Steel sheet pile cofferdam deformation monitoring device
By setting up a round steel inclined pipe on the steel sheet pile cofferdam and performing double-sided corner welding, combining the positioning of the steel sheet, the joint section and the conical pointed bottom end, the deformation of the steel sheet pile cofferdam along the pile body is realized, and the problem of limited to the horizontal displacement at the top in the existing technology is solved, and a comprehensive and accurate evaluation of the deformation of the cofferdam is achieved.
Patent Information
- Application Number
- CN202422152606.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-03
AI Technical Summary
When monitoring the deformation of steel sheet pile cofferdams, the existing technology is limited to the horizontal displacement at the top, and it is impossible to comprehensively and accurately evaluate the deformation of the cofferdam along the pile body, resulting in the inability to timely detect deformation modes such as excessive deformation of the skirting feet.
A steel sheet pile cofferdam deformation monitoring device is designed. By installing a round steel inclined pipe on the steel sheet pile body and performing double-sided corner welding with the steel sheet pile body, it ensures that the inclined pipe is synchronized, and combining the positioning of the steel sheet, the joint section and the conical pointed bottom end, monitoring the deformation of the steel sheet cofferdam along the pile body is achieved.
Accurate monitoring of deformation of steel sheet pile cofferdam along the pile body is achieved, deformation abnormalities can be detected in a timely manner, and the safety of cofferdam deformation is comprehensively evaluated, so as to avoid safety risks caused by hidden dangers such as excessive deformation of skirting feet.
Smart Images
Figure CN222964639U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction site construction, in particular to a deformation monitoring device for a steel sheet pile cofferdam. Background Technique
[0002] In the construction process of cross-river and cross-river bridges, the cofferdam, as a temporary retaining structure, prevents water from entering the construction area of the structure and ensures the construction safety of the permanent structure. Cofferdams are divided into earth-rock cofferdams, wooden sheet pile cofferdams, reinforced concrete cofferdams, steel sheet pile cofferdams, etc., among which steel sheet pile cofferdams are widely used. As an important barrier for the construction safety of structures, it is of great significance to timely master the deformation values and deformation evolution of the cofferdam.
[0003] At present, the deformation monitoring methods for earth-rock cofferdams and reinforced concrete cofferdams are relatively clear, that is, drilling holes in the cofferdam, burying PVC inclinometers, and then monitoring the deformation of the cofferdam. However, for the deformation monitoring of steel sheet pile cofferdams, currently only the horizontal displacement at the top of the steel sheet pile cofferdam is monitored, and there is a lack of a method for monitoring the deformation of each point along the pile body of the steel sheet pile cofferdam. Only monitoring the displacement at the top of the steel sheet pile cofferdam cannot detect deformation modes such as excessive toe deformation of the steel sheet pile cofferdam, and cannot comprehensively and accurately evaluate the safety of the cofferdam deformation. Summary of the Invention
[0004] The purpose of the utility model is to solve the problem that the existing cofferdam deformation detection can only measure the top surface of the cofferdam, resulting in incomplete and inaccurate data in the background technique, and to propose a deformation monitoring device for a steel sheet pile cofferdam.
[0005] The purpose of the utility model can be realized by the following technical solutions:
[0006] A deformation monitoring device for a steel sheet pile cofferdam includes a construction area, a steel crown beam is arranged on the periphery of the construction area, and a plurality of steel sheet pile bodies are arranged on the surface of the steel crown beam. The steel sheet pile body includes:
[0007] A positioning steel sheet, which is arranged on the side of the steel sheet pile body close to the construction area, and the positioning steel sheet is arranged along the vertical direction;
[0008] A round steel inclinometer tube, which is connected to the steel sheet pile body by fillet welds, and a deformation sensor is arranged inside the round steel inclinometer tube, and the deformation sensor is communicatively connected to an external monitoring device.
[0009] As a further scheme of the utility model: connecting hook angles are arranged on both sides of each steel sheet pile body, and adjacent steel sheet pile bodies are connected by the connecting hook angles.
[0010] As a further scheme of the utility model: the top surface of the round steel inclinometer tube is located below the top surface of the steel sheet pile body, and an extension section is arranged on the top surface of the round steel inclinometer tube.
[0011] As a further solution of the utility model: the top surface of the extension section is coplanar with the top surface of the steel sheet pile body.
[0012] As a further solution of the utility model: the extension section and the steel sheet pile body are fixedly connected by welding.
[0013] As a further solution of the utility model: the bottom end of the round steel inclinometer tube is set to a conical tip.
[0014] The beneficial effects of the utility model are as follows:
[0015] (1) For a steel sheet pile cofferdam deformation monitoring device of the utility model, by arranging a round steel inclinometer tube, double-sided fillet welding is carried out between the round steel inclinometer tube and the steel sheet pile body, so that the round steel inclinometer tube can more effectively synchronize the deformation of the steel sheet pile body, and the deformation of the steel sheet pile cofferdam is accurately responded;
[0016] (2) For a steel sheet pile cofferdam deformation monitoring device of the utility model, by arranging an extension section, the top surface of the round steel inclinometer tube is located below the top surface of the steel sheet pile body, so that when the pile driver drives the steel sheet pile body, damage to the round steel inclinometer tube is avoided, and at the same time, the conical tip at the bottom surface of the round steel inclinometer tube can be more effectively inserted into the bottom of the riverbed; subsequently, the extension section is connected to the top surface of the round steel inclinometer tube so that the deformation of the steel sheet pile body can be transmitted into the round steel inclinometer tube;
[0017] (3) For a steel sheet pile cofferdam deformation monitoring device of the utility model, by arranging a positioning steel sheet, the positioning steel sheet is installed in the vertical direction before the installation of the round steel inclinometer tube, so as to position the position of the round steel inclinometer tube, and the positioning steel sheet is removed after the installation is completed. Description of the drawings
[0018] The following further describes the utility model with reference to the drawings.
[0019] Figure 1 is a structural schematic diagram of a steel sheet pile cofferdam deformation monitoring device of the utility model;
[0020] Figure 2 is the utility model Figure 1 A partial enlarged view at position A in;
[0021] Figure 3 is a structural schematic diagram of the cofferdam structure of the utility model.
[0022] In the figure: 1, construction area; 2, steel sheet pile body; 21, connecting hook angle; 22, positioning steel sheet; 23, fillet weld; 3, steel crown beam; 4, round steel inclinometer tube. Detailed implementation manners
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0024] Please refer to Figures 1-3 As shown, the present utility model is a deformation monitoring device for a steel sheet pile cofferdam, including a construction area 1, and a steel crown beam 3 is arranged outside the construction area 1. A plurality of steel sheet pile bodies 2 are arranged on the outer surface of the steel crown beam 3, and connecting hook corners 21 are arranged on both sides of the steel sheet pile body 2. Adjacent steel sheet pile bodies 2 are connected and clamped through the connecting hook corners 21. The steel sheet pile body 2 is arranged along the vertical direction outside the steel crown beam 3, and the bottom end of the steel sheet pile body 2 is inserted into the riverbed bottom for pre-installation. Subsequently, a positioning steel sheet 22 is welded on the side of the steel sheet pile body 2 close to the steel crown beam 3, and the positioning steel sheet 22 is arranged along the vertical direction. Subsequently, a round steel inclinometer tube 4 is connected to the steel sheet pile body. The round steel inclinometer tube 4 is fixed to the steel sheet pile body 2 by welding. A protruding connecting angle is arranged on the surface of the round steel inclinometer tube 4, and the round steel inclinometer tube 4 is connected to the steel sheet pile body 2 through a fillet weld 23. It is not required to penetrate the fillet weld 23 during the welding process, and it is only necessary to stick the welded parts together with the weld material. Compared with the butt weld, this welding method has lower requirements for the dimensional accuracy of the welded parts and the welding process, making the welding process more flexible and easier to control. During the welding process, the positioning steel sheet 22 positions the position of the round steel inclinometer tube 4, thereby ensuring the verticality of the round steel inclinometer tube 4 during the installation process, and then the positioning steel sheet 22 is removed. At this time, the top surface of the round steel inclinometer tube is located below the steel sheet pile body 2, ensuring that the pile driver driving the steel sheet pile does not damage the inclinometer tube. The bottom end of the round steel inclinometer tube 4 is set to a conical tip, which is convenient for the round steel inclinometer tube 4 to enter the riverbed soil body along with the steel sheet pile. After the driving of the steel sheet pile body 2 is completed, a lengthening operation is carried out on the top surface of the round steel inclinometer tube 4. The lengthening section of the round steel inclinometer tube 4 is welded to the steel sheet pile body 2, and the top surface of the lengthening section is coplanar with the top surface of the steel sheet pile body 2. A deformation sensor is arranged inside the round steel measurement structure, and the deformation sensor is communicatively connected with an external monitoring device. The round steel inclinometer tube 4 and the steel sheet pile are connected through a double-sided fillet weld 23 to ensure that the inclinometer tube deforms synergistically with the steel sheet pile, so that the deformation of the steel sheet pile cofferdam is accurately reflected.
[0025] When installing this steel sheet pile cofferdam deformation monitoring device, the bottom end of the steel sheet pile body 2 is set in the riverbed. Subsequently, positioning steel sheets 22 in the vertical direction are welded inside the steel sheet pile body 2 to position the subsequent welded round steel inclinometer tube 4. The round steel inclinometer tube 4 is welded to the steel sheet pile body 2 at a double-sided angle along the vertical direction to fix the round steel inclinometer tube 4 to the steel sheet pile body 2, and then the positioning steel plate is removed. At this time, the top surface of the round steel inclinometer tube 4 is below the top surface of the steel sheet pile body 2 to ensure that the pile driver driving the steel sheet pile does not damage the inclinometer tube. The steel sheet pile body 2 is driven into the riverbed bottom by a pile driver. At the same time, the conical tip shape of the bottom surface of the round steel inclinometer tube 4 can be inserted into the riverbed bottom more smoothly. After driving the pile, an extension section is set on the top surface of the round steel inclinometer tube 4, and the extension section is welded to the steel sheet pile body 2 to make the top surface of the extension section coplanar with the top surface of the steel sheet pile body 2 to complete the installation. When the steel sheet pile body 2 deforms itself, the round steel inclinometer tube 4 welded at a double-sided angle can deform synchronously more effectively to ensure that the deformation of the steel sheet pile cofferdam is accurately responded. External monitoring equipment can obtain the displacement curve of the entire pile body through the deformation monitoring data, comprehensively monitor the deformation amount and deformation evolution of the cofferdam, and timely detect abnormal deformation of the steel sheet pile cofferdam. Comprehensively grasp the displacement of the steel sheet pile cofferdam at various positions along the pile body, and more accurately analyze and evaluate the safety of the deformation of the steel sheet pile cofferdam.
[0026] The working principle of the present utility model: A steel sheet pile cofferdam deformation monitoring device of the present utility model is provided with a round steel inclinometer tube 4, and the round steel inclinometer tube 4 is welded to the steel sheet pile body 2 at a double-sided angle, so that the round steel inclinometer tube 4 can deform synchronously with the steel sheet pile body 2 more effectively, and the deformation of the steel sheet pile cofferdam is accurately responded; by providing an extension section, the top surface of the round steel inclinometer tube 4 is below the top surface of the steel sheet pile body 2, so that when the pile driver drives the steel sheet pile body 2, damage to the round steel inclinometer tube 4 is avoided, and at the same time, the conical tip of the bottom surface of the round steel inclinometer tube 4 can be inserted into the riverbed bottom more effectively; then an extension section is connected to the top surface of the round steel inclinometer tube 4 so that the deformation of the steel sheet pile body 2 can be transmitted into the round steel inclinometer tube 4; by providing positioning steel sheets 22, the positioning steel sheets 22 are installed in the vertical direction before the installation of the round steel inclinometer tube 4 to position the position of the round steel inclinometer tube 4, and the positioning steel sheets 22 are removed after the installation is completed.
[0027] The above has described an embodiment of the present utility model in detail, but the described content is only the preferred embodiment of the present utility model and cannot be considered as limiting the implementation scope of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model should still fall within the scope covered by the patent of the present utility model.
Claims
1. A steel sheet pile cofferdam deformation monitoring device, characterized in that: The invention comprises a construction area (1), a steel crown beam (3) is arranged at the periphery of the construction area (1), a plurality of steel sheet pile bodies (2) are arranged on the surface of the steel crown beam (3), and the steel sheet pile bodies (2) comprise: A positioning steel sheet (22) is arranged on a side of the steel sheet pile body (2) close to the construction area (1), and the positioning steel sheet (22) is arranged along the vertical direction; The round steel inclinometer tube (4) is connected to the steel sheet pile body (2) via a fillet weld (23). A deformation sensor is provided inside the round steel inclinometer tube (4), and the deformation sensor is communicatively connected to an external monitoring device.
2. A steel sheet pile cofferdam deformation monitoring device according to claim 1, characterized in that: Connecting hooks (21) are provided on both sides of each steel sheet pile body (2), and adjacent steel sheet pile bodies (2) are connected via the connecting hooks (21).
3. A steel sheet pile cofferdam deformation monitoring device according to claim 1, characterized in that: The top surface of the round steel inclinometer tube (4) is located below the top surface of the steel sheet pile body (2), and the top surface of the round steel inclinometer tube (4) is provided with an extension section.
4. A steel sheet pile cofferdam deformation monitoring device according to claim 3, characterized in that: The top surface of the extension section is coplanar with the top surface of the steel sheet pile body (2).
5. A steel sheet pile cofferdam deformation monitoring device according to claim 4, characterized in that: The extension section and the steel sheet pile body (2) are fixedly connected by welding.
6. A steel sheet pile cofferdam deformation monitoring device according to claim 1, characterized in that: The bottom end of the round steel inclinometer tube (4) is arranged to be in a conical tip shape.