Annular diaphragm wall-open caisson composite structure sinking self-adaptive deviation rectifying structure and method

Abstract

The invention relates to an annular diaphragm wall-open caisson composite structure sinking self-adaptive deviation rectifying structure and method, and the deviation rectifying structure comprises an annular diaphragm wall-open caisson composite structure, a servo support jacking deviation rectifying device, an open caisson top back pressure jack sinking device and an open caisson sinking state monitoring and early warning device. The annular underground diaphragm wall-open caisson composite structure comprises an open caisson, an annular underground diaphragm wall and sandwich soil, the sandwich soil is arranged between the open caisson and the annular underground diaphragm wall, and the servo supporting jacking deviation correcting device comprises a servo steel supporting structure, an arc-shaped jacking frame and a limiting ring. Compared with the prior art, the method has the advantages that safe and stable sinking of the ultra-deep well structure is guaranteed, and the like.

Description

Technical Field

[0001] The invention relates to the field of caisson sinking correction, and in particular to a sinking self-adaptive correction structure and method for an annular ground-connected wall-caisson composite structure. Background Art

[0002] The development of small-section and deep underground space is the development trend of future projects. At the same time, reducing the disturbance of underground space development to surrounding buildings is the top priority. During the undrained sinking construction of caissons, due to complex geological conditions and improper construction methods, there will be a greater risk of environmental deformation. In addition, due to the large slenderness of the caisson structure and the low degree of visualization of the construction environment, it is difficult to provide real-time feedback and risk warning, resulting in the caisson sinking posture being difficult to control.

[0003] The current caisson structure has large sinking disturbance and high risk of environmental deformation. In addition, the sinking posture during the caisson process is difficult to control and is prone to deviation. Summary of the invention

[0004] The purpose of the present invention is to provide a sinking adaptive deviation correction structure and method for an annular ground-connected wall-caisson composite structure in order to ensure the safe and stable sinking of an ultra-deep caisson structure.

[0005] A sinking adaptive deviation correction structure for an annular ground-connected wall-caisson composite structure, the deviation correction structure comprises an annular ground-connected wall-caisson composite structure, a servo-supported jacking deviation correction device, a caisson top back pressure jack sinking device and a caisson sinking state monitoring and early warning device, the annular ground-connected wall-caisson composite structure comprises a caisson, an annular ground-connected wall and sandwich soil, the sandwich soil is arranged between the caisson and the annular ground-connected wall, the servo-supported jacking deviation correction device comprises a servo steel support structure, an arc-shaped jacking frame, and a limit ring;

[0006] One end of the servo steel support structure is fixed to the annular ground connection wall, the arc-shaped push frame is adapted to the circumference of the caisson, and the servo steel support structure is connected to the central control console;

[0007] The sinking device for the back pressure jack at the top of the caisson includes a concrete bracket and a steel strand extending outwardly from the annular ground connection wall, a steel bracket extending outwardly from the top of the caisson, and a back pressure jack on the steel bracket;

[0008] The caisson sinking status monitoring and early warning device comprises a horizontal laser rangefinder on a limit ring, a vertical laser rangefinder on a steel bull leg and an earth pressure box on a side wall of the caisson, and the caisson sinking status monitoring and early warning device is connected to a central control console.

[0009] Furthermore, the caisson and the annular ground-connecting wall are double-layer structures, the caisson is the inner circle, and the annular ground-connecting wall is the outer circle.

[0010] Furthermore, the position of the earth pressure box and the servo steel support structure are located on the same axis.

[0011] Furthermore, the limiting ring is arranged outside the caisson, above the core soil, and the limiting ring is connected to each servo steel support structure, and the servo steel support structure and the limiting ring are located on the same horizontal plane.

[0012] Furthermore, the concrete corbels are connected to the annular ground connecting wall, and the concrete corbels are equally divided in a circle of the annular ground connecting wall.

[0013] Further, steel corbels are fixed to the top of the caisson, and the positions and numbers of the steel corbels match those of the concrete corbels.

[0014] Furthermore, the counter-pressure jack is connected via a steel strand and a concrete corbel.

[0015] Furthermore, the vertical laser rangefinder and the horizontal laser rangefinder are arranged at four symmetrical positions.

[0016] Furthermore, a connecting hole is provided on the arc-shaped push frame, and a connecting column is provided at one end of the servo steel support structure. The connecting column cooperates with the connecting hole, and the servo steel support structure is connected to the arc-shaped push frame through the connecting column.

[0017] Another aspect of the present invention provides a method for self-adapting the sinking of an annular ground-connected wall-caisson composite structure, using the above-mentioned correction structure, and the method comprises the following steps:

[0018] S1, the horizontal laser rangefinder on the limit ring, the vertical laser rangefinder on the steel corbel and the earth pressure box on the side wall of the caisson transmit data to the central control console;

[0019] S2, the central control console evaluates the sinking status of the caisson based on the data obtained in S1;

[0020] S3, the central control console adjusts the jacking length and jacking force of the servo steel support structure based on the sinking state to control the extension of the servo steel support structure;

[0021] S4, the central control console updates the sinking status of the caisson in real time and controls the jacking length and jacking force of the servo steel support structure;

[0022] S5. After the caisson is reset, immediately control the counter-pressure jack to press down;

[0023] S6. The central control console controls the servo steel support structure to retract and continue the sinking construction of the caisson.

[0024] The purpose of the present invention can be achieved by the following technical solutions:

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The annular ground-connected wall-caisson composite structure adopted by the present invention has good waterproof performance, ensures the safety of the caisson structure, and reduces the deformation of the surrounding environment. In addition, the present invention solves the problems of low visualization of the construction environment, difficulty in real-time feedback and risk warning, and difficulty in controlling the sinking posture of the caisson through the central control console to uniformly control the servo support jacking correction device, the caisson top back pressure jack sinking device, and the caisson sinking status monitoring and early warning device.

[0027] First of all, the present invention adopts an annular ground-connected wall-caisson composite structure, in which the caisson is the inner circle and the annular ground-connected wall is the outer circle, so as to reduce the backflow phenomenon when the caisson sinks. At the same time, the present invention adopts a servo steel support structure and an arc-shaped pushing frame. The servo steel support structure is connected to the annular ground-connected wall fixedly installed on the outside as a base point, and the arc-shaped pushing frame can be adjusted to push in the opposite direction of the inclination direction of the caisson. Compared with the method of adjusting from the side in the prior art, the caisson can be corrected more stably. When the present invention performs actual correction, after the caisson is reset, that is, when it is detected that the difference between the current position data of the caisson and the normal position data is less than the threshold, a back-pressure jack is immediately used to press down. The back-pressure jack is connected to the annular ground-connected wall and the caisson, and the ground-connected wall is used for leverage to more stably press down the caisson. At the same time, the back-pressure jack is pressed down immediately after resetting, which can prevent the soil layer from changing and shifting again after the correction, thereby ensuring the safe and stable sinking of the ultra-deep caisson structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 This is a diagram of a servo-supported jacking and deviation-correcting device of the present invention;

[0030] Figure 3 This is a diagram of the sinking device of the caisson top back pressure jack of the present invention;

[0031] Figure 4 It is a front view of the servo support of the present invention;

[0032] Figure 5 It is a flow chart of the unified control algorithm of the central control console of the present invention;

[0033] In the figure, 1 is annular ground connection wall; 2 is central control console; 3 is concrete corbel; 4 is steel strand; 5 is counter-pressure jack; 6 is steel corbel; 7 is caisson; 8 is vertical laser rangefinder; 9 is horizontal laser rangefinder; 10 is arc-shaped jacking frame; 11 is servo steel support structure; 12 is sandwich soil; 13 is soil pressure box; 14 is limit ring. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0035] The present invention proposes a sinking adaptive correction structure and method for an annular ground-connected wall-caisson composite structure. The correction structure is as follows: Figure 1 As shown, it includes a ground-connected wall, a caisson and a downward pressure auxiliary device thereon, a servo support adaptive correction structure installed between the ground-connected wall and the caisson, a displacement and distance monitoring device, and a central control console on the ground. The central control console receives the data sent by the displacement and distance monitoring device, evaluates the sinking state of the caisson, automatically extends the servo support, pushes and resets, and performs fine correction. After the caisson is reset, the top jack presses down the caisson in time to prevent the caisson from tilting again and uneven force. The present invention can realize intelligent adjustment of the sinking state of the caisson; greatly improve the construction accuracy and automation level of the caisson, and improve construction efficiency.

[0036] The deviation correction structure includes an annular ground-connected wall-caisson composite structure, a servo-supported jacking correction device, a caisson top counter-pressure jack sinking device, and a caisson sinking status monitoring and early warning device. The annular ground-connected wall-caisson composite structure includes a caisson 7, an annular ground-connected wall 1, and a sandwich soil 12. The sandwich soil 12 is arranged between the caisson 7 and the annular ground-connected wall 1. The servo-supported jacking correction device includes a servo steel support structure 11, an arc-shaped jacking frame 10, and a limit ring 14. The servo-supported jacking correction device is shown in FIG. Figure 2 As shown; the sinking device of the caisson top back pressure jack of the present invention is shown in FIG. Figure 3 As shown; the servo support front view of the present invention is as shown Figure 4 shown.

[0037] One end of the servo steel support structure 11 is fixed on the annular ground connecting wall 1, and the arc-shaped push frame 10 is adapted to the circumference of the caisson 7. The servo steel support structure 11 is connected to the central control console 2;

[0038] The sinking device for the back pressure jack at the top of the caisson includes a concrete bracket 3 and a steel strand 4 extending from the annular ground connecting wall 1, a steel bracket 6 extending from the top of the caisson 7 and a back pressure jack 5 on the steel bracket 6;

[0039] The caisson sinking status monitoring and early warning device comprises a horizontal laser rangefinder 9 on a limit ring 14 , a vertical laser rangefinder 8 on a steel corbel 6 , and an earth pressure box 13 on the side wall of the caisson 7 . The caisson sinking status monitoring and early warning device is connected to a central control console 2 .

[0040] The annular ground-connected wall-caisson composite structure is a double-layer structure, with an outer ring ground-connected wall and an inner ring caisson. The annular ground-connected wall effectively isolates water and reduces the difficulty of sinking the caisson, and reduces the displacement of the surrounding soil caused by the sinking of the caisson.

[0041] Based on the above structure, the present invention also proposes a method for self-adapting the sinking of an annular ground-connected wall-caisson composite structure, using the above correction structure, the method comprises the following steps:

[0042] S1, the horizontal laser rangefinder 9 on the limit ring 14, the vertical laser rangefinder 8 on the steel corbel 6 and the earth pressure box 13 on the side wall of the caisson 7 transmit data to the central control console 2;

[0043] S2, the central control console 2 evaluates the sinking state of the caisson 7 based on the data obtained in S1;

[0044] S3, the central control console 2 adjusts the jacking length and jacking force of the servo steel support structure 11 based on the sinking state, and controls the extension of the servo steel support structure 11;

[0045] S4, the central control console 2 updates the sinking status of the caisson 7 in real time, controls the jacking length and jacking force of the servo steel support structure 11, and performs refined deviation correction;

[0046] S5. After the caisson 7 is reset, the counter-pressure jack 5 is pressed down to prevent the caisson 7 from tilting again and uneven force;

[0047] S6, the central control console 2 controls the servo steel support structure 11 to retract, and the sinking construction of the caisson 7 continues. The central control console unified control algorithm flow chart is as follows Figure 5 shown.

[0048] The present invention provides an annular ground-connected wall-caisson composite structure sinking adaptive correction structure and method, including an annular ground-connected wall, a caisson, and a wall-well composite structure composed of a core soil between the two, which has the advantages of good waterproofing performance, ensuring the safety of the caisson structure, and reducing deformation of the surrounding environment. The horizontal laser rangefinder and the vertical laser rangefinder of the present invention are respectively located in the four directions of southeast, northwest, and northeast. The soil pressure box is located on the side wall of the caisson, and the position is located on the same axis as the servo support jacking correction device.

[0049] The monitoring and early warning instrument sends the caisson's sinking position, posture, force and other status data to the central control console for evaluating the caisson's sinking status. When the caisson exceeds the tilt limit, an early warning is initiated.

[0050] By analyzing the data of the sinking status of the caisson through the central control console, the jacking distance and jacking force of each servo support are adaptively adjusted to avoid damage to the caisson caused by excessive jacking force.

[0051] The circumference of the arc-shaped jacking frame is adapted to the circumference of the caisson to avoid local uneven force and damage to the caisson surface.

[0052] On the one hand, the limit ring connects the various servo support structures, and on the other hand, it is used to measure the horizontal distance to the caisson at close range to avoid excessive deflection.

[0053] The annular ground-connected wall-caisson composite structure adopted in the present invention has the advantages of good waterproofing performance, ensuring the safety of the caisson structure, reducing deformation of the surrounding environment, etc., and solves the problems of large sinking disturbance and structural safety of traditional caissons.

[0054] The present invention adopts adaptive and refined deviation correction to save construction time and construction costs. Through the central control console, the servo support jacking correction device, the caisson top back pressure jack sinking device, and the caisson sinking status monitoring and early warning device are uniformly controlled to solve the problems of low visualization of the construction environment, difficulty in real-time feedback and risk warning, and difficulty in controlling the sinking posture of the caisson.

[0055] The present invention adopts a unified control algorithm of the central control console and replaces manual operation with an artificial intelligence optimization algorithm, thereby achieving the goal of intelligent engineering management and meeting the needs of future engineering development.

[0056] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A self-adaptive correction structure for sinking of an annular ground-connected wall-caisson composite structure, characterized in that: The deviation correction structure comprises an annular ground-connected wall-caisson composite structure, a servo-supported jacking deviation correction device, a caisson top back-pressure jack sinking device and a caisson sinking state monitoring and early warning device. The annular ground-connected wall-caisson composite structure comprises a caisson (7), an annular ground-connected wall (1) and sandwich soil (12). The sandwich soil (12) is arranged between the caisson (7) and the annular ground-connected wall (1). The servo-supported jacking deviation correction device comprises a servo steel support structure (11), an arc-shaped jacking frame (10) and a limit ring (14). One end of the servo steel support structure (11) is fixed on the annular ground connection wall (1), the arc-shaped push frame (10) is adapted to the circumference of the caisson (7), and the servo steel support structure (11) is connected to the central control console (2); The sinking device with a back-pressure jack at the top of the caisson comprises a concrete bracket (3) and a steel strand (4) extending outward from the annular ground connection wall (1), a steel bracket (6) extending outward from the top of the caisson (7), and a back-pressure jack (5) on the steel bracket (6); The caisson sinking status monitoring and early warning device comprises a horizontal laser rangefinder (9) on a limit ring (14), a vertical laser rangefinder (8) on a steel bracket (6) and an earth pressure box (13) on the side wall of the caisson (7), and the caisson sinking status monitoring and early warning device is connected to a central control console (2).

2. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 1 is characterized in that: The caisson (7) and the annular ground-connected wall (1) are double-layer structures, with the caisson (7) being the inner circle and the annular ground-connected wall (1) being the outer circle.

3. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 1 is characterized in that: The position of the earth pressure box (13) and the servo steel support structure (11) are located on the same axis.

4. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 1 is characterized in that: The limiting ring (14) is arranged outside the caisson (7) and above the core soil (12); the limiting ring (14) is connected to each servo steel support structure (11); and the servo steel support structure (11) and the limiting ring (14) are located on the same horizontal plane.

5. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 1 is characterized in that: The concrete corbels (3) are connected to the annular ground connecting wall (1), and the concrete corbels (3) are equally divided in a circle of the annular ground connecting wall (1).

6. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 5 is characterized in that: The steel corbels (6) are fixed on the top of the caisson (7), and the positions and quantities of the steel corbels (6) match those of the concrete corbels (3).

7. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 6 is characterized in that: The counter-pressure jack (5) is connected to the concrete bracket (3) via a steel strand (4).

8. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 1 is characterized in that: The vertical laser rangefinder (8) and the horizontal laser rangefinder (9) are arranged at four symmetrical positions.

9. The sinking adaptive deviation correction structure of the annular ground-connected wall-caisson composite structure according to claim 1 is characterized in that: The arc-shaped push frame (10) is provided with a connection hole, and one end of the servo steel support structure (11) is provided with a connection column, the connection column cooperates with the connection hole, and the servo steel support structure (11) is connected to the arc-shaped push frame (10) via the connection column.

10. A method for self-adapting the sinking of an annular ground-connected wall-caisson composite structure, using the correction structure according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1, the horizontal laser rangefinder (9) on the limit ring (14), the vertical laser rangefinder (8) on the steel corbel (6) and the earth pressure box (13) on the side wall of the caisson (7) transmit data to the central control console (2); S2, the central control console (2) evaluates the sinking state of the caisson (7) based on the data obtained in S1; S3, the central control console (2) adjusts the jacking length and jacking force of the servo steel support structure (11) based on the sinking state, and controls the extension of the servo steel support structure (11); S4, the central control console (2) updates the sinking status of the caisson (7) in real time, and controls the jacking length and jacking force of the servo steel support structure (11); S5. After the caisson (7) is reset, the counter-pressure jack (5) is immediately controlled to press downward; S6. The central control console (2) controls the servo steel support structure (11) to retract and continue the sinking construction of the caisson (7).

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