Supporting device for construction of deep foundation pit near subway

Abstract

The utility model discloses a supporting device for construction of a deep foundation pit near a subway, which relates to the technical field of deep foundation pit supporting and comprises a supporting seat, and the lower surface of the supporting seat is attached to the surface of the foundation pit; the number of the sliding grooves is two, and the two sliding grooves are formed in the upper surface of the supporting seat; the number of the sliding plates is two, and the lower surfaces of the two sliding plates are connected to the inner wall of the sliding groove in a sliding mode; and the number of the supporting plates is two, the opposite sides of the two supporting plates are fixedly connected to the opposite side of the sliding plate, and the opposite sides of the supporting plates are attached to the inner wall of the foundation pit. By arranging the supporting mechanism, the problems that in-place pouring is needed in a concrete pouring supporting mode, formwork erecting, reinforcing steel bar binding and maintenance (generally 7-14 days are needed to achieve strength) are needed in the in-place pouring, the working procedures are tedious, foundation pit excavation and subsequent construction progress are affected, and subsequent dismantling is troublesome are solved.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit support technology, specifically a construction support device for deep foundation pits near subway lines. Background Technology

[0002] Deep foundation pits adjacent to subway lines refer to foundation pit projects with a depth of ≥5 meters that are close to subway lines. During construction, deformation must be strictly controlled to avoid affecting the structural safety and operation of the subway. Commonly used techniques include retaining structures (such as diaphragm walls), monitoring systems (for real-time displacement monitoring), and zonal excavation to ensure a safe distance between the foundation pit and the subway and to maintain soil stability. Support for deep foundation pits adjacent to subway lines is crucial. It can balance the lateral pressure of the soil, prevent the foundation pit from deforming and collapsing, and prevent the subway structure from being affected by soil displacement. Reasonable support can control the displacement of the retaining structure, reduce disturbance to the surrounding strata, and ensure that the settlement of the subway line is within a safe range. It is a key measure to ensure the safety of the foundation pit and the subway, and the support system must be designed in combination with geological and subway conditions.

[0003] The common method for supporting deep foundation pits on the market is to use concrete pouring, which requires on-site pouring. On-site pouring requires formwork, steel bar binding, and curing (usually 7-14 days to reach strength). The process is complicated, which affects the excavation of the foundation pit and the progress of subsequent construction. Moreover, subsequent demolition is also troublesome. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a support device for deep foundation pit construction near subway lines. This device has the advantage of quickly supporting the inner wall of the deep foundation pit, and solves the problem of concrete pouring support methods, which require on-site pouring. On-site pouring requires formwork, steel bar binding, and curing (usually requiring 7-14 days to reach strength), which are cumbersome procedures that affect the excavation and subsequent construction progress of the foundation pit, and are also troublesome to dismantle later.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a construction support device for deep foundation pits near subway lines, comprising,

[0006] Foundation pit;

[0007] Support mechanism: The support mechanism is disposed inside the foundation pit, and the support mechanism includes:

[0008] Support base: The lower surface of the support base is in contact with the surface of the foundation pit;

[0009] Sliding groove: Two sliding grooves are provided, and the two sliding grooves are formed on the upper surface of the support base; Sliding plate: Two sliding plates are provided, and the lower surfaces of the two sliding plates are slidably connected to the inner wall of the sliding groove;

[0010] Support plate: Two support plates are provided, and the two support plates are fixedly connected to the opposite side of the sliding plate on opposite sides. The opposite side of the support plates is in contact with the inner wall of the pit.

[0011] In a preferred embodiment of this utility model, a pushing assembly is provided on one side of the support plate, and four pushing assemblies are provided, the four pushing assemblies comprising:

[0012] First fastener: The side of the first fastener closest to the support plate is fixedly connected to the opposite side of the support plate;

[0013] Push rod: One end of the push rod is rotatably connected to the inner wall of the first fixing member via a rotating shaft;

[0014] Second fixing component: The inner wall of the second fixing component is rotatably connected to the other end of the push rod via a rotating shaft.

[0015] In a preferred embodiment of this invention, a driving assembly is provided on the outer surface of the second fixing member, the driving assembly comprising:

[0016] Transmission sleeve: The outer surface of the transmission sleeve is fixedly connected to the outer surface of the second fixing member;

[0017] First threaded rod: The outer surface of the first threaded rod is rotatably connected to the inner wall of the transmission sleeve by a thread, and the lower end face of the first threaded rod is rotatably connected to the upper surface of the support seat by a bearing;

[0018] Servo motor: The output end of the servo motor is fixedly connected to the upper end face of the first threaded rod.

[0019] In a preferred embodiment of this invention, a support frame is provided on the upper surface of the support base, the lower end face of the support frame is fixedly connected to the upper surface of the support base, the upper surface of the support frame is fixedly connected to the lower surface of the servo motor, and the inner wall of the support frame is rotatably connected to the outer surface of the output end of the servo motor through a bearing.

[0020] In a preferred embodiment of this invention, a stabilizing component is provided on the lower side of the support base. Four stabilizing components are provided, and the four stabilizing components include:

[0021] Insert rod: The insert rod is disposed on the lower side of the support base;

[0022] Through groove: The through groove is formed in the inner wall of the support base.

[0023] As a preferred embodiment of this utility model, the upper end face of the insertion rod is provided with a rotating assembly, and four rotating assemblies are provided, the four rotating assemblies comprising:

[0024] Second threaded rod: The lower end face of the second threaded rod is fixedly connected to the upper end face of the insertion rod;

[0025] Screw sleeve: The inner wall of the screw sleeve is rotatably connected to the outer surface of the second threaded rod via a thread;

[0026] Connecting rod: The lower surface of the connecting rod is rotatably connected to the upper end face of the second threaded rod through a bearing, and the side of the connecting rod near the transmission sleeve is fixedly connected to the outer surface of the transmission sleeve.

[0027] As a preferred embodiment of this utility model, the outer surface of the threaded sleeve is provided with a third fixing member, and a plurality of the third fixing members are provided. The lower end face of the plurality of the third fixing members is fixedly connected to the upper surface of the support base, and the upper end of the third fixing member is fixedly connected to the outer surface of the threaded sleeve.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] 1. This utility model solves the problem of the concrete pouring support method, which requires on-site pouring, which involves formwork, steel bar binding, and curing (usually 7-14 days to reach strength). The process is cumbersome, affecting the excavation of the foundation pit and the progress of subsequent construction, and the subsequent demolition is also troublesome. By setting up a support mechanism, the spacing between the support plates on both sides can be controlled to achieve the effect of supporting foundation pits of different widths.

[0030] 2. By setting up a pushing component and a driving component, this utility model can drive the support plate to move to both sides, and the cooperation between the first threaded rod and the transmission sleeve can realize the self-locking function, thereby improving the stability of the support plate for supporting both sides of the foundation pit.

[0031] 3. By setting up a stabilizing component, a rotating component, and a third fixing component, this utility model enables the device to support the inner wall of the foundation pit while the insertion rod enters the soil, thereby improving the stability of the device and making the device support the foundation pit more stable. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 A schematic diagram of the three-dimensional structure of the support mechanism and support frame;

[0034] Figure 3 A schematic diagram of the three-dimensional structure of the driving and propulsion components;

[0035] Figure 4 A schematic diagram of the exploded structure of the stabilizing component, the rotating component, and the third fixing component.

[0036] In the diagram: 1. Foundation pit; 2. Support mechanism; 21. Support base; 22. Sliding groove; 23. Sliding plate; 24. Support plate; 3. Pushing assembly; 31. First fixing component; 32. Push rod; 33. Second fixing component; 4. Drive assembly; 41. Transmission sleeve; 42. First threaded rod; 43. Servo motor; 5. Support frame; 6. Stabilizing assembly; 61. Insert rod; 62. Through groove; 7. Rotating assembly; 71. Second threaded rod; 72. Threaded sleeve; 73. Connecting rod; 8. Third fixing component. Detailed Implementation

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0040] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0041] Example 1

[0042] Reference Figure 1-4 This is the first embodiment of the present invention, providing a construction support device for deep foundation pits near subway stations, comprising:

[0043] Excavation Pit 1;

[0044] Support mechanism 2: Support mechanism 2 is installed inside the foundation pit 1, and support mechanism 2 includes:

[0045] Support 21: The lower surface of support 21 is in contact with the surface of the pit 1;

[0046] Sliding groove 22: Two sliding grooves 22 are provided, and the two sliding grooves 22 are opened on the upper surface of the support base 21; Sliding plate 23: Two sliding plates 23 are provided, and the lower surfaces of the two sliding plates 23 are slidably connected to the inner wall of the sliding groove 22;

[0047] Support plate 24: There are two support plates 24. The opposite side of the two support plates 24 is fixedly connected to the opposite side of the sliding plate 23. The opposite side of the support plates 24 is in contact with the inner wall of the pit 1.

[0048] Specifically, by setting up the support mechanism 2, the spacing between the two support plates 24 can be controlled, thereby achieving the effect of supporting the foundation pit 1 of different widths.

[0049] Furthermore, by fitting the support base 21 into contact with the bottom of the pit 1, the support plate 24 is driven to move to both sides of the pit 1. The support plate 24 moves along the inner wall of the sliding groove 22 via the sliding plate 23 until the opposite side of the support plate 24 is tightly fitted with the inner wall of the pit 1.

[0050] Example 2

[0051] The second embodiment of this utility model provides a construction support device for deep foundation pits near subway stations. A pushing component 3 is provided on one side of the support plate 24. Four pushing components 3 are provided, and the four pushing components 3 include:

[0052] First fastener 31: The side of the first fastener 31 closest to the support plate 24 is fixedly connected to the opposite side of the support plate 24;

[0053] Push rod 32: One end of push rod 32 is rotatably connected to the inner wall of the first fixing member 31 via a rotating shaft;

[0054] Second fixing member 33: The inner wall of the second fixing member 33 is rotatably connected to the other end of the push rod 32 via a rotating shaft;

[0055] The outer surface of the second fastener 33 is provided with a driving assembly 4, which includes:

[0056] Transmission sleeve 41: The outer surface of transmission sleeve 41 is fixedly connected to the outer surface of the second fixing member 33;

[0057] First threaded rod 42: The outer surface of the first threaded rod 42 is rotatably connected to the inner wall of the transmission sleeve 41 by a thread, and the lower end face of the first threaded rod 42 is rotatably connected to the upper surface of the support seat 21 by a bearing;

[0058] Servo motor 43: The output end of servo motor 43 is fixedly connected to the upper end face of the first threaded rod 42.

[0059] Specifically, by setting the drive component 4 and the push component 3, the support plate 24 can be driven to move to both sides, and the cooperation between the first threaded rod 42 and the transmission sleeve 41 can realize the self-locking function, thereby improving the stability of the support plate 24 in supporting both sides of the pit 1.

[0060] Furthermore, the servo motor 43 drives the first threaded rod 42 to rotate, and the first threaded rod 42 drives the transmission sleeve 41 to move downward through the thread. The transmission sleeve 41 then drives the second fixing member 33, so that the second fixing member 33 pushes the first fixing member 31 through the push rod 32. The first fixing member 31 then pushes the support plate 24 to move to both sides.

[0061] Example 3

[0062] The second embodiment of this utility model provides a construction support device for deep foundation pits near subway lines. A stabilizing component 6 is provided on the lower side of the support base 21. Four stabilizing components 6 are provided, and the four stabilizing components 6 include:

[0063] Insert rod 61: Insert rod 61 is located on the underside of support base 21;

[0064] Through groove 62: Through groove 62 is formed in the inner wall of support base 21;

[0065] The upper end face of the insertion rod 61 is provided with a rotating assembly 7, and four rotating assemblies 7 are provided. The four rotating assemblies 7 include:

[0066] Second threaded rod 71: The lower end face of the second threaded rod 71 is fixedly connected to the upper end face of the insert rod 61;

[0067] Screw sleeve 72: The inner wall of the screw sleeve 72 is rotatably connected to the outer surface of the second threaded rod 71 by a thread;

[0068] Connecting rod 73: The lower surface of connecting rod 73 is rotatably connected to the upper end face of second threaded rod 71 through a bearing, and the side of connecting rod 73 near transmission sleeve 41 is fixedly connected to the outer surface of transmission sleeve 41;

[0069] The outer surface of the threaded sleeve 72 is provided with a third fixing member 8, and there are several third fixing members 8. The lower end face of several third fixing members 8 is fixedly connected to the upper surface of the support base 21, and the upper end of the third fixing member 8 is fixedly connected to the outer surface of the threaded sleeve 72.

[0070] Specifically, by setting up a stabilizing component 6 and a rotating component 7, the device supports the inner wall of the foundation pit 1 while the insertion rod 61 enters the soil, improving the stability of the device and making the device support the foundation pit 1 more firmly.

[0071] Furthermore, by moving the transmission sleeve 41 downwards, the transmission sleeve 41 can drive the connecting rod 73 to move downwards together. The connecting rod 73 then drives the second threaded rod 71, causing the outer surface of the second threaded rod 71 to mesh with the inner wall of the threaded sleeve 72. The second threaded rod 71 is forced to rotate. At the same time, the second threaded rod 71 can drive the insertion rod 61 to move downwards while rotating, so that the insertion rod 61 enters the soil.

[0072] Working principle:

[0073] By fitting the support base 21 into contact with the bottom of the pit 1, the servo motor 43 drives the first threaded rod 42 to rotate. The first threaded rod 42 drives the transmission sleeve 41 to move downward through the thread. The transmission sleeve 41 then drives the second fixing member 33, so that the second fixing member 33 pushes the first fixing member 31 through the push rod 32. The first fixing member 31 then pushes the support plate 24 to move to both sides. The support plate 24 moves along the inner wall of the sliding groove 22 through the sliding plate 23 until the opposite side of the support plate 24 is tightly fitted with the inner wall of the pit 1. At the same time, the transmission sleeve 41 can drive the connecting rod 73 to move downward together. The connecting rod 73 then drives the second threaded rod 71, so that the outer surface of the second threaded rod 71 meshes with the inner wall of the threaded sleeve 72. The second threaded rod 71 is forced to rotate. At the same time, the second threaded rod 71 can drive the insertion rod 61 to move downward while rotating, so that the insertion rod 61 enters the soil.

[0074] In summary, the combination of foundation pit 1, support mechanism 2, pushing component 3, driving component 4, support frame 5, stabilizing component 6, rotating component 7, and third fixing component 8 solves the problem of concrete pouring support methods that require on-site pouring. On-site pouring requires formwork, steel bar binding, and curing, which usually takes 7-14 days to reach strength. This process is cumbersome, affects the excavation of foundation pit and the progress of subsequent construction, and makes subsequent demolition troublesome.

[0075] The motor and threaded rod used in this application can be additionally equipped with protective measures that are common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0076] It should be noted that (motor, threaded rod) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the device, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0077] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0078] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0079] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A construction support device for deep foundation pits near subway lines, characterized in that: include, Foundation pit (1); Support mechanism (2): The support mechanism (2) is disposed inside the foundation pit (1), and the support mechanism (2) includes: Support base (21): The lower surface of the support base (21) is in contact with the surface of the pit (1); Sliding groove (22): Two sliding grooves (22) are provided, and the two sliding grooves (22) are opened on the upper surface of the support base (21); Sliding plate (23): Two sliding plates (23) are provided, and the lower surfaces of the two sliding plates (23) are slidably connected to the inner wall of the sliding groove (22); Support plate (24): There are two support plates (24). The two support plates (24) are fixedly connected to the opposite side of the sliding plate (23) on opposite sides. The opposite side of the support plate (24) is in contact with the inner wall of the pit (1).

2. The support device for deep foundation pit construction near subway lines according to claim 1, characterized in that: A pushing assembly (3) is provided on one side of the support plate (24), and four pushing assemblies (3) are provided. The four pushing assemblies (3) include: First fastener (31): The side of the first fastener (31) closest to the support plate (24) is fixedly connected to the opposite side of the support plate (24); Push rod (32): One end of the push rod (32) is rotatably connected to the inner wall of the first fixing member (31) via a rotating shaft; Second fixing member (33): The inner wall of the second fixing member (33) is rotatably connected to the other end of the push rod (32) via a rotating shaft.

3. The support device for deep foundation pit construction near subway lines according to claim 2, characterized in that: The outer surface of the second fixing member (33) is provided with a driving assembly (4), the driving assembly (4) comprising: Transmission sleeve (41): The outer surface of the transmission sleeve (41) is fixedly connected to the outer surface of the second fixing member (33); First threaded rod (42): The outer surface of the first threaded rod (42) is rotatably connected to the inner wall of the transmission sleeve (41) by a thread, and the lower end face of the first threaded rod (42) is rotatably connected to the upper surface of the support seat (21) by a bearing; Servo motor (43): The output end of the servo motor (43) is fixedly connected to the upper end face of the first threaded rod (42).

4. The support device for deep foundation pit construction near subway lines according to claim 3, characterized in that: The upper surface of the support base (21) is provided with a support frame (5), the lower end face of the support frame (5) is fixedly connected to the upper surface of the support base (21), the upper surface of the support frame (5) is fixedly connected to the lower surface of the servo motor (43), and the inner wall of the support frame (5) is rotatably connected to the outer surface of the output end of the servo motor (43) through a bearing.

5. The support device for deep foundation pit construction near subway lines according to claim 1, characterized in that: A stabilizing component (6) is provided on the lower side of the support base (21). Four stabilizing components (6) are provided, and the four stabilizing components (6) include: Insert rod (61): The insert rod (61) is disposed on the lower side of the support base (21); Through groove (62): The through groove (62) is formed on the inner wall of the support base (21).

6. The support device for deep foundation pit construction near subway lines according to claim 5, characterized in that: The upper end face of the insertion rod (61) is provided with a rotating assembly (7), and four rotating assemblies (7) are provided. The four rotating assemblies (7) include: Second threaded rod (71): The lower end face of the second threaded rod (71) is fixedly connected to the upper end face of the insert rod (61); Screw sleeve (72): The inner wall of the screw sleeve (72) is rotatably connected to the outer surface of the second threaded rod (71) by a thread; Connecting rod (73): The lower surface of the connecting rod (73) is rotatably connected to the upper end face of the second threaded rod (71) through a bearing, and the side of the connecting rod (73) near the transmission sleeve (41) is fixedly connected to the outer surface of the transmission sleeve (41).

7. A construction support device for deep foundation pits near subway lines according to claim 6, characterized in that: The outer surface of the threaded sleeve (72) is provided with a third fixing member (8), and there are several third fixing members (8). The lower end face of several third fixing members (8) is fixedly connected to the upper surface of the support base (21), and the upper end of the third fixing member (8) is fixedly connected to the outer surface of the threaded sleeve (72).

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