limit plate 15 still does not exit the second box-shaped steel sheet pile 2. At this time, the second box-shaped steel sheet pile 2 is continued to be sunk to the designed elevation; the designed elevation is to sink the pile until the pile head is 50±5 cm above the ground; Step 7: After the construction of the adjacent fourth box-shaped steel sheet pile 2 is completed and flush with the pile head of the third box-shaped steel sheet pile 2, the lowermost limit piece has not exited the third box-shaped steel sheet pile 2. At this time, continue to sink the third box-shaped steel sheet pile 2 to the design elevation.

[0032] The construction of the fourth box-shaped steel sheet pile 2 is the same as that of the third box-shaped steel sheet pile 2, and so on, and the sinking of each box-shaped steel sheet pile 2 is gradually completed. The connection of the lock mouth 21 of each adjacent box-shaped steel sheet pile 2 needs to be manually assisted.

[0033] In order to enable the box-shaped steel sheet pile 2 to be automatically placed in the positioning piece, the following two structures are designed: like Figure 7Alternatively, the upper ends of the two support frames 13 are provided with U-shaped fixed plates (not shown) distributed along the limiting plates 15, and a long arm 151 and a short arm 152 of the limiting plates 15 are respectively fixed on the end faces of the fixed plates, and the other long wall is slidably connected to the short arm 152 of the limiting plates 15, and the sliding direction is along the length direction of the short arm 152, and the bottom of the moving long arm 151 also slides on the end face of the fixed plate, and the fixed plate is located at the bottom of the limiting plate 15, and when the two long arms 151 of the limiting plate 15 are in contact with the box-shaped steel sheet pile 2 When the two side walls of the box-shaped steel sheet pile 2 are in contact, the fixed plate is not in contact with the side walls of the box-shaped steel sheet pile 2. The upper end surface of the short arm 152 is provided with an electric cylinder 16 for pushing the long arm 151 to slide; the piston rod of the electric cylinder 16 is provided with an L-shaped driving rod, and the end of the driving rod away from the electric cylinder 16 is fixedly connected to the movable long arm 151. The electric cylinder 16 is convenient for driving 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 box-shaped steel sheet pile 2 to be placed between the two long arms 151.

[0034] like Figure 7 The positioning member includes an extension rod 17 which is provided on the two long arms 151 and extends toward each other. The end of the extension rod 17 away from the long arm 151 is provided with a positioning plate 171 which is in contact with the adjacent outer wall of the box-shaped steel sheet pile 2. The short arm 152 is provided with an electric cylinder 172 on the side facing the positioning plate 171. The piston rod of the electric cylinder 172 is provided with a positioning plate 173 which is opposite to the positioning plate 171. The positioning plate 173 is provided with a surface which is in contact with the outer wall of the box-shaped steel sheet pile 2 on the side away from the positioning plate 171, and a clearance groove 174 for the lock mouth 21 of the box-shaped steel sheet pile 2 to be placed. The size of the clearance groove 174 is larger than the size of the lock mouth 21 of the box-shaped steel sheet pile 2. like Figure 7 The above-mentioned positioning of the box-shaped steel sheet pile 2 is based on the surfaces and the clearance grooves 174 on the two positioning plates 1 171 and 173 .

[0035] like Figure 7 When the box-shaped steel sheet pile 2 is lowered, the electric cylinder 16 drives the long arm 151 to move, so that the distance between the two long arms 151 increases, and the electric cylinder 2 172 also drives the positioning plate 2 173 away from the positioning plate 1 171, so that the lower end of the box-shaped steel sheet pile 2 is lowered between the positioning plate 1 171 and the positioning plate 2 173. Then the electric cylinder 16 reduces the distance between the two long arms 151, so that the two positioning plates 1 171 move to the position for positioning the box-shaped steel sheet pile 2, and the electric cylinder 2 172 causes the positioning plate 2 173 to generate a thrust toward the positioning plate 1 171 on the box-shaped steel sheet pile 2, thereby facilitating the box-shaped steel sheet pile 2 to be limited between the positioning plate 1 171 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 1 171 and the outer wall of the box-shaped steel sheet pile 2, and the outer wall of the box-shaped steel sheet pile 2 is not pressed tightly. like Figure 7 When the third box-shaped steel sheet pile 2 is to be used, continue to lower the box-shaped steel sheet pile 2 so that the locking mouth 21 of the box-shaped steel sheet pile 2 is opposite to the previous box-shaped steel sheet pile 2 and is convenient for connection with the locking mouth 21. At this time, there is only a limiting plate 15 on the lower layer, and the pile is sunk to 1 meter above the uppermost limiting part of the guide frame 12.

[0036] like Figure 7 When the positioning piece positions a box-shaped steel sheet pile 2, the upper long arm 151 extends to a position close to the locking mouth 21 of the adjacent box-shaped steel sheet pile 2, so that the guide frame 12 only needs to move slightly larger than the position of a box-shaped steel sheet pile 2 to move the box-shaped steel sheet pile 2 out of the upper long arm 151.

[0037] like Figure 8 Alternatively, the positioning members can be replaced with three splayed positioning plates 18, each mounted on one of the two long arms 151 and aligned with 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 positioned 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, while the other is slidably connected to the short arm 152. The positioning plate 18 is fixed to the second plate 182. An electric cylinder 3 (not shown) is mounted below the two first plates 181 on the short arm 152. The piston rod of the electric cylinder 3 is equipped with a connecting plate connected to the second plate 182, allowing the electric cylinder 3 to drive the second plate 182 to slide on the first plate 181. A guide plate 183 is mounted on the short arm 152, 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.

[0038] like Figure 8 When the positioning piece positions a box-shaped steel sheet pile 2, the upper long arm 151 extends to a position close to the locking opening 21 of the adjacent box-shaped steel sheet pile 2.

[0039] like Figure 8 When the box-shaped steel sheet pile 2 is lowered, the electric cylinder 16 drives the long arm 151 to move, so that the distance between the two long arms 151 increases, and the distance between the two positioning plates 3 18 also gradually increases, which facilitates the lower end of the box-shaped steel sheet pile 2 to be lowered between the two positioning plates 3 18. Then the electric cylinder 16 reduces the distance between the two long arms 151, so that the two positioning plates 3 18 move to the position for positioning the box-shaped steel sheet pile 2, which facilitates the box-shaped steel sheet pile 2 to be limited between the two positioning plates 3 18. At this time, there is a gap of about 1 cm between the two positioning plates 3 18 and the outer wall of the box-shaped steel sheet pile 2, and the outer wall of the box-shaped steel sheet pile 2 is not pressed tightly.

[0040] like Figure 8When the third box-shaped steel sheet pile 2 is to be used, continue to lower the box-shaped steel sheet pile 2 so that the locking mouth 21 of the box-shaped steel sheet pile 2 is opposite to the previous box-shaped steel sheet pile 2 and is convenient for connection with the locking mouth 21. At this time, there is only a limiting plate 15 on the lower layer, and the pile is sunk to 1 meter above the uppermost limiting part of the guide frame 12.

[0041] like Figure 8 When the guide frame 12 moves only slightly larger than the position of a box-shaped steel sheet pile 2, the box-shaped steel sheet pile 2 can be moved out of the upper long arm 151. In order to facilitate the positioning of the next box-shaped steel sheet pile 2, the previous positioning still requires the guide frame 12 to be moved toward the previous box-shaped steel sheet pile 2. However, when this positioning is adopted, the guide frame 12 is no longer needed. Only the electric cylinder three is needed to drive the second plate 182 to slide on the first plate 181, thereby adjusting the position of the two positioning threes, thereby compensating for the movement of the guide frame 12.

[0042] Balls can be embedded in the above-mentioned positioning plate 1 171, positioning plate 2 173, positioning plate 3 18 and inclined surface 153 to reduce the error of the outer surface of the box-shaped steel sheet pile 2 and the friction with the positioning plate 1 171, positioning plate 2 173, positioning plate 3 18 and inclined surface 153 when the box-shaped steel sheet pile 2 is below. Further, it can be optimized to provide movable grooves on the positioning plate 1 171, positioning plate 2 173, positioning plate 3 18 and inclined surface 153, and the bottom of the movable groove is provided with a compression spring that allows the ball to partially move out of the movable groove. At this time, the compression spring causes the ball to conflict with the box-shaped steel sheet pile 2.

[0043] The periphery of the upper limit plate 15 is provided with a guardrail, and the upper and lower limit plates 15 are connected by a plurality of vertical columns. The support frame is a plurality of oblique rods, and a ladder connected to the upper limit plate 15 is provided on the horizontal frame, and the ladder is obliquely distributed.

[0044] The positioning fit between the positioning piece and the outer wall of the box-shaped steel sheet pile 2 is a clearance fit, with a clearance of 1 cm.

[0045] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A construction method for box-shaped steel sheet piles, characterized in that: The following steps are involved: Step 1: Level the site, repair the road and lay the roadbed box or steel plate. After the work is completed, the equipment will be brought into the site; Step 2: Track 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 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 the upper end of each load-bearing beam (1) is laid along the length direction of the load-bearing beam (1) on the track (11); 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 layers of limiting members, and the limiting members enable the box-shaped steel sheet piles (2) to be in a vertically distributed state. Step 4, pile foundation construction, the box-shaped steel sheet piles (2) are driven into the designed elevation position one by one through the guide frame (12).

2. The construction method of a box-shaped steel sheet pile according to claim 1, characterized in that: Specific input method 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 limiter; The second box-shaped steel sheet pile (2) is kept vertical by the guide frame (12), 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 sunk to 1 meter above the uppermost limit piece of the guide frame (12). The guide frame (12) moves away from the second box-shaped steel sheet pile (2) until the upper limit piece exits the second box-shaped steel sheet pile (2). The second box-shaped steel sheet pile (2) is further sunk to above the lowermost limit piece of the guide frame (12). After the construction of the adjacent third box-shaped steel sheet pile (2) is completed and flush with the pile head of the second box-shaped steel sheet pile (2), the lowermost limit piece does not exit the second box-shaped steel sheet pile (2). At this time, the second box-shaped steel sheet pile (2) is further sunk to the design elevation. After the construction of the adjacent fourth box-shaped steel sheet pile (2) is completed and flush with the pile head of the third box-shaped steel sheet pile (2), so that the lowermost limit piece does not exit the third box-shaped steel sheet pile (2), the third box-shaped steel sheet pile (2) is continued to be sunk to the design elevation; The same process is repeated to complete the construction of all the box-shaped steel sheet piles (2) in a row between the two tracks (11).

3. The construction method of a box-shaped steel sheet pile according to claim 1, characterized in that: The guide frame (12) includes a trolley (14) slidably connected to two rails (11), and the upper end surface of the trolley (14) is provided with two support frames (13) distributed opposite to each other, and the two support frames (13) are gradually inclined and distributed in a direction close to each other starting from a position fixed with the trolley, and the upper limit member is provided above the two support frames (13), and the lower limit member is provided on the upper end surface of the trolley (14); The walking trolley (14) includes a horizontal frame distributed in a U-shape and a support plate arranged between opposite frame walls of the horizontal frame, the opposite frame walls of the horizontal frame are respectively distributed along the length direction of the two tracks (11), a structure for walking along the track (11) is provided below the horizontal frame, and the two support frames (13) are respectively arranged on the upper end surfaces of the two opposite frame walls of the horizontal frame; The upper limiting member and the lower limiting member both include a U-shaped limiting plate (15) that is consistent with the opening direction of the horizontal frame, and the upper limiting plate (15) is fixed on the support frame (13), and the lower limiting plate (15) is fixed on the opposite frame wall of the horizontal frame through a plurality of 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 by one up and down. The long arms (151) of the upper and lower layers are located on the opposite sides of two mutually parallel surfaces of a box-shaped steel sheet pile (2) and fit with the box-shaped steel sheet pile (2). The central axes of the upper and lower limiting plates (15) are located on the same vertical plane. The length dimension of the two oppositely distributed long arms (151) of the limiting plate (15) of the lower layer is D1, and the length dimension of the two correspondingly distributed long arms (151) of the limiting plate (15) of the upper layer is D2. D1 is greater than D2: the width of two box-shaped steel sheet piles (2) to three box-shaped steel sheet piles (2); Positioning pieces for positioning the box-shaped steel sheet piles (2) are provided in both the upper and lower limiting plates (15).

4. A construction method for box-shaped steel sheet piles according to claim 3, characterized in that: The positioning member comprises an inclined surface (153) and an insertion groove (154) provided on the short arms (152) of the upper and lower limiting plates (15) and cooperating with two adjacent outer walls and the locking opening (21) of the box-shaped steel sheet pile (2). The insertion groove (154) is for inserting the locking opening (21) of the box-shaped steel sheet pile (2), and the inclined surface (153) is for fitting with two adjacent outer walls on both sides of the locking opening (21) of the box-shaped steel sheet pile (2). When the first box-shaped steel sheet pile (2) is driven, the long arms (151) of the upper and lower limit plates (15) are connected by a connecting plate (155), and both ends of the connecting plate (155) are detachably connected to the long arms (151) by latches. The gap between one side of the connecting plate (155) and the bottom of the slot (154) is the width of one box-shaped steel sheet pile (2).

5. The construction method of a box-shaped steel sheet pile according to claim 3, 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); a long arm (151) and a short arm (152) of the limiting plate (15) are respectively fixed on the upper end 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 end surface of the short arm (152) is provided with an electric cylinder (16) for pushing the long arm (151) to slide; The positioning member includes an extension rod (17) which is arranged on two long arms (151) and extends toward each other, and the end of the extension rod (17) away from the long arm (151) is provided with a positioning plate (171) which is in contact with the adjacent outer wall of the box-shaped steel sheet pile (2), and the short arm (152) is provided with an electric cylinder (172) on the side facing the positioning plate (171), and the piston rod of the electric cylinder (172) is provided with a positioning plate (173) which is opposite to the positioning plate (171), and the positioning plate (173) is provided with a surface which is in contact with the outer wall of the box-shaped steel sheet pile (2) away from the positioning plate (171) and a clearance groove (174) for the lock mouth (21) of the box-shaped steel sheet pile (2) to be placed, and the size of the clearance groove (174) is larger than the size of the lock mouth (21) of the box-shaped steel sheet pile (2); After the positioning member positions a box-shaped steel sheet pile (2), the upper long arm (151) extends to a position close to the locking opening (21) of the adjacent box-shaped steel sheet pile (2).

6. A construction method for box-shaped steel sheet piles according to claim 5, characterized in that: The above-mentioned positioning member is replaced by: the positioning member includes an eight-shaped positioning plate three (18) which is arranged on two long arms (151) and fits with the outer wall of the box-shaped steel sheet pile (2), each of the long arms (151) includes a first plate (181) and a second plate (182), the second plate (182) is sleeved outside the first plate (181) and is 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), and the piston rod of the electric cylinder three is provided with a connecting plate connected to the second plate (182); After the positioning member positions a box-shaped steel sheet pile (2), the upper long arm (151) extends to a position close to the locking opening (21) of the adjacent box-shaped steel sheet pile (2).

7. The construction method of a box-shaped steel sheet pile according to claim 3, characterized in that: A guardrail is provided around the upper limiting plate (15), and the upper and lower limiting plates (15) are connected by a plurality of vertical columns.

8. The construction method of a box-shaped steel sheet pile according to claim 7, characterized in that: The support frame (13) is a plurality of inclined rods, and a ladder connected to the upper limit plate (15) is provided on the horizontal frame, and the ladder is distributed obliquely.

9. The construction method of a box-shaped steel sheet pile according to claim 6, 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).

10. The construction method of a box-shaped steel sheet pile according to claim 3, characterized in that: The positioning fit between the positioning piece and the outer wall of the box-shaped steel sheet pile (2) is a clearance fit, with the clearance being 1 cm.

Images