Shield butt joint section shield tail segment node connection energy absorption device

Abstract

The utility model discloses a shield butt joint section shield tail segment node connection energy absorption device which comprises a protection steel plate, the protection steel plate is arranged on the outer side of a segment, a sealing steel plate is arranged on the outer side of the protection steel plate, V-shaped grooves are formed in the two sides of the sealing steel plate, the protection steel plate and the sealing steel plate are arc-shaped steel plates, and a pulling steel plate is welded to the outer side of the sealing steel plate. A connecting seat is arranged below one side of the tie steel plate and fixedly connected with the anchoring steel plate, a fixing rod is fixedly connected to the connecting seat and sleeved with a belleville spring, threads are arranged at one end of the fixing rod, a fixing hole is formed in the tie steel plate, and one end of the fixing rod penetrates through the tie steel plate to be connected with a nut; the shield tail segment node protection device achieves double protection on shield tail segment nodes through the protection steel plates and the sealing steel plates, the tie steel plates and the fixing rods are used in cooperation, the fixing rods are sleeved with the belleville springs, and the shield tail segment node protection device adapts to a shield underground butt joint segment rigidity continuous large variation tunnel structure; and generated vibration and impact force can be absorbed and dispersed in the tunnel operation process.

Description

Technical Field

[0001] This utility model relates to the field of shield tail segment node connection technology, specifically, to an energy absorption device for shield tail segment node connection in shield tunnel docking section. Background Technology

[0002] With the continuous advancement of urbanization, the development and utilization of urban underground space is increasing, becoming an important way to solve urban traffic congestion and expand urban functions. Against this backdrop, the shield tunneling method, as a highly efficient tunnel construction method, is widely used. The shield tunneling method has advantages such as fast construction speed, minimal impact on the ground, and high safety, and is widely applied in subway, highway tunnels, municipal engineering, and other fields.

[0003] However, in the shield tunneling section, especially at the tail segment joint, the surrounding geological conditions are complex and the construction environment is variable. The tunnel structure exhibits significant differences in longitudinal stiffness, leading to violent responses during tunnel operation. Under complex geological conditions, especially in areas with high water pressure, traditional connection structures may not provide sufficient connection strength and water-stopping effect, resulting in structural cracking and leakage. Secondly, during tunnel operation, any changes in external loads or geological conditions will cause significant vibration and impact forces to occur in the tunnel structure with its continuously varying stiffness under violent responses. These forces will be transmitted to the connection devices without effective buffering, leading to problems such as loosening or damage of the connection devices, structural deformation, and ultimately affecting the connection strength and stability between segments.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In response to the problems in related technologies, this utility model proposes an energy absorption device for the connection of shield tail segment nodes in shield tunnel docking sections, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An energy-absorbing device for the connection of shield tail segments in a tunnel boring machine (TBM) includes a protective steel plate located on the outside of the segment. A sealing steel plate is located on the outside of the protective steel plate, and V-shaped bevels are provided on both sides of the sealing steel plate. Both the protective steel plate and the sealing steel plate are arc-shaped steel plates. A tie steel plate is welded to the outside of the sealing steel plate. A connecting seat is located below one side of the tie steel plate. The connecting seat is fixedly connected to an anchoring steel plate. A fixing rod is fixedly connected to the connecting seat. A butterfly spring is sleeved on the fixing rod. One end of the fixing rod is threaded. A fixing hole is provided on the tie steel plate. One end of the fixing rod passes through the tie steel plate and is connected to a nut.

[0008] Furthermore, in order to fix the anchoring steel plate, the anchoring steel plate is installed on the inner arc surface of the segment by means of rebar installation.

[0009] Further, in order to facilitate the installation of the protection steel sheet and the sealing steel sheet, a plurality of bolts are fixedly connected to one side of the segment, the plurality of bolts are arranged in a ring shape around the segment, the protection steel sheet and the sealing steel sheet are provided with mounting holes, and one end of the bolt is connected with a nut through the mounting hole.

[0010] Further, a stop steel plate is welded to one side of the sealing steel plate, and one end of the stop steel plate is welded to the shield tail.

[0011] Further, the stop steel plate is in the shape of a trapezoid, and the stop steel plate is provided with a hoisting hole.

[0012] Further, a fluorine butyl rubber plate is connected to the inner wall of the protection steel plate, and the fluorine butyl rubber plate abuts against the sealing gasket on the segment.

[0013] Further, one side of the sealing steel plate is welded to the shield tail.

[0014] Further, in order to be capable of grouting the shield tail gap, the sealing steel plate is provided with a shield tail gap grouting hole.

[0015] The utility model discloses the beneficial effects are:

[0016] (1), through the cooperation of the tie plate and the fixed rod, and the fixed rod is provided with a butterfly spring, can absorb and disperse the vibration and impact force generated in the tunnel operation. When the segment vibrates due to external factors, the butterfly spring can quickly respond, and the direct impact on the connecting device and the segment is reduced by absorbing the part of energy through the elastic deformation of the butterfly spring. This buffering capacity not only protects the connecting device from damage, but also reduces the fatigue damage caused by vibration and prolongs the service life of the equipment.

[0017] (2), through the protection steel plate and the sealing steel plate, the shield tail segment is realized double protection, and through the V-shaped groove on both sides of the sealing steel plate, when the plurality of sealing steel plates are assembled, the contact area of the welding area can be increased, the welding is more firm, and the uniformity and the appearance of the welding are improved. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0019] Figure 1 It is a kind of shield butt joint segment shield tail segment node connection energy-absorbing device front view according to the utility model embodiment;

[0020] Figure 2 is a shield butt joint section shield tail pipe piece node connection energy absorption device structural diagram according to an embodiment of the utility model;

[0021] Figure 3 is Figure 2 The enlarged schematic view at A in the middle;

[0022] Figure 4 is a shield butt joint section shield tail pipe piece node connection energy absorption device sealing steel plate structural diagram according to an embodiment of the utility model.

[0023] In the figure,

[0024] 1, protective steel plate; 2, pipe piece; 3, sealing steel plate; 4, V-shaped groove; 5, tie steel plate; 6, connecting seat; 7, anchoring steel plate; 8, fixing rod; 9, butterfly spring; 10, fixing hole; 11, bolt; 12, mounting hole; 13, stop steel plate; 14, hoisting hole; 15, fluorine butyl rubber plate; 16, shield tail gap grouting hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] According to the embodiments of the utility model, a shield butt joint section shield tail pipe piece node connection energy absorption device is provided.

[0027] Embodiment one

[0028] As Figures 1-4As shown, the shield butt joint section shield tail pipe piece node connection energy absorption device according to the utility model embodiment, including protection steel sheet 1, the quantity of protection steel sheet 1 is multiple, multiple protection steel sheet 1 can be assembled into a ring, protection steel sheet 1 is located at the outside of pipe piece 2, fluorine butyl rubber plate 15 is connected on the inner wall of protection steel sheet 1, fluorine butyl rubber plate 15 is in abutment with the sealing gasket on pipe piece 2, for enhancing sealing effect, the outside of protection steel sheet 1 is equipped with sealing steel sheet 3, the both ends of sealing steel sheet 3 are equipped with V type bevel 4, one side of sealing steel sheet 3 is welded with shield tail, protection steel sheet 1 and sealing steel sheet 3 are arc steel sheet, sealing steel sheet 3 is divided into special-shaped steel sheet one, standard steel sheet and special-shaped steel sheet two, special-shaped steel sheet one is shorter than protection steel sheet 1, the arc length of standard steel sheet is consistent with protection steel sheet 1, special-shaped steel sheet two is longer than protection steel sheet 1, protection steel sheet 1 and sealing steel sheet 3 are equipped with steel sheet gap grouting hole, for filling epoxy resin mortar between pipe piece 2 and steel sheet gap, one side of pipe piece 2 is fixedly connected with multiple bolts 11, multiple bolts 11 are arranged around pipe piece 2, installation hole 12 is equipped on protection steel sheet 1 and sealing steel sheet 3, one end of bolt 11 passes through installation hole 12 and is connected with nut, one side of sealing steel sheet 3 is welded with stop steel sheet 13, one end of stop steel sheet 13 is welded with shield tail, the shape of stop steel sheet 13 is trapezoidal, for preventing the retreat of shield tunneling machine after jack unloading, provides additional security, hoisting hole 14 is equipped on stop steel sheet 13, for facilitating the installation of stop steel sheet 13, shield tail gap grouting hole 16 is equipped on sealing steel sheet 3, for filling cement to shield tail gap. Through the above scheme, when installing the connection energy absorption device, one installation hole 12 of a protection steel sheet 1 can be installed on the bolt 11, and then the special-shaped steel sheet one and the protection steel sheet 1 are synchronously installed, which can reserve installation positions on both sides of the protection steel sheet 1, facilitate the assembly of other protection steel sheets 1, and realize the staggered installation of the sealing steel sheet 3 and the protection steel sheet 1. Multiple protection steel sheets 1 and sealing steel sheets 3 are installed alternately from top to bottom and left to right, and the closed loop is completed at the position of the arch bottom oil cylinder. Finally, the special-shaped steel sheet two is installed to ensure that the sealing steel sheet 3 can be assembled into a ring. When assembling multiple protection steel sheets 1 and sealing steel sheets 3, the connection between the plates is realized by welding, and then the protection steel sheet 1 is extruded on the sealing gasket on the pipe piece 2 by tightening the nut. After the sealing gasket is extruded in place, welding between the sealing steel sheet 3 and the inner wall of the shield tail is performed. After welding is completed, the stop steel sheet 13 is installed, and the stop steel sheet 13 is welded with the inner wall of the shield tail and the sealing steel sheet 3 on both sides, thereby fixing the stop steel sheet 13.

[0029] As Figures 1-4As shown, the sealing steel plate 3 outside is welded with a tie steel plate 5, the lower side of the tie steel plate 5 is provided with a connecting seat 6, the connecting seat 6 is fixedly connected with an anchoring steel plate 7, the connecting seat 6 is fixedly connected with a fixed rod 8, the fixed rod 8 is sleeved with a butterfly spring 9, one end of the fixed rod 8 is provided with a screw thread, the tie steel plate 5 is provided with a fixed hole 10, one end of the fixed rod 8 passes through the fixed hole 10 of the tie steel plate 5 and is connected with a nut, and the anchoring steel plate 7 is installed on the inner arc surface of the pipe piece 2 by the way of anchoring. Through the above scheme, when the tie steel plate 5 needs to be installed, the butterfly spring 9 is sleeved on the fixed rod 8, one side of the tie steel plate 5 passes through the fixed hole 10 of the tie steel plate 5, the nut is rotated to make the tie steel plate 5 contact with the butterfly spring 9, the fixation of one side of the tie steel plate 5 is realized, the other end of the tie steel plate 5 is welded with the sealing steel plate 3, the fixation of the tie steel plate 5 is realized, and after the fixation of the tie steel plate 5 is completed, the shield tail gap can be filled with cement slurry through the shield tail gap grouting hole 16 to fill the possible gap and enhance the waterproof effect.

[0030] In summary, by means of the above technical scheme of the utility model, the tie steel plate 5 is used in cooperation with the fixed rod 8, and the butterfly spring 9 is sleeved on the fixed rod 8, so that the vibration and impact force generated in the tunnel operation process can be absorbed and dispersed. When the pipe piece 2 vibrates due to external factors, the butterfly spring 9 can quickly respond and absorb this part of energy through its elastic deformation, thereby reducing the direct impact on the connecting device and the pipe piece 2. This buffering capacity not only protects the connecting device from damage, but also reduces fatigue damage caused by vibration, prolongs the service life of the equipment, and realizes double protection of the shield tail pipe piece through the setting of the protective steel plate 1 and the sealing steel plate 3. In addition, by setting the V-shaped groove 4 on both sides of the sealing steel plate 3, the contact area of the welding area can be increased when multiple sealing steel plates 3 are assembled, the welding is more firm, and the uniformity and aesthetics of the welding are improved.

[0031] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shield tail segment joint energy absorption device for a shield interface segment, characterized in that, The utility model provides a protective steel sheet (1) is equipped with the pipe piece (2) outside, the protective steel sheet (1) outside is equipped with the sealing steel sheet (3), the sealing steel sheet (3) both sides are equipped with V type bevel (4), the protective steel sheet (1) and sealing steel sheet (3) are arc steel sheet, the sealing steel sheet (3) outside welding has the tie -in steel sheet (5), the tie -in steel sheet (5) one side below is equipped with the connecting seat (6), the connecting seat (6) is fixedly connected with the anchor steel sheet (7), the connecting seat (6) is fixedly connected with the fixed link (8) on, the fixed link (8) is equipped with the butterfly spring (9) on, the fixed link (8) one end is equipped with screw thread, the tie -in steel sheet (5) is equipped with the fixed hole (10), the fixed link (8) one end passes through the tie -in steel sheet (5) and is connected with the nut.

2. The energy-absorbing device for the joint connection of the tail segment of the shield tunneling machine according to claim 1, characterized in that, The anchor steel sheet (7) is installed in the inner arc surface of the pipe piece (2) by the way of planting the steel bar.

3. The energy-absorbing device for the joint connection of the tail segment of the shield tunneling machine according to claim 1, characterized in that, The pipe piece (2) one side is fixedly connected with a plurality of bolts (11), and the plurality of bolts (11) are arranged circumferentially around the pipe piece (2); the protective steel sheet (1) and the sealing steel sheet (3) are provided with mounting holes (12), and one end of the bolt (11) is connected with a nut through the mounting hole (12).

4. The energy-absorbing device for the joint between the tail segment and the pipe segment of the shield according to claim 1, characterized in that, The sealing steel sheet (3) is welded with a retreat stop steel sheet (13) on one side, and one end of the retreat stop steel sheet (13) is welded with a shield tail.

5. The energy-absorbing device for the joint connection of the tail segment of the shield tunneling machine according to claim 4, characterized in that, The retreat stop steel sheet (13) is in the shape of a trapezoid, and the retreat stop steel sheet (13) is provided with a hoisting hole (14).

6. The energy-absorbing device for the joint connection of the tail segment of the shield tunneling machine according to claim 1, characterized in that, The protective steel sheet (1) is connected with a fluoro-butyl rubber plate (15) on the inner wall, and the fluoro-butyl rubber plate (15) is in abutment with a sealing gasket on the pipe piece (2).

7. The energy-absorbing device for the joint connection of the tail segment of the shield tunneling machine according to claim 1, characterized in that, The sealing steel sheet (3) is welded with a shield tail on one side.

8. The energy-absorbing device for the joint connection of the tail segment of the shield tunneling machine according to claim 1, characterized in that, The sealing steel sheet (3) is provided with a shield tail gap grouting hole (16).

Images