Disturbance control device for shield tunneling machine to pass through existing pile foundation

Abstract

The utility model belongs to the technical field of shield construction, and discloses a disturbance control device for a shield tunneling machine to penetrate through an existing pile foundation, which comprises a grouting assembly, a monitoring assembly and a control assembly. The grouting assembly comprises a plurality of grouting pipelines which are arranged on the outer side of the pile foundation at intervals in the circumferential direction, each grouting pipeline is provided with a plurality of grouting openings at intervals in the vertical direction, and each grouting opening is provided with a control valve; the monitoring assembly comprises a plurality of first soil pressure monitors arranged on the outer wall of the grouting pipeline at intervals in the vertical direction, and each first soil pressure monitor is arranged between every two adjacent grouting openings and used for monitoring the soil pressure around the pile foundation, so that the monitoring accuracy and comprehensiveness are ensured. The control assembly is electrically connected between the control valve and the first soil pressure monitor so as to adjust opening and closing of the grouting opening according to a soil pressure monitoring value monitored by the soil pressure monitor, and then grouting is conducted on the periphery of the pile foundation, so that the soil pressure around the pile foundation is adjusted, the pile foundation is prevented from skewing and deforming, and safety and stability of a structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of shield construction, in particular to a disturbance control device for a shield machine passing through an existing pile foundation. Background Art

[0002] With the large-scale development of underground space in urban areas, shield machines often pass through existing pile foundations during construction. If the parameters of the shield machine are not set properly, it is easy to disturb the soil pressure on both sides of the pile foundation, causing the soil pressure to be too high or too low, which in turn causes the pile foundation to tilt or even deform. Therefore, it is necessary to take necessary control and protection measures for the existing pile foundations that the shield machine passes through to ensure the overall safety of the structure.

[0003] The pile foundation disturbance control device disclosed in the prior art is to set a pile foundation settlement monitor on the top of the pile foundation, and to arrange multiple expansion bodies symmetrically on both sides of the pile foundation. According to the pile top settlement value detected by the monitor, the expansion amount of the expansion body is controlled, thereby achieving settlement deformation control and compensation of the pile foundation. However, in actual applications, it is impossible to accurately determine whether the pile foundation is tilted and the direction of the pile foundation tilt based on the pile top settlement value alone; at the same time, after aging, the expansion body is prone to cracking and damage, and cannot be used normally. Utility Model Content

[0004] The utility model aims to provide a disturbance control device for a shield machine passing through an existing pile foundation, which can perform real-time monitoring and provide timely feedback, and the monitoring is accurate and has a long service life.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A disturbance control device for a shield machine passing through an existing pile foundation is provided, comprising:

[0007] A grouting assembly, comprising a plurality of grouting pipelines, wherein the plurality of grouting pipelines are arranged at intervals along the circumferential direction on the outside of the pile foundation, the grouting pipelines extend vertically, each of the grouting pipelines is provided with a plurality of grouting ports at intervals along the vertical direction, each of the grouting ports is provided with a control valve, and the control valve is used to adjust the opening and closing of the grouting port;

[0008] A monitoring assembly, comprising a plurality of first earth pressure monitors, wherein the plurality of first earth pressure monitors are arranged at intervals along a vertical direction on the outer wall of the grouting pipeline, and the first earth pressure monitor is arranged between two adjacent grouting ports;

[0009] A control component is electrically connected between the control valve and the first soil pressure monitor to adjust the opening and closing of the control valve according to the monitoring value of the first soil pressure monitor.

[0010] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, the monitoring component also includes a plurality of flow monitors, and the plurality of flow monitors are arranged one by one at the plurality of grouting ports, and each of the flow monitors is electrically connected to the control component.

[0011] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, the length of the grouting pipeline is greater than the length of the pile foundation.

[0012] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, the grouting component also includes a grouting pump, the output end of the grouting pump is connected to the input end of the grouting pipeline, and the grouting pump is electrically connected to the control component.

[0013] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, it also includes a second earth pressure monitor, which is arranged on the blade of the shield machine and is electrically connected to the control component.

[0014] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, a plurality of the second earth pressure monitors are provided, and the plurality of the second earth pressure monitors are arranged on the blade at intervals along the circumferential direction.

[0015] As an optional solution for the disturbance control device for a shield machine passing through an existing pile foundation, it also includes an alarm, which is electrically connected to the control component, and each of the second earth pressure monitors is electrically connected to the alarm.

[0016] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, the grouting pipeline is made of anti-corrosion material; and / or the outer wall of the grouting pipeline is coated with an anti-corrosion layer.

[0017] As an optional solution for the disturbance control device of the shield machine passing through the existing pile foundation, the slurry in the grouting pipeline is bentonite.

[0018] As an optional solution for a disturbance control device for a shield machine passing through an existing pile foundation, the grouting pipeline is arc-shaped.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a disturbance control device for a shield machine passing through an existing pile foundation, including a grouting component, a monitoring component and a control component. The grouting component includes a plurality of grouting pipelines, which are arranged at intervals along the circumference on the outside of the pile foundation, and the grouting pipelines extend vertically. Each grouting pipeline is provided with a plurality of grouting ports at intervals along the vertical direction, and each grouting port is provided with a control valve; the monitoring component includes a plurality of first soil pressure monitors arranged at intervals along the vertical direction on the outer wall of the grouting pipeline, and each first soil pressure monitor is arranged between two adjacent grouting ports, and is used to monitor the soil pressure around the pile foundation in all directions to ensure the accuracy and comprehensiveness of the monitoring. The control component is electrically connected between the control valve and the first soil pressure monitor to adjust the opening and closing of the grouting port according to the soil pressure monitoring value monitored by the soil pressure monitor, and then grouting is performed around the pile foundation to adjust the soil pressure around the pile foundation, prevent the pile foundation from being skewed and deformed, and ensure the safety and stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of a disturbance control device for a shield machine passing through an existing pile foundation provided by a specific implementation method of the utility model;

[0022] Figure 2 It is a schematic diagram of a blade of a shield machine and a second earth pressure monitor provided by a specific implementation mode of the utility model.

[0023] In the figure:

[0024] 100, pile foundation; 200, blade;

[0025] 1. Grouting assembly; 11. Grouting pipeline; 12. Grouting port; 13. Control valve; 14. Grouting pump;

[0026] 2. Monitoring component; 21. First earth pressure monitor;

[0027] 3. Control components;

[0028] 4. Second soil pressure monitor. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0034] like Figure 1 and Figure 2As shown, this embodiment provides a disturbance control device for a shield machine passing through an existing pile foundation 100. The device includes a grouting component 1, a monitoring component 2 and a control component 3. Among them, the grouting component 1 includes a plurality of grouting pipelines 11, and the plurality of grouting pipelines 11 are arranged at intervals along the circumference on the outside of the pile foundation 100, and the grouting pipelines 11 extend vertically, and each grouting pipeline 11 is provided with a plurality of grouting ports 12 at intervals along the vertical direction, and each grouting port 12 is provided with a control valve 13; the monitoring component 2 includes a plurality of first soil pressure monitors 21 arranged at intervals along the vertical direction on the outer wall of the grouting pipeline 11, and each first soil pressure monitor 21 is arranged between two adjacent grouting ports 12, and is used to monitor the soil pressure around the pile foundation 100 in all directions to ensure the accuracy and comprehensiveness of the monitoring. The control component 3 is electrically connected between the control valve 13 and the first earth pressure monitor 21 to adjust the opening and closing of the grouting port 12 according to the soil pressure monitoring value monitored by the earth pressure monitor, and then grouting is performed around the pile foundation 100 to adjust the soil pressure around the pile foundation 100, prevent the pile foundation 100 from being skewed or deformed, and ensure the safety and stability of the structure.

[0035] Specifically, in this embodiment, there are four grouting pipes, which are circumferentially arranged on the outside of the pile foundation 100. Each grouting pipe 11 is vertically spaced with multiple first soil pressure monitors 21 to accurately monitor the soil pressure around the pile foundation 100 in all directions, and then accurately determine the position where grouting is required to ensure the stability of the pile foundation 100.

[0036] Furthermore, the monitoring component 2 also includes a plurality of flow monitors, which are arranged one by one at the plurality of grouting ports 12, and each flow monitor is electrically connected to the control component 3. The above arrangement can monitor the amount of slurry flowing through the grouting ports 12 in real time to ensure that the grouting amount meets the required amount.

[0037] Alternatively, if Figure 1 As shown, the length of the grouting pipeline 11 is greater than the length of the pile foundation 100. The above arrangement enables the device to not only monitor the pressure of the soil layer around the pile foundation 100 and perform grouting, but also monitor the pressure of the soil layer around the bottom side of the pile foundation 100 and perform grouting, thereby achieving all-round pressure monitoring of the pile foundation 100 and further preventing the pile foundation 100 from being skewed or deformed.

[0038] Optionally, the grouting assembly 1 further comprises a grouting pump 14. Figure 1 The output end of the grouting pump 14 is connected to the input end of the grouting pipeline 11, and the grouting pump 14 is electrically connected to the control component 3. The above arrangement can control the start and stop of the grouting pump 14 through the control component 3, which is simple and convenient, can reduce manpower input, and improve work efficiency.

[0039] Alternatively, if Figure 2As shown, the device also includes a second soil pressure monitor 4, which is arranged on the blade 200 of the shield machine and is electrically connected to the control component 3 (not shown in the figure). The above arrangement can monitor the soil pressure around the shield machine in real time during the construction of the shield machine. When the monitoring value measured by the second soil pressure monitor 4 is too large, it can remind the operator to monitor the soil pressure around the pile foundation 100, which plays a role of early monitoring to prevent the failure to deal with the soil pressure changes around the pile foundation 100 in time.

[0040] Further, continue to refer to Figure 2 The second earth pressure monitor 4 is provided with a plurality of second earth pressure monitors 4, and the plurality of second earth pressure monitors 4 are arranged at intervals along the circumferential direction on the blade 200. The above arrangement is used to perform all-round monitoring of the soil layer pressure near the shield machine blade 200 to ensure the accuracy of the monitoring.

[0041] Furthermore, the device also includes an alarm. The alarm is electrically connected to the control component 3, and each second soil pressure monitor 4 is electrically connected to the alarm. The above setting can set the upper limit value of the alarm signal issued by the alarm through the control component 3. When the value monitored by any second soil pressure sensor 4 exceeds the set upper limit value, the alarm will issue an alarm signal to remind the operator. Specifically, the alarm signal can be a warning sound, as long as it can serve to warn the operator, and it is not specifically limited here.

[0042] Optionally, the grouting pipeline 11 is made of anti-corrosion material; and / or the outer wall of the grouting pipeline 11 is coated with an anti-corrosion layer to prevent the grouting pipeline 11 from being corroded and damaged due to being placed in the soil layer for a long time, thereby extending the service life of the grouting pipeline 11.

[0043] Specifically, the anti-corrosion material is a stainless steel material commonly used in the art; the anti-corrosion layer is made by coating with anti-corrosion coatings such as epoxy anti-corrosion coatings or polyurethane anti-corrosion coatings.

[0044] Optionally, the slurry in the grouting pipeline 11 is bentonite. Bentonite has the advantage of being environmentally friendly and can effectively avoid pollution to the soil environment.

[0045] Optionally, the grouting pipeline 11 is arc-shaped. The above arrangement can improve the fit between the grouting pipeline 11 and the outer wall of the pile foundation 100 , improve the monitoring accuracy of the first earth pressure monitor 21 located on the outer wall of the grouting pipeline 11 , and thus ensure the stability of the pile foundation 100 .

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A disturbance control device for a shield machine passing through an existing pile foundation, characterized in that: include: A grouting assembly (1) comprising a plurality of grouting pipelines (11), the plurality of grouting pipelines (11) being arranged at intervals along the circumference on the outside of a pile foundation (100), the grouting pipelines (11) extending vertically, each of the grouting pipelines (11) being arranged at intervals along the vertical direction, each of the grouting pipelines (11) being provided with a plurality of grouting ports (12), each of the grouting ports (12) being provided with a control valve (13), the control valve (13) being used to adjust the opening and closing of the grouting port (12); A monitoring assembly (2) comprising a plurality of first earth pressure monitors (21), wherein the plurality of first earth pressure monitors (21) are arranged at intervals along the vertical direction on the outer wall of the grouting pipeline (11), and the first earth pressure monitor (21) is arranged between two adjacent grouting ports (12); A control component (3), wherein the control component (3) is electrically connected between the control valve (13) and the first soil pressure monitor (21) to adjust the opening and closing of the control valve (13) according to the monitoring value of the first soil pressure monitor (21).

2. The disturbance control device for a shield machine passing through an existing pile foundation according to claim 1, characterized in that: The monitoring component (2) further comprises a plurality of flow monitors, wherein the plurality of flow monitors are arranged at the plurality of grouting ports (12) in a one-to-one correspondence, and each of the flow monitors is electrically connected to the control component (3).

3. The disturbance control device for a shield machine passing through an existing pile foundation according to claim 1, characterized in that: The length of the grouting pipeline (11) is greater than the length of the pile foundation (100).

4. The disturbance control device for a shield machine passing through an existing pile foundation according to claim 1, characterized in that: The grouting component (1) further comprises a grouting pump (14), the output end of the grouting pump (14) being connected to the input end of the grouting pipeline (11), and the grouting pump (14) being electrically connected to the control component (3).

5. The disturbance control device for a shield machine passing through an existing pile foundation according to claim 1, characterized in that: It also includes a second earth pressure monitor (4), which is arranged on the blade (200) of the shield machine and is electrically connected to the control component (3).

6. The disturbance control device for a shield machine passing through an existing pile foundation according to claim 5, characterized in that: A plurality of the second soil pressure monitors (4) are provided, and the plurality of the second soil pressure monitors (4) are arranged on the blade (200) at intervals along the circumferential direction.

7. The disturbance control device for a shield machine passing through an existing pile foundation according to claim 6, characterized in that: It also comprises an alarm, which is electrically connected to the control component (3), and each of the second soil pressure monitors (4) is electrically connected to the alarm.

8. The disturbance control device for a shield machine passing through an existing pile foundation according to any one of claims 1 to 7, characterized in that: The grouting pipeline (11) is made of an anti-corrosion material; and / or the outer wall of the grouting pipeline (11) is coated with an anti-corrosion layer.

9. The disturbance control device for a shield machine passing through an existing pile foundation according to any one of claims 1 to 7, characterized in that: The slurry in the grouting pipeline (11) is bentonite.

10. The disturbance control device for a shield machine passing through an existing pile foundation according to any one of claims 1 to 7, characterized in that: The grouting pipeline (11) is arc-shaped.

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