Novel steel support supporting structure capable of intelligently controlling supporting position

Abstract

The utility model provides a novel steel support timbering structure capable of intelligently controlling a support position, which comprises an enclosure structure, the inner wall of the enclosure structure is slidably connected with multiple layers of bidirectional #-shaped steel supports arranged at intervals, and the multiple layers of bidirectional #-shaped steel supports realize longitudinal connection and longitudinal movement through a position adjusting device. A displacement sensor is arranged on the outer wall of the enclosure structure and connected with a control system to be used for obtaining lateral displacement data of the enclosure structure, the length of the position adjusting device is controlled according to the lateral displacement data of the enclosure structure, and then the depth of the two-way #-shaped steel support is adjusted. The arrangement position of the internal horizontal support can be intelligently adjusted according to the lateral deformation of the support enclosure structure, so that the lateral deformation of the enclosure structure is intelligently optimized, and the safety of a foundation pit support system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a novel steel support structure with intelligently controlled support positions. Background Art

[0002] In recent years, with the acceleration of urbanization and the continuous advancement of large-scale infrastructure projects, the development and utilization of urban underground space has become increasingly extensive and intensive. Against this backdrop, the requirements for foundation pit support technology have also increased. As foundation pits continue to grow in size and depth, ensuring their overall safety and stability has become a major challenge, and the importance of support structures in the excavation process has become increasingly prominent.

[0003] In foundation pit construction, the internal forces of the surrounding soil, support, and retaining structures constantly change as excavation progresses, and the locations of maximum stress and deformation in the pit also dynamically adjust accordingly. Therefore, during construction, the placement of support structures must be flexibly adjusted to prevent excessive pit deformation and thus avoid safety accidents.

[0004] Foundation pit support structures typically consist of a retaining structure and a support system. Steel supports, as a key component of the retaining structure, offer exceptional load-bearing capacity and stability. However, during the excavation and support process of deep foundation pits, due to the depth of the pit, the stress and deformation of the retaining structure continuously change with increasing excavation depth and the installation of internal supports layer by layer. Traditional internal supports are fixed in position and cannot be adjusted according to the deformation of the retaining structure, which poses significant limitations in practical engineering.

[0005] In addition, if the design of the support system is unreasonable, it may also lead to the problem of local stress concentration in the foundation pit support system, resulting in a large difference between the actual deformation during construction and the design value, and may even cause construction safety hazards, and ultimately lead to major engineering accidents caused by excessive deformation of the support structure. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides a new steel support structure with intelligent control of support position, which can adjust the layout position of internal horizontal supports according to the lateral deformation of the supporting enclosure structure, thereby optimizing the lateral deformation of the enclosure structure and ensuring the safety of the foundation pit support system.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of steel support structure with intelligent control of support position, including a retaining structure, the inner wall of the retaining structure is connected with multiple layers of spaced-apart bidirectional cross-shaped steel supports, the multiple layers of bidirectional cross-shaped steel supports are longitudinally connected and longitudinally moved through a position adjustment device, a displacement sensor is set on the outer wall of the retaining structure, and the displacement sensor and the position adjustment device are connected to the control system.

[0008] Furthermore, the bidirectional cross-shaped steel support includes four cross-shaped support rods, and connecting ends are provided at both ends of each support rod, and the connecting ends are slidably connected to the enclosure structure.

[0009] Furthermore, guide rails are longitudinally arranged on the inner wall of the enclosure structure, the number and position of the guide rails match the number and position of the support rods, and multiple groups of reserved holes are opened on both sides of the guide rails; position fixing devices are arranged on both sides of the connecting end, and the position fixing devices are snap-connected with the reserved holes of the guide rails.

[0010] Furthermore, the position fixing device is two limiting balls connected by a spring, and the two limiting balls are correspondingly engaged with the reserved holes on both sides of the guide rail.

[0011] Furthermore, the diameter of the limiting ball is smaller than half of the inner diameter of a single support rod of the bidirectional cross steel support.

[0012] Furthermore, a pulley is provided on the top of the connecting end.

[0013] Furthermore, the position adjustment device includes a support frame and a support position adjuster. The support frame is supported on the top of the enclosure structure. The support frame and the top bidirectional cross-shaped steel support and the multiple internal top bidirectional cross-shaped steel supports are connected through the support position adjuster. The pressure sensor is arranged on the support position adjuster. The pressure sensor is connected to the control system for monitoring the axial force of the support position adjuster.

[0014] Furthermore, the support position regulator is also provided with a drive motor, a length adjustment device, and a screw seat. The drive motor is connected to the screw seat through the length adjustment device, and the control system adjusts the extension length of the screw seat by controlling the length adjustment device through the opening and closing of the drive motor.

[0015] Furthermore, the length adjustment device includes a force transmission screw and a screw nut. The driving motor is connected to one end of the force transmission screw through a coupling. The force transmission screw is fixed in the support position adjuster through a bearing seat. The other end of the force transmission screw is connected to the screw seat through a screw nut. The pressure sensor is arranged between the screw seat and the screw nut.

[0016] Furthermore, the control system includes an axial force control panel, a displacement collector and control software. The displacement sensor is connected to the displacement collector to measure the lateral displacement of the enclosure structure; the position adjustment device is connected to the axial force control panel through a wire; the axial force control panel and the displacement collector are connected to the control software through a wire. The control software is used to obtain the lateral displacement data of the enclosure structure and provide an opening and closing signal for the axial force control panel.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] This utility model proposes a new steel support structure with intelligent support position control, improving upon traditional foundation pit support structures. By integrating displacement sensors, pressure sensors, a control system, and a position adjustment device, it achieves real-time monitoring and intelligent response to lateral deformation of the retaining structure. Based on data provided by the displacement sensors, the control system automatically adjusts the axial force and length of the position adjustment device, thereby intelligently adjusting the longitudinal position of the bidirectional cross-shaped steel supports to accommodate the deformation requirements of the retaining structure.

[0019] The bidirectional cross-shaped steel support of the utility model adopts a cross-shaped support rod design of four, which enhances the overall stability and bearing capacity of the support structure. The connecting end of the support rod is slidably connected to the surrounding structure, which is convenient for position adjustment according to needs.

[0020] The position adjustment device of the utility model includes components such as a support frame, a support position regulator, a drive motor, a length adjustment device and a screw seat, which can realize precise adjustment of the bidirectional cross-shaped steel support position; the pressure sensor integrated inside the support position regulator can monitor the axial force changes in real time to ensure the accuracy and safety of the adjustment process.

[0021] The setting of the guide rail in the utility model enables the bidirectional cross-shaped steel support to slide and adjust its position along a predetermined track, and the position fixing device (such as a limit ball connected by a spring) is engaged with the reserved hole of the guide rail, thereby fixing and locking the position of the bidirectional cross-shaped steel support and improving the stability and reliability of the support structure.

[0022] The control system of the present invention includes components such as an axial force control panel, a displacement collector and control software, which realize comprehensive monitoring and intelligent control of the support structure status. The control software reads the lateral deformation data of the enclosure structure, compares the measured value with the design value, controls the opening and closing of the axial force control panel, and further controls the opening and closing of the support position regulator. Ultimately, the length of the support position regulator is changed by adjusting the axial force of the support position regulator, thereby adjusting the position of the bidirectional cross steel support. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model patent;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of an embodiment of the utility model patent;

[0025] Figure 3 This is a cross-sectional structural diagram of the support position adjuster of an embodiment of the utility model patent;

[0026] Figure 4 This is a vertical view of the limiting ball of the embodiment of the utility model patent;

[0027] Figure 5 This is a top view of the limiting ball structure of the embodiment of the utility model patent;

[0028] In the attached figure: 1. Enclosure structure; 2. Guide rail; 3. Limiting ball; 4. Displacement sensor; 5. Bidirectional cross-shaped steel support; 6. Support position adjuster; 7. Support frame; 8. Pulley; 9. Wire; 10. Axial force control panel; 11. Displacement collector; 12. Control software; 13. Drive motor; 14. Coupling; 15. Bearing seat; 16. Force transmission screw; 17. Screw nut; 18. Pressure sensor; 19. Screw seat; 20. External steel pipe; 21. Spring. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 、 2 As shown, the utility model provides a new type of steel support and retaining structure with intelligent control of support position, including a retaining structure 1, a guide rail 2, a limit ball 3, a displacement sensor 4, a bidirectional cross-shaped steel support 5, a support position adjuster 6, a support frame 7, a pulley 8, a wire 9, an axial force control panel 10, a displacement collector 11, a control software 12, a drive motor 13, a coupling 14, a bearing seat 15, a force transmission screw 16, a screw nut 17, a pressure sensor 18, a screw seat 19, an external steel pipe 20 and a spring 21.

[0031] Among them, the retaining structure 1 is used to support the soil around the foundation pit; multiple groups of reserved holes are set on both sides of the guide rail 2, and the guide rail 2 is longitudinally installed on the inner wall of the retaining structure 1. The number and position of the guide rail 2 match the number and position of the connecting ends of the two-way cross-shaped steel support 5; multiple two-way cross-shaped steel supports 5 are placed horizontally at intervals in the retaining structure 1, and the two-way cross-shaped steel support 5 includes 4 cross-shaped support rods, and connecting ends are set at both ends of each support rod. The connecting ends extend into the guide rail 2 so that the two-way cross-shaped steel support 5 can move up and down along the guide rail 2, and position fixing devices are set on both sides of the connecting end. The position fixing device can be clamped in the reserved holes of the guide rail 2 to realize the position fixing of the two-way cross-shaped steel support 5, and a pulley 8 is set on the top of the connecting end to reduce the friction between the connecting end of the two-way cross-shaped steel support 5 and the inner wall of the guide rail 2; the displacement sensor 4 is arranged on the outer wall of the retaining structure 1 and is connected to the displacement collector 11 through a wire 9 for measuring the lateral displacement of the retaining structure 1;

[0032] like Figure 4 、 5 As shown, the position fixing device is two limiting balls 3 connected by a spring 21. The spring 21 provides elastic support for the limiting balls 3. When the adjusted longitudinal position is reached, the two limiting balls 3 are snapped into the reserved holes on both sides of the guide rail 2 to achieve the position fixation of the bidirectional well steel support 5.

[0033] Preferably, the diameter of the limiting ball 3 is smaller than half of the inner diameter of a single support rod of the bidirectional cross steel support 5 .

[0034] like Figure 3 As shown, the support frame 7 is supported on the top of the enclosure structure 1, and the support frame 7 is used to provide a reaction force for the top support position adjuster 6; the support frame 7 is connected to the top bidirectional cross-section steel support 5 through the support position adjuster 6, and multiple bidirectional cross-section steel supports 5 are connected through the support position adjuster 6. The two ends of the support position adjuster 6 are welded to the support frame 7 or the bidirectional cross-section steel support 5, and the support frame 7 always remains fixed. By telescoping the support position adjuster 6 between the support frame 7 and the top bidirectional cross-section steel support 5, the height of all bidirectional cross-section steel supports 5 can be changed; after the top support position adjuster 6 is adjusted, the height of the bottom bidirectional cross-section steel support 5 can be adjusted by telescoping the support position adjuster 6 between two bidirectional cross-section steel supports 5. By adjusting the support position adjuster 6, the horizontal spacing arrangement of multiple bidirectional cross-section steel supports 5 and the adjustment of the height of multiple bidirectional cross-section steel supports 5 are achieved;

[0035] Preferably, the cross-sectional shape of the foundation pit excavation is generally a quadrilateral. The utility model adopts a bidirectional cross-shaped support 5 which can not only realize synchronous support in two directions and maintain the integrity of the support structure, but also reduce the workload of internal support construction and installation.

[0036] The support position regulator 6 includes an external steel tube 20, in which a drive motor 13, a coupling 14, a bearing seat 15, a force transmission screw 16, a screw nut 17, a pressure sensor 18, and a screw seat 19 are arranged, wherein the drive motor 13 is used to provide torque to the force transmission screw 16; the coupling 14 is used to connect the drive motor 13 and the force transmission screw 16; the bearing seat 15 is used to fix the force transmission screw 16 and the external steel tube 20; the force transmission screw 16 provides axial thrust to the screw seat 19 through its own rotation; the screw nut 17 is used to connect the force transmission screw 16 and the screw seat 19; the pressure sensor 18 is arranged between the screw seat 19 and the screw nut 17 for measuring the magnitude of the axial force of the support position regulator 6, and the pressure sensor 18 is connected to the axial force control panel 10 through the wire 9; the screw seat 19 changes the length of the support displacement regulator 6 through its own axial movement, thereby adjusting the position of the bidirectional well steel support 5; the external steel tube 20 fixes and protects the support position regulator 6;

[0037] When the support position adjuster 6 is working, the drive motor 13 is started, the drive motor 13 rotates and applies torque to the force transmission screw 16 through the coupling 14. Since the position of the screw nut 17 is fixed, the rotation of the force transmission screw 16 will change its length on the other side of the screw nut 17. The increase in length pushes the screw seat 19 to extend longitudinally, that is, the length of the support position adjuster 6 is extended, the bidirectional cross-shaped steel support 5 moves longitudinally, the position of the bidirectional cross-shaped steel support 5 is lowered, or the distance between multiple bidirectional cross-shaped steel supports is increased; the decrease in length pushes the screw seat 19 to retract longitudinally, that is, the length of the support position adjuster 6 is shortened, that is, the length of the support position adjuster 6 is reduced, the position of the bidirectional cross-shaped steel support 5 is raised, or the distance between multiple bidirectional cross-shaped steel supports is reduced.

[0038] Among them, the displacement collector 11 is used to collect the lateral displacement data of the retaining structure 1 measured by the displacement sensor 4; the axial force control panel 10 is used to control the axial force and length of the support displacement regulator 6; the axial force control panel 10 and the displacement collector 11 are connected to the control software 12 through the wire 9, and the control software 12 obtains the lateral displacement data of the retaining structure 1 and the axial force data of the support displacement regulator 6, and compares the measured value and the design value of the lateral displacement data. The axial force control panel 10 adjusts the axial force of the support displacement regulator 6, and the support length will be changed while changing the axial force.

[0039] Specifically, if the measured value of the lateral displacement data of the retaining structure 1 at a certain depth position is greater than the design value, the control software 12 controls the axial force control panel 10 to start the drive motor 13 to drive the screw seat 19 to produce longitudinal movement, and through the telescopic support position adjuster 6, the horizontal bidirectional cross-shaped steel support 5 is moved to the deformation depth position, and the lateral displacement data of the retaining structure 1 is measured in real time. When the measured value of the lateral displacement data is less than the design value, it means that the support position adjuster 6 has been adjusted to the optimal position, and the adjustment is stopped at this time; if the measured values ​​of the lateral displacement data of the retaining structure 1 do not exceed the design value, the position of the bidirectional cross-shaped steel support 5 is kept unchanged.

[0040] The support position regulator 6 of the present invention is installed in the middle between multiple internal bidirectional cross-shaped steel supports 5 and the bidirectional cross-shaped steel supports 5. By combining the driving motor 13, the force transmission screw 16, the screw seat 19 and the pressure sensor 18 inside the support position regulator 6, the active adjustment of the length of the support position regulator 6 is completed, thereby realizing the intelligent control of the position of the bidirectional cross-shaped steel support 5.

[0041] The bidirectional cross-shaped steel support 5 of the utility model is embedded in the reserved hole of the guide rail 2 through the limiting ball 3, and the limiting balls 3 are connected with a spring 21. When the height of the bidirectional cross-shaped steel support 5 coincides with the height of the reserved hole of the guide rail 2, the limiting ball 3 pops out and extends into the reserved hole to fix the position of the bidirectional cross-shaped steel support 5. The diameter of the limiting ball 3 is less than half of the inner diameter of a single support rod of the bidirectional cross-shaped steel support 5, ensuring that when the bidirectional cross-shaped steel support 5 moves up and down, the limiting ball 3 will be completely compressed into the inside of the support rod, so that the bidirectional cross-shaped steel support 5 can move up and down.

[0042] In the present invention, the control software is used to simultaneously read the axial force of the support position regulator 6 and the lateral deformation data of the enclosure structure 1. By comparing the measured value of the lateral displacement data with the design value, the control software controls the axial force control panel to open, and adjusts the axial force and length of the support position regulator 6 through a simple mechanical method, thereby realizing the position adjustment of the bidirectional cross steel support position.

[0043] When using a new type of steel support structure with intelligent control of support position of the utility model for foundation pit support, the specific steps are as follows:

[0044] Step 1: The displacement collector 11 continuously collects the lateral displacement data of the enclosure structure 1 measured by the displacement sensor 4, and the displacement collector 11 transmits the lateral displacement data to the control software 12 in real time;

[0045] Step 2: The control software 12 compares the measured values ​​of the lateral displacement data at each depth of the enclosure structure 1 with the designed values. Specifically, the following situations occur:

[0046] 1) When the measured value of the lateral displacement data of the enclosure structure 1 at a certain depth position is greater than the design value, the control software 12 sends an electrical signal to control the axial force control panel 10 to turn on, and the axial force control panel 10 controls the drive motor 13 to start. The drive motor 13 applies torque to the force transmission screw 16 through the coupling 14 to drive the force transmission screw 16 to rotate. However, since the position of the screw nut 17 is fixed, the rotation of the force transmission screw 16 will change its length on the other side of the screw nut 17. When the length increases, it pushes the screw seat 19 to control the longitudinal movement between the multiple bidirectional cross-shaped steel supports 5, and the distance between the multiple bidirectional cross-shaped steel supports 5 increases or the height of the bidirectional cross-shaped steel supports 5 decreases; when the length decreases, it pushes the screw seat 19 to control the longitudinal movement between the multiple bidirectional cross-shaped steel supports 5, that is, the distance between the multiple bidirectional cross-shaped steel supports 5 decreases or the height of the bidirectional cross-shaped steel supports 5 increases.

[0047] The bidirectional cross-shaped steel support 5 moves toward the position where the lateral displacement of the retaining structure 1 is greater than its design value. When the actual value of the lateral displacement data of the corresponding depth obtained by the control software 12 is less than the design value, it means that the position adjustment of the bidirectional cross-shaped steel support 5 is appropriate, and the control software 12 controls the axial force control panel 10 to control the drive motor 13 to turn off.

[0048] 2) When the measured value of the lateral displacement data of the enclosure structure 1 at a certain depth position is less than or equal to the design value, the control software 12, the control axial force control panel 10, and the drive motor 13 do not operate.

[0049] When the steel support structure of the utility model is used for foundation pit support, the lateral displacement data of the enclosure structure is monitored in real time by a displacement sensor, and the data is transmitted to the control system in real time. The control system controls the opening and closing of the position adjustment device according to the monitoring data to adjust the position of the bidirectional cross steel support. During the support process, the support structure can actively adjust the support position according to the deformation of the enclosure structure to achieve intelligent control. At the same time, the support structure also has passive adaptability and can withstand the deformation pressure of the enclosure structure to a certain extent, ensuring the safety of the foundation pit support system. Through the intelligent control system and precise position adjustment device, the refined management and efficient construction of the support structure are realized, reducing the construction risk and cost; the support structure and support method of the utility model are suitable for different types of foundation pit support projects, have strong adaptability and flexibility, and can meet the requirements of different engineering needs and geological conditions by adjusting the parameters and configuration of the support structure.

[0050] The control part of the utility model only involves data transmission, opening and closing of the control device and mechanical structure adjustment. The utility model can control the position of the bidirectional cross steel support, continuously optimize the support position of the foundation pit in the actual project, so as to find the best support plan and solve complex foundation pit excavation and support problems.

Claims

1. A new type of steel support structure with intelligent control of support position, characterized by: The invention comprises a protective structure (1), wherein the inner wall of the protective structure (1) is connected with multiple layers of bidirectional cross-shaped steel supports (5) arranged at intervals, the multiple layers of bidirectional cross-shaped steel supports (5) are connected longitudinally and moved longitudinally by a position adjustment device, and a displacement sensor (4) is provided on the outer wall of the protective structure (1), and the displacement sensor (4) and the position adjustment device are connected to a control system.

2. A new type of steel support structure with intelligent control of support position according to claim 1, characterized in that: The bidirectional cross-shaped steel support (5) comprises four cross-shaped support rods, and each support rod is provided with a connecting end at both ends, and the connecting end is slidably connected to the enclosure structure (1).

3. A new type of steel support structure with intelligent control of support position according to claim 2, characterized in that: A guide rail (2) is longitudinally arranged on the inner wall of the enclosure structure (1); the number and position of the guide rails (2) match the number and position of the support rods; a plurality of groups of reserved holes are opened on both sides of the guide rail (2); position fixing devices are arranged on both sides of the connection end, and the position fixing devices are engaged with the reserved holes of the guide rail (2).

4. A new type of steel support structure with intelligent control of support position according to claim 3, characterized in that: The position fixing device is two limiting balls (3) connected by a spring (21), and the two limiting balls (3) are correspondingly engaged with the reserved holes on both sides of the guide rail (2).

5. A new type of steel support structure with intelligent control of support position according to claim 4, characterized in that: The diameter of the limiting ball (3) is less than half the inner diameter of a single support rod of the bidirectional well-shaped steel support (5).

6. The novel steel support structure with intelligent support position control according to claim 2 is characterized in that: A pulley (8) is provided at the top of the connection end.

7. The novel steel support structure with intelligent support position control according to claim 1 is characterized in that: The position adjustment device includes a support frame (7) and a support position regulator (6). The support frame (7) is supported on the top of the enclosure structure (1). The support frame (7) and the top bidirectional cross-shaped steel support (5) and the internal multiple top bidirectional cross-shaped steel supports (5) are connected through the support position regulator (6). A pressure sensor (18) is arranged on the support position regulator (6). The pressure sensor (18) is connected to the control system for monitoring the axial force of the support position regulator (6).

8. The novel steel support structure with intelligent control of support position according to claim 7 is characterized in that: The support position regulator (6) is further provided with a drive motor (13), a length adjustment device, and a screw seat (19). The drive motor (13) is connected to the screw seat (19) via the length adjustment device. The control system adjusts the extension length of the screw seat (19) by controlling the length adjustment device through the opening and closing of the drive motor (13).

9. The novel steel support structure with intelligent support position control according to claim 8 is characterized in that: The length adjustment device includes a force transmission screw (16) and a screw nut (17). The drive motor (13) is connected to one end of the force transmission screw (16) through a coupling (14). The force transmission screw (16) is fixed in the support position adjuster (6) through a bearing seat (15). The other end of the force transmission screw (16) is connected to the screw seat (19) through the screw nut (17). The pressure sensor (18) is arranged between the screw seat (19) and the screw nut (17).

10. The novel steel support structure with intelligent support position control according to claim 1 is characterized in that: The control system comprises an axial force control panel (10), a displacement acquisition instrument (11) and control software (12); the displacement sensor (4) is connected to the displacement acquisition instrument (11) for measuring the lateral displacement of the enclosure structure (1); the position adjustment device is connected to the axial force control panel (10) via a wire (9); the axial force control panel (10) and the displacement acquisition instrument (11) are connected to the control software (12) via a wire (9); the control software (12) is used to obtain lateral displacement data of the enclosure structure (1) and provide an opening and closing signal for the axial force control panel (10).

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