Air bag negative ring segment repairing device

Abstract

The utility model discloses an air bag repairing negative ring segment device which comprises a negative ring segment and further comprises a supporting steel frame fixedly connected to the inner side of the negative ring segment, a laser range finder arranged in the center of the inner side of the negative ring segment, a plurality of air bags arranged between the negative ring segment and the supporting steel frame and displacement sensors arranged on the outer sides of the air bags. The air bag, the displacement sensor, the laser range finder and the steel frame supporting structure work cooperatively, real-time detection and dynamic repair of negative ring segment deformation are achieved, and the laser range finder wirelessly receives data of the displacement sensor and then repairs negative ring segment deformation by adjusting air pressure in the air bag. According to the annular steel frame supporting structure, the multiple air bag units are independently distributed at intervals in the circumferential direction of the annular pipe piece, compared with manual repairing, the more accurate repairing effect is achieved, worker construction is replaced in a tunnel shield, safety is improved, the H-shaped supporting steel frame can guarantee sufficient compressive load while material consumption is reduced, and the construction efficiency is improved. And the overall stability of the supporting and repairing structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel engineering technical field, especially a gasbag repair negative ring segment device. BACKGROUND

[0002] In tunnel shield construction, the negative ring segment is a key temporary support structure in the shield starting stage, and its deformation problem is directly related to the safety of tunnel construction. The negative ring segment is prone to deformation due to uneven stress, which leads to problems such as segment misalignment and joint cracking, affecting the safety of the tunnel structure. The repair of the negative ring segment is a crucial link in tunnel construction, and the repair of the segment not only ensures the safety and stability of the construction, but also ensures the economy, reliability and sustainability of the tunnel shield construction.

[0003] The traditional segment correction method lacks rigid support and the steel frame support lacks flexible adjustment capability, which easily causes secondary damage. Therefore, there is an urgent need to develop an integrated, efficient and accurate negative ring segment deformation correction device.

[0004] A shield tunnel deformation correction and deviation correction method is disclosed in Chinese patent document No. CN106014429B. The shield tunnel deformation correction and deviation correction method solves the problems of correction of "egg-shaped" deformation of the shield tunnel and deviation correction of longitudinal uneven settlement or uneven horizontal displacement of the shield tunnel. The technical solution of the present invention is as follows: the method has the following steps: 1. Segment drilling, determining the area that needs to be corrected and deviated, and drilling a small radial hole on the corresponding shield segment. Each segment is arranged with 1-4 small holes, and the hole diameter is 50-110 mm. The segment is drilled. 2. Use a high-pressure water gun to disturb the soil behind the deformed segment, and use a soil sampler to remove and water the disturbed soil. When the shield tunnel deformation correction and deviation correction reaches the expected effect, the soil behind the segment is grouted and reinforced. The present invention is suitable for correction of deformed shield tunnels and deviation correction of uneven settlement or horizontal displacement of shield tunnels. However, the shield tunnel deformation correction and deviation correction method is mainly for overall correction of the shield tunnel, and cannot be used for correction of the negative ring segment. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of insufficient rigid support, lack of flexible adjustment capability of steel frame support, and easy secondary damage, and provides a gasbag repair negative ring segment device, which realizes the technical effect of integrated, efficient and accurate correction of the negative ring segment.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] The negative ring pipe piece device for air bag repair comprises a negative ring pipe piece, a support steel frame fixedly connected to the inner side of the negative ring pipe piece, a laser range finder arranged at the center of the inner side of the negative ring pipe piece, a plurality of air bags arranged between the negative ring pipe piece and the support steel frame, and a displacement sensor arranged outside the air bags.

[0008] The air bags are arranged in the gap between the negative ring pipe piece and the support steel frame in a ring shape at equal intervals, and each air bag is independently partitioned. The air bags can support the negative ring pipe piece and improve the stability of the negative ring pipe piece. The air bags form an elastic buffer layer after being inflated, thereby avoiding surface scratches caused by the direct contact between the support steel frame and the negative ring pipe piece and protecting the integrity of the waterproof coating on the inner side of the pipe piece.

[0009] The number of displacement sensors is matched with the number of negative ring pipe pieces. The displacement sensors can monitor the radial displacement of the negative ring pipe piece in real time. The displacement sensors can monitor the radial displacement of the pipe piece caused by the earth pressure, the shield thrust or the structural damage in real time with sub-millimeter accuracy.

[0010] The laser range finder is fixedly connected to the center of the negative ring pipe piece. The laser range finder is connected to the displacement sensor through a Bluetooth device signal. The laser range finder monitors the distance from each part of the outer negative ring pipe piece inner wall to the laser range finder and receives the wireless data of the displacement sensor. The actual deformation amount of the negative ring pipe piece is analyzed based on the data.

[0011] The support steel frame is a ring-shaped H-shaped steel frame. The support steel frame is fixedly connected to the side wall of the starting well through bolts. The H-shaped support steel frame can ensure sufficient compression load while reducing the use of materials, improve the overall stability of the support repair structure, and save materials and reduce production costs.

[0012] The inner side of the support steel frame is fixedly connected to a pressure boosting mechanism. The pressure boosting mechanism comprises a gas pump, a gas storage device and a pressure regulating valve which are fixedly connected to the inner side of the support steel frame.

[0013] The gas storage device is in communication with the gas pump. The gas pump is in communication with each air bag. The pressure regulating valve is arranged between the gas pump and the air bag. The pressure boosting mechanism adjusts the air pressure of the air bag unit to realize the deformation repair of the negative ring pipe piece. The laser range finder controls the opening and closing of the pressure regulating valve and the power of the gas pump according to the deformation data of the negative ring pipe piece to adjust the air pressure of the air bag unit. Each air bag is provided with a pressure regulating valve, so that the air pressure of the air bag can be adjusted individually.

[0014] The contact surface between the outer side of the air bag and the negative ring pipe piece is provided with an anti-skid texture layer. The material of the anti-skid texture layer is base aramid fiber, and polyurethane micro-bumps are arranged on the surface of the anti-skid texture layer. When the two are matched, the surface of the air bag has excellent anti-skid performance and pressure resistance.

[0015] The corresponding relationship between the air pressure P of the air bag and the deformation variable Dd of the negative annular pipe piece is p=k*Dd+p0, wherein Dd is the deformation variable detected by the displacement sensor; k is the air pressure adjustment coefficient; and p0 is the initial reference air pressure.

[0016] Positive beneficial effects:

[0017] 1. The air bag repair negative annular pipe piece device, the air bag, the displacement sensor laser range finder and the steel frame support structure work cooperatively to realize real-time detection and dynamic repair of the negative annular pipe piece deformation, the laser range finder wirelessly receives the data of the displacement sensor and then repairs the negative annular pipe piece deformation by adjusting the air pressure in the air bag, the annular steel frame support structure has multiple air bag unit annular pipe pieces distributed independently in the circumferential direction, and compared with artificial repair, the air bag repair negative annular pipe piece device achieves more accurate repair effect and improves safety in tunnel shield construction instead of workers.

[0018] 2. The air bag repair negative annular pipe piece device, the H-shaped support steel frame can reduce the material consumption while ensuring sufficient compression load, improve the overall stability of the support repair structure and save material and reduce production costs.

[0019] 3. The air bag repair negative annular pipe piece device, a slip-resistant texture layer combined with base aramid fiber and polyurethane micro-bump is arranged on the surface of the air bag, and the surface of the air bag has excellent slip resistance and pressure resistance when the two are matched. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the utility model.

[0021] Figure 2 It is a front view structural schematic view of the utility model.

[0022] Figure 3 It is a structural schematic view of the air bag unit of the utility model.

[0023] Figure 4 It is a structural schematic view of the pressure increasing mechanism of the utility model.

[0024] In the drawing: 1-negative annular pipe piece, 2-support steel frame, 3-laser range finder, 4-air bag, 5-displacement sensor, 6-air pump, 7-gas storage device, 8-pressure regulating valve. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model and cannot be understood as a limitation of the utility model.

[0026] Embodiment 1

[0027] As shown in Figures 1 to 4 A negative annular segment device for repairing the gas bag, comprising a negative annular segment 1, characterized in that it further comprises a supporting steel frame 2 fixedly connected to the inner side of the negative annular segment 1, a laser range finder 3 arranged at the center of the inner side of the negative annular segment 1, a plurality of gas bags 4 arranged between the negative annular segment 1 and the supporting steel frame 2, and a displacement sensor 5 arranged outside the gas bag 4.

[0028] As shown in Figures 1 to 2 The gas bags 4 are arranged in a ring shape at equal intervals in the gap between the negative annular segment 1 and the supporting steel frame 2, and each gas bag 4 is independently partitioned. By arranging the gas bags 4 between the negative annular segment 1 and the supporting steel frame 2, the gas bags 4 can support the negative annular segment 1 and improve the stability of the negative annular segment 1. After being inflated, the gas bags 4 form an elastic buffer layer, which can prevent the supporting steel frame 2 from directly contacting the negative annular segment 1 and causing surface scratches, especially protecting the integrity of the waterproof coating on the inner side of the segment. Moreover, the gas bags 4 can buffer the vibration in the tunnel and reduce the influence of factors such as vibration on the negative annular segment 1, so that the negative annular segment 1 can maintain a stable state for a long time and the probability of deformation is reduced. When the negative annular segment 1 deforms, the gas pressure in the gas bags 4 can be increased to exert a force on the negative annular segment 1, thereby repairing the negative annular segment 1. When the displacement of the segment exceeds a threshold value (e.g., >10 mm), the gas bags automatically release pressure to prevent excessive repair force from causing secondary structural damage and significantly reduce the risk of fragmentation of traditional rigid top-supported segments.

[0029] Embodiment 2

[0030] As shown in Figures 1 to 3 The number of displacement sensors 5 is adapted to the number of negative annular segments 1. By arranging displacement sensors in the gas bags 4, the radial displacement of the negative annular segment 1 can be monitored in real time. The displacement sensors can monitor the radial displacement of the segment caused by soil pressure, shield thrust, or structural damage with sub-millimeter accuracy in real time. Through high-frequency sampling (e.g., 500 Hz), micro-deformation transient responses (e.g., 0.1 mm-level crack propagation) that cannot be detected by traditional manual methods can be identified, providing accurate data basis for repair.

[0031] As shown in Figures 1 to 2 The laser range finder 3 is fixedly connected to the center of the negative annular segment 1. The laser range finder 3 is connected to the displacement sensor 5 through a Bluetooth device signal. By arranging a laser range finder at the center of the negative annular segment 1, the distance from each part of the inner wall of the outer negative annular segment 1 to the laser range finder 3 can be monitored, and the wireless data of the displacement sensor can be received. Based on the data, the actual deformation amount of the negative annular segment 1 can be analyzed.

[0032] As shown in Figure 1As shown, the supporting steel frame 2 is a ring-shaped H-shaped steel frame. The supporting steel frame 2 is fixedly connected to the side wall of the starting well by bolts. By setting the supporting steel frame 2, the negative ring segment 1 is supported and limited. The H-shaped supporting steel frame 2 can ensure sufficient compressive load while reducing material consumption, improve the overall stability of the support and repair structure, and save materials and reduce production costs.

[0033] Example 3

[0034] like Figure 4 As shown, a pressurizing mechanism is fixedly connected to the inner side of the supporting steel frame 2. The pressurizing mechanism includes an air pump 6, an air storage device 7, and a pressure regulating valve 8, all of which are fixedly connected to the inner side of the supporting steel frame 2.

[0035] like Figure 4 As shown, the air storage device 7 is connected to the air pump 6, which is connected to each airbag 4. A pressure regulating valve 8 is installed between the air pump 6 and each airbag 4. The pressurization mechanism adjusts the air pressure of the airbag unit to repair the deformation of the negative ring tube segment. The laser rangefinder 3 controls the opening and closing of the pressure regulating valve 8 and the power of the air pump based on the deformation data of the negative ring tube segment 1, thereby adjusting the air pressure of the airbag unit. Each airbag 4 is equipped with a pressure regulating valve 8, allowing the air pressure of each airbag to be adjusted independently. Increasing the air pressure of some airbags 4 applies an outward force to the negative ring tube segment 1 locally, while decreasing the air pressure of some airbags 4 causes them to contract, resulting in inward contraction of the negative ring tube segment 1 locally. This achieves the adjustment and repair of the overall shape of the negative ring tube segment 1. This device automatically corrects and repairs the negative ring tube segment 1 by adjusting the air pressure of the airbags. Compared to manual repair, this method is more accurate and efficient, and workers do not need to enter high-risk areas, improving worker safety during construction.

[0036] Example 4

[0037] An anti-slip textured layer is provided on the contact surface between the outer side of the airbag 4 and the negative ring tube 1. The anti-slip textured layer is made of aramid fiber as the base material, and polyurethane micro-protrusions are provided on the surface of the anti-slip textured layer. When the two are combined, the surface of the airbag has excellent anti-slip performance and pressure resistance.

[0038] The relationship between the air pressure P of airbag 4 and the deformation Δd of the negative ring tube is p = k·Δd + p0, where Δd is the deformation detected by the displacement sensor; k is the air pressure adjustment coefficient; and p0 is the initial reference air pressure.

[0039] The working principle of this utility model is as follows:

[0040] S1. The displacement sensor monitors the radial displacement of the tunnel segments in real time with sub-millimeter accuracy caused by earth pressure, shield thrust or structural damage.

[0041] S2, the laser range finder, monitors the distance from each part of the inner wall of the outer negative ring tube sheet 1 to the laser range finder 3, and receives the wireless data of the displacement sensor, and analyzes the actual deformation of the negative ring tube sheet 1 based on the data;

[0042] S3, increase the air pressure of part of the air bag 4, thereby exerting an outward force on the negative ring tube sheet 1;

[0043] S4, reduce the air pressure of part of the air bag 4, so that the negative ring tube sheet 1 can be partially contracted inward, thereby realizing the adjustment and repair of the overall shape of the negative ring tube sheet 1.

[0044] The above is only used to explain the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model made by those skilled in the art should be covered in the scope of the claims of the utility model.

Claims

1. An air bag repair negative d-ring patch device comprising a negative d-ring patch (1), characterized in that: The support steel frame (2) is fixedly connected to the inner side of the negative ring pipe piece (1), the laser range finder (3) is arranged at the center of the inner side of the negative ring pipe piece (1), a plurality of air bags (4) are arranged between the negative ring pipe piece (1) and the support steel frame (2), and the displacement sensor (5) is arranged outside the air bag (4).

2. The annuloplasty repair negative ring segment device of claim 1, wherein: The air bags (4) are annularly and equidistantly distributed in the gap between the negative ring pipe piece (1) and the support steel frame (2), and each air bag (4) is independently partitioned.

3. The balloon-assisted repair negative annuloplasty band device of claim 1, wherein: The number of displacement sensors (5) is matched with the number of negative ring pipe pieces (1).

4. The balloon-assisted repair of an annulus pipe device according to claim 3, characterized in that: The laser range finder (3) is fixedly connected to the center of the negative ring pipe piece (1), and the laser range finder (3) is connected with the displacement sensor (5) through a Bluetooth device signal.

5. The annuloplasty repair negative ring segment device of claim 1, wherein: The support steel frame (2) is an annular H-shaped steel frame, and the support steel frame (2) is fixedly connected to the side wall of the starting well through bolts.

6. The annuloplasty repair negative ring segment device of claim 1, wherein: The inner side of the support steel frame (2) is fixedly connected with a pressure boosting mechanism, and the pressure boosting mechanism comprises an air pump (6), an air storage device (7) and a pressure regulating valve (8) which are all fixedly connected to the inner side of the support steel frame (2).

7. The balloon-assisted repair of an aneurysm device of claim 6, wherein: The air storage device (7) is communicated with the air pump (6), the air pump (6) is communicated with each air bag (4) respectively, and the pressure regulating valve (8) is arranged between the air pump (6) and the air bag (4).

8. The annuloplasty repair negative ring segment device of claim 1, wherein: The contact surface between the air bag (4) and the negative ring pipe piece (1) is provided with an anti-skid texture layer, the material of the anti-skid texture layer is a base aramid fiber, and polyurethane micro-bumps are arranged on the surface of the anti-skid texture layer.

9. The annuloplasty repair negative ring segment device of claim 1, wherein: The corresponding relationship between the air pressure P of the air bag (4) and the deformation amount Δd of the negative ring pipe piece is p=k·Δd+p0, wherein Δd is the deformation amount detected by the displacement sensor, k is an air pressure adjustment coefficient, and p0 is an initial reference air pressure.

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