Multidirectional damping structure based on tenon-and-mortise connection and shield tunnel

Abstract

The utility model provides a multidirectional damping structure based on tenon-and-mortise connection and a shield tunnel, and belongs to the technical field of shield tunnels, the multidirectional damping structure comprises an inner pipe piece and an outer pipe piece, the inner pipe piece and the outer pipe piece are both arc-shaped, a convex block is arranged on the inner wall of the outer pipe piece, a groove is formed in the outer wall of the inner pipe piece, and when the multidirectional damping structure is installed, the convex block is clamped in the groove. The protruding block is arranged in the groove, a first installation gap is formed between the first side face of the protruding block and the second side face of the groove, a second installation gap is formed between the first bottom face of the protruding block and the second bottom face of the groove, and damping assemblies are fixed in the first installation gap and the second installation gap. The tenon-and-mortise structure composed of the protruding blocks and the grooves is in a semi-fixed and semi-movable hinge state, larger bending moment can be borne, meanwhile, under the earthquake action, certain deformation is allowed to occur at the position of the tenon-and-mortise structure, and therefore the damping effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield tunnels, and in particular relates to a multi-directional shock-absorbing structure based on mortise and tenon connections and a shield tunnel. Background Art

[0002] During shield tunnel construction, it is inevitable to traverse areas with complex geological conditions, including areas prone to earthquakes. Because shield tunnels are composed of a large number of discrete tunnel segments connected by high-strength bolts, the joints between these segments are often the most severely affected during an earthquake. To mitigate earthquake damage to shield tunnels, seismic measures must be implemented based on the geological conditions. Currently, seismic measures commonly used in tunnel engineering include increasing the strength of tunnel segments and bolts. These methods are mostly rigid, enhancing the mechanical properties of tunnel segments and bolts to forcibly resist earthquakes, but do not effectively dissipate seismic energy. Utility Model Content

[0003] The utility model provides a multi-directional shock absorption structure based on mortise and tenon connection.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A multi-directional shock-absorbing structure based on mortise and tenon connection includes an inner tube segment and an outer tube segment, wherein the inner tube segment and the outer tube segment are both arc-shaped, the inner wall of the outer tube segment is provided with a protrusion, and the outer wall of the inner tube segment is provided with a groove. During installation, the protrusion is arranged in the groove, and an installation gap 1 is provided between the side 1 of the protrusion and the side 2 of the groove, and an installation gap 2 is provided between the bottom surface 1 of the protrusion and the bottom surface 2 of the groove, and shock-absorbing components are fixed in the installation gap 1 and the installation gap 2.

[0006] Furthermore, the shock absorbing assembly includes two fixing plates, a plurality of steel sheets are arranged between the two fixing plates, a rubber sheet is arranged between two adjacent steel sheets, and a rubber sheet is also arranged between the steel sheets and the fixing plates.

[0007] Furthermore, bolts are provided on the fixing plate, and the fixing plate is fixedly connected to the outer tube segment or the inner tube segment through the bolts.

[0008] Furthermore, in the axial direction of the shield tunnel, the distance between two adjacent shock-absorbing components is 90-150 cm.

[0009] Furthermore, a filling layer is provided in the first installation gap and the second installation gap.

[0010] The mortise and tenon structure of this utility model, composed of protrusions and grooves, is in a semi-consolidated and semi-living hinge state, capable of withstanding greater bending moments. Furthermore, under earthquake action, the mortise and tenon structure is allowed to deform to a certain extent, thereby achieving a shock-absorbing effect. Furthermore, a shock-absorbing component is added to the mortise and tenon structure to dissipate earthquake energy through deformation of the shock-absorbing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a shield tunnel according to the present invention;

[0012] Figure 2 For this utility model Figure 1 A magnified view of point A1 in the middle;

[0013] Figure 3 This is a three-dimensional diagram of the inner tube segment in the present utility model;

[0014] Figure 4 It is a three-dimensional diagram of the inner and outer segments of the utility model;

[0015] Figure 5 It is a three-dimensional diagram of the shock absorbing assembly in the utility model;

[0016] In the figure, 1 is a standard block, 2 is an adjacent block, 3 is a capping block, 4 is an outer segment, 5 is an inner segment, 6 is a shock-absorbing assembly, 7 is a filling layer, 8 is a protrusion, and 9 is a groove; 601 is a fixing plate, 602 is a bolt, 603 is a steel sheet, 604 is a rubber sheet, 801 is a side surface one, 802 is a bottom surface one, 901 is a side surface two, and 902 is a bottom surface two. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0019] Reference Figure 1-5, a multi-directional shock-absorbing structure based on mortise and tenon connection, comprising an inner tube sheet 5 and an outer tube sheet 4, the edge position of the inner tube sheet 5 and the edge position of the outer tube sheet 4 are connected by bolts 602, the inner tube sheet 5 and the outer tube sheet 4 are both arc-shaped, the outer diameter of the inner tube sheet 5 is equal to the inner diameter of the outer tube sheet 4, the inner wall of the outer tube sheet 4 is provided with a protrusion 8, the outer wall of the inner tube sheet 5 is provided with a groove 9, the thickness of the protrusion 8 is less than the depth of the groove 9, the longitudinal width of the protrusion 8 is equal to the longitudinal width of the groove 9, the circumferential length of the protrusion 8 is less than the circumferential length of the groove 9, when installed, the protrusion 8 is arranged in the groove 9, and an installation gap 1 is provided between the side surface 1 801 of the protrusion 8 and the side surface 2 901 of the groove 9, and an installation gap 2 is provided between the bottom surface 1 802 of the protrusion 8 and the bottom surface 2 902 of the groove 9, and a shock-absorbing component 6 is fixed in both the installation gap 1 and the installation gap 2.

[0020] Reference Figure 5 The shock-absorbing assembly 6 includes two fixing plates 601. Several steel sheets 603 are interposed between the two fixing plates 601. Rubber sheets 604 are interposed between adjacent steel sheets 603, and rubber sheets 604 are also interposed between the steel sheets 603 and the fixing plates 601. Bolts 602 are provided on the fixing plates 601, and the fixing plates 601 are fixedly connected to the outer tube segment 4 or the inner tube segment 5 via the bolts 602. One fixing plate 601 of the shock-absorbing assembly 6, located in the first installation gap, is fixedly connected to the first side 801 of the protrusion 8 via the bolts 602, while the other fixing plate 601 is fixedly connected to the second side 901 of the groove 9 via the bolts 602.

[0021] One fixing plate 601 of the shock-absorbing assembly 6 located in the second installation gap is fixedly connected to the bottom surface 1 802 of the protrusion 8 via bolts 602. The other fixing plate 601 is fixedly connected to the bottom surface 2 902 of the groove 9 via bolts 602. In the axial direction of the shield tunnel, the distance between two adjacent shock-absorbing assemblies 6 is 90-150 cm, preferably 100 cm. A filling layer 7 is provided in the first and second installation gaps. Asphalt is used as the shock-absorbing filling material, but other filling materials such as asphalt concrete can also be used.

[0022] A shield tunnel includes three standard blocks 1, which are connected end to end. The ends of the standard blocks 1 on both sides are connected to adjacent blocks 2, and the two adjacent blocks 2 are connected together by a capping block 3. The standard blocks 1, adjacent blocks 2, and capping blocks 3 form a closed circular tunnel. The standard blocks 1, adjacent blocks 2, and capping blocks 3 are all composed of inner tube segments 5 and outer tube segments 4. A shock-absorbing assembly 6 is provided between the inner tube segments 5 and the outer tube segments 4.

[0023] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-directional shock-absorbing structure based on mortise and tenon joints, characterized by: It includes an inner tube segment and an outer tube segment, both of which are arc-shaped. The inner wall of the outer tube segment is provided with a protrusion, and the outer wall of the inner tube segment is provided with a groove. During installation, the protrusion is set in the groove, and an installation gap 1 is provided between the side 1 of the protrusion and the side 2 of the groove. An installation gap 2 is provided between the bottom surface 1 of the protrusion and the bottom surface 2 of the groove. Shock-absorbing components are fixed in both the installation gap 1 and the installation gap 2.

2. The multi-directional shock-absorbing structure based on mortise and tenon joints according to claim 1, characterized in that: The shock absorbing assembly includes two fixing plates, a plurality of steel sheets are arranged between the two fixing plates, a rubber sheet is arranged between two adjacent steel sheets, and a rubber sheet is also arranged between the steel sheets and the fixing plates.

3. The multi-directional shock-absorbing structure based on mortise and tenon joints according to claim 2, characterized in that: Bolts are provided on the fixing plate, and the fixing plate is fixedly connected to the outer tube segment or the inner tube segment through the bolts.

4. The multi-directional shock-absorbing structure based on mortise and tenon joints according to claim 1, characterized in that: In the axial direction of the shield tunnel, the distance between two adjacent shock-absorbing components is 90-150 cm.

5. The multi-directional shock-absorbing structure based on mortise and tenon joints according to claim 1, characterized in that: Filling layers are provided in the first installation gap and the second installation gap.

6. A shield tunnel, characterized by: It includes three standard blocks, which are connected end to end. The ends of the standard blocks on both sides are connected to the adjacent blocks. The two adjacent blocks are connected together through the capping block. The standard blocks, adjacent blocks and capping blocks form a closed circular tunnel. The standard blocks, adjacent blocks and capping blocks are all composed of inner pipe segments and outer pipe segments. A shock-absorbing assembly is provided between the inner pipe segments and the outer pipe segments.

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