Special-shaped closing steel sheet pile

Abstract

The utility model relates to the technical field of construction parts, specifically relates to a special-shaped closing steel sheet pile. The special-shaped closing steel sheet pile is arranged at the closing opening between two steel sheet pile bodies, and the side part of the steel sheet pile body is provided with a locking part and a locking groove; the special-shaped closing steel sheet pile comprises at least one pile plate unit, the pile plate unit comprises a V-shaped pile plate, a clamping part and a clamping groove arranged at the side part of the V-shaped pile plate, and the clamping part is used for adaptively clamping connection with the locking groove of the adjacent steel sheet pile body or the clamping groove of the adjacent pile plate unit. The utility model utilizes the structural characteristics of the V-shaped pile plate, can flexibly adapt to closing openings with different widths, can be adjusted in angle or combined and spliced, can adapt to different degrees of deflection, can ensure that the clamping part effectively contacts, can avoid the problem that the conventional steel sheet pile body cannot be effectively connected due to the mismatch of the linear type, and can greatly improve the adaptation capability to complex closing openings.

Description

Technical Field

[0001] This utility model relates to the field of construction parts technology, and more specifically, to an irregularly shaped closure steel sheet pile. Background Technology

[0002] Steel sheet piles play a vital role in bridge cofferdam construction, temporary ditch excavation, and as retaining walls for soil, water, and sand, as well as in embankment protection projects. Larssen steel sheet piles are widely used, consisting of interlocking strips and interlocking grooves. During construction, the interlocking strips of the steel sheet piles pass through the interlocking grooves of adjacent steel sheet piles, forming an interlocking structure. Multiple consecutive steel sheet piles can form a sealed and reliable barrier surface, keeping soil, water, and sand out.

[0003] In the construction of sheet pile support systems, sheet pile driving is typically carried out in segments. However, due to the often complex construction environment and the influence of geological conditions, surrounding environment, and other factors, multiple closure joints inevitably occur during the segmented driving process. The width and shape of these closure joints are usually difficult to match with the standard module of the sheet piles, posing a natural challenge to their handling. Based on the spatial relationship between the sheet piles on both sides of the closure joint, there are several typical forms of closure joints (as shown in the attached diagram). Figure 1 Appendix Figure 2 As shown in the figure, this further increases the complexity of the process. Specifically, the difficulties in handling the closure joint are mainly reflected in the following aspects: On the one hand, the width of the closure joint does not match the standard module of the sheet pile, which makes it impossible for conventional sheet piles to form an effective interlocking connection, making it difficult to ensure the tightness and reliability of the connection; on the other hand, due to the complex and variable properties of the soil in the construction area, the sheet piles are prone to deflection during the driving process, which makes the interlocking grooves and interlocking strips of the sheet piles on both sides of the closure joint not parallel, which in turn causes the sheet piles to bear additional compressive or tensile stress when connecting the closure joint.

[0004] If effective closure techniques and interlocking measures are not implemented, the aforementioned problems can easily lead to serious structural damage, such as interlocking separation and sheet pile tearing, directly impairing the soil-retaining and water-stopping functions of the sheet pile support system. This will not only prolong the construction period and increase project costs, but may also cause phenomena such as water inrush and sand leakage, and in extreme cases, even lead to foundation pit collapse, posing a serious threat to construction safety and the surrounding environment.

[0005] Therefore, how to safely and efficiently handle non-standard closure joints in sheet pile support systems and avoid various problems caused by improper handling is a technical challenge that urgently needs to be solved in the current field of sheet pile support construction. Utility Model Content

[0006] In view of this, the present invention provides an irregularly shaped closure steel sheet pile, which aims to improve the problems in the prior art of difficult non-standard closure joint processing, unreliable connection and easy generation of additional stress leading to structural damage, functional impairment and increased engineering risks.

[0007] This utility model provides an irregularly shaped sheet pile with a closing opening between two sheet pile bodies. The side of the sheet pile body is provided with a locking part and a locking groove. The irregularly shaped sheet pile includes at least one pile plate unit, wherein the pile plate unit includes a V-shaped pile plate, an interlocking part and an interlocking groove disposed on the side of the V-shaped pile plate, and the interlocking part is used to fit and interlock with the locking groove of the adjacent sheet pile body or the interlocking groove of the adjacent pile plate unit.

[0008] Preferably, the opening angle of the V-shaped pile plate is in the range of 45°-120°.

[0009] Preferably, the opening width of the V-shaped pile plate is in the range of 20cm to 40cm.

[0010] Preferably, the width of the V-shaped pile plate on the open side is 60-80cm.

[0011] Preferably, the V-shaped pile plate includes two inclined plates that are angled together and fixedly connected on one side, and the two inclined plates are connected to the interlocking part on the side away from each other, and the interlocking groove is formed between the inclined plates and the interlocking part.

[0012] Preferably, the two inclined panels are connected by a V-shaped connector, the thickness of which is greater than the thickness of the inclined panel near the V-shaped connector; The thickness of the inclined panel gradually increases in the direction away from the other inclined panel.

[0013] Preferably, the thickness of the inclined panel on the side away from the V-shaped connector is 10mm to 12mm, and the thickness of the inclined panel at one-third of the distance from the V-shaped connector is 6mm to 8mm.

[0014] Preferably, the pile plate unit is an integrally formed part.

[0015] Compared with the prior art, the irregularly shaped closure steel sheet pile provided by this utility model achieves at least the following beneficial effects: The irregularly shaped closure sheet pile provided in this application includes at least one pile plate unit. The V-shaped pile plate structure of the pile plate unit can be adjusted according to the actual width and shape of the closure opening. Specifically, when the width of the closure opening does not match the standard module of the sheet pile body, by setting an appropriate number of pile plate units, the structural characteristics of the V-shaped pile plate can be used to flexibly adapt to closure openings of different widths.

[0016] Meanwhile, for cases where the locking groove and locking part are not parallel due to the tilt of the sheet pile body, the non-linear V-shaped structure (with the two inclined panels at an angle) can accommodate angular deviations and match the spatial angles of the sheet pile bodies on both sides, filling the gaps in the alignment deviation. By adjusting its own angle or combining and splicing, it can adapt to different degrees of tilt, ensuring effective contact of the interlocking part and avoiding the problem that conventional sheet pile bodies cannot be effectively connected due to mismatched alignments. This greatly improves the adaptability to complex closure joints.

[0017] Secondly, the interlocking part set on the side of the sheet pile unit is adapted to the interlocking groove of the adjacent sheet pile body or the interlocking groove of the adjacent sheet pile unit for interlocking connection. This interlocking structure can ensure that the irregularly shaped closed sheet pile and the sheet pile body on both sides form a firm connection. Even if the soil properties in the construction area are complex and the sheet pile body may be subjected to additional extrusion or tensile stress, the tight interlocking connection can effectively resist these stresses and reduce the occurrence of structural defects such as lock separation and sheet pile body tearing. This ensures that the soil retention and water-stopping functions of the sheet pile support system are not damaged and avoids the occurrence of phenomena such as water inrush and sand leakage.

[0018] Finally, because irregularly shaped closure sheet piles can quickly and effectively handle non-standard closure joints without requiring complex on-site processing or special treatment methods, the construction process for the closure joint is simplified, and the project construction cycle is shortened. At the same time, their reliable connection performance reduces rework and repairs caused by improper handling, thus lowering project costs. Furthermore, it effectively avoids extreme safety accidents such as foundation pit collapses, ensuring construction safety and the stability of the surrounding environment.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the above-described technical effects at the same time.

[0020] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0022] Figure 1The diagram shown is a reference structural diagram of the closure joint and the sheet piles on both sides in the prior art (I). Figure 2 The diagram shown is a reference structural diagram (II) of the existing technology for the use of the closure joint and the sheet piles on both sides. Figure 3 The diagram shown is a structural schematic of the pile plate unit provided in an embodiment of this utility model; Figure 4 The diagram shown is a schematic diagram of the structural state of the irregularly shaped closure steel sheet pile provided in this embodiment of the present invention (I). Figure 5 The diagram shown is a schematic diagram (II) of the structure of the irregularly shaped closure steel sheet pile provided in the embodiment of this utility model. Figure 6 The diagram shown is a schematic diagram of the structure of the irregularly shaped closure steel sheet pile in use according to an embodiment of this utility model (III).

[0023] Explanation of reference numerals in the attached figures: 10-Sheet pile body, 11-Locking part, 12-Locking groove, 20-Closing opening, 100-Pile sheet unit, 110-V-shaped pile sheet, 111-Inclined panel, 112-V-shaped connection part, 120-Interlocking part, 130-Interlocking groove. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] Various modifications and variations can be made to this utility model without departing from its spirit or scope, which will be obvious to those skilled in the art. Therefore, this utility model is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this utility model can be combined with each other without contradiction.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0030] Figure 3 The diagram shown is a structural schematic of the pile plate unit provided in an embodiment of this utility model. Figure 4 The diagram shown is a schematic diagram of the structural state of the irregularly shaped closure steel sheet pile provided in this embodiment of the present invention (I). Figure 4 The diagram shown is a schematic diagram (II) of the structure of the irregularly shaped closure steel sheet pile provided in the embodiment of this utility model. Figure 5 The diagram shown is a schematic diagram of the structure of the irregularly shaped closure steel sheet pile in use according to an embodiment of this utility model (III).

[0031] Please refer to Figures 1 to 5 This utility model embodiment provides an irregularly shaped sheet pile with a closing opening 20 between two sheet pile bodies 10. The side of the sheet pile body 10 is provided with a locking part 11 and a locking groove 12. The irregularly shaped sheet pile includes at least one pile plate unit 100. The pile plate unit 100 includes a V-shaped pile plate 110, an interlocking part 120 and an interlocking groove 130 provided on the side of the V-shaped pile plate 110. The interlocking part 120 is used to adapt and interlock with the locking groove 12 of the adjacent sheet pile body 10 or the interlocking groove 130 of the adjacent pile plate unit 100.

[0032] In use, the closure joint 20 can take many typical forms depending on the spatial relationship between the sheet piles on both sides of the closure joint. In one specific implementation, see [reference needed]. Figure 4 and Figure 6 The opening directions of the locking grooves 12 on both sides of the closing opening 20 are consistent (e.g., both facing downwards). Irregularly shaped closing sheet piles may include an odd number of pile sheet units 100. For example, when the width of the closing opening 20 is small (less than the width of one sheet pile body 10), such as... Figure 4 The irregularly shaped closure sheet pile includes a pile sheet unit 100, which can achieve the closure of the closure opening 20; when the width of the closure opening 20 is large (greater than the width of a sheet pile body 10), see [reference needed]. Figure 6The irregularly shaped closure sheet pile includes three pile sheet units 100, which can achieve closure of the closure opening 20. In another specific embodiment, see... Figure 5 The opening directions of the locking grooves 12 of the sheet pile bodies 10 on both sides of the closing opening 20 are inconsistent (for example, one faces upward and the other faces downward). The irregular closing sheet pile may include an even number of pile plate units 100. For example, the irregular closing sheet pile includes two pile plate units 100, which can realize the closure of the closing opening 20.

[0033] The irregularly shaped sheet pile provided in this embodiment includes at least one pile plate unit 100. The V-shaped pile plate 110 structure of the pile plate unit 100 can be adjusted according to the actual width and shape of the closing opening 20. Specifically, when the width of the closing opening 20 does not match the standard module of the sheet pile body 10, by setting an appropriate number of pile plate units 100, the structural characteristics of the V-shaped pile plate 110 can be used to flexibly adapt to closing openings 20 of different widths.

[0034] Meanwhile, for cases where the locking groove 12 and locking part 11 are not parallel due to the skewness of the sheet pile body 10, the non-linear V-shaped structure (with the two inclined panels 111 at an angle) can accommodate angular deviations and match the spatial angles of the sheet pile bodies 10 on both sides, filling the gaps in the alignment deviations. By adjusting its own angle or combining and splicing, it can adapt to different degrees of skewness, ensuring effective contact of the interlocking parts, avoiding the problem that the conventional sheet pile body 10 cannot be effectively connected due to mismatched alignments, and greatly improving the adaptability to complex closing joints 20.

[0035] Secondly, the interlocking part 120 provided on the side of the sheet pile unit 100 is adapted to interlock with the locking groove 12 of the adjacent sheet pile body 10 or the interlocking groove 130 of the adjacent sheet pile unit 100. This interlocking structure can ensure that the irregularly shaped sheet pile and the sheet pile body 10 on both sides form a firm connection. Even if the soil properties in the construction area are complex and the sheet pile body 10 may be subjected to additional compression or tensile stress, the tight interlocking connection can effectively resist these stresses and reduce the occurrence of structural defects such as lock separation and tearing of the sheet pile body 10. This ensures that the soil retention and water-stopping functions of the sheet pile support system are not damaged and avoids the occurrence of phenomena such as water inrush and sand leakage.

[0036] Finally, because irregularly shaped closure sheet piles can quickly and effectively handle non-standard closure joints 20 without requiring complex on-site processing or special treatment methods, the construction process for the closure joint 20 is simplified, and the project construction cycle is shortened. At the same time, its reliable connection performance reduces rework and repairs caused by improper handling, lowering project costs. Furthermore, it effectively avoids extreme safety accidents such as foundation pit collapse, ensuring construction safety and the stability of the surrounding environment.

[0037] In some embodiments, the opening angle of the V-shaped pile plate 110 ranges from 45° to 120°.

[0038] In this embodiment, on the one hand, because the opening angle range of 45°-120° can cover the spatial angle requirements of most non-standard closure joints 20 caused by the deflection of the sheet piles, this embodiment can improve the ability to accurately adapt to different closure joint 20 shapes. On the other hand, if the opening angle of the V-shaped pile plate 110 is less than 45°, the two sides of the V-shaped pile plate 110 will be too close together, which will not only increase the installation difficulty when connecting with the sheet pile bodies 10 on both sides or adjacent pile plate units 100, but also exacerbate the stress concentration phenomenon when subjected to soil compression and tensile stress, which can easily lead to pile plate deformation or even damage. If the opening angle of the V-shaped pile plate 110 is greater than 120°, the structural strength of the V-shaped pile plate 110 will decrease, and the overall resistance to deformation will be weakened when resisting external loads, making it difficult to stably maintain the tightness of the connection. The opening angle of the V-shaped sheet pile 110 ranges from 45° to 120°, which enables the two sides of the V-shaped sheet pile 110 to form a balanced stress structure. This ensures that the steel pile support system itself has sufficient structural strength to resist external stress, and also distributes the stress evenly to the entire sheet pile and connection parts, reducing the risk of local damage. This ensures the stability and reliability of the overall connection of the irregularly shaped closure steel sheet piles. In some implementations, the opening width of the V-shaped pile sheet 110 ranges from 20cm to 40cm.

[0039] In this embodiment, firstly, during the construction of the sheet pile support system, the width of the closure joint 20 often deviates from the standard module due to factors such as geology and construction. An opening width range of 20cm to 40cm can cover most non-standard closure joint 20 widths encountered in actual projects. When the closure joint 20 width is small, a V-shaped pile plate 110 with an opening width close to 20cm can be selected to avoid material waste and loose connections caused by an excessively wide opening. When the closure joint 20 width is large, an opening width of approximately 40cm can meet the connection requirements, eliminating the need for splicing multiple pile plate units 100 and simplifying the structure. This limited range allows the V-shaped pile plate 110 to more accurately match the width of the closure joint 20, improving the fitting accuracy for non-standard closure joints 20. Secondly, it ensures the structural strength and stress balance of the V-shaped pile plate 110. If the opening width is less than 20cm, the distance between the two sides of the V-shaped sheet pile 110 is too narrow. When subjected to external soil pressure, water pressure, and other loads, large stress concentrations are likely to occur on both sides of the sheet pile, which may lead to bending or damage of the sheet pile. If the opening width is greater than 40cm, the span of the sheet pile itself increases, the structural stability decreases, and it is prone to deformation under load, affecting the interlocking connection with adjacent sheet piles or sheet pile units 100. An opening width of 20cm to 40cm can ensure that the sheet pile has sufficient structural dimensions while allowing stress to be evenly distributed on the sheet pile, ensuring that the sheet pile has good load-bearing capacity and deformation resistance, and maintaining the stress balance of the overall structure.

[0040] In some embodiments, the width of the V-shaped pile plate 110 on the open side ranges from 60 to 80 cm.

[0041] In this embodiment, the width of the opening side of the V-shaped sheet pile 110 is a crucial parameter for ensuring its overall rigidity; a range of 60-80 cm provides sufficient structural support. This width allows the sheet pile to distribute loads more evenly when subjected to lateral pressures from soil, water, and sand, reducing deformation or damage caused by excessive local stress. Compared to a narrower width, this range effectively improves the sheet pile's resistance to bending and shearing, ensuring a stable structural form even in complex construction environments, providing a solid foundation for the entire closure connection. Secondly, it optimizes the fit with adjacent structures, enhancing the overall integrity of the connection. This width range allows for a more coordinated fit with the adjacent sheet pile body 10 and sheet pile unit 100. Sufficient width on the opening side ensures ample space for the interlocking portion 120 and the interlocking groove 130, resulting in a more robust and reliable interlocking connection and avoiding insufficient connection strength due to insufficient space. At the same time, the appropriate width allows the V-shaped sheet pile 110 to better connect with the structures on both sides, reducing stress concentration at the connection points, enhancing the integrity of the entire steel sheet pile support system, and further ensuring the effects of retaining soil, water, and sand.

[0042] In some embodiments, the V-shaped pile plate 110 includes two inclined plates 111 that are angled together and fixedly connected on one side. The side of the two inclined plates 111 away from each other is connected to the interlocking part 120, and the inclined plates 111 and the interlocking part 120 form an interlocking groove 130. The two inclined panels 111 are connected by a V-shaped connector 112. The thickness of the V-shaped connector 112 is greater than the thickness of the inclined panel 111 near the V-shaped connector 112. The thickness transition from the V-shaped connector 112 to the inclined panel 111 is smooth. The thickness of the inclined panel 111 gradually increases in the direction away from the other inclined panel 111.

[0043] In this embodiment, the two inclined panels 111 are connected by a V-shaped connector 112, and the thickness of the V-shaped connector 112 is greater than the thickness of the inclined panel 111 near the connector. This design makes the connection point a "reinforced support point" for the entire pile plate. As the stress convergence area of ​​the two inclined panels 111, the thickened V-shaped connector 112 can effectively disperse the stress concentration here, avoid the connection point from breaking or deforming due to excessive load, and ensure the long-term stability of the fixed connection relationship between the inclined panels 111, thereby improving the overall structural strength and deformation resistance of the V-shaped pile plate 110. At the same time, the thickness of the inclined panel 111 gradually increases in the direction away from the other inclined panel 111, so that the edge of the pile plate (the side connected to the interlocking part 120) has a stronger load-bearing capacity. When interlocking with adjacent structures, it can better resist the compressive stress generated during the interlocking process and reduce edge deformation or damage. Secondly, the thickened design of the V-shaped connector 112 provides a stable load-bearing foundation for the inclined plate 111, allowing external loads (such as soil pressure and water pressure) borne by the inclined plate 111 to be transferred more smoothly to the connector, and then evenly distributed to the entire pile plate through the connector. The gradual thickness design of the inclined plate 111 allows stress to gradually transition from the V-shaped connector 112 to the edge interlocking part 120, avoiding localized stress concentration caused by abrupt changes in thickness. This makes the stress on the entire pile plate more balanced. This reasonable stress transfer path allows the V-shaped pile plate 110 to maintain structural stability under complex loads, extending its service life. Furthermore, it improves the durability and reliability of the interlocking connection. The increased edge thickness of the inclined plate 111 makes the structure of the part connected to the interlocking part 120 more robust. Under long-term exposure to interlocking friction and compression, it is less prone to wear and deformation, ensuring the fitting accuracy of the interlocking part 120 with the adjacent locking groove 12 or interlocking groove 130. Meanwhile, the reinforced design of the V-shaped connector 112 ensures that the inclined panel 111 will not tilt relative to the force, maintains the shape stability of the interlocking groove 130, further ensures the tightness of the interlocking connection, and reduces the risk of reduced water-blocking and soil-blocking functions due to connection failure.

[0044] In some embodiments, the thickness of the inclined panel 111 on the side away from the V-shaped connector 112 is 10mm to 12mm, and the thickness of the inclined panel 111 at one-third of the distance from the V-shaped connector is 6mm to 8mm.

[0045] In this embodiment, the side of the inclined panel 111 furthest from the V-shaped connector 112 is a critical area for connection with the interlocking part 120. During the interlocking process, it will bear significant compressive stress and friction. The 10mm-12mm thickness design provides sufficient structural strength for this area, effectively resisting these external forces and preventing wear, deformation, or breakage, thus ensuring the long-term stability of the interlocking connection. Meanwhile, the area near the V-shaped connector (about one-third of the way down) experiences relatively less stress. A thickness of 6mm-8mm satisfies basic structural support requirements without wasting material due to excessive thickness, achieving precise reinforcement of different stress areas. Furthermore, when the inclined panel 111 bears external loads, stress can be evenly transmitted along the direction of thickness variation, avoiding stress concentration caused by abrupt thickness changes. The 10mm-12mm edge thickness and the 6mm-8mm thickness near the one-third of the connector form a reasonable gradient, allowing stress to smoothly transition from the edge to the connector, further enhancing the overall stress balance of the inclined panel 111 and improving its structural stability under complex loads. Secondly, the 10mm to 12mm edge thickness ensures the structural strength and durability of the 120-position interlocking joint, guaranteeing the reliability of the connection; while the 6mm to 8mm thickness near the third of the connection reduces material usage while meeting stress requirements. This differentiated thickness design based on stress avoids material waste caused by overall thickening, reduces manufacturing costs, and improves material utilization efficiency while ensuring structural performance, achieving a perfect balance between structural reliability and economy. In some embodiments, the pile plate unit 100 is an integrally formed part.

[0046] In this embodiment, the pile plate unit 100 is defined as a one-piece molded part, avoiding the weak points in the connection caused by welding, bolting and other processes in traditional splicing structures. The V-shaped pile plate, the interlocking part 120 and the interlocking groove 130 and other components are formed into a tight whole through one-time molding, without splicing gaps or stress concentration areas. This allows the pile plate unit 100 to evenly distribute stress throughout the entire structure when subjected to external loads (such as soil pressure, water pressure and impact force during construction), effectively resisting the risks of deformation and cracking, and significantly enhancing the fatigue resistance and service life of the pile plate unit 100.

[0047] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An irregularly shaped sheet pile, comprising a closing opening between two sheet pile bodies, wherein the side of each sheet pile body is provided with a locking part and a locking groove; Its features are, The irregularly shaped sheet pile includes at least one pile plate unit, which includes a V-shaped pile plate, an interlocking part and an interlocking groove disposed on the side of the V-shaped pile plate, and the interlocking part is used to fit and interlock with the locking groove of the adjacent sheet pile body or the interlocking groove of the adjacent pile plate unit.

2. The irregularly shaped closure sheet pile as described in claim 1, characterized in that, The opening angle of the V-shaped pile plate ranges from 45° to 120°.

3. The irregularly shaped closure sheet pile as described in claim 1, characterized in that, The opening width of the V-shaped pile plate ranges from 20cm to 40cm.

4. The irregularly shaped closure sheet pile as described in claim 1, characterized in that, The width of the V-shaped pile plate on the open side ranges from 60 to 80 cm.

5. The irregularly shaped closure sheet pile as described in claim 1, characterized in that, The V-shaped pile plate includes two inclined plates that are angled together and fixedly connected on one side. The side of the two inclined plates away from each other is connected to the interlocking part, and the interlocking groove is formed between the inclined plates and the interlocking part. The two inclined panels are connected by a V-shaped connector, the thickness of which is greater than the thickness of the inclined panel near the V-shaped connector, and the thickness transition from the V-shaped connector to the inclined panel is smooth. The thickness of the inclined panel gradually increases in the direction away from the other inclined panel.

6. The irregularly shaped closure sheet pile as described in claim 5, characterized in that, The thickness of the inclined panel on the side away from the V-shaped connector is 10mm to 12mm, and the thickness of the inclined panel at one-third of the distance from the V-shaped connector is 6mm to 8mm.

7. The irregularly shaped closure sheet pile as described in claim 1, characterized in that, The pile plate unit is a one-piece molded component.

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