Combined steel sheet pile

Abstract

The utility model discloses a combined steel sheet pile, including a plurality of steel sheet pile unit that ties in order, steel sheet pile unit includes the female board and the sub -board that tie each other, still include the upper bracing beam structure of support between the steel sheet pile unit upper end, and the top bar structure of support in the lower side position of steel sheet pile unit, and top bar structure includes a plurality of top bar through the hydraulic cylinder and pushes, and top bar fixedly connected with hinged arm frame, and hinged arm frame is hinged in upper bracing beam structure, and upper bracing beam structure and top bar structure form upper and lower double -deck support structure. The above structure discloses a novel cofferdam structure formed by steel sheet pile support, through double -deck support, effectively solved the rainstorm, mud, flood and the damage of the sealing property of steel sheet pile.

Description

Technical Field

[0001] This utility model belongs to the field of sheet pile technology, and particularly relates to a composite sheet pile. Background Technology

[0002] In construction, steel sheet piles are often combined to form cofferdam structures, creating a relatively enclosed environment within the construction area. In practice, to ensure waterproofing, the sheet piles are interlocked using a slotted structure. During construction, a mother sheet is driven into the ground, and then slots on the daughter sheet engage with those on the mother sheet to form an interlocking structure. This interlocking structure effectively seals the cofferdam, preventing mud and water from entering the cofferdam environment.

[0003] However, some sheet piles are driven into the ground and some are exposed on the ground. Therefore, if the protruding part of the sheet pile on the ground is under too much pressure, such as when heavy rain causes mud and water to squeeze the sheet pile, it will not only easily cause deformation of the sheet pile, but the deformation will also reduce the sealing performance. As a result, a large amount of mud and water will leak from the gaps between the sheet piles into the cofferdam structure.

[0004] Therefore, if the protruding parts of the sheet piles cannot be adequately supported to resist the pressure of mud and flood, it will not only seriously affect construction safety, but also cause a large amount of mud and water to enter the cofferdam area, making the subsequent dredging and cleaning work very large. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide a combined steel sheet pile.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A composite sheet pile includes several sheet pile units that are interlocked in sequence. Each sheet pile unit includes a mother plate and a daughter plate that are interlocked with each other, and also includes an upper support beam structure that supports the upper ends of the sheet pile units. And a top bar structure supporting the lower side of the sheet pile unit, the top bar structure includes several top bars pushed by hydraulic cylinders, the top bars are fixedly connected to a hinged arm frame, the hinged arm frame is hinged to the upper support beam structure; The upper support beam structure and the top bar structure form a double-layer support structure.

[0007] Preferably, the upper support beam structure includes horizontal beams spaced apart on both sides and longitudinal beams respectively connected and installed at both ends of the horizontal beams; The crossbeams and longitudinal beams are assembled and connected by a detachable connection structure.

[0008] Preferably, the detachable connection structure includes a mother plate welded to the end of the crossbeam, and a daughter plate welded to the side wall of the longitudinal beam to mate with the mother plate. The mother plate and the daughter plate are fastened together by a number of tie rods.

[0009] Preferably, the upper support beam structure further includes a fork beam structure supported between the crossbeam and the longitudinal beam.

[0010] Preferably, the fork beam structure includes a fork beam with four diagonally arranged connecting ends. Vertically arranged connecting beams are welded to the connecting ends. Mounting seats are welded to both ends of the connecting beams, and the mounting seats on both sides are fastened to the cross beam and the longitudinal beam by bolts.

[0011] Preferably, a support beam is welded to the bottom center of the fork beam, and four hydraulic cylinders that extend and retract in different directions are installed on the support beam. The pushing end of the hydraulic cylinder is detachably equipped with a push rod. The top rod is hinged to the hinged arm frame, which is hinged to the fork beam.

[0012] Preferably, a rod shaft for a hinged arm is welded onto the fork beam; A fixed hinge shaft is welded onto the hinge arm frame, and a hinge sleeve that is hinged to the fixed hinge shaft is welded onto the top rod.

[0013] Preferably, a sleeve steel is welded to the inner wall of the mother plate; the crossbeam and the longitudinal beam pass through the sleeve steel respectively; The crossbeams and longitudinal beams are fastened to the channel steel with bolts.

[0014] Preferably, the crossbeam and longitudinal beam are H-shaped steel beams.

[0015] This utility model has the following beneficial effects: 1. Double-layer support is achieved by installing a support beam structure and a top rod structure on the elevated portion of the steel sheet piles above ground. Under double-layer support, the steel sheet pile structure is supported from the inside, maintaining structural stability and preventing deformation even under strong mudslide and flood load pressure, thus maintaining its airtightness.

[0016] 2. Welding of the channel steel: During installation, operators only need to hoist the crossbeams and longitudinal beams into the channel steel. Supported by the channel steel, a winch is used to pull the crossbeams or longitudinal beams through each channel, and then the bolts are tightened. This completes the initial installation of the crossbeams and longitudinal beams. This method significantly reduces the labor intensity of installing the support beam structure.

[0017] 3. The forked beam structure provides support for the rectangular structure at its diagonal positions. The forked beams transfer the supporting force to the cofferdam structure. The diagonal positions of the rectangular cofferdam structure (formed by steel sheet pile units) are also supported by the forked beams, further ensuring the stability of the cofferdam structure. The structural stability of the cofferdam structure, in turn, ensures the structural stability of each steel sheet pile unit that makes up the cofferdam structure. Therefore, when facing situations where the mud and flood are high and the pressure load on the steel sheet pile cofferdam structure is large, this support structure plays a role in stabilizing, resisting pressure, preventing deformation, and preventing leakage.

[0018] 4. In situations involving mudslides or significant water level rises above ground level, the hydraulic cylinder is activated. This cylinder drives the plunger rod to push the jack rod, which, hinged to a fixed hinge shaft via a hinge sleeve, rotates and rotates between the sheet pile units supporting the affected side. This provides hydraulic support from the lower end, further enhancing the stability of the sheet pile structure and preventing leakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the steel sheet pile unit in an embodiment of the present invention; Figure 3 This is a schematic diagram of the upper support beam structure in an embodiment of this utility model; Figure 4 This is a schematic diagram of the top rod structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the planar structure in an embodiment of the present utility model; Figure 6 This is an embodiment of the present utility model. Figure 1 A structural diagram from another perspective.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model. Example 1

[0025] like Figure 1-6 As shown, a composite sheet pile structure forms a cofferdam structure similar to existing sheet pile structures. It includes several sequentially interlocked sheet pile units 1, which together form a rectangular cofferdam structure. Similar to existing sheet pile structural units, each sheet pile unit 1 includes an interlocking mother plate 11 and a daughter plate 12 (each daughter plate has interlocking grooves).

[0026] During construction, sheet piles (letter sheets) are driven into the ground one by one, leaving a certain length above ground. Because the ground length is hollow, if heavy rain causes mud and water levels to rise, the pressure on the above-ground portion of the sheet piles will be enormous. Even if the sheet piles are interlocked together, they still cannot withstand the huge pressure, leading to deformation and reduced sealing of the interlocks. This results in a large amount of mud and water leaking into the cofferdam area, which not only seriously affects safety but also makes subsequent silt removal operations very difficult.

[0027] Therefore, it also includes an upper support beam structure 2 supporting the upper ends of the sheet pile units 1; and a top rod structure 3 supporting the lower side of the sheet pile units 1. The top rod structure 3 includes several top rods 32 pushed by hydraulic cylinders 33 (in this embodiment, 10-15m long steel rods are used, and the width of the supporting cofferdam sheet pile structure is at least two-thirds of the length). The top rods 32 are fixedly connected to a hinged arm frame 321, which is hinged to the upper support beam structure 2. The upper support beam structure 2 and the top rod structure 32 form an upper and lower double-layer support structure.

[0028] Double-layer support is achieved by installing a support beam structure 2 and a top rod structure 3 on the elevated portion of the steel sheet piles above ground. Under this double-layer support, the steel sheet pile structure is internally supported, maintaining structural stability and preventing deformation even under strong mudslide and flood load pressures, thus preserving its airtightness. Example 2

[0029] like Figure 1-6 As shown, in this embodiment, based on the structure of embodiment 1, the upper support beam structure 2 includes horizontal beams 21 spaced apart on the left and right sides and longitudinal beams 22 (spaced apart front and back) respectively connected to the ends of the horizontal beams 21; the horizontal beams 21 and the longitudinal beams 22 are assembled and connected by a detachable connection structure 23.

[0030] Specifically, the detachable connection structure 23 includes a mother plate 232 at the end of the welded crossbeam 21 (the mother plate is welded to both the front and rear ends respectively), and correspondingly, a daughter plate 231 that mates with the mother plate 232 is welded to the side wall of the longitudinal beam 22. The mother plate and the daughter plate are fastened together by a number of tie rods 233.

[0031] In actual operation, the longitudinal beams 22 and the transverse beams 21 are H-shaped steel beams, which are therefore very heavy. During installation, in order to reduce the difficulty of installing the sheet pile unit 1 and increase the support strength, a sleeve steel 111 (a rectangular frame beam, fixed by welding) is welded to the inner wall of the mother plate of each sheet pile unit 1. The transverse beams 21 and the longitudinal beams 22 pass through the sleeve steel 111 respectively. At the same time, the transverse beams 21 and the longitudinal beams 22 are fastened to the sleeve steel 111 by bolts.

[0032] During installation, operators need to hoist the crossbeams 21 and longitudinal beams 22 into the channel steel 111. With the support of the channel steel 111, a winch is used to pull the crossbeams 21 or longitudinal beams 22 through each channel steel 111, and then the bolts are tightened. This completes the initial installation of the crossbeams 21 and longitudinal beams 22.

[0033] Subsequently, the horizontal and vertical beams 22 are connected by the aforementioned detachable connection structure 23 to complete the rectangular beam support structure that cooperates with the cofferdam structure.

[0034] Meanwhile, in order to further increase the compressive strength, the above-mentioned upper support beam structure 2 also includes a fork beam structure supported between the horizontal beam 21 and the longitudinal beam 22.

[0035] The fork beam structure includes a fork beam 24 (forming an X-shaped structure), which has four diagonally arranged connecting ends. Vertically arranged connecting beams 241 are welded to the connecting ends. Mounting seats are welded to both ends of the connecting beams 241, and the mounting seats on both sides are fastened to the cross beams 21 and the longitudinal beams 22 by bolts.

[0036] This structural method enables the diagonal support beams of the rectangular structure to be supported by forked beams 24. The forked beams 24 transfer the supporting force to the cofferdam structure. The diagonal positions of the rectangular cofferdam structure (formed by steel sheet pile units 1) are also supported by the forked beams 24, further ensuring the stability of the cofferdam structure. The structural stability of the cofferdam structure ensures the structural stability of each steel sheet pile unit 1 that makes up the cofferdam structure. Therefore, when facing situations where the height of the mud and flood is large and the pressure load on the steel sheet pile cofferdam structure is large, this support structure plays a role in stabilizing, resisting pressure, preventing deformation and leakage. Example 3

[0037] like Figure 1-6 As shown, in this embodiment, based on the structure of embodiment 2, the above-mentioned upper beam structure serves as the main support, supporting the upper part of the sheet pile. Since the sheet pile is a certain height above the ground, if the lower part (closer to the ground) of the sheet pile is not supported during actual operation, strong pressure water and mud can easily squeeze the sheet pile from the space between the sheet pile and the ground, causing deformation and leakage.

[0038] Therefore, based on the technical problems encountered in actual engineering construction, this utility model adopts a double-layer support method to strengthen the structural stability.

[0039] Specifically, a support beam 34 is welded to the bottom center of the fork beam 24. Four hydraulic cylinders 33 that extend and retract in different directions are installed on the support beam 34 (i.e., one hydraulic cylinder 33 is fixedly installed on each of the front, rear, left, and right side walls). The pushing end (plunger rod) of the hydraulic cylinder 33 is detachably installed with a push rod 331 through a connecting flange. The push rod 331 is hinged to the hinge arm frame 321 (the hinge arm frame 321 is a pair of steel frames welded to the push rod 32, with a hinge interface at the upper end of the steel frame). The hinge arm frame 321 is hinged to the fork beam 24 (correspondingly, a rod shaft 31 for hinged hinge arm frame 321 is welded to the fork beam 24 and passes through the hinge interface).

[0040] Meanwhile, a fixed hinge shaft is welded onto the hinge arm 321, and a hinge sleeve that is hinged to the fixed hinge shaft is welded onto the top rod 331.

[0041] During operation, in situations involving mud and water levels significantly higher than the ground, hydraulic cylinder 33 is activated. Hydraulic cylinder 33 drives the plunger rod to push the top rod 331. Since the top rod 331 is hinged to a fixed hinge shaft via a hinge sleeve, it pushes the top rod 32 to rotate between the sheet pile units 1 on the affected side. This achieves hydraulic support from the lower end (whereas a double-layered steel beam structure would have too high a gravity load and require a large amount of work, and the sheet piles near the ground experience slightly less water pressure, hydraulic support is used instead).

[0042] Because the hinge interface on the hinge sleeve is larger than the diameter of the fixed hinge shaft (therefore it has a certain degree of displacement freedom with the fixed pin shaft), the hydraulic cylinder 33 can push the top rod 32 to support it smoothly. The design of the hinge interface on the hinge sleeve being larger than the diameter of the fixed hinge shaft not only makes it easier for the hydraulic cylinder 33 to push, but also prevents the hinge position from rusting and becoming difficult to push). Example 4

[0043] like Figure 1-6 As shown, in this embodiment, based on the structure of embodiment 3, the hydraulic cylinder 33 is a conventional hydraulic cylinder 33 disclosed in the prior art, and its cylinder barrel is fixedly mounted on the support beam 34 through a mounting seat. Specifically, the driving force of the hydraulic cylinder 33 is matched with different models of hydraulic cylinder 33 according to the size of the cofferdam structure in the actual project. For example, for a larger cofferdam structure, the matching top rod 32 is longer (and heavier, and the cofferdam structure is under greater pressure), and a hydraulic cylinder 33 with a larger driving force is matched.

[0044] The hydraulic system (including oil tank, oil pump, and oil pipeline) of the aforementioned hydraulic cylinder 33 and the cooperative operation of the hydraulic cylinders are conventional structures for multiple hydraulic cylinders 33 working together as disclosed in the prior art. Those skilled in the art can understand the specific working principle and structural principle of the aforementioned four hydraulic cylinders 33 by consulting technical manuals and dictionaries.

[0045] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A composite sheet pile, comprising a plurality of sequentially interlocked sheet pile units, each sheet pile unit comprising an interlocking mother plate and daughter plates, characterized in that, It also includes the upper support beam structure that supports the upper ends of the sheet pile units; And a top bar structure supporting the lower side of the sheet pile unit, the top bar structure includes several top bars pushed by hydraulic cylinders, the top bars are fixedly connected to a hinged arm frame, the hinged arm frame is hinged to the upper support beam structure; The upper support beam structure and the top bar structure form a double-layer support structure.

2. The sectional steel sheet pile according to claim 1, characterized in that, The upper support beam structure includes horizontal beams spaced apart on both sides and longitudinal beams that are respectively connected and installed at both ends of the horizontal beams; The crossbeams and longitudinal beams are assembled and connected by a detachable connection structure.

3. The sectional steel sheet pile according to claim 2, wherein The detachable connection structure includes a mother plate welded to the end of the crossbeam, and a daughter plate welded to the side wall of the longitudinal beam to mate with the mother plate. The mother plate and the daughter plate are fastened together by a number of tie rods.

4. The combined steel sheet pile according to claim 2, characterized in that, The upper support beam structure also includes a fork beam structure that supports the beams between the horizontal beams and the vertical beams.

5. The sectional steel sheet pile according to claim 4, wherein The fork beam structure includes a fork beam with four diagonally arranged connecting ends. Vertically arranged connecting beams are welded to the connecting ends. Mounting seats are welded to both ends of the connecting beams. The mounting seats on both sides are fastened to the cross beam and the longitudinal beam by bolts.

6. The sectional steel sheet pile according to claim 5, wherein A support beam is welded to the bottom center of the fork beam, and four hydraulic cylinders that extend and retract in different directions are installed on the support beam. The pushing end of the hydraulic cylinder is detachably equipped with a push rod. The top rod is hinged to the hinged arm frame, which is hinged to the fork beam.

7. The sectional steel sheet pile according to claim 6, wherein The fork beam is welded with a rod shaft of a hinged arm frame; A fixed hinge shaft is welded onto the hinge arm frame, and a hinge sleeve that is hinged to the fixed hinge shaft is welded onto the top rod.

8. The combined steel sheet pile according to claim 1, characterized in that, The inner wall of the mother plate is welded with a sleeve of channel steel; the crossbeam and the longitudinal beam pass through the sleeve of channel steel respectively; The crossbeams and longitudinal beams are fastened to the channel steel with bolts.

9. The combined steel sheet pile according to claim 2, characterized in that, The crossbeams and longitudinal beams are H-shaped steel beams.

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