A lining flexible joint adaptable to the dislocation deformation of strata

Abstract

The application provides a lining flexible joint capable of adapting to stratum dislocation deformation, which comprises a first joint plate, a second joint plate, a first spring and a universal assembly. The first joint plate and the second joint plate are oppositely arranged. The first joint plate is provided with a first vertical plate and a first horizontal plate. The first vertical plate is provided with the first horizontal plate at intervals at one side of the first vertical plate, which faces the second joint plate. The side of the first vertical plate, which is away from the second joint plate, is used for connecting external steel bars. The second joint plate is provided with a second vertical plate and a second horizontal plate. The second vertical plate is provided with the second horizontal plate at intervals at one side of the second vertical plate, which faces the first joint plate. The second horizontal plate is located between the first horizontal plates. The side of the second vertical plate, which is away from the first joint plate, is used for connecting external steel bars. The universal assembly is arranged between the first horizontal plate and the second horizontal plate. The universal assembly is connected with the first horizontal plate through the first spring. The first spring is used for limiting the displacement stroke between the first horizontal plate and the universal assembly. The end of the universal assembly, which is away from the first spring, is slidably connected with the second horizontal plate.

Description

Technical Field

[0001] This invention relates to the field of tunnel engineering technology, and in particular to a flexible lining joint that can adapt to ground dislocation deformation. Background Technology

[0002] Ground dislocation deformation not only affects the stability of geological structures but also impacts people's production and lives. In tunnel construction, tunnels follow ground deformation; dislocations caused by ground vibration or creep seriously threaten the structural safety of tunnels. The reason for this is that ground dislocation causes deformation of the tunnel structure, which in turn leads to the destruction of the tunnel lining. Currently, measures to resist ground dislocation deformation and reduce its impact on the tunnel structure include: setting up inverted arches, increasing the strength of the lining concrete, and increasing the tunnel cross-sectional dimensions. These measures can resist small dislocations generated by the ground and reduce the adverse effects of ground dislocation deformation. However, when large dislocations occur, these measures are prone to failure, and the probability of tunnel lining damage increases significantly. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide a flexible joint for tunnel lining that can adapt to the deformation of strata dislocations, which can reduce the probability of tunnel lining damage.

[0004] To address the aforementioned technical problems, this invention provides a flexible lining joint adaptable to formation dislocation deformation, comprising: a first joint plate, a second joint plate, a first spring, and a universal joint assembly; the first joint plate and the second joint plate are arranged facing each other; the first joint plate has a first vertical plate and a first horizontal plate, with the first horizontal plate spaced at an angle on the side of the first vertical plate facing the second joint plate, and the side of the first vertical plate facing away from the second joint plate used for connecting external reinforcing bars; the second joint plate has a second vertical plate and a second horizontal plate, with the second horizontal plate spaced at an angle on the side of the second vertical plate facing the first joint plate, the second horizontal plate positioned between the first horizontal plates, and the side of the second vertical plate facing away from the first joint plate used for connecting external reinforcing bars; the universal joint assembly is disposed between the first horizontal plate and the second horizontal plate; the universal joint assembly is connected to the first horizontal plate via the first spring, the first spring limiting the displacement stroke between the first horizontal plate and the universal joint assembly, and the end of the universal joint assembly away from the first spring is slidably connected to the second horizontal plate.

[0005] In a preferred embodiment: the universal assembly includes a connecting plate, a base, and a universal ball; the connecting plate is connected to the first horizontal plate via the first spring, the end of the connecting plate away from the first spring is fixed to the base for mounting the universal ball, and the universal ball is slidably connected to the second horizontal plate.

[0006] In a preferred embodiment: the second connector plate further includes a baffle for limiting the sliding stroke of the universal assembly, the baffle being located on the periphery of the second horizontal plate and the baffle being angularly spaced from the second horizontal plate.

[0007] In a preferred embodiment: the first horizontal plate includes a fixing part for connecting the first spring, the fixing part being disposed on the end face of the first horizontal plate near the first spring.

[0008] In a preferred embodiment: it further includes a slider and a second spring; the second vertical plate includes a first chamber for sliding with the slider, the first chamber being located on the side of the second vertical plate near the first horizontal plate; the end of the first horizontal plate near the second vertical plate is connected to the slider via the second spring, and the slider slides within the first chamber under the influence of external forces.

[0009] In a preferred embodiment: it further includes a third spring; the first vertical plate includes a second chamber for sliding with a slider, the second chamber being located on the side of the first vertical plate near the second horizontal plate; the end of the second horizontal plate near the first vertical plate is connected to the slider via the third spring, and the slider slides within the second chamber under the influence of external forces.

[0010] In a preferred embodiment: both the second chamber and the first chamber are provided with openings, and both the second spring and the third spring pass through the openings to connect to the slider; the cross-sectional area of ​​the slider is larger than the area of ​​the opening.

[0011] In a preferred embodiment: the distance from the end of the first horizontal plate near the second vertical plate to the second vertical plate is equal to the distance from the end of the second horizontal plate near the first vertical plate to the first vertical plate; the distance from the second horizontal plate to the upper and lower first horizontal plates is equal.

[0012] In a preferred embodiment: the lining flexible joint is symmetrical about the plane where the second horizontal plate is located.

[0013] In a preferred embodiment: the joint is installed in the gap between two adjacent lining segments, with an even number of joints arranged at intervals in the gap, and the joints in each group are arranged orthogonally.

[0014] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0015] 1. This invention provides a flexible lining joint adaptable to ground dislocation deformation. The joints are arranged orthogonally in pairs within the gaps of adjacent lining segments in a tunnel. When the tunnel undergoes lateral or vertical deformation, the first and second joint plates push and compress each other. A first spring and a universal joint assembly are placed between the first and second joint plates to constrain the deformation of the tunnel segments. The first spring limits the displacement between the first joint plate and the universal joint assembly. The presence of a slider allows the second and third springs to slide along the deformation direction of the first spring without affecting its deformation. When the tunnel undergoes longitudinal deformation, a combination of the second spring and slider or the third spring and slider can constrain the deformation of the tunnel segments. The universal joint assembly allows the first and second joint plates to slide in the longitudinal deformation direction of the tunnel. Furthermore, considering that ground deformation in engineering always occurs simultaneously with multiple degrees of freedom, the above deformation modes (lateral, vertical, and longitudinal) of the joint can be effective simultaneously. This joint allows the lining segments to adapt to various ground dislocation deformations, reducing the mutual influence between tunnel lining segments and further reducing the probability of tunnel lining damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the joint structure described in preferred embodiment 1 of the present invention;

[0017] Figure 2 This is a schematic diagram of the joint structure described in preferred embodiment 1 of the present invention;

[0018] Figure 3 This is a partial structural diagram of the connector described in preferred embodiment 1 of the present invention;

[0019] Figure 4 This is a side view of the connector described in preferred embodiment 1 of the present invention;

[0020] Figure 5 for Figure 4 Sectional view of line AA in the middle;

[0021] Figure 6 This is a front view of the connector described in preferred embodiment 1 of the present invention;

[0022] Figure 7 for Figure 6 Sectional view of the middle BB line;

[0023] Figure 8 for Figure 6 A cross-sectional view of the CC line;

[0024] Figure 9 This is a schematic diagram of the installation of the joint described in the preferred embodiment 1 of the present invention in a tunnel lining segment;

[0025] Figure 10 for Figure 9 A magnified view of a section at point D. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted 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 a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0029] Example 1

[0030] refer to Figures 1-10This embodiment provides a flexible lining joint adaptable to formation dislocation deformation, comprising: a first joint plate 1, a second joint plate 2, a first spring 3, and a universal joint 4; the first joint plate 1 and the second joint plate 2 are arranged facing each other; the first joint plate 1 is provided with a first vertical plate 11 and a first horizontal plate 12, the first horizontal plate 12 is provided at intervals on the side of the first vertical plate 11 facing the second joint plate 2, and the side of the first vertical plate 11 facing away from the second joint plate 2 is used to connect external reinforcing bars; the second joint plate 2 is provided with a second vertical plate 21 and a second horizontal plate 22, the second vertical plate 21... A second horizontal plate 22 is arranged at an angle on one side facing the first joint plate 1, and the second horizontal plate 22 is positioned between the first horizontal plates 12. The side of the second vertical plate 21 facing away from the first joint plate 1 is used to connect external reinforcing bars. The universal assembly 4 is disposed between the first horizontal plate 12 and the second horizontal plate 22. The universal assembly 4 is connected to the first horizontal plate 12 through the first spring 3. The first spring 3 is used to limit the displacement stroke between the first horizontal plate 12 and the universal assembly 4. The end of the universal assembly 4 away from the first spring 3 is slidably connected to the second horizontal plate 22.

[0031] More specifically, in this embodiment, the flexible lining joint adaptable to formation dislocation deformation includes: a first joint plate 1, a second joint plate 2, a first spring 3, and a universal joint 4. The first joint plate 1 and the second joint plate 2 are arranged facing each other to form a mutually clamping configuration.

[0032] The first joint plate 1 has a first vertical plate 11 and two parallel first horizontal plates 12. The first horizontal plates 12 are respectively arranged at angular intervals on the side of the first vertical plate 11 facing the second joint plate 2. Preferably, the angle between the first vertical plate 11 and the first horizontal plate 12 is 90 degrees. The side of the first vertical plate 11 facing away from the second joint plate 2 is used to connect external reinforcing bars. When the joint needs to be installed and used in the lining segment inside the tunnel, the reinforcing bars of the lining segment can be inserted into the side of the first vertical plate 11 facing away from the second joint plate 2 to form a connection. The first horizontal plate 12 includes a fixing part 121, which is used to connect a first spring 3; the fixing part 121 is provided on the end face of the first horizontal plate 12 near the first spring 3.

[0033] The second joint plate 2 is provided with a second vertical plate 21 and a second horizontal plate 22. The second horizontal plate 22 is positioned at an angle on the side of the second vertical plate 21 facing the first joint plate 1. Specifically, the second horizontal plate 22 is located at the middle position on the side of the second vertical plate 21 facing the first joint plate 1, and the angle between the second vertical plate 21 and the second horizontal plate 22 is 90 degrees. Referring to the position of the first horizontal plate 12, the second horizontal plate 22 is located in the area between the two first horizontal plates 12. It can be understood that the second horizontal plate 22 is located between the first horizontal plates 12. Furthermore, the distance from the second horizontal plate 22 to the upper and lower first horizontal plates 12 is equal. The side of the second vertical plate 21 facing away from the first joint plate 1 is used to connect external reinforcing bars. When the joint needs to be installed and used in the lining segment inside the tunnel, the side of the second vertical plate 21 facing away from the first joint plate 1 can be used to insert the reinforcing bars of the lining segment to form a connection. The second joint plate 2 also includes a baffle 23, which is used to limit the sliding stroke of the universal assembly 4. The baffle 23 is located on the periphery of the second horizontal plate 22. The baffle 23 is set at an angle to the second horizontal plate 22. The height of the baffle 23 is higher than the diameter of the omnidirectional ball 43.

[0034] The universal joint assembly 4 is arranged between the first horizontal plate 12 and the second horizontal plate 22. The universal joint assembly 4 is connected to the first horizontal plate 12 via the first spring 3, which limits the displacement between the first horizontal plate 12 and the universal joint assembly 4. The end of the universal joint assembly 4 away from the first spring 3 is slidably connected to the second horizontal plate 22. The universal joint assembly 4 includes a connecting plate 41, a base 42, and a universal ball 43. The upper end of the first spring 3 is connected to the first horizontal plate 12, and the lower end of the first spring 3 is fixed to the connecting plate 41. Specifically, the connecting plate 41 is connected to the first horizontal plate 12 via the first spring 3, and the end of the connecting plate 41 away from the first spring 3 is fixed to the base 42. The base 42 is used to mount the universal ball 43, and the universal ball 43 is slidably connected to the second horizontal plate 22.

[0035] In this embodiment, the flexible lining joint adaptable to formation dislocation deformation further includes a slider 6, a second spring 5, and a third spring 7. The second vertical plate 21 has a first chamber 211 for sliding the slider 6, located on the side of the second vertical plate 21 near the first horizontal plate 12. The first vertical plate 11 has a second chamber 111 for sliding the slider 6, located on the side of the first vertical plate 11 near the second horizontal plate 22. The end of the first horizontal plate 12 near the second vertical plate 21 is connected to the slider 6 via the second spring 5, and the slider 6 slides within the first chamber 211 under external influence. The end of the second horizontal plate 22 near the first vertical plate 11 is connected to the slider 6 via the third spring 7, and the slider 6 slides within the second chamber 111 under external influence. Furthermore, both the second chamber 111 and the first chamber 211 are provided with openings, and the second spring 5 and the third spring 7 are connected to the slider 6 through the openings. The cross-sectional area of ​​the slider 6 is larger than the area of ​​the opening.

[0036] It is understood that when the tunnel undergoes lateral or vertical deformation, the first joint plate 1 and the second joint plate 2 are pressed against each other. The end of the first horizontal plate 12 near the second joint plate 2 is connected to the slider 6 via the second spring 5, so that the slider 6 slides in the first chamber 211 on the second vertical plate 21. The end of the second horizontal plate 22 near the first joint plate 1 is connected to the slider 6 via the third spring 7, so that the slider 6 slides in the second chamber 111 on the first vertical plate 11. Due to the presence of the slider 6, when affected by the deformation of strata dislocations in the tunnel, the first joint plate 1 or the second joint plate 2, together with the second spring 5 or the third spring 7, slides freely in the first chamber 211 or the second chamber 111 along the direction of deformation of the first spring 3, which can weaken or slow down the vibration between the first joint plate 1 and the second joint plate 2, and will not affect the deformation of the first spring 3.

[0037] Furthermore, the distance from the end of the first horizontal plate 12 near the second vertical plate 21 to the second vertical plate 21 is equal to the distance from the end of the second horizontal plate 22 near the first vertical plate 11 to the first vertical plate 11.

[0038] The joint allows the lining segments to adapt to multi-degree-of-freedom stratum dislocation deformation, reducing the mutual influence between tunnel lining segments and further reducing the probability of tunnel lining damage.

[0039] It should be noted that in this embodiment, the flexible lining joint that can adapt to the dislocation deformation of the stratum is symmetrical about the plane where the second horizontal plate 22 is located. It can be understood that, with the plane where the second horizontal plate 22 is located as the plane of symmetry, the structure, connection relationship and positional relationship of the joint distributed on the upper and lower sides of the plane of symmetry are the same.

[0040] In use, the joint is installed in the gap between two adjacent lining segments, with an even number of joints arranged in a group at intervals within the gap. Several groups of joints are arranged according to the tunnel dimensions. The joints in each group are arranged orthogonally. The reason for arranging the joints orthogonally is to ensure that when the tunnel undergoes lateral or vertical deformation, the stretching or compressing direction of the first spring 3 of at least one joint is always consistent with the direction of the lateral or vertical deformation of the tunnel.

[0041] In this embodiment, the specific implementation process of installing and using the flexible lining joint that can adapt to stratum dislocation deformation in a tunnel lining segment includes the following steps:

[0042] Step 1: Determine the installation location and required quantity of the joints on the tunnel lining segments. The number and location of the joints are adjusted according to the tunnel dimensions, while ensuring that each installation location has an even number of joints, and that the joints are placed orthogonally.

[0043] Step 2: Bind the internal steel reinforcement of the tunnel lining segments.

[0044] Step 3: Install the joints required for the corresponding number of precast tunnel lining segments.

[0045] Step 4: Weld the first vertical plate 11 of the first joint plate 1 and the second vertical plate 21 of the second joint plate 2 to the reinforcing bars inside the adjacent lining segment.

[0046] Step 5: Pour concrete for the lining segments to fully expose the first horizontal plate 12 of the first joint plate 1 and the second horizontal plate 22 of the second joint plate 2.

[0047] Step Six: After construction is completed, the tunnel enters the operation phase.

[0048] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A flexible lining joint adaptable to formation dislocation deformation, characterized in that, include: A first joint plate, a second joint plate, a first spring, and a universal joint assembly; the first joint plate and the second joint plate are arranged facing each other; the first joint plate has a first vertical plate and a first horizontal plate, and the first horizontal plate is set at an angle on the side of the first vertical plate facing the second joint plate, and the side of the first vertical plate facing away from the second joint plate is used to connect external reinforcing bars; the second joint plate has a second vertical plate and a second horizontal plate, and the second horizontal plate is set at an angle on the side of the second vertical plate facing the first joint plate, and the second horizontal plate is located between the first horizontal plates, and the side of the second vertical plate facing away from the first joint plate is used to connect external reinforcing bars; the universal joint assembly is located between the first horizontal plate and the second horizontal plate; the universal joint assembly is connected to the first horizontal plate through the first spring, the first spring is used to limit the displacement stroke between the first horizontal plate and the universal joint assembly, and the end of the universal joint assembly away from the first spring is slidably connected to the second horizontal plate; the universal joint assembly includes a connecting plate, a base, and a universal ball; the connecting plate is connected to the first horizontal plate through the first spring, and the end of the connecting plate away from the first spring is slidably connected to the second horizontal plate; the universal joint assembly includes a connecting plate, a base, and a universal ball; the connecting plate is connected to the first horizontal plate through the first spring, and the end of the connecting plate away from the first spring is slidably connected to the second horizontal plate. One end of the first spring is fixedly connected to a base for mounting the universal ball, and the universal ball is slidably connected to the second horizontal plate; the second connector plate also includes a baffle for limiting the sliding stroke of the universal assembly, the baffle being located on the periphery of the second horizontal plate and spaced at an angle from the second horizontal plate; the first horizontal plate includes a fixing part for connecting the first spring, the fixing part being disposed on the end face of the first horizontal plate near the first spring; it also includes a slider and a second spring; the second vertical plate includes a first chamber for cooperating with the slider to slide, the first chamber being located on the side of the second vertical plate near the first horizontal plate; the end of the first horizontal plate near the second vertical plate is connected to the slider via the second spring, and the slider slides within the first chamber under the influence of external forces; it also includes a third spring; the first vertical plate includes a second chamber for cooperating with the slider to slide, the second chamber being located on the side of the first vertical plate near the second horizontal plate; the end of the second horizontal plate near the first vertical plate is connected to the slider via the third spring, and the slider slides within the second chamber under the influence of external forces.

2. The flexible lining joint adaptable to formation dislocation deformation according to claim 1, characterized in that, Both the second chamber and the first chamber have openings, and both the second spring and the third spring pass through the openings to connect to the slider; the cross-sectional area of ​​the slider is larger than the area of ​​the opening.

3. The flexible lining joint adaptable to formation dislocation deformation according to claim 1, characterized in that, The distance from the end of the first horizontal plate near the second vertical plate to the second vertical plate is equal to the distance from the end of the second horizontal plate near the first vertical plate to the first vertical plate; the distance from the second horizontal plate to the two first horizontal plates above and below is equal.

4. A flexible lining joint adaptable to formation dislocation deformation according to any one of claims 1-3, characterized in that, The flexible lining joint is symmetrical about the plane where the second horizontal plate is located.

5. A flexible lining joint adaptable to formation dislocation deformation according to claim 4, characterized in that, The flexible lining joints are installed in the gaps between two adjacent lining segments, with an even number of joints arranged in a group at intervals in the gaps, and the joints in each group are arranged orthogonally.

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