Lassen steel sheet pile safety state monitoring and correcting device and method

Abstract

The invention discloses a Lassen steel sheet pile safety state monitoring and correcting device and method, and relates to the technical field of cross brace structure.The Lassen steel sheet pile safety state monitoring and correcting device comprises a cross brace frame, a plurality of middle supporting hydraulic cylinders, a plurality of angle brace fixing pieces and displacement sensors, and the displacement sensors are arranged in the middle supporting hydraulic cylinders and the angle brace hydraulic cylinders; the device is used for detecting telescopic displacement of the middle support hydraulic piston rod and telescopic displacement of the angle brace hydraulic piston rod. The transverse supporting frame is supported through the multiple hydraulic cylinders and the hydraulic piston rods, the telescopic distance of the hydraulic piston rods can be dynamically adjusted according to the pile foundation distance, the adaptability of the transverse supporting frame and the pile foundations is improved, and installation errors are avoided. The perpendicularity change of the pile foundation can be monitored in real time through the displacement sensor in the hydraulic cylinder, the telescopic distance of the hydraulic piston rod can be adjusted in a self-adaptive mode through the hydraulic cylinder, the automatic correction function of the posture of the transverse supporting frame is achieved, the transverse supporting frame can be kept stable under the complex geological condition, shutdown disassembly and recombination are not needed, and the project progress is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cross bracing structure technology, and in particular to a Larssen sheet pile safety status monitoring and correction device and method. Background Technology

[0002] Traditional cross-bracing structures mostly use fixed steel frame structures, which have the following drawbacks:

[0003] 1. The cross brace spacing needs to be manually measured and custom-made, which makes it difficult to adapt to the engineering requirements of dynamic changes in pile foundation spacing, and is prone to installation errors, especially when facing complex geological conditions;

[0004] 2. Lacking active adjustment function, if the foundation displacement or load change occurs during construction, the machine needs to be stopped, disassembled and reassembled, which seriously affects the progress of the project;

[0005] 3. The cross bracing structure interferes with subsequent excavation or pouring operations, requiring manual removal and repositioning after construction, which greatly increases the workload. Furthermore, the reduced number of cross bracing support points during construction creates safety hazards.

[0006] 4. It lacks status monitoring and fault early warning functions.

[0007] Therefore, how to provide a cross bracing structure that can partially or completely solve the above-mentioned defects is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0008] The purpose of this invention is to provide a safety status monitoring and correction device and method for Larssen sheet piles to solve the problems existing in the prior art.

[0009] To achieve the above objectives, the present invention provides a safety status monitoring and correction device for Larssen sheet piles, comprising:

[0010] The cross bracing frame is arranged in a rectangular shape and has short-side cross bracing and long-side cross bracing. The upper cross bracing frame and the lower cross bracing frame are arranged in parallel to form a double-layer cross bracing frame. Multiple vertical piles are vertically arranged on the outer side of the double-layer cross bracing frame.

[0011] Multiple intermediate support hydraulic cylinders are symmetrically arranged on the inner side of the long side cross brace on both sides of the cross brace frame. Each intermediate support hydraulic cylinder has an intermediate support hydraulic piston rod, and two opposite intermediate support hydraulic piston rods are connected.

[0012] Multiple corner bracing fasteners are provided at the four corners of the cross brace frame. Each corner bracing fastener is equipped with a corner bracing hydraulic cylinder corresponding to the short side cross brace and the long side cross brace. Each corner bracing hydraulic cylinder has a corner bracing hydraulic piston rod. The corner bracing hydraulic piston rod corresponding to the short side cross brace is hinged to the inner side of the short side cross brace, and the corner bracing hydraulic piston rod corresponding to the long side cross brace is hinged to the inner side of the long side cross brace.

[0013] Displacement sensors are installed in the intermediate support hydraulic cylinder and the corner brace hydraulic cylinder to detect the extension and retraction displacement of the intermediate support hydraulic piston rod and the corner brace hydraulic piston rod; the multiple intermediate support hydraulic cylinders located in the upper cross brace frame correspond one-to-one with the multiple intermediate support hydraulic cylinders located in the lower cross brace frame, and the multiple corner brace hydraulic cylinders located in the upper cross brace frame correspond one-to-one with the multiple corner brace hydraulic cylinders located in the lower cross brace frame.

[0014] Furthermore, the corner brace fastener includes:

[0015] bottom surface;

[0016] The two first side surfaces connect to the two ends of the bottom surface and extend upwards, respectively;

[0017] The two second sides connect to the top of the two first sides and extend upwards respectively;

[0018] The top surface is connected to the top ends of the two second side surfaces at both ends, and the length of the top surface is less than the length of the bottom surface; the angle brace hydraulic cylinders are respectively disposed on the two second side surfaces.

[0019] Furthermore, it also includes:

[0020] Multiple extended gusset hydraulic cylinders are respectively disposed on two first sides and correspond to the short side cross brace and the long side cross brace respectively. Each extended gusset hydraulic cylinder has an extended gusset hydraulic piston rod. The extended gusset hydraulic piston rod corresponding to the short side cross brace is hinged to the inner side of the short side cross brace, and the extended gusset hydraulic piston rod corresponding to the long side cross brace is hinged to the inner side of the long side cross brace.

[0021] Furthermore, it also includes:

[0022] Multiple corner brace bases are provided, and the corner brace hydraulic piston rod and the extended corner brace hydraulic piston rod are all hinged to the corner brace bases. The corner brace bases are respectively located on the inner side of the short side cross brace and the inner side of the long side cross brace.

[0023] Furthermore, it also includes:

[0024] Pressure sensors are installed in the intermediate support hydraulic cylinder and the corner brace hydraulic cylinder to detect the support pressure of the intermediate support hydraulic piston rod and the corner brace hydraulic piston rod. When the pressure detected by the pressure sensor is greater than the preset pressure, an alarm signal is issued.

[0025] The present invention also provides a method for monitoring and correcting the safety status of Larssen sheet piles, which, using the aforementioned Larssen sheet pile safety status monitoring and correction device, includes the following steps:

[0026] S1: When the verticality of the vertical pile changes, an angle α is generated between the vertical pile and the vertical direction. The extension and retraction displacements of the intermediate support hydraulic piston rod and the corner brace hydraulic piston rod are detected by displacement sensors. Based on the extension and retraction displacements of the intermediate support hydraulic piston rod and the corner brace hydraulic piston rod, the horizontal displacement of the long side cross brace is obtained. and the displacement of the short side cross brace in the horizontal direction

[0027] S2: Based on the horizontal displacement of the long side cross brace. and the displacement of the short side cross brace in the horizontal direction The verticality change of the horizontal brace corresponding to the long side of the vertical pile is obtained. and the change in verticality of the vertical pile corresponding to the short side horizontal brace

[0028] S3: When When one or more of them exceed the threshold, correction is achieved through the intermediate support hydraulic cylinder and the corner brace hydraulic cylinder, so that... Below the threshold.

[0029] The present invention discloses the following technical effects:

[0030] 1. The cross bracing frame is supported by multiple hydraulic cylinders and hydraulic piston rods. The extension and retraction distance of the hydraulic piston rods can be dynamically adjusted according to the pile spacing, which improves the compatibility between the cross bracing frame and the pile foundation and avoids installation errors.

[0031] 2. The displacement sensor inside the hydraulic cylinder can monitor the verticality changes of the pile foundation in real time, and can automatically correct the posture of the cross brace frame by adaptively adjusting the extension distance of the hydraulic piston rod through the hydraulic cylinder. This ensures that the cross brace frame remains stable under complex geological conditions without the need for machine shutdown, disassembly, and reassembly, thus guaranteeing the progress of the project.

[0032] 3. Compared with fixed steel structure frames, the cross bracing structure provided by this invention adopts a modular design, which can partially dismantle hydraulic cylinders and hydraulic piston rods or dismantle them in an efficient manner when facing subsequent excavation or pouring operations, reducing workload and safety hazards.

[0033] 4. The displacement sensor and pressure sensor work together to achieve monitoring and alarm functions, further improving safety. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the present invention;

[0036] Figure 2 Schematic diagram of the corner brace fastener;

[0037] Figure 3 This is a diagram showing the variation in the verticality of the vertical piles;

[0038] Figure 4 Flowchart of the safety status monitoring and correction method for Larssen sheet piles;

[0039] Among them, 1. Vertical pile; 2. Corner brace base; 3. Corner brace hydraulic piston rod; 4. Short side cross brace; 5. Corner brace hydraulic cylinder; 6. Corner brace fixing component; 601. First side; 602. Second side; 7. Middle support hydraulic cylinder; 8. Middle support hydraulic piston rod; 9. Long side cross brace; 10. Extended corner brace hydraulic cylinder; 11. Extended corner brace hydraulic piston rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] like Figures 1-4 As shown, this embodiment of the invention provides a safety status monitoring and correction device for Larssen sheet piles, comprising:

[0043] The horizontal bracing frame is arranged in a rectangular shape and has a short side horizontal bracing 4 and a long side horizontal bracing 9. The upper horizontal bracing frame and the lower horizontal bracing frame are arranged in parallel to form a double-layer horizontal bracing frame. Multiple vertical piles 1 are vertically set on the outside of the double-layer horizontal bracing frame.

[0044] Multiple intermediate support hydraulic cylinders 7 are symmetrically arranged on the inner side of the long side cross brace 9 on both sides of the cross brace frame. Each intermediate support hydraulic cylinder 7 has an intermediate support hydraulic piston rod 8, and two opposite intermediate support hydraulic piston rods 8 are connected.

[0045] Multiple corner bracing fasteners 6 are provided at the four corners of the cross brace frame. Corner bracing fasteners 6 are respectively provided with corner bracing hydraulic cylinders 5 corresponding to the short side cross brace 4 and the long side cross brace 9. Corner bracing hydraulic cylinders 5 have corner bracing hydraulic piston rods 3. The corner bracing hydraulic piston rods 3 corresponding to the short side cross brace 4 are hinged to the inner side of the short side cross brace 4, and the corner bracing hydraulic piston rods 3 corresponding to the long side cross brace 9 are hinged to the inner side of the long side cross brace 9.

[0046] Displacement sensors are installed in the intermediate support hydraulic cylinder 7 and the corner brace hydraulic cylinder 5 to detect the extension and retraction displacement of the intermediate support hydraulic piston rod 8 and the corner brace hydraulic piston rod 3. The multiple intermediate support hydraulic cylinders 7 located in the upper cross brace frame correspond one-to-one with the multiple intermediate support hydraulic cylinders 7 located in the lower cross brace frame, and the multiple corner brace hydraulic cylinders 5 located in the upper cross brace frame correspond one-to-one with the multiple corner brace hydraulic cylinders 5 located in the lower cross brace frame.

[0047] In this embodiment, the corner brace fastener 6 includes:

[0048] bottom surface;

[0049] The two first side surfaces 601 are respectively connected to the two ends of the bottom surface and extend upward;

[0050] The two second side surfaces 602 are respectively connected to the top of the two first side surfaces 601 and extend upward;

[0051] The top surface is connected to the top ends of the two second side surfaces 602 at both ends, and the length of the top surface is less than the length of the bottom surface; the angle brace hydraulic cylinders 5 are respectively set on the two second side surfaces 602.

[0052] In this embodiment, it also includes:

[0053] Multiple extended gusset hydraulic cylinders 10 (including displacement sensors) are respectively disposed on two first side surfaces 601 and correspond to the short side cross brace 4 and the long side cross brace 9 respectively. Each extended gusset hydraulic cylinder 10 has an extended gusset hydraulic piston rod 11. The extended gusset hydraulic piston rod 11 corresponding to the short side cross brace 4 is hinged to the inner side surface of the short side cross brace 4, and the extended gusset hydraulic piston rod 11 corresponding to the long side cross brace 9 is hinged to the inner side surface of the long side cross brace 9.

[0054] In this embodiment, it also includes:

[0055] Multiple corner brace bases 2, corner brace hydraulic piston rods 3, and extended corner brace hydraulic piston rods 11 are all hinged to the corner brace bases 2. The corner brace bases 2 are respectively located on the inner side of the short side cross brace 4 and the inner side of the long side cross brace 9. The hinged connection between the corner brace bases 2 and each hydraulic piston rod can prevent unexpected displacement during operation.

[0056] In this embodiment, it also includes:

[0057] Pressure sensors are installed in the intermediate support hydraulic cylinder 7 and the corner brace hydraulic cylinder 5 to detect the support pressure of the intermediate support hydraulic piston rod 8, the support pressure of the corner brace hydraulic piston rod 3, and the support pressure of the extended corner brace hydraulic piston rod 11. When the pressure detected by the pressure sensor is greater than the preset pressure, an alarm signal is issued. At this time, the double-layer cross brace frame can be reinforced to avoid safety accidents.

[0058] This invention also provides a method for monitoring and correcting the safety status of Larssen sheet piles, which utilizes a Larssen sheet pile safety status monitoring and correction device and includes the following steps:

[0059] S1: When the verticality of the vertical pile 1 changes, an angle α is generated between the vertical pile 1 and the vertical direction (for example, all the vertical piles 1 corresponding to the short side horizontal brace 4 are tilted as a whole). The extension and retraction displacements of the intermediate support hydraulic piston rod 8, the corner brace hydraulic piston rod 3, and the extended corner brace hydraulic piston rod 11 are detected by displacement sensors. Based on the extension and retraction displacements of the intermediate support hydraulic piston rod 8, the corner brace hydraulic piston rod 3, and the extended corner brace hydraulic piston rod 11, the displacement of the long side horizontal brace 9 in the horizontal direction is obtained. And the horizontal displacement of the short side cross brace 4.

[0060] S2: Based on the horizontal displacement of the long side cross brace 9. And the horizontal displacement of the short side cross brace 4. The verticality change of the horizontal brace 9 corresponding to the long side of the vertical pile 1 is obtained. And the change in verticality of the vertical pile 1 corresponding to the short side horizontal brace 4

[0061] like Figure 3 and Figure 4 As shown, taking the overall inclination of all vertical piles 1 corresponding to the short side horizontal brace 4 as an example, the distance between the upper horizontal brace frame and the lower horizontal brace frame is H, and the displacement of the extended corner brace hydraulic piston rod 11 corresponding to the upper horizontal brace frame is X2 (equivalent to...). The displacement of the extended corner brace hydraulic piston rod 11 corresponding to the lower horizontal brace frame is X1 (equivalent to...). The microcontroller processes the detected data in the background. Specifically, it uses trigonometric functions to convert X1X2 into the change in verticality of the vertical stake 1 due to its tilt. Will Compare with the threshold |δ|.

[0062] S3: When When one or more of them exceed the threshold, correction is made by the intermediate support hydraulic cylinder 7 and the corner brace hydraulic cylinder 5, so that... Below the threshold.

[0063] In step S1 above, when the verticality of the vertical pile 1 changes, the vertical pile 1 can compress the extended corner brace hydraulic piston rod 11 and the corner brace hydraulic piston rod 3 through the short side horizontal brace 4.

[0064] In the above steps, pressure sensors detect the support pressure of multiple intermediate support hydraulic piston rods 8, the support pressure of the corner brace hydraulic piston rod 3, and the support pressure of the extended corner brace hydraulic piston rod 11, which are denoted as P1, P2, P3...P n The preset pressure is Pmax.

[0065] like Figure 4 As shown, when At this time, the support force is adjusted by hydraulic cylinder for correction. During the correction process, the extended gusset hydraulic piston rod 11 can be adjusted to the maximum extension distance. After adjustment, the comparison is performed again. With threshold |δ|, when An alarm is triggered when; At that time, the support pressure P detected by the pressure sensor will be... n Compare with Pmax, when P n An alarm is triggered when Pmax is reached.

[0066] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0067] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A safety status monitoring and correction device for Larssen sheet piles, characterized in that, include: The cross bracing frame is arranged in a rectangular shape and has a short side cross bracing (4) and a long side cross bracing (9). The upper cross bracing frame and the lower cross bracing frame are arranged in parallel to form a double-layer cross bracing frame. Multiple vertical piles (1) are vertically arranged on the outside of the double-layer cross bracing frame. Multiple intermediate support hydraulic cylinders (7) are symmetrically arranged on the inner side of the long side cross brace (9) on both sides of the cross brace frame. The intermediate support hydraulic cylinder (7) has an intermediate support hydraulic piston rod (8), and two opposite intermediate support hydraulic piston rods (8) are connected together. Multiple corner bracing fasteners (6) are provided at the four corners of the cross bracing frame. Each corner bracing fastener (6) is provided with a corner bracing hydraulic cylinder (5) corresponding to the short side cross bracing (4) and the long side cross bracing (9). Each corner bracing hydraulic cylinder (5) has a corner bracing hydraulic piston rod (3). The corner bracing hydraulic piston rod (3) corresponding to the short side cross bracing (4) is hinged to the inner side of the short side cross bracing (4), and the corner bracing hydraulic piston rod (3) corresponding to the long side cross bracing (9) is hinged to the inner side of the long side cross bracing (9). Displacement sensors are installed in the intermediate support hydraulic cylinder (7) and the corner support hydraulic cylinder (5) to detect the extension and retraction displacement of the intermediate support hydraulic piston rod (8) and the extension and retraction displacement of the corner support hydraulic piston rod (3); the multiple intermediate support hydraulic cylinders (7) located in the upper cross support frame correspond one-to-one with the multiple intermediate support hydraulic cylinders (7) located in the lower cross support frame, and the multiple corner support hydraulic cylinders (5) located in the upper cross support frame correspond one-to-one with the multiple corner support hydraulic cylinders (5) located in the lower cross support frame.

2. The Larssen sheet pile safety status monitoring and correction device according to claim 1, characterized in that, The corner brace fastener (6) includes: bottom surface; Two first side surfaces (601) are respectively connected to both ends of the bottom surface and extend upward; The two second side surfaces (602) are respectively connected to the top of the two first side surfaces (601) and extend upward; The top surface is connected to the top of the two second side surfaces (602) at both ends, and the length of the top surface is less than the length of the bottom surface; the angle brace hydraulic cylinders (5) are respectively disposed on the two second side surfaces (602).

3. The Larssen sheet pile safety status monitoring and correction device according to claim 2, characterized in that, Also includes: Multiple extended gusset hydraulic cylinders (10) are respectively disposed on two first side surfaces (601) and correspond to the short side cross brace (4) and the long side cross brace (9) respectively. Each extended gusset hydraulic cylinder (10) has an extended gusset hydraulic piston rod (11). The extended gusset hydraulic piston rod (11) corresponding to the short side cross brace (4) is hinged to the inner side surface of the short side cross brace (4), and the extended gusset hydraulic piston rod (11) corresponding to the long side cross brace (9) is hinged to the inner side surface of the long side cross brace (9).

4. The Larssen sheet pile safety status monitoring and correction device according to claim 3, characterized in that, Also includes: Multiple corner bracing bases (2), the corner bracing hydraulic piston rod (3) and the extended corner bracing hydraulic piston rod (11) are all hinged to the corner bracing bases (2), and the corner bracing bases (2) are respectively located on the inner side of the short side cross brace (4) and the inner side of the long side cross brace (9).

5. The Larssen sheet pile safety status monitoring and correction device according to claim 1, characterized in that, Also includes: Pressure sensors are installed in the intermediate support hydraulic cylinder (7) and the corner support hydraulic cylinder (5) to detect the support pressure of the intermediate support hydraulic piston rod (8) and the support pressure of the corner support hydraulic piston rod (3). When the pressure detected by the pressure sensor is greater than the preset pressure, an alarm signal is issued.

6. A method for monitoring and correcting the safety status of Larssen sheet piles, characterized in that, The application of the Larssen sheet pile safety status monitoring and correction device according to any one of claims 1-5 includes the following steps: S1: When the verticality of the vertical pile (1) changes, an angle α is generated between the vertical pile (1) and the vertical direction. The extension and retraction displacement of the intermediate support hydraulic piston rod (8) and the corner brace hydraulic piston rod (3) are detected by the displacement sensor. Based on the extension and retraction displacement of the intermediate support hydraulic piston rod (8) and the corner brace hydraulic piston rod (3), the displacement δα of the long side horizontal brace (9) in the horizontal direction is obtained. L长 And the displacement δα of the short side cross brace (4) in the horizontal direction. L short; S2: Based on the horizontal displacement δα of the long side cross brace (9) L长 And the displacement δα of the short side cross brace (4) in the horizontal direction. L短 The verticality change δα of the vertical pile (1) corresponding to the long side horizontal brace (9) is obtained. H长 And the verticality change δα of the vertical pile (1) corresponding to the short side horizontal brace (4) H短 ; S3: When δα L长 δα L短 δα H长 δα L短 When one or more of them exceed the threshold, correction is made by the intermediate support hydraulic cylinder (7) and the corner brace hydraulic cylinder (5), so that δα L长 δα L短 δα H长 δα L短均 Below the threshold.

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