一种基于正交双悬臂梁的盾构隧道管片错缝监测装置
The orthogonal double cantilever beam monitoring device solved the problem of synchronous decoupling in the monitoring of misaligned tunnel segments, realizing high-precision long-term online monitoring in tunnel environments and improving monitoring accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN UNIV
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to simultaneously cover the vertical misalignment monitoring of adjacent tunnel segments and the horizontal misalignment monitoring of different segments within the same ring. Furthermore, sensors are susceptible to interference in the harsh environment of tunnels, resulting in unstable monitoring data and failing to meet the requirements for long-term online monitoring.
A monitoring device based on orthogonal double cantilever beams is adopted, including vertical and horizontal misalignment monitoring units. The misalignment of the tunnel segments is converted into the bending deformation of the cantilever beams by orthogonally arranged cantilever beams. The signal is output by the sensing components. Combined with the sliding structure and limit protection mechanism, the installation deviation and environmental interference are eliminated, and decoupled monitoring is achieved.
It enables simultaneous monitoring of the vertical and horizontal misalignment of the circumferential joints of shield tunnel segments, improving monitoring accuracy and stability, adapting to complex tunnel environments, and extending the service life of the device.
Smart Images
Figure CN224517731U_ABST
Abstract
Claims
1. A shield tunnel segment misalignment monitoring device based on orthogonal double cantilever beams, characterized in that, It includes a protective shell (1), a vertical misalignment monitoring unit (2), and a horizontal misalignment monitoring unit (3); The vertical misalignment monitoring unit (2) spans the two sides of the annular joint of two adjacent pipe segments and is used to monitor the vertical misalignment between the two adjacent pipe segments; the horizontal misalignment monitoring unit (3) spans the two sides of the longitudinal joint of adjacent pipe segments in the same ring and is used to monitor the horizontal misalignment between adjacent pipe segments in the same ring. The vertical misalignment monitoring unit (2) and the horizontal misalignment monitoring unit (3) are both installed inside the protective housing (1) and arranged in an orthogonal direction to achieve decoupled monitoring of vertical and horizontal misalignments.
2. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 1, characterized in that: The vertical misalignment monitoring unit (2) includes a vertical first mounting base (21), a vertical second mounting base (22), a vertical cantilever beam (23), a vertical displacement transmission component (24), and a vertical sensing component (25); The first vertical mounting base (21) is mounted on the ring segment, and the second vertical mounting base (22) is fixed on another ring segment adjacent to the first vertical mounting base (21). One end of the vertical cantilever beam (23) is fixedly connected to the first vertical mounting base (21), and the vertical displacement transmission component (24) is connected to the second vertical mounting base (22). A first connecting component (5) is connected between the vertical displacement transmission component (24) and the vertical cantilever beam (23) to convert the vertical relative displacement of the two ring segments into the bending deformation of the vertical cantilever beam (23). The vertical sensing component (25) is mounted on the vertical cantilever beam (23) and is used to collect the bending strain of the vertical cantilever beam (23) and output the vertical misalignment signal.
3. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 2, characterized in that: The horizontal misalignment monitoring unit (3) includes a first horizontal mounting base (31), a second horizontal mounting base (32), a horizontal cantilever beam (33), a horizontal displacement transmission component (34), and a horizontal sensing component (35). The first horizontal mounting base (31) is mounted on the ring segment, and the second horizontal mounting base (32) is fixed on the adjacent segment block in the same ring as the first horizontal mounting base (31); one end of the horizontal cantilever beam (33) is fixedly connected to the first horizontal mounting base (31), the horizontal displacement transmission component (34) is connected to the second horizontal mounting base (32), and a second connecting component (6) is connected between the horizontal displacement transmission component (34) and the horizontal cantilever beam (33) to convert the horizontal relative displacement of the segment block into the bending deformation of the horizontal cantilever beam (33); the horizontal sensing component (35) is mounted on the horizontal cantilever beam (33) and is used to collect the bending strain of the horizontal cantilever beam (33) and output the horizontal misalignment signal.
4. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 2, characterized in that: The first connecting component (5) includes a first connecting block (51), a first movable sleeve (52), a first locking block (53), a first compression spring (54), and a second compression spring (55); The first connecting block (51) is mounted on the vertical displacement transmitter (24); the first movable sleeve (52) is slidably mounted on the first connecting block (51); one end of the first locking block (53) is slidably mounted in the first movable sleeve (52), and the other end of the first locking block (53) is slidably mounted on the vertical cantilever beam (23) to connect the vertical displacement transmitter (24) with the vertical cantilever beam (23); The first compression spring (54) is disposed between the first connecting block (51) and the first movable sleeve (52), and the first compression spring (54) drives the first movable sleeve (52) to always tend to approach the vertical displacement transmission member (24); the second compression spring (55) is disposed between the first movable sleeve (52) and the first locking block (53), and the second compression spring (55) drives the first locking block (53) to always tend to insert into the vertical cantilever beam (23).
5. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 3, characterized in that: The second connecting assembly (6) includes a second connecting block (61), a second movable sleeve (62), a second locking block (63), a third compression spring (64), and a fourth compression spring (65); The second connecting block (61) is mounted on the horizontal displacement transmitter (34); the second movable sleeve (62) is slidably mounted on the second connecting block (61); one end of the second locking block (63) is slidably mounted in the second movable sleeve (62), and the other end of the second locking block (63) is slidably mounted on the horizontal cantilever beam (33) to connect the horizontal displacement transmitter (34) to the horizontal cantilever beam (33); The third compression spring (64) is disposed between the second connecting block (61) and the second moving sleeve (62), and the third compression spring (64) drives the second moving sleeve (62) to always tend to approach the horizontal displacement transmission member (34); the fourth compression spring (65) is disposed between the second moving sleeve (62) and the second locking block (63), and the fourth compression spring (65) drives the second locking block (63) to always tend to insert into the horizontal cantilever beam (33).
6. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 3, characterized in that: Both the vertical cantilever beam (23) and the horizontal cantilever beam (33) have fixed ends and free ends, and the free ends are provided with limiting protection mechanisms (8) for protection on both sides. The limiting protection mechanism (8) includes a limiting block (81) installed on the ring tube segment and a buffer pad (82) installed on the limiting block (81).
7. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 2, characterized in that: A sliding structure (7) is provided between the vertical displacement transmission component (24) and the vertical second mounting base (22); The sliding structure (7) includes a guide block (71) and a guide rod (72); the guide block (71) is mounted on the vertical displacement transmission member (24), the guide rod (72) is mounted on the vertical second mounting base (22), and the guide block (71) is slidably sleeved on the guide rod (72).
8. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 3, characterized in that: The vertical sensing component (25) and the horizontal sensing component (35) are any one of a resistance strain gauge, a fiber optic grating sensor, or a thin-film strain sensor; the vertical sensing component (25) and the horizontal sensing component (35) are arranged in pairs along the tension or compression region of the corresponding cantilever beam to achieve differential output and suppress temperature drift and common noise.
9. The shield tunnel segment misalignment monitoring device based on orthogonal double cantilever beams according to claim 3, characterized in that: The protective housing (1) is a sealed and waterproof housing. The protective housing (1) is provided with sealing rings (4) at the connection between it and the vertical first mounting base (21), the vertical second mounting base (22), the horizontal first mounting base (31) and the horizontal second mounting base (32). The protective housing (1) is provided with moisture-proof filler or desiccant to adapt to long-term operation in the humid and leaky environment of the tunnel.
10. The shield tunnel segment misalignment monitoring device based on the orthogonal double-cantilever beam according to claim 3, characterized in that: The vertical first mounting base (21), the vertical second mounting base (22), the horizontal first mounting base (31) and the horizontal second mounting base (32) are quick-installation structures for easy fixing. The protective housing (1) is provided with a detachable calibration block (9) for zero-point calibration and maintenance verification after installation.