CN220081434U - Tunnel buffer structure - Google Patents

Abstract

The utility model discloses a tunnel buffer structure, which comprises a buffer structure body, wherein a plurality of rectangular grooves are formed in the outer side wall of the buffer structure body along the length direction of the buffer structure body, and pressure relief holes are formed in the bottom wall of each rectangular groove; a blocking assembly is arranged in the rectangular groove, the rectangular frame is tightly embedded into the rectangular groove, the pressure relief hole is positioned on the inner side of the rectangular frame, one end of the rectangular frame is fixed with a net sheet, and the other end of the rectangular frame is detachably fixed with a baffle. According to the utility model, the rectangular groove is formed in the outer side wall of the buffer structure body, the pressure relief holes are arranged on the bottom wall of the rectangular groove, the sealing component is arranged at the rectangular groove, the pressure relief holes can be distributed according to a certain size or quantity rule, the pressure relief effect is ensured, the pressure relief holes are all arranged on the inner side of the rectangular groove, and the sealing component is arranged at the rectangular groove, so that the pressure relief holes can be reliably sealed or blocked by the sealing component.

Description

Tunnel buffer structure

Technical Field

The utility model relates to the field of tunnel structures, in particular to a tunnel buffer structure.

Background

The running speed of the train is improved, so that the traffic convenience is improved, but a series of scientific problems are brought, such as more remarkable aerodynamic effects along with the increase of the running speed of the train, such as the problems of increased running resistance, increased noise, micro-air pressure waves at the tunnel portal and the like, and the research of aerodynamic problems becomes an essential link for the development of a high-speed railway. When the high-speed train is extruded into the entrance end of the tunnel, an initial compression wave is formed in front of the locomotive, the compression wave propagates forward at a local sound speed, reaches the exit of the tunnel, most of energy is reflected back into the tunnel in the form of an expansion wave, and a small part of energy is radiated outwards in the form of a low-frequency pulse wave to form a micro-air pressure wave. The micro-pneumatic wave propagates far in the form of infrasonic waves. Under certain working conditions, the intensity of the micro-pressure wave is equivalent to the intensity of sonic boom generated when the aircraft runs at high speed, and huge environmental influence is generated. The research results of the aerodynamic effect of the existing high-speed railway tunnels with the speed of 200-250km/h and 300-350km/h show that when the speed of the train is lower than 300km/h, the tunnel portal micro-air pressure wave is basically proportional to the 3 rd power of the speed of the train, when the speed exceeds 300km/h, the tunnel portal micro-air pressure wave is obviously increased along with the speed increase, the micro-air pressure wave is basically proportional to the 9-14 th power of the speed of the train, and after the speed reaches 350km/h, part of tunnel portal micro-air pressure wave exceeds the standard limit value and is accompanied with a sound explosion phenomenon, and when the speed reaches 400km/h, the tunnel portal micro-air pressure wave problem possibly becomes a focus problem, and research is necessary to develop aiming at the tunnel portal micro-air pressure wave alleviation technology, so as to provide technical support for the development of the high-speed railway in China.

At present, the pressure relief holes of the buffer structure of most tunnels are fixed in hole opening positions, hole opening quantity and hole opening areas, and the pressure relief holes of the buffer structure of part of tunnels are arranged lower, so that the problems that small animals enter around the tunnel portal or sundries such as fallen leaves are blown in by wind and the like can exist; in addition, to the train speed of a different kind and tunnel buffer structure self condition, the quantity of seting up and the hole area of pressure release hole need be according to certain law setting, need carry out the partial shutoff to the pressure release hole sometimes, and to above-mentioned requirement, current tunnel buffer structure's pressure release hole design can not accomplish well.

Therefore, how to provide a tunnel buffer structure, so that the above problems can be overcome, is a problem that a person skilled in the art needs to solve.

Disclosure of Invention

In view of this, the present utility model provides a tunnel buffer structure.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a tunnel buffer structure, includes the buffer structure body that links to each other with tunnel lining and arrange outside the tunnel, a plurality of rectangle recesses have been seted up on the lateral wall of buffer structure body, a plurality of rectangle recesses are arranged in proper order along the length direction of buffer structure body, the tank bottom wall of rectangle recess is seted up with the pressure release hole of the inside intercommunication of buffer structure body; the sealing assembly is arranged in the rectangular groove and comprises a rectangular frame, a net piece and a baffle, the rectangular frame is tightly embedded into the rectangular groove, the pressure relief hole is positioned on the inner side of the rectangular frame, one end of the rectangular frame is fixed with the net piece, the other end of the rectangular frame is detachably fixed with the baffle, and the net piece is arranged between the pressure relief hole and the baffle.

Compared with the prior art, the tunnel buffer structure is provided by the utility model, the rectangular groove is formed in the outer side wall of the buffer structure body, the pressure relief hole is formed in the bottom wall of the rectangular groove, the sealing component is arranged at the rectangular groove, the wall thickness of the position, corresponding to the rectangular groove, of the buffer structure body is thinned by the aid of the design, the pressure relief hole is formed in the later stage conveniently, the pressure relief holes can be distributed according to a certain size or quantity rule, the pressure relief effect is ensured, the pressure relief holes are formed in the inner side of the rectangular groove, the sealing component is arranged at the rectangular groove, the pressure relief hole can be reliably sealed or blocked by the sealing component, namely the pressure relief hole can be sealed by the baffle, and impurities or animals outside the buffer structure body can be blocked by the mesh while reliability is ensured.

Preferably, the mesh shape of the mesh sheet is rectangular, and the mesh area is smaller than the hole area of the pressure relief hole. The design can ensure the blocking effect of the net sheet, and ensure that impurities or animals outside the buffer structure body pass through the pressure relief holes and enter the buffer structure body.

Preferably, the hole areas of the plurality of pressure release holes are sequentially reduced along the direction of entering the tunnel. The design can improve the buffering effect of the buffering structure body, and the design length of the buffering structure body can be shortened according to the topography of the tunnel portal.

Preferably, the pressure relief device further comprises a plurality of plugs, the pressure relief hole comprises a plurality of through holes, and the plugs can be inserted in the through holes in a sealing mode. The workman can block up the through-hole of partial quantity according to the actual conditions of buffer structure body and the running situation of train.

Preferably, two long inner side walls of the rectangular frame are respectively integrally formed with a long groove body, the groove length direction of the long groove body is parallel to the long side edge of the rectangular frame, the long groove body is vertically arranged, a side wall of the long groove body far away from the net sheet is provided with a plurality of openings penetrating through the inside of the long groove body, a plurality of partition blocks are sequentially integrally formed in the long groove body along the length direction of the long groove body, a plurality of the openings and a plurality of the partition blocks are sequentially staggered, and the openings are arranged above the partition blocks; the baffle comprises a plurality of rectangular plates, the rectangular plates are sequentially arranged along the groove length direction of the long groove body, a plurality of connecting plates are fixed on one side plate surface of each rectangular plate, each connecting plate is fixedly provided with a sliding rod, the sliding rods are parallel to the plate surface of each rectangular plate, the sliding rods can penetrate through the openings, the sliding rods on the same rectangular plate can be respectively and slidably embedded into the two long groove bodies, and the sliding rods can be abutted to the spacer blocks. This design ensures that the rectangular plate can be reliably dismantled, and the rectangular plate can selectively dismantle certain quantity according to the needs of shutoff, and a plurality of rectangular plates can be reliably with the pressure release hole shutoff.

Preferably, a handle is fixed on one side surface of the baffle, which is far away from the sliding rod. The workman utilizes the handle can carry out dismouting operation to the rectangular plate.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall isometric view of a tunnel buffer structure;

FIG. 2 is a partial isometric view of a tunnel buffer structure;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of a partial explosion of a tunnel buffer structure;

FIG. 5 is a partial isometric view of a tunnel buffer structure;

FIG. 6 is a partial isometric view of a tunnel buffer structure;

fig. 7 is a schematic diagram of a corresponding alternative pressure relief vent structure in a tunnel buffer structure.

In the figure:

the buffer structure comprises a buffer structure body 1, a rectangular groove 2, a pressure relief hole 3, a rectangular frame 4, a net sheet 5, a rectangular plate 6, a plug 7, a through hole 8, a long groove 9, a notch 10, a spacer block 11, a connecting plate 12, a slide bar 13 and a handle 14.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model discloses a tunnel buffer structure, which is characterized in that a rectangular groove 2 is formed in the outer side wall of a buffer structure body 1, a pressure relief hole 3 is arranged on the bottom wall of the rectangular groove 2, a blocking component is arranged at the rectangular groove 2, on one hand, the wall thickness of the position, corresponding to the rectangular groove 2, of the buffer structure body 1 is thinned, the pressure relief hole 3 is conveniently formed at the later stage, on the other hand, the pressure relief holes 3 can be regularly arranged according to a certain size or quantity, the pressure relief effect is ensured, the pressure relief holes 3 are all arranged on the inner side of the rectangular groove 2, and the blocking component is arranged at the rectangular groove 2, so that the pressure relief hole 3 can be reliably blocked or blocked by a baffle plate, namely, the screen 5 can block impurities or animals outside the buffer structure body 1 while ensuring reliable pressure relief; the baffle includes a plurality of rectangular plates 6, combines the design of elongated slot body 9 and slide bar 13 again, and rectangular plate 6 can be dismantled and assembled as required, and rectangular plate 6 can be installed on rectangular frame 4 reliably to its simple structure fault rate is low.

Examples

Referring to fig. 1-7, which are schematic views of whole and partial structures of an embodiment of the present utility model, the present utility model specifically discloses a tunnel buffer structure, which comprises a buffer structure body 1 connected with a tunnel lining and arranged outside the tunnel, wherein the cross-sectional shape of the buffer structure body 1 is a half arc shape, a horseshoe shape or other polygons, the cross-sectional shape of the buffer structure body 1 can be the same as the cross-sectional shape of the tunnel lining, and the buffer structure body 1 is communicated with the tunnel;

a plurality of rectangular grooves 2 are formed in the outer side wall of the buffer structure body 1, the plurality of rectangular grooves 2 are equally arranged on two sides of the buffer structure body 1, the plurality of rectangular grooves 2 are sequentially and equidistantly arranged along the length direction of the buffer structure body 1, and pressure relief holes 3 communicated with the inside of the buffer structure body 1 are formed in the bottom wall of the rectangular grooves 2; the pressure relief holes 3 are round holes or polygonal holes, and the pressure relief holes 3 can reduce the pressure wave first wave gradient when the train enters the tunnel at high speed, so as to relieve micro-air pressure waves at the tunnel portal; the buffer structure body 1 and the rectangular groove 2 are formed by one-step processing, and the bottom wall of the rectangular groove 2 is provided with a pressure relief hole 3 at the later stage according to the requirement.

A blocking component is arranged in the rectangular groove 2, the blocking component comprises a rectangular frame 4, a net piece 5 and a baffle, the rectangular frame 4 is tightly embedded in the rectangular groove 2, the pressure release hole 3 is positioned at the inner side of the rectangular frame 4, one end of the rectangular frame 4 is fixedly provided with the net piece 5, the other end of the rectangular frame 4 is detachably fixedly provided with the baffle, the net piece 5 is arranged between the pressure release hole 3 and the baffle, and the net piece 5 is designed to ensure that impurities and animals outside the buffer structure body 1 cannot enter the buffer structure body 1 through the pressure release hole 3 under the premise that the pressure release hole 3 is normally communicated with the inside of the buffer structure body 1; the purpose of the baffle design is to selectively block the pressure relief holes 3 according to the real-time operation of the train.

The mesh shape of the mesh 5 is rectangular, the mesh area is smaller than the hole area of the pressure relief hole 3, the mesh 5 can separate external impurities, and the external impurities cannot block the pressure relief hole 3.

In the present utility model, the hole areas of the plurality of pressure relief holes 3 may be sequentially reduced along the direction of entering the tunnel, and of course, the hole areas of the plurality of pressure relief holes 3 may also be unchanged, and specific requirements are determined according to the actual design and use conditions of the buffer structure body 1.

Further specifically, the pressure relief hole 3 comprises a plurality of plugs 7, the pressure relief hole 3 comprises a plurality of through holes 8, the shape of each through hole 8 is circular or polygonal, the shape of each through hole 8 in the embodiment is rectangular, the corresponding cross section of each plug 7 is rectangular, the plugs 7 can be inserted in the through holes 8 in a sealing manner, and the plugs 7 can be utilized to plug the plurality of through holes 8 according to the actual operation condition of a train and the structure of the buffer structure body 1.

The two long inner side walls of the rectangular frame 4 are respectively integrally formed with a long groove body 9, the groove length direction of the long groove body 9 is parallel to the long side edge of the rectangular frame 4, the long groove body 9 is vertically arranged, a side wall of the long groove body, which is far away from the net piece 5, is provided with a plurality of openings 10 penetrating through the inside of the long groove body, a plurality of partition blocks 11 are sequentially integrally formed in the long groove body 9 along the length direction of the long groove body, the plurality of openings 10 and the plurality of partition blocks 11 are sequentially staggered, and the openings 10 are arranged above the partition blocks 11;

the baffle includes a plurality of rectangular plates 6, every baffle includes two rectangular plates 6 in this embodiment, two rectangular plates 6 arrange in proper order along the groove length direction of elongated slot 9, be fixed with four connecting plates 12 on the face of one side of rectangular plate 6, all be fixed with a slide bar 13 on every connecting plate 12, slide bar 13 is arranged on a parallel with the face of rectangular plate 6, slide bar 13 can pass opening 10, four slide bars 13 on same rectangular plate 6 can slide respectively and inlay in two elongated slot 9, slide bar 13 can with spacer 11 butt, after two rectangular plates 6 are installed in place, two rectangular plates 6 can block rectangular recess 2, upper and lower two rectangular plates 6 can support tightly.

Two handles 14 are fixed on one side surface of each baffle far away from the slide bar 13, so that workers can conveniently disassemble and assemble the baffles.

When the upper baffle plate and the lower baffle plate are required to be installed, the baffle plate positioned below is required to be installed firstly, and then the baffle plate positioned above is required to be installed; the worker grabs the handle 14, correspondingly passes the four slide bars 13 on the baffle through the four openings 10, and after the slide bars 13 pass through the openings 10 and enter the long groove body 9, the worker moves the baffle downwards until the slide bars 13 are abutted with the spacer blocks 11, and the two baffle plates after being mounted are abutted up and down;

when two baffles about need dismantle, need to tear open the baffle that is located the top earlier, then tear open the baffle that is located the below again, the workman grasps handle 14, lifts up the baffle, exerts a force to outside rectangular groove 2 for the baffle when lifting up the baffle, when slide bar 13 moves up to opening 10 department, four slide bars 13 can deviate from four openings 10 department to realize the dismantlement of this piece baffle.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides a tunnel buffer structure, includes and links to each other with tunnel lining and arranges buffer structure body (1) outside the tunnel, its characterized in that, offer a plurality of rectangle recesses (2) on the lateral wall of buffer structure body (1), a plurality of rectangle recesses (2) are arranged in proper order along the length direction of buffer structure body (1), pressure release hole (3) with the inside intercommunication of buffer structure body (1) are offered to the tank bottom wall of rectangle recess (2); the sealing assembly is arranged in the rectangular groove (2), the sealing assembly comprises a rectangular frame (4), a net piece (5) and a baffle, the rectangular frame (4) is tightly embedded into the rectangular groove (2), the pressure relief hole (3) is positioned on the inner side of the rectangular frame (4), one end of the rectangular frame (4) is fixed with the net piece (5), the other end of the rectangular frame (4) is detachably fixed with the baffle, and the net piece (5) is arranged between the pressure relief hole (3) and the baffle.

2. A tunnel buffer structure according to claim 1, characterized in that the mesh shape of the mesh sheet (5) is rectangular and the mesh area is smaller than the hole area of the pressure relief holes (3).

3. A tunnel buffer structure according to claim 1, characterized in that the hole areas of the plurality of pressure relief holes (3) decrease in sequence in the direction into the tunnel.

4. The tunnel buffer structure according to claim 1, further comprising a plurality of plugs (7), wherein the pressure relief hole (3) comprises a plurality of through holes (8), and the plugs (7) can be inserted in the through holes (8) in a sealing manner.

5. The tunnel buffer structure according to claim 1, wherein long groove bodies (9) are integrally formed on two long inner side walls of the rectangular frame (4), the groove length direction of the long groove bodies (9) is parallel to the long side edges of the rectangular frame (4), a plurality of through openings (10) are formed in one side wall of the long groove bodies (9) far away from the mesh (5), a plurality of partition blocks (11) are integrally formed in the long groove bodies (9) in sequence along the length direction of the long groove bodies, the plurality of openings (10) and the plurality of partition blocks (11) are sequentially staggered, and the openings (10) are arranged above the partition blocks (11); the baffle comprises a plurality of rectangular plates (6), wherein the rectangular plates (6) are sequentially arranged along the groove length direction of the long groove body (9), a plurality of connecting plates (12) are fixed on one side plate surface of the rectangular plates (6), each connecting plate (12) is fixedly provided with a sliding rod (13), the sliding rods (13) are parallel to the plate surface of the rectangular plates (6), the sliding rods (13) can penetrate through the openings (10), the sliding rods (13) on the same rectangular plate (6) can be respectively and slidably embedded into the two long groove bodies (9), and the sliding rods (13) can be abutted with the spacer blocks (11).

6. A tunnel buffer structure according to claim 5, characterized in that a handle (14) is fixed to a side of the baffle remote from the slide bar (13).