Tubular pile cofferdam construction water stop test device

Abstract

The utility model provides a tubular pile cofferdam construction water stop test device, which relates to the technical field of tubular pile cofferdam construction, and comprises a test box, a soil table and a plurality of tubular piles, and two groups of mortise lock structures are respectively arranged on the peripheral surface of each tubular pile; every two adjacent pipe piles are connected together through a mortise lock assembly, and each mortise lock assembly comprises a set of mortise lock structures arranged on one pipe pile and a set of mortise lock structures arranged on the other pipe pile, and each mortise lock structure comprises a female lock catch and a first insertion block; the mortise lock structure is arranged on the other pipe pile and comprises a sub lock catch and a second insertion block; the interlocking assembly comprises a bolt, a nut and two insertion plates; one insertion plate is inserted into the first insertion block; the other insertion plate is inserted into the second insertion block; a bolt penetrates through the two insertion plates and then is locked by a nut; and under the constraint of the bolts, the two inserting plates are bent and buckled to form a pouring space. The pipe pile cofferdam water stop test device solves the problems that in the prior art, a pipe pile cofferdam water stop test is inconvenient to operate, a pipe pile is inconvenient to pull out under the action of slurry solidification after the test is completed, and the test efficiency is affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction technology field of pipe pile cofferdam, especially to a pipe pile cofferdam construction water stop test device. BACKGROUND

[0002] At present, the bridge water foundation mainly adopts the cofferdam structure form construction, and the lock pipe pile cofferdam is a temporary or permanent cofferdam structure used in the fields of water conservancy engineering, bridge construction, foundation pit support and the like, which is composed of a plurality of pipe piles with lock connection, is mutually engaged through the lock, forms a continuous water retaining or retaining wall, has simple structure, strong operability and has been widely applied.The water stop mode of the joint seam between the adjacent pipe piles of the traditional lock pipe pile cofferdam mainly adopts the injection of cement slurry in the lock for water stop, and in order to investigate the water stop performance of the pipe pile cofferdam and observe the water stop effect of the cement slurry, facilitate the construction use in the later period, model test needs to be carried out, but the pipe pile water stop test operation of this structure is inconvenient, after the test is completed, the pipe pile is inconvenient to pull out under the action of the slurry solidification in the lock structure, and the test efficiency is affected. SUMMARY

[0003] The utility model discloses a pipe pile cofferdam construction water stop test device, and aims at solving the problems of inconvenient pipe pile cofferdam water stop test operation in the prior art, inconvenient pipe pile pulling out operation under the action of slurry solidification after the test is completed and the test efficiency is affected.

[0004] In order to achieve the above object, the utility model embodiment adopts the following technical scheme:

[0005] The utility model discloses a pipe pile cofferdam construction water stop test device, which comprises a test box, a soil table arranged on the inner bottom surface of the test box and a plurality of pipe piles, the lower end of each pipe pile is inserted into the soil table, and the plurality of pipe piles are arranged to form a cofferdam structure.

[0006] The outer circumferential surface of each pipe pile is respectively provided with two groups of plug-in lock structures arranged along the circumferential direction of the pipe pile.

[0007] Each adjacent two pipe piles are connected together through a plug-in lock assembly, and the plug-in lock assembly comprises:

[0008] One group of plug-in lock structures arranged on one of the pipe piles comprises a female lock and a first plug block arranged on the outer circumferential surface of the pipe pile.

[0009] One group of plug-in lock structures arranged on another pipe pile comprises a male lock and a second plug block arranged on the outer circumferential surface of the pipe pile.

[0010] and an interlocking assembly including a bolt, a nut and two plugs; one end of one of the plugs is inserted into the insertion hole of the first insertion block and the lower end of the plug is inserted into the interior of the soil platform or abuts the upper surface of the soil platform; one end of the other plug is inserted into the insertion hole of the second insertion block and the lower end of the plug is inserted into the interior of the soil platform or abuts the upper surface of the soil platform; the bolt passes through the two plugs and is locked by the nut; under the constraint of the bolt, the two plugs are bent towards the side facing each other respectively to form a pouring space with an open upper end surface, a closed lower end surface and a closed peripheral surface.

[0011] In an optional embodiment, each of the pipe piles has the same shape.

[0012] In an optional embodiment, the two sets of interlocking structures on the peripheral surface of each pipe pile have different shapes, wherein one set of the interlocking structures includes the female lock and the other set of the interlocking structures includes the male lock.

[0013] In an optional embodiment, the two sets of interlocking structures on the peripheral surface of each pipe pile have the same shape, wherein the number of the pipe piles is N, N is an even number, then, in the two sets of interlocking structures of N / 2 pipe piles, each set of the interlocking structures includes the female lock, and in the two sets of interlocking structures of N / 2 pipe piles, each set of the interlocking structures includes the male lock.

[0014] In an optional embodiment, the two sets of interlocking structures on the peripheral surface of each pipe pile have different shapes, wherein the bending directions of the plugs inserted into one set of the interlocking structures and the plugs inserted into the other set of the interlocking structures are different.

[0015] In an optional embodiment, the plurality of pipe piles are arranged in a rectangular cofferdam.

[0016] In an optional embodiment, among the plurality of pipe piles, the pipe piles arranged at each corner are corner piles, and the pipe piles arranged between adjacent two corner piles are middle piles.

[0017] The included angle between the two sets of interlocking structures of each corner pile in a cross section perpendicular to the axis of the corner pile is 90°, and the two sets of interlocking structures of each middle pile are distributed on both sides of the axis of the middle pile along the radial direction of the middle pile.

[0018] In an optional embodiment, the female lock is in a cylindrical shape, the inside of the female lock is provided with a lock groove in a “T” shape in cross section, and the free end of the male lock is in a “T” shape in cross section which can be inserted into the lock groove in an up-down manner.

[0019] In an optional embodiment, the cross section of each plug is in an “L” shape.

[0020] In an optional embodiment, the pipe pile is a steel pipe pile.

[0021] The utility model embodiment can accurately evaluate the water stop performance by simulating the cofferdam structure in actual engineering, and provide reliable data support for actual construction, and the working principle is as follows: during the water stop test operation, each pipe pile is inserted into the soil table to form a cofferdam structure, and each adjacent two pipe piles are connected together through the plug-in lock assembly, the female lock buckle and the male lock buckle cooperate with each other at the connection, ensuring that the adjacent two pipe piles are connected firmly, and at the same time, the two plug-in plates are constrained by the corresponding plug-in blocks, and the pouring space with the open upper end face, the closed lower end face and the closed peripheral surface is formed by buckling with the change of the position of the adjacent two pipe piles, facilitating the pouring of the water stop mortar, so that the water stop performance is tested. After the test is completed, the plug-in plate can be first detached from the corresponding plug-in block, so that the plug-in plate is separated from the corresponding pipe pile, and there is no solidified water stop mortar between the female lock buckle and the male lock buckle, so that the pipe piles can be separated from the soil table, and the subsequent operation is not affected by the solidification of the water stop mortar.

[0022] The utility model embodiment can at least realize the following beneficial effects: (1) the cooperation of the female lock buckle and the male lock buckle ensures that the adjacent pipe piles are connected tightly and stably, and improves the overall strength of the cofferdam structure; (2) the design of the plug-in plate and the corresponding plug-in block can be flexibly adjusted according to the position of the pipe pile, and adapts to the demand of different shapes and sizes of cofferdam structure; (3) the two butt-jointed plug-in plates form a pouring space under the constraint of the bolt, which can effectively prevent the leakage of the water stop mortar, and ensure the accuracy of the water stop performance test; (4) after the test is completed, the plug-in plate and the corresponding plug-in block are quickly separated, which simplifies the process of detaching the pipe pile from the soil table, and improves the test efficiency; (5) the device is suitable for various pipe pile arrangement forms, and provides a universal solution for the water stop test of different types of cofferdam structure. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0024] Figure 1 The overall structure of the pipe pile cofferdam construction water stop test device provided by the utility model embodiment is shown in the axonometric explosion schematic view.

[0025] Figure 2 For Figure 1 The structure schematic view of the plurality of pipe piles under the soil table is shown in the structure schematic view.

[0026] Figure 3 For Figure 1 The top view of a cofferdam structure formed by arranging multiple pipe piles in the middle;

[0027] Figure 4 For Figure 3 The enlarged view of the local structure of the A area in the middle;

[0028] Figure 5 For Figure 1 The schematic view of the local structure connected by the plug-in assembly between the corner pile and its adjacent middle pile in the middle.

[0029] Icon: 1-test box; 2-soil platform; 3-pipe pile; 31-corner pile; 32-middle pile; 4-mother lock; 5-son lock; 6-first plug-in block; 7-second plug-in block; 8-plug-in plate; 91-bolt; 92-nut. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0032] It should be noted that: similar labels and letters represent similar items in the drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical" do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. As "horizontal" only means that it is more horizontal relative to "vertical", not that the structure must be completely horizontal, but can be slightly inclined.

[0035] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "arrange", "install", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be direct connection, also can be indirect connection through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0036] Some embodiments of the utility model will be described in detail below in combination with the drawings. In the case of no conflict, the following examples and features in examples can be combined with each other.

[0037] The embodiment provides a pipe pile cofferdam construction water stop test device, refer to Figures 1 to 5 The pipe pile cofferdam construction water stop test device comprises a test box 1, a soil table 2 arranged on the bottom surface in the test box 1 and a plurality of pipe piles 3, the lower end of each pipe pile 3 is respectively inserted into the soil table 2, and the plurality of pipe piles 3 are arranged to form a cofferdam structure.

[0038] Among them: the outer circumferential surface of each pipe pile 3 is respectively provided with two groups of interlocking structures arranged along the circumferential direction of the pipe pile 3. Each adjacent two pipe piles 3 are connected together through an interlocking assembly, and the interlocking assembly comprises a group of interlocking structures arranged on one of the pipe piles 3, a group of interlocking structures arranged on the other pipe pile 3 and a mutual locking assembly; the group of interlocking structures arranged on one of the pipe piles 3 comprises a female lock 4 and a first plug 6 arranged on the outer circumferential surface of the pipe pile 3; the group of interlocking structures arranged on the other pipe pile 3 comprises a male lock 5 and a second plug 7 arranged on the outer circumferential surface of the pipe pile 3; the mutual locking assembly comprises a bolt 91, a nut 92 and two plug plates 8; one end of one plug plate 8 is inserted into the insertion hole of the first plug 6, and the lower end of the plug plate 8 is inserted into the soil table 2 or abuts against the upper surface of the soil table 2; one end of the other plug plate 8 is inserted into the insertion hole of the second plug 7, and the lower end of the plug plate 8 is inserted into the soil table 2 or abuts against the upper surface of the soil table 2; the bolt 91 is locked by the nut 92 after passing through the two plug plates 8; under the constraint of the bolt 91, the two plug plates 8 are respectively bent towards the side facing each other, so as to form a pouring space with the upper end face open, the lower end face and the circumferential surface closed.

[0039] The embodiment can accurately evaluate the water stopping performance by simulating the cofferdam structure in actual engineering, and provide reliable data support for actual construction. The working principle is as follows: during the water stopping test operation, the pipe piles 3 are inserted into the soil table to form a cofferdam structure, and each adjacent two pipe piles 3 are connected together through the plug-in lock assembly. At the connection, the female lock buckle 4 and the male lock buckle 5 cooperate with each other to ensure that the adjacent two pipe piles 3 are connected firmly. At the same time, the two plug-in plates 8 are constrained by the corresponding plug-in blocks, and the pouring space with the upper end face open, the lower end face and the circumferential surface closed is formed by the change of the position of the adjacent two pipe piles 3, which is convenient for pouring the water stopping mortar, so as to test the water stopping performance. After the test is completed, the plug-in plate 8 can be first detached from the corresponding plug-in block, so that the plug-in plate 8 is separated from the corresponding pipe pile 3, and there is no solidified water stopping mortar between the female lock buckle 4 and the male lock buckle 5, so as to facilitate the separation of each pipe pile 3 from the soil table, and avoid affecting the subsequent operation due to the solidification of the water stopping mortar.

[0040] The embodiment can at least realize the following beneficial effects: (1) the cooperation of the female lock buckle and the male lock buckle ensures that the connection between the adjacent pipe piles is tight and stable, and the overall strength of the cofferdam structure is improved; (2) the design of the plug-in plate 8 and the corresponding plug-in block can be flexibly adjusted according to the position of the pipe pile 3, and can adapt to the requirements of cofferdam structures of different shapes and sizes; (3) the two abutting plug-in plates 8 form a pouring space under the constraint of the bolt 91, which can effectively prevent the leakage of the water stopping mortar and ensure the accuracy of the water stopping performance test; (4) after the test is completed, the plug-in plate 8 and the corresponding plug-in block are quickly separated, which simplifies the process of detaching the pipe pile 3 from the soil table 2 and improves the test efficiency; (5) the device is suitable for various arrangement forms of pipe piles 3, and provides a universal solution for water stopping tests of different types of cofferdam structures.

[0041] In some optional embodiments of the embodiment, the shapes of each two pipe piles 3 are the same. Here, the shapes of the pipe piles 3 are the same, for example, both are cylindrical or both are prismatic, and the shapes of the plug-in lock structure arranged on the outer circumferential surface of one pipe pile 3 and the plug-in lock structure arranged on the outer circumferential surface of another pipe pile 3 are the same (but not referring to the two plug-in lock structures arranged on the same pipe pile 3 must be the same).

[0042] In some optional embodiments of the embodiment, the shapes of the two plug-in lock structures arranged on the outer circumferential surface of each pipe pile 3 are different. Among them, one plug-in lock structure includes the female lock buckle 4, and the other plug-in lock structure includes the male lock buckle 5.

[0043] In some alternative embodiments of the present application, the two sets of plug-in structures on the outer circumferential surface of each pipe pile 3 are identical in shape. When the number of pipe piles 3 is N, and N is an even number, then in the two sets of plug-in structures of N / 2 pipe piles 3, each set of plug-in structures includes female lock 4, and in the two sets of plug-in structures of N / 2 pipe piles 3, each set of plug-in structures includes male lock 5.

[0044] In some alternative embodiments of the present application, the two sets of plug-in structures on the outer circumferential surface of each pipe pile 3 are identical in shape. When the number of pipe piles 3 is N, and N is an even number, then in the two sets of plug-in structures of N / 2 pipe piles 3, each set of plug-in structures includes female lock 4, and in the two sets of plug-in structures of N / 2 pipe piles 3, each set of plug-in structures includes male lock 5.

[0045] For the shape of the arrangement of the plurality of pipe piles 3 in the present application, there are various alternative forms, including but not limited to arranging into a square or circular or other shape cofferdam. When arranged into a square cofferdam (including a special square-square), then among these pipe piles 3, the pipe piles 3 arranged at each corner are respectively corner piles 31, and the pipe piles 3 arranged between adjacent two corner piles 31 are respectively middle piles 32. Then: the included angle of the two sets of plug-in structures of each corner pile 31 in the cross section perpendicular to the axis of the corner pile 31 is 90°; and the two sets of plug-in structures of each middle pile 32 are distributed on both sides of the axis of the middle pile 32 along the radial direction of the middle pile 32.

[0046] In alternative embodiments of the present application, the female lock 4 is cylindrical, and a lock groove with a "T" shaped cross section is arranged inside the female lock 4. The free end of the male lock 5 has a "T" shaped cross section that can be inserted into the lock groove of the female lock 4. The "T" shaped lock design increases the contact area between the female lock 4 and the male lock 5, improves the connection strength, and the plug-in design of the two facilitates quick installation and disassembly, improves test efficiency, and the cylindrical female lock 4 has a simple structure, easy to process and maintain, and reduces production costs.

[0047] In alternative embodiments of the present application, each of the above-mentioned plug-in plates 8 has an "L" shaped cross section. When pouring the water sealing slurry, the "L" shaped plug-in plate 8 design improves the stability and deformation resistance of the structure, effectively prevents slurry leakage, and ensures the accuracy of the test results.

[0048] In alternative embodiments of the present application, the pipe pile 3 is a steel pipe pile, but the pipe pile 3 in the present application is not limited to this, and the pipe pile 3 can also be made of reactive concrete or other materials.

[0049] Finally, it should be noted that: each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between each embodiment can be mutually referred to; the above embodiments in the specification are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A test device for water-stopping during pipe pile cofferdam construction, characterized in that: It includes a test chamber (1), a soil platform (2) located on the bottom surface inside the test chamber (1), and multiple pipe piles (3). The lower ends of each pipe pile (3) are inserted into the soil platform (2), and the multiple pipe piles (3) are arranged to form a cofferdam structure. Each of the pipe piles (3) has two sets of locking structures arranged at intervals along the circumference of the pipe pile (3) on its outer circumference. Each pair of adjacent pipe piles (3) is connected together by a locking assembly, the locking assembly comprising: A set of locking structures provided on one of the pipe piles (3) includes a female locking buckle (4) and a first locking block (6) provided on the outer peripheral surface of the pipe pile (3); A set of locking structures provided on another of the pipe piles (3) includes a sub-lock (5) and a second insert (7) provided on the outer peripheral surface of the pipe pile (3); And an interlocking assembly, including a bolt (91), a nut (92) and two insert plates (8); one end of one insert plate (8) is inserted into the insertion hole of the first insert block (6) and the lower end of the insert plate (8) is inserted into the soil platform (2) or abuts against the upper surface of the soil platform (2); one end of the other insert plate (8) is inserted into the insertion hole of the second insert block (7) and the lower end of the insert plate (8) is inserted into the soil platform (2) or abuts against the upper surface of the soil platform (2); the bolt (91) passes through the two insert plates (8) and is locked by the nut (92); under the constraint of the bolt (91), the two insert plates (8) are bent toward each other to form an injection space with an open upper end face and a closed lower end face and circumferential surface.

2. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: Each pair of the pipe piles (3) has the same shape.

3. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: The two sets of locking structures provided on the outer periphery of each of the pipe piles (3) have different shapes. Among the two sets of locking structures provided on the outer periphery of each of the pipe piles (3), one set of locking structures includes the female lock buckle (4), and the other set of locking structures includes the female lock buckle (5).

4. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: The two sets of locking structures on the outer periphery of each of the pipe piles (3) have the same shape. The number of pipe piles (3) is N, where N is an even number. In the two sets of locking structures of N / 2 pipe piles (3), each set of locking structures includes the female lock buckle (4), and in the two sets of locking structures of N / 2 pipe piles (3), each set of locking structures includes the female lock buckle (5).

5. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: In the two sets of locking structures provided on the outer periphery of each of the pipe piles (3), the insert plate (8) that is inserted into one set of the locking structures and the insert plate (8) that is inserted into the other set of the locking structures have different bending directions.

6. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: The multiple pipe piles (3) are arranged to form a rectangular cofferdam.

7. The test device for water-stopping construction of pipe pile cofferdams according to claim 6, characterized in that: Among the plurality of pipe piles (3), the pipe piles (3) arranged at each corner are called corner piles (31), and the pipe piles (3) arranged between two adjacent corner piles (31) are called center piles (32): The two sets of locking structures of each corner pile (31) have an included angle of 90° in a section perpendicular to the axis of the corner pile (31); the two sets of locking structures of each middle pile (32) are distributed radially on both sides of the axis of the middle pile (32).

8. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: The female latch (4) is cylindrical, and the interior of the female latch (4) is provided with a latch groove with a cross-section of "T". The free end of the female latch (5) has a cross-section of "T" that can be inserted into the latch groove.

9. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: Each of the insert plates (8) has an "L" shaped cross section.

10. The test device for water-stopping construction of pipe pile cofferdams according to claim 1, characterized in that: The pipe pile (3) is a steel pipe pile.

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