Steel support servo supporting system capable of intelligently controlling axial force and deformation of inner support

Abstract

The utility model provides a steel support servo supporting system capable of intelligently controlling inner support axial force and deformation, which comprises a building envelope, a plurality of layers of bidirectional #-shaped steel supports are fixed on the inner side of the building envelope at intervals, and steel support axial force servo devices are arranged in the bidirectional #-shaped steel supports. The steel support axial force servo device is used for adjusting the radial supporting force of the bidirectional #-shaped steel support; the plurality of displacement sensors are arranged on the outer wall of the enclosure structure and are used for measuring the lateral deformation of the enclosure structure; and the displacement sensor and the steel support axial force servo device are connected with a control system. According to the utility model, the active adjustment of the axial force of the inner support is realized, and the internal force and deformation of a support system are controlled in real time to meet the construction requirements of different construction stages.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a steel support servo support system capable of intelligently controlling the axial force and deformation of inner supports. Background Art

[0002] With the rapid development of modernization and the continuous advancement of urbanization, urban populations are growing rapidly. While this large population has brought rapid economic development, it has also posed enormous challenges to urban infrastructure construction. Therefore, the comprehensive development and utilization of underground space has gradually become a breakthrough in urban infrastructure construction. However, the excavation of underground space in crowded urban environments will inevitably affect adjacent buildings. Therefore, the safety and effectiveness of the support structure during foundation pit excavation plays a vital role in the safety of foundation pit projects.

[0003] As excavation depth increases and horizontal internal supports are installed layer by layer, the stress and deformation of the foundation pit support system constantly change. However, after construction, traditional foundation pit support systems can only passively withstand the surrounding soil pressure and are unable to actively adjust. This has significant limitations when responding to real-time changes in soil pressure. Furthermore, when the stress on the support system differs from the design value, the system cannot adjust, posing a safety hazard to the support system's service life.

[0004] As foundation pits continue to deepen and expand, their overall safety and stability face significant challenges. The safety of support structures becomes increasingly crucial during excavation. Therefore, during construction, the support structures should be adjusted in real time to prevent pit deformation and support accidents. Therefore, an internal support servo device capable of actively adjusting the axial force of foundation pit supports is urgently needed. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a steel support servo support system that intelligently controls the internal support axial force and deformation, realizes active adjustment of the internal support axial force, and controls the internal force and deformation of the support system in real time to meet the construction requirements of different construction stages.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel support servo support system for intelligently controlling the axial force and deformation of the inner support, including a retaining structure, multiple layers of bidirectional cross-shaped steel supports fixed at intervals on the inner side of the retaining structure, a steel support axial force servo device arranged inside the bidirectional cross-shaped steel support, the steel support axial force servo device being used to adjust the radial support force of the bidirectional cross-shaped steel support; a plurality of displacement sensors being arranged on the outer wall of the retaining structure for measuring the lateral deformation of the retaining structure; the displacement sensors and the steel support axial force servo device being connected to the control system.

[0007] 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.

[0008] Furthermore, the steel support axial force servo device is arranged in the connecting end of the bidirectional cross steel support.

[0009] Furthermore, a guide rail is longitudinally installed on the inner wall of the enclosure structure, and the bidirectional cross-shaped steel support connection end is fixed in the guide rail.

[0010] Furthermore, the number and position of the guide rails match the number and position of the connection ends of the bidirectional cross-shaped steel supports, and the connection ends are horizontally embedded in the guide rails.

[0011] Furthermore, the bidirectional cross-shaped steel support connection ends are fixed in the guide rails by bolts.

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

[0013] Furthermore, the steel support axial force servo device includes a drive motor, a position adjustment device, and a screw seat. The drive motor is electrically connected to the control system, the drive motor output shaft is connected to the position adjustment device, and the position adjustment device is connected to the screw seat for adjusting the position of the screw seat by driving the position adjustment device through the drive motor.

[0014] Furthermore, the position adjustment device includes a force transmission screw, which is fixed in the bidirectional cross-shaped steel support connection end through a bearing seat, the force transmission screw is connected to the output shaft of the drive motor through a coupling, and the force transmission screw is connected to the screw seat through a screw nut; a pressure sensor is arranged on the screw seat, and the pressure sensor is connected to the control system.

[0015] Furthermore, the control system includes a displacement collector, an axial force control panel and control software. The displacement sensor is connected to the displacement collector, and the displacement collector is connected to the control software; the steel support axial force servo device is connected to the axial force control panel, and the axial force control panel is connected to the control software.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] This utility model proposes a steel support servo support system that intelligently controls the axial force and deformation of internal supports. The bidirectional cross-shaped steel support design enhances the overall stability and load-bearing capacity of the support structure, and improves the structural rigidity and deformation resistance. By integrating displacement sensors, a steel support axial force servo device, and a control system, real-time monitoring and intelligent control of the support axial force and deformation within the foundation pit support system are achieved. The steel support axial force servo device can adjust the support shaft force in real time according to the control system's instructions to meet the needs of different construction stages, thereby improving the adaptability and flexibility of the support system. The displacement sensor can accurately measure the lateral deformation of the surrounding structure, providing accurate data support for the control system's decision-making.

[0018] Furthermore, the fixing method of the guide rails and bolts ensures the stability and accuracy of the bidirectional cross-shaped steel support during the support process, preventing the deviation and deformation of the support structure.

[0019] Furthermore, the steel support shaft force servo device integrates components such as a drive motor, a position adjustment device, a screw seat and a pressure sensor, has a compact structure, and is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the utility model patent;

[0021] Figure 2 This is a cross-sectional view of an embodiment of the utility model patent;

[0022] Figure 3 This is a cross-sectional view of the internal axial force servo device of the bidirectional cross steel support according to the embodiment of the utility model patent;

[0023] In the attached figure: 1. Enclosure structure; 2. Guide rail; 3. Bolt; 4. Displacement sensor; 5. Bidirectional cross-shaped steel support; 6. Axial force control panel; 7. Displacement collector; 8. Control software; 9. Wire; 10. Drive motor; 11. Coupling; 12. Bearing seat; 13. Force transmission screw; 14. Screw nut; 15. Screw seat; 16. Pressure sensor; 17. Pulley. DETAILED DESCRIPTION

[0024] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 、 2As shown, the utility model provides a steel support servo support system for intelligently controlling the axial force and deformation of the internal support, including a protective structure 1, a guide rail 2, a bolt 3, a displacement sensor 4, a bidirectional cross-shaped steel support 5, an axial force control panel 6, a displacement collector 7, a control software 8, and a wire 9; a steel support axial force servo device is provided in the bidirectional cross-shaped steel support 5, and the steel support axial force servo device includes a drive motor 10, a coupling 11, a bearing seat 12, a force transmission screw 13, a screw nut 14, a screw seat 15, a pressure sensor 16 and a pulley 17.

[0031] Among them, the retaining structure 1 is used to support the surrounding soil after the foundation pit is excavated; the guide rail 2 is longitudinally installed on the inner wall of the retaining structure 1, and the number and position of the guide rail 2 match the number and position of the connection ends of the two-way cross steel support 5; the multi-layer two-way cross steel support 5 is fixed at intervals on the inner side of the retaining structure 1, and the two-way cross steel support 5 includes four cross-shaped support rods, and each support rod has a connection end set at both ends, and the connection end is horizontally embedded in the guide rail 2; the bolt 3 passes through the bolt hole reserved on the guide rail 2 to fix the connection end of the two-way cross steel support 5 in the guide rail 2, and provides vertical support for the two-way cross steel support 5; a steel support is provided inside the connection end of the two-way cross steel support 5 A support axial force servo device, a steel support axial force servo device is used to adjust the radial support force of the bidirectional cross-shaped steel support 5; a plurality of displacement sensors 4 are arranged on the outer wall of the enclosure structure 1, and are used to measure the lateral deformation of the enclosure structure 1; the plurality of displacement sensors 4 are connected to the displacement acquisition instrument 7 through a wire 9, and the displacement acquisition instrument 7 is used to collect the lateral deformation data of the enclosure structure 1 measured by the displacement sensor 4; the displacement acquisition instrument 7 is connected to the control software 8; the plurality of steel support axial force servo devices are connected to the axial force control panel 6 through a wire 9, and are used to increase the radial support force of the bidirectional cross-shaped steel support 5 by adjusting the axial force of the steel support axial force servo device; the axial force control panel 6 is connected to the control software 8;

[0032] Preferably, the excavation cross section of the foundation pit is generally a quadrilateral, and all four excavation faces in both directions need support. The bidirectional cross-shaped support 5 can not only achieve synchronous support of the bidirectional excavation faces while ensuring the integrity of the support structure, but also reduce the workload of internal support construction and installation.

[0033] Preferably, a pulley 17 is provided at one end of the bidirectional cross-shaped steel support 5 connected to the enclosure structure 1. The use of the pulley 17 can reduce the tangential friction between the bidirectional cross-shaped steel support 5 and the enclosure structure 1, and the contact between the bidirectional cross-shaped steel support 5 and the enclosure structure 1 is more flexible. The adjustment of the support length can be more effectively fed back to the enclosure structure, thereby changing the deformation of the enclosure structure.

[0034] Preferably, Figure 3As shown, the steel support axial force servo device includes a drive motor 10, a coupling 11, a bearing seat 12, a force transmission screw 13, a screw nut 14, and a screw seat 15. The control software 8 controls the axial force control panel 6 to start, and the axial force control panel 6 starts the drive motor 10. The drive motor 10 provides torque to the force transmission screw 13 by rotating itself and combining with the coupling 11; the coupling 11 is used to connect the drive motor 10 and the force transmission screw 13; the bearing seat 12 is used to connect the fixed force transmission screw 13 to the inside of the connecting end of the bidirectional well-shaped steel support 5; the force transmission screw 13 and the screw seat 15 are connected through the screw nut 14, and the drive motor 10 drives the force transmission screw 13 to rotate, and the force transmission screw 13 provides axial thrust to the screw seat 15 through its own rotation. Under the action of this axial thrust, the screw seat 15 will move along the axial direction of the force transmission screw 13, and the lateral support force of the steel support axial force servo device on the enclosure structure 1 will be increased by adjusting the movement of the screw seat 15; a pressure sensor 16 is provided on the screw seat 15 for measuring the size of the support axial force, and the pressure sensor 16 is connected to the axial force control panel 6 through a wire. The axial force control panel 6 is used to monitor and adjust the support axial force of the steel support axial force servo device inside the connection end of the bidirectional well steel support 5;

[0035] The displacement sensor 4 obtains the lateral deformation data of the enclosure structure 1 and transmits it to the displacement collector 7. The displacement collector 7 transmits the lateral deformation data of the enclosure structure 1 to the control software 8. The control software 8 compares the measured value of the lateral deformation data of the enclosure structure 1 with the design value. If the measured value of the lateral deformation data is greater than the design value, the drive motor 10 is started through the axial force control panel 6. The drive motor 10 rotates and applies torque to the force transmission screw 13 in conjunction with the coupling 11. Since the position of the screw nut 14 is fixed, the rotation of the force transmission screw 13 will increase its length on the other side of the screw nut 14, causing the screw seat 15 to extend radially outward, thereby increasing the support length and reducing the lateral deformation of the enclosure structure 1, until the measured value of the lateral deformation data is less than or equal to the design value.

[0036] If the measured value of the lateral deformation data is less than the design value, the axial force control panel 6 and the drive motor 10 will not operate;

[0037] When using the steel support servo support system of the utility model that intelligently controls the internal support axial force and deformation to support the foundation pit, the specific steps are as follows:

[0038] Step 1: Set the size of the retaining structure 1, the size, number and layer spacing of the bidirectional cross steel supports 5 according to the size of the foundation pit, place the retaining structure 1 in the foundation pit and fix multiple layers of bidirectional cross steel supports 5 in parallel and spaced relation therein, install multiple displacement sensors 4 on the outside of the retaining structure 1, and connect the displacement sensors 4 to the displacement collector 7 via wires 9; connect the steel support axial force servo device in the bidirectional cross steel support 5 to the axial force control panel 6 via wires 9, and connect the displacement collector 7 and the axial force control panel 6 to the control software 8;

[0039] In step 2, the displacement sensor 4 obtains the lateral deformation data of the retaining structure 1 in real time and transmits it to the control software 8 through the displacement collector 7. The control software 8 compares the measured value of the lateral deformation data of the retaining structure 1 with the design value. When the measured value of the lateral deformation data is greater than the design value, the control software 8 controls the steel support axial force servo device to start adjusting and increase the radial support force of the bidirectional cross steel support 5 at the position where the displacement sensor 4 is located, until the control software 8 obtains that the measured value of the lateral deformation data of the retaining structure 1 is less than the design value, and the steel support axial force servo device is turned off.

[0040] In step three, the displacement sensor 4 obtains the lateral deformation data of the retaining structure 1 in real time and transmits it to the control software 8 through the displacement acquisition instrument 7. The control software 8 compares the measured value of the lateral deformation data of the retaining structure 1 with the design value. If the measured value of the lateral deformation data is less than or equal to the design value, the control software 8 and the steel support axial force servo device will not take any action.

[0041] The steel support servo support system proposed in the present invention is based on the real-time monitoring of the internal support axial force and the lateral deformation of the enclosure structure, thereby realizing active control of the support axial force and deformation of the foundation pit support system, thereby improving the effectiveness and safety of the foundation pit support system. Furthermore, the bidirectional cross-shaped steel support 5 is embedded and installed in the guide rail 2, and the bolt 3 is inserted into the reserved bolt hole of the guide rail 2 at the bottom of the bidirectional cross-shaped steel support 5 to provide vertical support for the bidirectional cross-shaped steel support 5, thereby achieving fixation and constraint of the bidirectional cross-shaped steel support 5. Furthermore, the steel support axial force servo device is installed inside the bidirectional cross-shaped steel support 5, which not only ensures the integrity of the support structure, but also can be combined with the drive motor 10, the force transmission screw 13, the screw seat 15 and the pressure sensor 16 to realize intelligent monitoring and adjustment of the internal support axial force. The present invention reads the internal support axial force and the enclosure structure lateral deformation data simultaneously through the control software 8, and realizes intelligent control of the internal support axial force through the axial force control panel by comparing the measured deformation value with the design value, thereby further realizing intelligent optimization of the enclosure structure deformation.

[0042] In summary, the present invention obtains the lateral deformation data of the enclosure structure 1 through the displacement sensor 4, and transmits it to the control software 8 through simple data transmission. Through simple data processing, the purpose of controlling the opening and closing of the drive motor 10 is achieved, and the simple mechanical structure consisting of the drive motor 10 force transmission screw 13, screw nut 14, and screw seat 15 is used to achieve intelligent control of the internal support axial force. The present invention combines the internal support axial force servo device with the internal support axial force and deformation optimization system to achieve monitoring and intelligent control of the support axial force and deformation of the support system, so that the proposed new support system can intelligently monitor and control the force and deformation of the entire foundation pit excavation process, and can implement complex support plans to solve difficult foundation pit support problems.

[0043] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0044] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any changes made based on the technical solution in accordance with the technical concept proposed by the present utility model shall fall within the scope of protection of the claims of the present utility model.

Claims

1. A steel support servo support system with intelligent control of internal support axial force and deformation, characterized in that: The invention comprises a retaining structure (1), a plurality of bidirectional cross-shaped steel supports (5) fixed at intervals on the inner side of the retaining structure (1), a steel support axial force servo device provided inside the bidirectional cross-shaped steel supports (5), and the steel support axial force servo device is used to adjust the radial support force of the bidirectional cross-shaped steel supports (5); a plurality of displacement sensors (4) are provided on the outer wall of the retaining structure (1) for measuring the lateral deformation of the retaining structure (1); the displacement sensors (4) and the steel support axial force servo device are connected to a control system.

2. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 1 is characterized in that: The bidirectional cross-shaped steel support (5) comprises four cross-shaped support rods, and connection ends are provided at both ends of each support rod.

3. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 2 is characterized in that: The steel support axial force servo device is arranged in the connection end of the bidirectional well-shaped steel support (5).

4. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 2 is characterized in that: A guide rail (2) is longitudinally mounted on the inner wall of the enclosure structure (1), and the connecting end of the bidirectional well-shaped steel support (5) is fixed in the guide rail (2).

5. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 4 is characterized in that: The number and position of the guide rails (2) match the number and position of the connection ends of the bidirectional well-shaped steel supports (5), and the connection ends are horizontally embedded in the guide rails (2).

6. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 4 is characterized in that: The connection ends of the bidirectional well-shaped steel supports (5) are fixed in the guide rails (2) by bolts (3).

7. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 2 is characterized in that: A pulley (17) is provided at the top of the connection end.

8. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 1 is characterized in that: The steel support axial force servo device comprises a drive motor (10), a position adjustment device, and a screw seat (15); the drive motor (10) is electrically connected to a control system; an output shaft of the drive motor (10) is connected to the position adjustment device; and the position adjustment device is connected to the screw seat (15) for adjusting the position of the screw seat (15) by driving the position adjustment device through the drive motor (10).

9. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 6 is characterized in that: The position adjustment device includes a force transmission screw (13), which is fixed to the connecting end of the bidirectional cross steel support (5) through a bearing seat (12), the force transmission screw (13) is connected to the output shaft of the drive motor (10) through a coupling (11), and the force transmission screw (13) is connected to the screw seat (15) through a screw nut (14); a pressure sensor (16) is provided on the screw seat (15), and the pressure sensor (16) is connected to the control system.

10. The steel support servo support system for intelligently controlling the internal support axial force and deformation according to claim 1 is characterized in that: The control system comprises a displacement acquisition instrument (7), an axial force control panel (6) and control software (8); the displacement sensor (4) is connected to the displacement acquisition instrument (7), and the displacement acquisition instrument (7) is connected to the control software (8); the steel support axial force servo device is connected to the axial force control panel (6), and the axial force control panel (6) is connected to the control software (8).

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