CN214170556U - A shock attenuation protection system and tunnel for tunnel - Google Patents

Abstract

The utility model belongs to the technical field of the tunnel engineering technique and specifically relates to a shock attenuation protection system and tunnel for tunnel is related to. A shock attenuation protection system for tunnel is in including bow member and setting a plurality of secondary lining becket bridles of bow member inboard still include buffering pressure relief device and flexible waterproof damping device, buffering pressure relief device sets up between the both ends of bow member, flexible waterproof damping device sets up adjacent two seam crossing between the secondary lining becket bridle. The utility model provides a shock attenuation protection system and tunnel for tunnel can be under soft broken geological conditions such as soft soil property, soft lower hard, rich water weak, the dilatancy soil property under the construction, and effectual reduction construction disturbance and earthquake disaster are to the influence of wearing the tunnel down, improve the stability and the security in tunnel, reduce the influence to existing building.

Description

A shock attenuation protection system and tunnel for tunnel

Technical Field

The utility model belongs to the technical field of the tunnel engineering technique and specifically relates to a shock attenuation protection system and tunnel for tunnel is related to.

Background

With the rapid development of tunnel engineering in China, the situation of downwards penetrating an existing building often occurs, when tunnel construction of downwards penetrating the existing building is carried out, except for considering weak and broken geology such as loose soil, soft upper parts and hard lower parts, water-rich and weak soil, expansive and contractive soil and the like, adverse factors such as disturbance and earthquake disasters during construction are also considered, and if a reasonable and effective damping protection system cannot be adopted, great adverse effects are generated on the safety quality and progress of downwards penetrating tunnel construction and the upper existing building.

In the prior tunnel construction, a common steel arch structure is usually adopted as primary support to bear the deformation of surrounding rocks, the internal force redistribution and self-stability recovery capability of the surrounding rocks during displacement and deformation under the action of self-weight load, construction disturbance and earthquake load are ignored, and the countermeasures of heavy mechanical driving during construction, driving during blasting and operation and earthquake disturbance are ignored during secondary lining construction, so that the bearing capability is weaker, and the construction safety guarantee, the cost control and the progress requirement are all hindered.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shock attenuation protection system and tunnel for tunnel, to alleviate the deformation that the ordinary steel bow member structure of adoption that exists among the prior art undertakes the country rock as preliminary bracing, neglected the country rock at its dead weight load, internal force redistribution and self-stabilization restoring force when taking place displacement and deformation under construction disturbance and the earthquake load effect, when secondary lining implementation, neglected heavy machinery during the construction and travel, driving during blasting and the operation, the adoption of earthquake disturbance counter-measure, be difficult to resist construction disturbance and earthquake disaster's influence, lead to the relatively poor technical problem of stability and security of wearing the tunnel down.

Based on above-mentioned purpose, the utility model provides a shock attenuation protection system for tunnel, be in including bow member and setting a plurality of secondary lining collars of bow member inboard still include buffering pressure relief device and flexible waterproof damping device, buffering pressure relief device sets up between the both ends of bow member, flexible waterproof damping device sets up adjacent two seam crossing between the secondary lining collar.

Further, in some optional embodiments, the buffer pressure reducing device comprises an upper pressure plate, a lower pressure plate, a first bolt, a second bolt and a first spring, wherein the upper pressure plate is located above the lower pressure plate, and the plate surface of the upper pressure plate is parallel to the plate surface of the lower pressure plate; the first bolt is connected with the upper pressure plate, and the second bolt is connected with the lower pressure plate; the first spring is located between the upper pressing plate and the lower pressing plate, one end of the first spring is fixedly connected with the first bolt, and the other end of the first spring is fixedly connected with the lower pressing plate.

Further, in some optional embodiments, the buffer pressure relief device further comprises a cushion pad fixedly connected to the lower surface of the upper pressure plate.

Further, in some optional embodiments, the buffer pressure reducing device further includes a second spring and a pressing block, one end of the second spring is fixedly connected to the lower pressing plate, the other end of the second spring is fixedly connected to one end of the pressing block, and the other end of the pressing block abuts against the cushion pad.

Further, in some optional embodiments, the buffer pressure reducing device further comprises a limiting sleeve, the limiting sleeve is fixedly connected with the lower pressing plate, the second spring is located inside the limiting sleeve, and the pressing block can reciprocate relative to the length direction of the limiting sleeve.

Further, in some optional embodiments, the flexible waterproof and shock-absorbing device comprises a seam filling part, a water stop, an embedded bracket and an energy absorbing part, wherein the seam filling part is arranged between two adjacent secondary lining pipe rings, and the water stop penetrates through the seam filling part and is fixed between two adjacent secondary lining pipe rings; the pre-buried support with secondary lining cutting collar fixed connection, energy-absorbing portion fixed connection is between two adjacent pre-buried supports of secondary lining cutting collar.

Further, in some optional embodiments, the embedded support includes a first support and a second support, the first support and the second support are arranged at intervals along the length direction of the secondary lining pipe ring, the energy absorption portion is fixedly connected between the first support of one of the secondary lining pipe rings and the second support of the other secondary lining pipe ring in two adjacent secondary lining pipe rings.

Further, in some optional embodiments, the number of the first bolts, the number of the second bolts, and the number of the first springs are eight, the eight first bolts are symmetrically arranged on two sides of the upper pressure plate, four first bolts are respectively arranged on two sides of the upper pressure plate, and the positions of the eight second bolts correspond to the positions of the eight first bolts one to one.

Further, in some optional embodiments, the number of the cushion pads, the number of the pressing blocks, and the number of the second springs are six, six cushion pads are symmetrically arranged on the lower surface of the upper pressure plate, and the positions of eight pressing blocks correspond to the positions of eight cushion pads one to one.

Based on the above object, the utility model also provides a tunnel, include a shock attenuation protection system for tunnel.

Compared with the prior art, the beneficial effects of the utility model mainly lie in:

the utility model provides a shock attenuation protection system for tunnel, be in including bow member and setting a plurality of secondary lining collars of bow member inboard still include buffering pressure relief device and flexible waterproof damping device, buffering pressure relief device sets up between the both ends of bow member, flexible waterproof damping device sets up adjacent two seam crossing between the secondary lining collar.

Based on this structure, the utility model provides a shock attenuation protection system for tunnel can be under soft broken geological conditions such as soft soil texture, soft lower hard, rich water weak, the dilatancy soil texture under the construction, and effectual reduction construction disturbance and earthquake disaster are to the influence of wearing the tunnel down, improve the stability and the security in tunnel, reduce the influence to existing building. When a train passes or an earthquake occurs above the tunnel, the buffer pressure relief device can be extruded and deformed, and at the moment, the surrounding rock can generate internal force redistribution until self-stability is achieved. Through setting up flexible waterproof damping device at the seam crossing between two adjacent secondary lining pipe ring, reduce construction, all kinds of disturbance influences during the operation under the waterproof prerequisite of assurance, adapt to the big deformation that produces because the earthquake simultaneously.

The utility model provides a tunnel is owing to used the utility model provides a shock attenuation protection system for tunnel has reduced construction disturbance and earthquake disaster to the influence in tunnel, has reduced the influence to existing building, and the stability and the security in tunnel are higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a shock absorption protection system for a tunnel according to a first embodiment of the present invention;

fig. 2 is a front view of a buffering and pressure reducing device in a shock absorption and protection system for a tunnel according to a first embodiment of the present invention;

fig. 3 is a top view of a buffering and pressure reducing device in a shock absorption and protection system for a tunnel according to an embodiment of the present invention;

fig. 4 is a longitudinal sectional view of a shock absorption protection system for a tunnel according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a flexible waterproof damping device for use in a shock absorption protection system of a tunnel according to an embodiment of the present invention.

Icon: 10-a buffer pressure relief device; 20-flexible waterproof shock-absorbing device; 101-an arch frame; 102-secondary lining pipe ring; 103-an upper platen; 104-a lower press plate; 105-a first bolt; 106-a second bolt; 107-a first spring; 108-a cushion; 109-a second spring; 110-an extrusion block; 111-a stop collar; 112-caulking portions; 113-water stop; 114-an energy absorbing portion; 115-a first bracket; 116-second bracket.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 5, the present embodiment provides a shock absorption and protection system for a tunnel, which includes an arch 101 and a plurality of secondary lining pipe rings 102 disposed inside the arch 101, and further includes a buffering and pressure reducing device 10 and a flexible waterproof shock absorption device 20, wherein the buffering and pressure reducing device 10 is disposed between two ends of the arch 101, and the flexible waterproof shock absorption device 20 is disposed at a seam between two adjacent secondary lining pipe rings 102.

Based on this structure, the shock attenuation protection system for tunnel that this embodiment provided can be under soft broken geological conditions such as soft soil texture, soft lower hard, rich water weak, the dilatancy soil texture under the construction, and effectual reduction construction disturbance and earthquake disaster are to the influence of wearing the tunnel down, improve the stability and the security in tunnel, reduce the influence to existing building. When a train passes through or an earthquake occurs above the tunnel, the buffer decompression device 10 can be extruded and deformed, and at the moment, the surrounding rock can generate internal force redistribution until self-stability is achieved. By arranging the flexible waterproof damping device 20 at the joint between two adjacent secondary lining pipe rings 102, various disturbance influences during construction and operation are reduced on the premise of ensuring waterproofness, and meanwhile, the flexible waterproof damping device adapts to large deformation caused by earthquakes.

The arch 101 in this embodiment is a steel arch.

Further, in some optional embodiments, the buffer decompression device 10 includes an upper pressing plate 103, a lower pressing plate 104, a first bolt 105, a second bolt 106, and a first spring 107, the upper pressing plate 103 is located above the lower pressing plate 104, and a plate surface of the upper pressing plate 103 is parallel to a plate surface of the lower pressing plate 104; the first bolt 105 is connected with the upper pressure plate 103, and the second bolt 106 is connected with the lower pressure plate 104; the first spring 107 is located between the upper platen 103 and the lower platen 104, one end of the first spring 107 is fixedly connected with the first bolt 105, and the other end of the first spring 107 is fixedly connected with the lower platen 104.

Referring to fig. 1, in the present embodiment, the number of the buffer decompression devices 10 is two, and the two buffer decompression devices are symmetrically arranged at positions close to two ends of the arch 101. Referring to fig. 2, a first bolt 105 penetrates through a through hole in the upper pressure plate 103, a second bolt 106 penetrates through a through hole in the lower pressure plate 104, one end of a first spring 107 is fixedly connected with the first bolt 105, and the other end of the first spring 107 is fixedly connected with the lower pressure plate 104, so that when a train passes through the tunnel or an earthquake occurs, the first spring 107 can be elastically deformed, and the internal force of the surrounding rock is distributed until the surrounding rock is self-stabilized.

Further, in some alternative embodiments, the cushioned pressure relief device 10 further includes a cushion pad 108, the cushion pad 108 being fixedly attached to a lower surface of the upper platen 103.

By providing the cushion pad 108, the cushion performance can be further improved.

The cushion pad 108 may be made of shock absorbing rubber.

Further, in some alternative embodiments, referring to fig. 2, the buffer pressure reducing device 10 further includes a second spring 109 and a pressing block 110, one end of the second spring 109 is fixedly connected to the lower pressing plate 104, the other end of the second spring 109 is fixedly connected to one end of the pressing block 110, and the other end of the pressing block 110 abuts against the cushion pad 108.

Through setting up second spring 109 and extrusion piece 110, can cooperate with first spring 107, when there is the train to pass or take place the earthquake above the tunnel, first spring 107 and second spring 109 can take place elastic deformation for the country rock produces internal force redistribution, until reaching the self-stabilization.

Further, in some alternative embodiments, referring to fig. 2, the pressure buffering and reducing device 10 further includes a limiting sleeve 111, the limiting sleeve 111 is fixedly connected to the lower pressing plate 104, the second spring 109 is located inside the limiting sleeve 111, and the pressing block 110 can reciprocate relative to the length direction of the limiting sleeve 111.

The stop collar 111 plays a limiting and guiding role in the extrusion block 110, prevents the extrusion block 110 from being excessively displaced in the horizontal direction, and meanwhile, the stop collar 111 can protect the second spring 109, prevent sundries from entering the telescopic range of the second spring 109, and ensure the normal use of the second spring 109.

Further, in some optional embodiments, the flexible waterproof shock-absorbing device 20 includes a caulking portion 112, a water stop 113, an embedded bracket and an energy absorbing portion 114, the caulking portion 112 is disposed between two adjacent secondary lining pipe rings 102, and the water stop 113 passes through the caulking portion 112 and is fixed between two adjacent secondary lining pipe rings 102; the pre-embedded brackets are fixedly connected with the secondary lining pipe rings 102, and the energy absorption part 114 is fixedly connected between the pre-embedded brackets of two adjacent secondary lining pipe rings 102.

When a train passes through or an earthquake occurs above the tunnel, the joint filling part 112 can dissipate a part of energy transmitted by train load and earthquake load, and the water stop belt 113 penetrates through the joint filling part 112 and is fixed between two adjacent secondary lining pipe rings 102, so that the centralized processing and water prevention are facilitated, and the size of the water stop belt meets the specification requirement.

In this embodiment, the material of the caulking portion 112 and the energy absorbing portion 114 is a high-strength composite elastic material, such as polyurethane, which has a certain self-resetting function, so that the residual strain of a part of the tunnel can be recovered after construction disturbance and earthquake, the risk of tunnel construction is reduced, and the post-earthquake maintenance is reduced.

In this embodiment, the water stop 113 is an existing buried water stop.

Further, in some optional embodiments, the embedded support comprises a first support 115 and a second support 116, the first support 115 and the second support 116 are arranged at intervals along the length direction of the secondary lining pipe ring 102, and in two adjacent secondary lining pipe rings 102, the energy absorbing part 114 is fixedly connected between the first support 115 of one secondary lining pipe ring 102 and the second support 116 of the other secondary lining pipe ring 102.

Referring to fig. 5, in two adjacent secondary lining pipe rings 102, the energy absorbing part 114 is fixedly connected between a first bracket 115 of the secondary lining pipe ring 102 on the right side and a second bracket 116 of the secondary lining pipe ring 102 on the left side.

Further, in some alternative embodiments, referring to fig. 3, the number of the first bolts 105, the number of the second bolts 106, and the number of the first springs 107 are eight, the eight first bolts 105 are symmetrically arranged on two sides of the upper pressure plate 103, four first bolts 105 are respectively arranged on two sides of the upper pressure plate 103, and the positions of the eight second bolts 106 correspond to the positions of the eight first bolts 105 one by one.

Through arranging eight first bolts 105 symmetrically on the both sides of top board 103, four first bolts 105 are respectively arranged on the both sides of top board 103, and such mode can guarantee that the atress is even, guarantees overall structure stable.

Further, in some alternative embodiments, the number of the cushion pads 108, the number of the pressing blocks 110, and the number of the second springs 109 are six, six cushion pads 108 are symmetrically arranged on the lower surface of the upper platen 103, and the positions of the eight pressing blocks 110 correspond to the positions of the eight cushion pads 108 one by one.

As shown in fig. 3, six second springs 109 are located inside the area surrounded by the eight first bolts 105. Optionally, the position of the second spring 109 corresponds to the middle position of two adjacent first springs 107, that is, the first springs 107 and the second springs 109 are arranged at staggered intervals, so that the buffering and shock absorbing effects can be further improved, and the stability of the whole structure is ensured.

Example two

This embodiment provides a tunnel, include the utility model discloses a shock attenuation protection system for tunnel that provides.

The tunnel that this embodiment provided, owing to used the utility model provides a shock attenuation protection system for tunnel has reduced construction disturbance and earthquake disaster to the influence in tunnel, has reduced the influence to existing building, and the stability and the security in tunnel are higher.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a shock attenuation protection system for tunnel, is in including bow member and setting a plurality of secondary lining becket bridles of bow member inboard, its characterized in that still includes buffering pressure relief device and flexible waterproof damping device, buffering pressure relief device sets up between the both ends of bow member, flexible waterproof damping device sets up adjacent two seam crossing between the secondary lining becket bridle.

2. The shock absorption and protection system for the tunnel according to claim 1, wherein the buffer and decompression device comprises an upper pressing plate, a lower pressing plate, a first bolt, a second bolt and a first spring, the upper pressing plate is located above the lower pressing plate, and the plate surface of the upper pressing plate is parallel to the plate surface of the lower pressing plate; the first bolt is connected with the upper pressure plate, and the second bolt is connected with the lower pressure plate; the first spring is located between the upper pressing plate and the lower pressing plate, one end of the first spring is fixedly connected with the first bolt, and the other end of the first spring is fixedly connected with the lower pressing plate.

3. The shock absorbing and protecting system for tunnel according to claim 2, wherein said shock absorbing and pressure reducing device further comprises a cushion pad fixedly connected to a lower surface of said upper platen.

4. The system according to claim 3, wherein the shock absorbing and pressure reducing device further comprises a second spring and a pressing block, one end of the second spring is fixedly connected with the lower pressing plate, the other end of the second spring is fixedly connected with one end of the pressing block, and the other end of the pressing block abuts against the cushion pad.

5. The shock absorption and protection system for the tunnel according to claim 4, further comprising a limiting sleeve, wherein the limiting sleeve is fixedly connected with the lower pressing plate, the second spring is located inside the limiting sleeve, and the pressing block can reciprocate relative to the length direction of the limiting sleeve.

6. The shock absorption and protection system for the tunnel according to claim 1, wherein the flexible waterproof shock absorption device comprises a caulking part, a water stop, an embedded bracket and an energy absorption part, the caulking part is arranged between two adjacent secondary lining pipe rings, and the water stop penetrates through the caulking part and is fixed between two adjacent secondary lining pipe rings; the pre-buried support with secondary lining cutting collar fixed connection, energy-absorbing portion fixed connection is between two adjacent pre-buried supports of secondary lining cutting collar.

7. The shock absorption and protection system for the tunnel according to claim 6, wherein the embedded bracket comprises a first bracket and a second bracket, the first bracket and the second bracket are arranged at intervals along the length direction of the secondary lining pipe rings, the energy absorption portion is fixedly connected between the first bracket of one secondary lining pipe ring and the second bracket of the other secondary lining pipe ring in two adjacent secondary lining pipe rings.

8. The shock absorption and protection system for the tunnel according to any one of claims 2 to 4, wherein the number of the first bolts, the number of the second bolts and the number of the first springs are eight, the eight first bolts are symmetrically arranged on two sides of the upper pressure plate, four first bolts are respectively arranged on two sides of the upper pressure plate, and the positions of the eight second bolts correspond to the positions of the eight first bolts one by one.

9. The shock absorbing and protecting system for the tunnel according to claim 4, wherein the number of the cushion pads, the number of the squeezing blocks and the number of the second springs are all six, six cushion pads are symmetrically arranged on the lower surface of the upper pressure plate, and the positions of eight squeezing blocks correspond to the positions of eight cushion pads one by one.

10. A tunnel comprising a shock absorbing protection system for tunnels according to any one of claims 1 to 9.

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