A soft soil subgrade reinforcing device

Abstract

The utility model discloses a kind of soft soil subgrade reinforcing devices, it is related to building construction technical field, including pile body, the bottom of pile body is equipped with sharp cone end, pile body is multi-faceted column structure, the lower part inboard of pile body is equipped with cavity, the outside of cavity and be located on each stake surface are equipped with the expansion plate that can be unfolded outward;The cross section of expansion plate is wedge-shaped structure, the upper part outside of expansion plate is rotationally connected on pile body by pivot, so that the outside surface of expansion plate is flush with the surface of pile body;The middle part of pile body is screw-connected with lead screw, the top of lead screw is equipped with hammering part, the bottom of lead screw is located in cavity and is equipped with conical part for outwardly spreading expansion plate.The utility model can reduce the use amount of pile body to soft soil subgrade reinforcement, reduce the cost of soft soil subgrade reinforcement, in addition, can improve the construction efficiency of soft soil subgrade reinforcement, and the stability of soft soil subgrade reinforcement.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building construction, specifically relates to a soft soil roadbed reinforcing device. BACKGROUND

[0002] The soft soil roadbed refers to the roadbed in special area, and is mostly present in the areas along rivers, seas and oceans, and has the characteristics of large water content, poor permeability and low natural strength, and the foundation stability is poor, and the commonly used treatment measure of the soft soil foundation is to replace the surface soft soil layer, then wood piles are punched in, and drainage sand cushion is laid to reinforce, and then the diameter of the punched wood pile is limited, in order to provide stability, a large number of wood piles can only be punched in, in this way, on the one hand, the construction amount is large, and on the other hand, the reinforcement cost of the soft soil roadbed is increased, therefore, we design an expandable soft soil roadbed reinforcing pile. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a soft soil roadbed reinforcing device that can reduce the cost of soft soil roadbed reinforcement and improve the stability of soft soil roadbed reinforcement.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A soft soil roadbed reinforcing device is designed, which comprises a pile body, the bottom of the pile body is provided with a sharp cone end, the pile body is a multi-surface column structure, the lower inner side of the pile body is provided with a cavity, the outer side of the cavity and each pile surface are provided with an expandable expansion plate; the cross section of the expansion plate is in a wedge-shaped structure, the upper outer side of the expansion plate is rotationally connected to the pile body through a rotating shaft, so that the outer side of the expansion plate is flush with the surface of the pile body; a lead screw is threadedly connected to the middle part of the pile body, a hammering part is arranged at the top of the lead screw, and a conical part for outwardly spreading the expansion plate is arranged at the bottom of the lead screw in the cavity.

[0006] Further, a fixed nut matched with the thread of the lead screw is fixedly arranged at the top of the pile body.

[0007] Further, a nut is fixedly arranged at the bottom of the hammering part, and a movable nut is arranged between the nut and the fixed nut, and the movable nut is threadedly connected to the lead screw.

[0008] Further, a limiting block is fixedly arranged on the pile surface of the pile body and above the expansion plate.

[0009] Further, a connecting rod is arranged, the two ends of the connecting rod are provided with first plug-in grooves for plugging the lead screw, the top of the plurality of pile bodies is connected through the connecting rod, and a net-shaped overall structure is formed.

[0010] Further, the partition plate is connected between two adjacent pile bodies, the pile surface of the pile body is provided with a second plug-in slot matched with the thickness of the partition plate, and the soft soil subgrade forms an independent unit structure under the isolation of the partition plate.

[0011] Compared with the prior art, the soft soil subgrade reinforcing device has the advantages that: the use amount of the pile body for reinforcing the soft soil subgrade is reduced, the cost of reinforcing the soft soil subgrade is reduced, and the construction efficiency and stability of reinforcing the soft soil subgrade are improved.

[0012] The expansion plate arranged on the pile body can expand horizontally, the supporting area of a single pile body is increased, the supporting strength of the soft soil subgrade reinforcing pile is increased on the one hand, and on the other hand, the use amount of the pile body is reduced under the premise of the same supporting strength, the pile bodies can be connected into an integrated structure after construction, the whole pile body is connected into a net-shaped whole structure, the reinforcement of the soft soil subgrade is further improved, and the soft soil subgrade is more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:

[0014] Figure 1 is a schematic view of the internal structure of the present application in embodiment 1;

[0015] Figure 2 is a schematic view of the internal structure of the present application in embodiment 1;

[0016] Figure 3 is a schematic view of the internal structure of the present application in embodiment 1;

[0017] Figure 4 is a schematic view of the internal structure of the present application in embodiment 2;

[0018] Figure 5 is a schematic view of the internal structure of the present application in embodiment 2;

[0019] Figure 6 is a schematic view of the internal structure of the present application in embodiment 2;

[0020] In the drawings, 1 is a pile body, 11 is a pointed end, 12 is a fixed nut, 13 is a nut, 14 is a movable nut, 15 is a rotating shaft, 16 is a limiting block, 2 is a lead screw, 21 is a hammering part, 22 is a conical part, 3 is a cavity, 4 is an expansion plate, 5 is a connecting rod, 51 is a first plug-in slot, 6 is a partition plate, and 7 is a second plug-in slot. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The structural features of the present application will be described in detail in conjunction with the drawings of the specification.

[0025] Referring to Figures 1-3 A soft soil subgrade reinforcing device, comprising a pile body 1, the bottom of the pile body 1 is provided with a sharp cone end 11, which facilitates the pile body 1 to better enter the soft soil subgrade, the pile body 1 is a multi-surface column structure, the lower inner side of the pile body 1 is provided with a cavity 3, the outer side of the cavity 3 and located on each pile surface is provided with an expandable plate 4 which can be expanded outward, wherein the cross section of the expandable plate 4 is wedge-shaped structure, the upper outer side of the expandable plate 4 is rotatably connected to the pile body 1 through a rotating shaft 15, so that the outer side of the expandable plate 4 is flush with the surface of the pile body 1, during the process of the pile body 1 entering the soft soil subgrade, the expandable plate 4 is in a contracted state, which can make the pile body 1 better enter the soft soil subgrade.

[0026] In order to make the expansion plate 4 unfold, the middle of the pile body 1 is threadedly connected with a lead screw 2, the top of the lead screw 2 is provided with a hammering part 21, the pile body 1 can be hammered into the soft soil subgrade through the hammering part 21, the bottom of the lead screw 2 is provided with a tapered part 22 in the cavity 3 for outwardly expanding the expansion plate 4, after the pile body 1 is hammered into the soft soil subgrade to a set depth, the lead screw 2 is rotated to make the tapered part 22 rise, the tapered part 22 after rising can expand the expansion plate 4, the bottom of the expansion plate 4 is outwardly expanded, at this time, the pile body 1 is continuously hammered, the expansion plate 4 is naturally opened under the resistance of the soil and expands outwardly, is inserted into the surrounding soft soil subgrade, and plays a role of increasing the supporting area of the pile body 1, in order to facilitate the rotation of the lead screw 2, the top of the pile body 1 is fixedly provided with a fixed nut 12 matched with the thread of the lead screw 2, the bottom of the hammering part 21 is fixedly provided with a screw cap 13, the screw cap 13 and the fixed nut 12 are provided with a movable nut 14, the movable nut 14 is threadedly connected with the lead screw 2, in order to prevent the expansion plate 4 from being excessively turned over, a limiting block 16 is fixedly arranged on the pile surface of the pile body 1 and above the expansion plate 4, so that the expansion plate 4 is turned over by 90 degrees at most and is in a horizontal state.

[0027] The soft soil subgrade reinforcing device has the advantages of simple structure, increased supporting area of a single pile body 1, improved stability of soft soil subgrade reinforcement, reinforced supporting strength of the soft soil subgrade reinforcing pile, reduced use quantity of the pile body 1 in use, improved soft soil subgrade reinforcement, and more stable and reliable soft soil subgrade.

[0028] The connecting rod 5 is provided with a first insertion groove 51 for inserting the lead screw 2 and is fixed through the movable nut 14, the top portions of a plurality of pile bodies 1 are connected through the connecting rod 5 to form a net-shaped overall structure, after the pile bodies 1 are all hammered into the soft soil subgrade, the pile bodies 1 are connected into an integrated structure through the connecting rod 5, all the pile bodies 1 are connected into a net-shaped overall structure, the soft soil subgrade reinforcement is further improved, the soft soil subgrade is more stable, in the process of laying the soft soil subgrade, the pile bodies 1 are hammered into the soft soil subgrade one by one, the expansion plates 4 on the pile bodies 1 are all expanded, then all the pile bodies 1 are connected into an integrated structure through the connecting rod 5 to form a net-shaped structure, and finally a paving layer is laid on the top of the pile body 1 to cover the top of the pile body 1.

[0029] Example 2

[0030] Reference Figure 4- As 6, as another preferred embodiment of the utility model, differs from example 1, still include the partition 6 that is connected between two adjacent pile bodies 1, the pile surface of pile body 1 is equipped with the second insertion slot 7 with the thickness of partition 6 adaptation, under the isolation of partition 6 between adjacent multiple pile bodies 1, make soft soil subgrade form independent unit structure. The setting of partition 6 can divide soft soil subgrade into unit, make it cannot directly connect each other, can further reduce the flowability of soft soil subgrade, make soft soil subgrade more stable and reliable.

[0031] The above only is the preferred embodiment of the utility model and does not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A soft soil subgrade reinforcement device, comprising a pile body (1), wherein the bottom of the pile body (1) is provided with a pointed conical end (11), characterized in that, The pile body (1) is a multi-faceted column structure. The lower inner side of the pile body (1) is provided with a cavity (3). The outer side of the cavity (3) and on each pile surface are provided with an expansion plate (4) that can be unfolded outward. The expansion plate (4) has a wedge-shaped cross-section. The upper outer side of the expansion plate (4) is rotatably connected to the pile body (1) through a rotating shaft (15), so that the outer side of the expansion plate (4) is flush with the surface of the pile body (1). The pile body (1) is threaded with a screw rod (2) in the middle. The top of the screw rod (2) is provided with a hammering part (21), and the bottom of the screw rod (2) is provided with a tapered part (22) for expanding the expansion plate (4) outward in the cavity (3).

2. The soft soil subgrade reinforcement device according to claim 1, characterized in that, The top of the pile body (1) is fixed with a fixing nut (12) that matches the thread of the screw rod (2).

3. The soft soil subgrade reinforcement device according to claim 1, characterized in that, The bottom of the hammering part (21) is fixedly provided with a nut (13), and a movable nut (14) is provided between the nut (13) and the fixed nut (12). The movable nut (14) is threadedly connected to the lead screw (2).

4. The soft soil subgrade reinforcement device according to claim 1, characterized in that, A limiting block (16) is fixedly provided on the pile surface of the pile body (1) and above the expansion plate (4).

5. A soft soil subgrade reinforcement device according to claim 1, characterized in that, It also includes a connecting rod (5), the two ends of which are provided with a first insertion groove (51) for inserting the lead screw (2). The tops of multiple piles (1) are connected through the connecting rod (5) to form a mesh-like overall structure.

6. A soft soil subgrade reinforcement device according to claim 1, characterized in that, It also includes a partition (6), which is connected between two adjacent piles (1). The pile surface of the pile (1) is provided with a second insertion groove (7) that is adapted to the thickness of the partition (6). Under the isolation of the partition (6), the soft soil subgrade forms an independent unit structure between multiple adjacent piles (1).

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