A zigzag-shaped pile wall structure

Abstract

The utility model provides a kind of fold line shape pile wall structure, including multiple supporting piles arranged in fold line shape;Two adjacent supporting piles are connected by lock catch assembly cooperation;Compared with traditional straight line shape pile wall structure, the fold line shape pile wall structure used in the present application can improve the overall bending resistance without increasing the size of each pile;And the lock catch assembly can realize the multi-point connection of two adjacent supporting piles, ensuring the connection strength.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a zigzag pile wall structure. Background Technology

[0002] During the construction of cofferdams and foundation pit support systems, multiple support piles are often arranged in a straight line and connected sequentially to form a linear pile wall structure in order to meet the requirements of water retention and / or soil retention. For example, the SE-locked steel pipe pile support structure disclosed in utility model patent CN202122313724X is a typical linear pile wall structure. However, this type of linear pile wall structure mainly relies on the bending resistance of each pile to resist the load, resulting in low overall bending resistance and a tendency to lateral deformation and / or overturning instability.

[0003] To improve the bending resistance of pile wall structures, the current approach is to increase the outer diameter and wall thickness of each pile. However, this increases the difficulty and cost of construction. Therefore, how to improve the bending resistance of pile wall structures without changing the dimensions of each pile is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a zigzag pile wall structure, which reduces the bending moment load of a single pile and improves the overall bending resistance by replacing the traditional straight pile with a zigzag pile.

[0005] To achieve the above objectives, this utility model provides a zigzag pile wall structure, including multiple support piles arranged in a zigzag pattern; adjacent support piles are connected by a locking assembly; compared with the traditional straight pile wall structure, the zigzag pile wall structure adopted in this application can improve the overall bending resistance without increasing the size of each pile; and the locking assembly can realize multi-point connection between adjacent support piles to ensure connection strength.

[0006] Preferably, the locking assembly includes a male locking buckle and a female locking buckle that are connected in a mating manner; the male locking buckle and the female locking buckle are respectively fixed on two adjacent support piles.

[0007] Preferably, the locking assembly includes a sheet pile, the sheet pile being provided with a male locking buckle and a female locking buckle; the sheet pile is connected to the female locking buckle of a support pile on one side through the male locking buckle, and the sheet pile is connected to the male locking buckle of a support pile on the other side through the female locking buckle.

[0008] Preferably, both the male and female locking buckles are Larsen stake locking buckles.

[0009] Preferably, both the male and female latches are hollow, side-opening latch tubes, and the two side-opening latch tubes in the latch assembly are connected by an I-beam.

[0010] Preferably, the male latch is a hollow, side-opening latch tube, and the female latch includes a lock head latch that is nested and connected to the side-opening latch tube.

[0011] Preferably, the side-opening locking tube is a C-shaped locking tube.

[0012] Preferably, in any three consecutive support piles, the support piles on both sides are arranged symmetrically about the middle support pile.

[0013] Preferably, the included angle formed by the line connecting the centers of the three continuous support piles is an obtuse angle.

[0014] Preferably, the support piles are steel pipe piles or PC method piles.

[0015] As described above, the polygonal pile wall structure of this utility model has the following beneficial effects:

[0016] This application adopts a zigzag pile arrangement scheme to replace the traditional straight pile arrangement scheme for the pile wall structure. This facilitates the transformation of continuous straight large-span beams into multiple sequentially connected inclined small-span beams. The inclined small-span beams convert part of the load into axial force, thereby reducing the bending moment burden of individual piles and improving the overall bending resistance. At the same time, the zigzag pile group can form a tight "spatial grid", allowing adjacent support piles to be mutually constrained by the soil, thus improving the overall lateral displacement resistance. Attached Figure Description

[0017] Figure 1 This is a plan view (i.e., top view) of a polygonal pile wall structure in one embodiment of this application.

[0018] Figure 2 for Figure 1 Enlarged view of point A.

[0019] Figure 3 This is a plan view of the locking assembly connecting two adjacent support piles in one embodiment.

[0020] Figure 4 This is a plan view of the locking assembly connecting two adjacent support piles in another embodiment.

[0021] Figure 5 This is a plan view of the locking assembly connecting two adjacent support piles in another embodiment.

[0022] Explanation of reference numerals in the attached figures

[0023] Support pile 1, locking assembly 2, male locking 21, female locking 22, sheet pile 23, I-beam 24. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0025] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0026] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0027] Furthermore, the use of terms such as "first" and "second" in this application is 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 as "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 in this application.

[0028] The zigzag pile wall structure provided by this utility model is mainly used in cofferdam construction and foundation pit support construction. It replaces the traditional straight pile arrangement with a zigzag pile arrangement to reduce the bending moment load of a single pile and improve the overall bending resistance.

[0029] like Figure 1 As shown, the zigzag pile wall structure provided by this utility model includes multiple support piles 1 arranged in a zigzag shape; adjacent support piles 1 are connected by a locking assembly 2. Figure 1 The arrows in the diagram indicate the direction of the loads applied to the pile wall structure from the outside.

[0030] Because this application replaces the traditional straight pile arrangement with a broken-line pile arrangement, the originally continuous straight large-span beam can be transformed into multiple sequentially connected inclined small-span beams (here, the inclined small-span beam is composed of two adjacent support piles 1 and the interlocking assembly 2 between them). Taking a certain inclined small-span beam as an example for stress analysis, the external load borne by the inclined small-span beam can be decomposed into a lateral component perpendicular to the inclined small-span beam and an axial component consistent with the inclined direction of the inclined small-span beam. The lateral component is bound to be less than the external load, thereby effectively reducing the bending moment burden of a single support pile and improving the overall bending resistance. At the same time, the broken-line pile group can form a tight "spatial grid", so that adjacent support piles 1 are mutually constrained by the soil, improving the overall resistance to lateral displacement.

[0031] In a preferred embodiment, in any three consecutive support piles 1, the support piles 1 on both sides are arranged symmetrically with respect to the middle support pile 1; compared with the asymmetrical arrangement, the symmetrical arrangement can ensure that the support piles 1 on both sides deform synchronously and reduce differential settlement.

[0032] In a preferred embodiment, the included angle formed by the line connecting the centers of the three continuous support piles is an obtuse angle, so as to reduce the number of support piles by one while ensuring sufficient bending stiffness, thereby achieving the purpose of reducing costs.

[0033] It is understood that the support pile 1 can be any existing pile structure such as steel pipe pile or PC method pile, and there is no limitation on it. In this embodiment, the support pile 1 is preferably a steel pipe pile.

[0034] It is understood that the locking component 2 mentioned above includes, but is not limited to, the following embodiments, as long as it can achieve multi-point mechanical engagement in the height direction.

[0035] Example 1:

[0036] like Figure 1 and Figure 2 As shown, the locking assembly 2 includes a male locking buckle 21 and a female locking buckle 22 that can be directly connected; wherein, the male locking buckle 21 and the female locking buckle 22 are respectively fixed on two adjacent support piles 1 to realize the detachable connection of the two adjacent support piles 1.

[0037] At this time, the male latch 21 and female latch 22 that are directly connected together include, but are not limited to, the following two structural forms:

[0038] Structural Form 1:

[0039] like Figure 2 As shown, both the male locking bolt 21 and the female locking bolt 22 are Larssen pin locking bolts. Since Larssen pin locking bolts are existing technology, they will not be described in detail further. Their specific structure can be found in [reference needed]. Figure 2 The structural form of Zhonggong Lock 21.

[0040] Structural Form Two:

[0041] like Figure 3 As shown, the male latch 21 is a hollow, side-opening latch tube, and the female latch 22 is a lock head latch nested and connected to the side-opening latch tube.

[0042] The side-opening locking tube is a C-shaped locking mechanism (see reference for specific structure). Figure 3 The structure of the lock 21 (or rectangular lock, i.e., formed by opening a side opening on the side wall of a hollow rectangular tube) and other existing hollow steel tubes with side openings are not limited; the lock head lock is preferably a T-shaped lock consisting of a plate-shaped lock head and a web (the specific structure can be found in [reference]). Figure 3 The structure of the central locking latch 22 is such that the side opening of the side-opening locking tube is used to avoid the web of the T-shaped locking latch, so that the plate-shaped lock head can be smoothly nested in the side-opening locking tube.

[0043] Of course, the plate-shaped lock head in the T-shaped lock can be replaced with a tubular lock head of various cross-sectional shapes. There are no restrictions on this, as long as the lock head can be securely nested inside the side-opening lock tube.

[0044] Example 2

[0045] like Figure 4 As shown, the locking assembly 2 includes a male locking buckle 21 and a female locking buckle 22 connected by steel sheet piles 23; wherein, the male locking buckle 21 and the female locking buckle 22 are respectively fixed on two adjacent support piles 1, and the steel sheet pile 23 is connected to the female locking buckle 22 of one side of the support pile through the male locking buckle 21, and the steel sheet pile 21 is connected to the male locking buckle 21 of the other side of the support pile through the female locking buckle 22, so as to realize the detachable connection of two adjacent support piles 1.

[0046] At this time, the male latch 21 and the female latch 22 may have the following two structural forms, including but not limited to:

[0047] Structural Form 1:

[0048] like Figure 4 As shown, both the male locking bolt 21 and the female locking bolt 22 are Larssen pin locking bolts. Since Larssen pin locking bolts are existing technology, they will not be described in detail further. Their specific structure can be found in [reference needed]. Figure 4 The structural form of Zhonggong Lock 21.

[0049] Structural Form Two:

[0050] The male latch 21 is a hollow, side-opening latch tube, and the female latch 22 is a lock head latch that is nested and connected to the side-opening latch tube.

[0051] The side-opening locking tube is a C-shaped locking mechanism (see reference for specific structure). Figure 3The structure of the lock 21 (or rectangular lock, i.e., formed by opening a side opening on the side wall of a hollow rectangular tube) and other existing hollow steel tubes with side openings are not limited; the lock head lock is preferably a T-shaped lock consisting of a plate-shaped lock head and a web (the specific structure can be found in [reference]). Figure 3 The structure of the central locking latch 22 is such that the side opening of the side-opening locking tube is used to avoid the web of the T-shaped locking latch, so that the plate-shaped lock head can be smoothly nested in the side-opening locking tube.

[0052] Of course, the plate-shaped lock head in the T-shaped lock can be replaced with a tubular lock head of various cross-sectional shapes. There are no restrictions on this, as long as the lock head can be securely nested inside the side-opening lock tube.

[0053] Since the locking assembly 2 in this embodiment includes sheet piles 23, the entire zigzag pile wall structure is actually a combined pile wall structure composed of support piles 1 and sheet piles 23. Compared with the pile wall structure composed only of support piles 1, this combined pile wall structure has lower cost and higher bending stiffness and shear resistance.

[0054] Example 3

[0055] like Figure 5 As shown, the locking assembly 2 includes a male locking buckle 21 and a female locking buckle 22 connected by an I-beam 24; wherein the male locking buckle 21 and the female locking buckle 22 are respectively fixed on two adjacent support piles 1, so that the I-beam 24 can be connected to the female locking buckle 22 of one support pile and to the male locking buckle 21 of the other support pile, which facilitates the detachable connection of two adjacent support piles 1.

[0056] At this time, both the male locking buckle 21 and the female locking buckle 22 are hollow side-opening locking buckle tubes. Thus, the two flange plates of the I-beam 24 can be nested in the side-opening locking buckle tubes of two adjacent support piles 1 respectively, so as to realize the detachable connection of the two adjacent support piles 1.

[0057] It is understandable that the side-opening locking tube uses a C-shaped locking mechanism (see reference for specific structure). Figure 5 The structure of the locking buckle 21 (or rectangular locking buckle (i.e., forming a side opening on the side wall of a hollow rectangular tube) and other existing hollow steel tubes with side openings are not limited; in this embodiment, the side opening locking buckle tube is preferably a C-shaped locking buckle.

[0058] The locking assembly 2 in this embodiment includes I-beams 24, which can effectively reduce the amount of support piles 1 used in the entire zigzag pile wall structure and effectively reduce the cost of the entire pile wall structure.

[0059] To verify the shear resistance of the zigzag pile wall structure in this invention, both a straight pile wall structure and a zigzag pile wall structure were constructed using seven support piles 1, each with an outer diameter of 630 mm and a wall thickness of 14 mm. The locking assembly 2 between adjacent support piles 1 uses Larssen pile locking, and in the zigzag pile wall structure, the included angle formed by the lines connecting the centers of any three support piles is 129°. Therefore, the bending moment of inertia of the straight pile wall structure can be calculated to be 3233805 mm. 4 / m, bending moment of inertia is 5855791mm 4 / m, improving bending resistance by 81%, significantly enhancing the bending resistance of pile wall structures.

[0060] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0061] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A polygonal pile wall structure, characterized in that, It includes multiple support piles (1) arranged in a zigzag shape; two adjacent support piles (1) are connected by a locking assembly (2); the locking assembly (2) includes a male locking buckle (21) and a female locking buckle (22) that are connected to each other; the male locking buckle (21) and the female locking buckle (22) are respectively fixed on two adjacent support piles (1).

2. The polygonal pile wall structure according to claim 1, characterized in that, The locking assembly (2) includes a sheet pile (23), on which a male locking buckle (21) and a female locking buckle (22) are provided; the sheet pile (23) is connected to the female locking buckle (22) of one side support pile through the male locking buckle (21), and the sheet pile (23) is connected to the male locking buckle (21) of the other side support pile through the female locking buckle (22).

3. A polygonal pile wall structure according to claim 1 or 2, characterized in that, Both the male lock (21) and the female lock (22) are Larsen pile locks.

4. A polygonal pile wall structure according to claim 1, characterized in that, Both the male latch (21) and the female latch (22) are hollow side-opening latch tubes, and the two side-opening latch tubes in the latch assembly (2) are connected by an I-beam (24).

5. A polygonal pile wall structure according to claim 1 or 2, characterized in that, The male latch (21) is a hollow side-opening latch tube, and the female latch (22) is a lock head latch that is nested and connected to the side-opening latch tube.

6. A polygonal pile wall structure according to claim 5, characterized in that, The side-opening locking tube is a C-shaped locking tube.

7. A polygonal pile wall structure according to claim 1, characterized in that, In any three consecutive support piles (1), the support piles (1) on both sides are arranged symmetrically about the support pile (1) in the middle.

8. A polygonal pile wall structure according to claim 1, characterized in that, The angle formed by the line connecting the centers of the three continuous support piles is an obtuse angle.

9. A polygonal pile wall structure according to claim 1, characterized in that, The support pile (1) is a steel pipe pile or a PC method pile.

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