Inflatable deviation correction system for extended joints used for final docking in immersed tube tunnel construction

Abstract

The present invention discloses an inflatable deviation correction system for the extension joint used for final docking during immersed tube tunnel construction. The system comprises a signal converter and a deviation correction assembly. The deviation correction assembly includes an air pump, a rangefinder, an airbag, and a fixed anchor. The rangefinder is mounted on the wall of the extension joint, and the airbag and the fixed anchor are respectively mounted on either side of the extension joint wall. The signal output of the rangefinder is connected to the signal input of the signal converter. One side of the airbag is connected to the fixed anchor via a connector, and the other side of the airbag is connected to the air pump. The signal output of the signal converter is connected to the signal input of the air pump. The present invention achieves the effect of automatically controlling the deviation correction of both sides of the prefabricated joint through the interaction of the signal converter, the air pump, the rangefinder, the airbag, the fixed anchor, the wiring harness, and the steel rope. The airbag itself has a large surface area for contact with the concrete wall, which can prevent the risk of penetrating the concrete wall, such as when adjusting with a jack.

Description

Technical Field

[0001] The present invention relates to the technical field of immersed tube tunnel construction, and in particular to an inflatable deviation-correcting system for a protruding joint used for final docking during immersed tube tunnel construction. Background Art

[0002] An immersed tube tunnel is an underwater tunnel made up of prefabricated pipes. It is an underwater waterway formed by floating several prefabricated pipe sections to the construction site on the water surface multiple times and placing them into a pre-dug foundation trench. Currently, one of the underwater connection construction methods for immersed tube tunnels is the jacking segment method. This method has the characteristics of fast docking speed, reversible process, high construction precision, and low construction cost, so it is widely used. The key step is to use a jack to push the prefabricated segment joint out from the inside of the outer sleeve and complete the docking with the pipe section. Generally, the jacking segment method uses a jack to push the prefabricated segment joint. Since there is a certain difference in the jack stroke, the joint stroke is offset. Therefore, jacks are set on both sides of the bottom of the prefabricated segment joint to achieve a lateral correction function.

[0003] This prior art solution also has the following problems when used:

[0004] The method of correcting the deviation by using a jack cannot monitor the deviation in real time and control the jack to correct the joint deviation, and the jack cannot be moved or recovered, resulting in waste. Summary of the Invention

[0005] The purpose of the present invention is to provide an inflatable deviation correction system for the extended joint used for the final docking in the construction of an immersed tube tunnel, so as to solve the problem that the method of correcting the deviation by using a jack cannot monitor the offset in real time and control the jack to correct the joint offset, and the jack cannot be moved and recovered, resulting in waste, thereby meeting market demand.

[0006] In order to achieve the above purpose, the technical solutions adopted are as follows:

[0007] An inflatable deviation correction system for a push-out joint used for final docking during immersed tube tunnel construction comprises a signal converter and a deviation correction component, wherein the deviation correction component comprises an air pump, a rangefinder, an airbag and a fixed anchor rod, the rangefinder being arranged on the wall of the push-out joint, the airbag and the fixed anchor rod being respectively arranged on both sides of the wall of the push-out joint, the signal output end of the rangefinder being connected to the signal input end of the signal converter, one side of the airbag being connected to the fixed anchor rod via a connector, the other side of the airbag being connected to the air pump, and the signal output end of the signal converter being connected to the signal input end of the air pump.

[0008] Furthermore, the connecting member is a steel rope.

[0009] Furthermore, one end of the steel rope is connected to the fixing anchor rod, and the other end thereof is connected to the air bag through a drilled hole set in the wall of the push-out joint.

[0010] Furthermore, the other side of the airbag is connected to the inflation pump through an air tube.

[0011] Furthermore, the signal output end of the rangefinder is connected to the signal input end of the signal converter via a first data line.

[0012] Furthermore, the signal output end of the signal converter is connected to the signal input end of the air pump through a second data line.

[0013] Furthermore, the correction components are provided in plurality, and the plurality of correction components are symmetrically arranged on both sides of the push-out joint with respect to the center of the push-out joint.

[0014] Furthermore, the number of the deviation-correcting components is eight, four of which form a group, and two groups of deviation-correcting components are arranged in parallel on both sides of the push-out joint.

[0015] Furthermore, the signal converter is configured as follows:

[0016] Obtaining the distance signal between the outer wall of the joint and the inner wall of the sleeve collected by each monitor;

[0017] determining whether the distances between the two sides of the joint and the inner wall of the sleeve are consistent based on the distance signal;

[0018] In the case that the distances between the two sides of the joint and the inner wall of the sleeve are inconsistent, the air pump on the side with the smaller distance is controlled to work to inflate the airbag connected to the air pump, and one or more airbags among the multiple airbags expand to reach the distance between the outer wall and the inner wall and continue to expand to push the joint toward the side with the larger distance until the distances between the two sides of the joint and the inner wall are consistent, and the air pump is controlled to stop inflation;

[0019] Each air pump is controlled to deflate the airbag connected thereto so that the airbag is completely deflated, thereby completing a deviation correction process.

[0020] Furthermore, when the joint airbag is fully extended out of the sleeve, the air pipe is cut and the borehole is filled with grouting. The fully contracted airbag and the rangefinder are recovered through the borehole using a steel rope, and finally the borehole is filled with grouting.

[0021] The beneficial effects of the present invention are:

[0022] The present invention achieves the effect of automatically controlling the deviation correction on both sides of the prefabricated joint through the mutual cooperation of a signal converter, an air pump, a rangefinder, an airbag, a fixed anchor rod, a wiring harness and a steel rope. The airbag itself has a large action surface on the concrete wall, which can prevent the risk of penetrating the concrete wall such as by jack adjustment. At the same time, the combined design of multiple airbags can change the deviation correction range, and the various components in the system can be recycled through the perforation design, which has good economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front view of an inflatable deviation-correcting system for an extended joint used for final docking in immersed tube tunnel construction according to an embodiment of the present invention is shown.

[0024] Figure 2 A left side view of an inflatable deviation-correcting system for an extended joint used for final docking in immersed tube tunnel construction according to an embodiment of the present invention is shown.

[0025] Figure 3 A top view of an inflatable deviation-correcting system for an extended joint used for final docking in immersed tube tunnel construction according to an embodiment of the present invention is shown.

[0026] Figure 4 A diagram showing the working principle of an inflatable deviation-correcting system for an extended joint used for final docking in immersed tube tunnel construction according to an embodiment of the present invention is shown.

[0027] In the figure: 1. Signal converter; 2. Air pump; 3. Rangefinder; 4. Airbag; 5. Fixed anchor rod; 6. First data line; 7. Steel rope; 8. Air pipe; 9. Second data line; 10. Perforation. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0032] The embodiment of the present invention provides an inflatable deviation correction system for the extension joint used for the final docking in the construction of an immersed tube tunnel, such as Figures 1 to 4 As shown, the inflatable deviation correction system for the extended joint used for the final docking in the immersed tube tunnel construction includes: a signal converter 1, an air pump 2, a rangefinder 3, an airbag 4 and a fixed anchor rod 5. The rangefinder 3 is connected to the signal converter 1 using a first data line 6, the monitoring joint is connected to the inner side of the outer wall, one side of the airbag 4 is connected to the through-wall fixed anchor rod 5 via a steel rope 7, and the other side is connected to the air pump 2 via an air pipe 8. The air pump 2 is connected to the signal converter 1 via a second data line 9.

[0033] It should be noted that the signal converter 1 described herein is an electronic component capable of receiving, processing, and transmitting signals. By way of example only, the signal converter 1 may include an analog-to-digital converter, a processor, and a digital-to-analog converter. The distance signal collected by the rangefinder 3 may be converted to a digital signal by the analog-to-digital converter. After the processor performs corresponding data processing, the resulting control signal is converted to an analog signal by the digital-to-analog converter and fed to the air pump 2 to control its operation.

[0034] Of course, the structure of the signal converter 1 as described above is merely an example and is not intended to limit the present invention. The signal converter 1 may also be implemented as other electronic components known in this application that can achieve functions such as signal reception, signal processing, and signal transmission, such as a single-chip microcomputer.

[0035] It should be noted that this inflatable correction system is not used for conventional underwater connection of pipe sections, but is specifically used for correcting the extension joints used for the final docking of the two sides during immersed tube tunnel construction.

[0036] In this embodiment, the airbag 4 is fixed to the outer wall of the protruding joint through a steel rope 7 and an air tube 8, and has no connection with the inner wall of the sleeve. The other end of the air tube 8 is connected to the air pump 2, and the air pump 2 inflates the airbag 4 through the air tube 8. The rangefinder 3 is fixed to the outer wall of the protruding joint and is connected to the signal converter 1 through a first data line 6. The signal converter 1 is connected to the air pump 2 through a second data line 9. The air pump 2 and the airbag 4 are controlled by the signal converter 1 to realize automatic control of the joint correction.

[0037] In this embodiment, the air pump 2, the rangefinder 3, the airbag 4 and the fixed anchor rod 5 form a deviation correction component. There are multiple deviation correction components, and the number is usually an even number, such as Figure 2 and Figure 3 As shown, there are eight correction components, four of which are arranged in a group on both sides of the ejection joint, so as to realize the distance between the side wall of the ejection joint and the wall of the sleeve through the rangefinder 3 in the correction component, and adjust the distance between the side wall of the joint and the wall of the sleeve through the airbag 4, thereby realizing correction.

[0038] Based on the above structure, during the specific implementation of the inflatable deviation correction system for the extended joint used for the final docking in the immersed tube tunnel construction, the airbag 4 and the air pump 2 do not work during the normal advancement process, and the rangefinder 3 continuously monitors the distance between the outer wall of the joint and the inner wall of the sleeve, and transmits the monitoring data to the signal converter 1 through the wiring harness 6. The signal converter 1 compares and analyzes whether the distances on both sides of the street are consistent. If they are consistent, it is considered that the joint has not been significantly offset. Otherwise, it is judged that the joint has been offset. At this time, the air pump 2 is controlled by the signal converter 1 to inflate multiple airbags in the airbag 4 on the side with the smaller spacing according to the offset. A part of the airbag 4 is inflated. When the expansion reaches the distance between the outer wall and the inner wall, the expansion continues to push the joint to the side with the larger distance, until the rangefinder 2 detects that the distance between the two ends is basically the same. At this time, it is judged that the joint stroke is not offset, and the signal converter 1 controls the air pump 2 to stop inflating on one side and deflate to make the airbag 4 completely shrink, completing a correction process to achieve the effect of real-time monitoring of the offset and real-time correction; when the joint airbag is about to completely extend out of the sleeve, the air pipe can be cut off and grouting can be used to fill the borehole, and the fully shrinked airbag 4 and the rangefinder can be recovered through the borehole 10 using the steel rope 7, and finally the borehole 10 is grouting and filled to achieve the purpose of recycling and reusing the instrument.

[0039] It should be noted that the offset described in this article refers to the difference in distance between the two sides of the push-out connector and the sleeve wall, and the side with smaller spacing refers to the side with smaller distance between the push-out connector and the sleeve wall.

[0040] The above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention. The scope of patent protection of the present invention should be defined by the claims.

Claims

1. An inflatable deviation-correcting system for the extension joint used for the final docking in immersed tunnel construction, characterized in that: It includes a signal converter and a correction component, the correction component includes an air pump, a rangefinder, an airbag and a fixed anchor rod, the rangefinder is set on the wall of the push-out joint, the airbag and the fixed anchor rod are respectively set on both sides of the push-out joint wall, the signal output end of the rangefinder is connected to the signal input end of the signal converter, one side of the airbag is connected to the fixed anchor rod through a connector, the other side of the airbag is connected to the air pump, and the signal output end of the signal converter is connected to the signal input end of the air pump; The signal output terminal of the signal converter is connected to the signal input terminal of the air pump via a second data line; the signal converter is configured as follows: Obtaining the distance signal between the outer wall of the joint and the inner wall of the sleeve collected by each distance meter; determining whether the distances between the two sides of the joint and the inner wall of the sleeve are consistent based on the distance signal; In the case that the distances between the two sides of the joint and the inner wall of the sleeve are inconsistent, the air pump on the side with the smaller distance is controlled to work to inflate the airbag connected to the air pump, and one or more airbags among the multiple airbags expand to reach the distance between the outer wall and the inner wall and continue to expand to push the joint toward the side with the larger distance until the distances between the two sides of the joint and the inner wall are consistent, and the air pump is controlled to stop inflation; Each air pump is controlled to deflate the airbag connected thereto so that the airbag is completely deflated, thereby completing a deviation correction process.

2. The inflatable deviation-correcting system for the extended joint used for the final docking in the construction of an immersed tube tunnel according to claim 1, characterized in that: The connecting piece is a steel rope.

3. The inflatable deviation-correcting system for the extended joint used for the final docking in the construction of an immersed tube tunnel according to claim 2, characterized in that: One end of the steel rope is connected to the fixing anchor rod, and the other end thereof is connected to the air bag after passing through a drilled hole set in the wall of the push-out joint.

4. The inflatable deviation-correcting system for the extended joint used for the final docking in the construction of an immersed tube tunnel according to claim 1, characterized in that: The other side of the airbag is connected to the inflation pump through an air tube.

5. The inflatable deviation-correcting system for the extended joint used for the final docking in the construction of an immersed tube tunnel according to claim 1, characterized in that: The signal output end of the rangefinder is connected to the signal input end of the signal converter via a first data line.

6. The inflatable deviation-correcting system for the extension joint used for the final docking in the construction of an immersed tube tunnel according to any one of claims 1 to 5, characterized in that: The correcting components are provided in plurality, and the correcting components are symmetrically arranged on both sides of the pushing joint with respect to the center of the pushing joint.

7. The inflatable deviation-correcting system for the extension joint used for the final docking in the construction of an immersed tube tunnel according to claim 6, characterized in that: The number of the deviation-correcting components is eight, four of which form a group, and two groups of deviation-correcting components are arranged in parallel on both sides of the push-out joint.

8. The inflatable deviation-correcting system for the extended joint used for the final docking in the construction of an immersed tube tunnel according to claim 1, characterized in that: When the joint airbag is fully extended out of the sleeve, the air tube is cut off and the borehole is filled with grouting. The fully contracted airbag and the rangefinder are recovered through the borehole using a steel rope, and finally the borehole is filled with grouting.

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