CN220118144U

CN220118144U - Large-section tunnel supporting structure

Info

Publication number: CN220118144U
Application number: CN202321603186.0U
Authority: CN
Inventors: 胡蕤林; 陈想军; 邓军; 王梅英
Original assignee: Wuhan Institute Of Comprehensive Transportation Co ltd
Current assignee: Wuhan Institute Of Comprehensive Transportation Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-12-01
Anticipated expiration: 2033-06-25

Abstract

The utility model discloses a large-section tunnel supporting structure which comprises a bottom supporting transverse block, wherein square grooves are formed in two sides of the bottom supporting transverse block, supporting arc rods are arranged at the upper ends of the square grooves, square blocks are arranged outside two ends of the lower side of each supporting arc rod, a plurality of radial screws are arranged at equal intervals on the inner cambered surface of a main body structure of each supporting arc rod, a plurality of sleeves are arranged on the side straight surface of each supporting arc rod, a supporting rod is arranged in an inner cavity of each sleeve, a plurality of concave parts are formed in the top surface of each supporting arc rod, slotted holes are formed in the end faces of the concave parts, damping shock absorbers are arranged at the bottoms of the inner grooves of the slotted holes, buffer rubber plates are arranged at the bottoms of the cambered surfaces of the supporting arc rods in a contact mode, and a plurality of fixing blocks and extension connecting plates are arranged at the side ends of the buffer rubber plates. When the utility model is impacted, the connected damping shock absorber can play a certain role in buffering, thereby ensuring the buffering effect of the connecting part on the buffering rubber plate and improving the stability of the support.

Description

Large-section tunnel supporting structure

Technical Field

The utility model relates to the technical field of tunnel support, in particular to a large-section tunnel support structure.

Background

A tunnel is an engineering building buried in an underground space, which is a form of human use, and its structure includes a main building and auxiliary equipment. The main building consists of a tunnel body and a tunnel door, and auxiliary equipment comprises a car shelter, a fire-fighting facility, an emergency communication and water-proof facility, and a long tunnel is provided with special ventilation and illumination equipment.

When the excavation section is larger in tunnel engineering, the tunnel is called as a large section, in construction engineering, the excavation stress of the large-section tunnel is relatively unfavorable, the construction difficulty is also greatly increased due to the increase of the excavation section area, and particularly, very high requirements are put forward on the primary support technology under the general geological condition and the support technology under the poor geological condition, so that the tunnel support construction structure is particularly concerned under the condition of the large section, and the tunnel support structure applied at present is a rigid support structure, so that the tunnel support structure is very easy to damage under the action of repeated heavy pressure or impact force, and the like, thereby leading to poor stability of the support.

Disclosure of Invention

The utility model aims to provide a large-section tunnel supporting structure so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a big section tunnel supporting construction, includes the horizontal piece of bottom stay, the both sides of the horizontal piece of bottom stay are provided with the square groove, the upper end of square groove is provided with the support arc pole, the downside both ends outside of support arc pole is provided with the square, the main part structure intrados equidistant a plurality of openings that are provided with of support arc pole, the inside activity of opening is provided with radial screw rod, the side straight face of support arc pole is provided with a plurality of sleeve pipes, sheathed tube inner chamber is provided with the bracing piece, the top surface of support arc pole is provided with a plurality of concave parts, and the concave part terminal surface is provided with the slotted hole, the inside groove bottom of slotted hole is provided with damping bumper shock absorber, the cambered surface bottom contact of support arc pole is provided with the buffering offset plate, the side end of buffering offset plate is provided with a plurality of fixed blocks, every the side straight face of fixed block is provided with the extension connecting plate, the terminal surface of extension connecting plate is provided with the screw.

Preferably, the bottom support transverse block and the support arc rod are all provided with a plurality of, a plurality of the bottom support transverse block and a plurality of the support arc rod are adjacently arranged on the same horizontal plane.

Preferably, bolt connecting grooves which are connected up and down are arranged in the center of the bottom surface of the inner groove of the square groove and the center of the end surface of the square block.

Preferably, the support rod is arranged in the sleeve cavity in a damping sliding manner.

Preferably, the screw hole of the end face of the extension connecting plate is fixedly connected with the top face of the damping shock absorber through a bolt.

Preferably, the extension connecting plate is matched with the concave part arranged on the top surface of the supporting arc rod.

Preferably, two radial screws correspond to one damping shock absorber, one fixed block and one extension connecting plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. the bottom support transverse blocks and the support arc rods of the plurality of single structures are arranged, and the buffer rubber plates are arranged at the lower parts of the inner cambered surfaces of the support arc rods which are adjacently arranged, so that the effect of preventing falling rocks from falling is achieved;

2. the utility model also provides the sleeve and the support rod, on one hand, the assembly of the adjacent support arc rods is carried out through the two phase end surfaces of the sleeve and the support rod, and on the other hand, the distance adjustment of the adjacent support arc rods is realized through the relative length adjustment of the sleeve and the support rod, so that the operation is convenient.

Drawings

FIG. 1 is a perspective view of the whole main structure of the present utility model;

FIG. 2 is a perspective view of the first perspective view of the overall explosion of the present utility model;

FIG. 3 is a perspective view of the second perspective view of the overall explosion of the present utility model;

fig. 4 is an enlarged view of the structure of fig. 3 a according to the present utility model.

In the figure: 1. a bottom support cross block; 2. a square groove; 3. supporting the arc rod; 4. a square block; 5. a radial screw; 6. a sleeve; 7. a support rod; 8. a slot hole; 9. damping shock absorber; 10. a buffer rubber plate; 11. a fixed block; 12. and (5) prolonging the connecting plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a large-section tunnel supporting structure, including the bottom support horizontal piece 1, the both sides fluting of bottom support horizontal piece 1 is equipped with square groove 2, the upper end installation of square groove 2 is strutted arc pole 3, the outside welding square 4 in downside both ends of strutted arc pole 3, a plurality of openings are offered to the main part structure intrados of strutted arc pole 3 equidistant, radial screw 5 is installed to the mode that adopts the screw thread to rotate inside the opening, accomplish the fixed connection of strutted arc pole 3 at the tunnel top surface through radial screw 5, the side straight-face screw demountable installation of strutted arc pole 3 is a plurality of sleeve pipes 6, the inner chamber slidable mounting bracing piece 7 of sleeve pipe 6, the end of bracing piece 7 adopts the screw demountable connection to connect the strutted arc pole 3 of adjacent installation equally, a plurality of concave parts are offered to the top surface of strutted arc pole 3, the slotted hole 8 is left in concave part terminal surface fluting, the inside groove screw fixed mounting damping bumper pad 9 of slotted hole 8, cambered surface bottom contact installation buffering offset plate 10 of strutted arc pole 3, the side end welding a plurality of fixed blocks 11 of each fixed block 11, the outside welding extension connecting plate 12 of side straight-face of each connecting plate 12, the upper and lower extension connecting plate is offered.

The number of the bottom support transverse blocks 1 and the number of the support arc rods 3 are multiple, and the bottom support transverse blocks 1 and the support arc rods 3 are detachably connected in the same horizontal plane by adopting screws; the center of the bottom surface of the inner groove of the square groove 2 and the center of the end surface of the square 4 are provided with bolt connecting grooves which are connected up and down, and bolts are used for completing the fixed installation of the bottom support transverse block 1 and the support arc rod 3 in the tunnel; the supporting rod 7 is connected in a damping sliding way in the inner cavity of the sleeve 6, and the integral length adjustment of the combination of the supporting rod 7 and the sleeve 6 can be realized in a damping limiting mode; screw holes on the end face of the extension connecting plate 12 are fixedly connected with the top surface of the damping shock absorber 9 through bolts; the extension connecting plate 12 is connected with a concave part arranged on the top surface of the supporting arc rod 3 in a matched manner; two radial screws 5 correspond to a damping shock absorber 9, a fixed block 11 and an extension connection plate 12.

Working principle: when the utility model is used, firstly, through the construction requirement of a large section of a tunnel, a corresponding number of bottom support transverse blocks 1 and support arc rods 3 are selected, corresponding sleeve 6 and support rod 7 integral components are installed on the side straight surfaces of the support arc rods 3 by using screws, and the connection surfaces at the tail ends of the support rods 7 are installed by using screws, so that the assembly of a support structure with a certain length is completed, then, a buffer rubber plate 10 with a corresponding specification is taken out, the top surfaces of the damping rubber plates 9 are fixedly connected through the fixing blocks 11 and the extension connecting plates 12, the buffer rubber plates 10 are arranged at the lower parts of the inner cambered surfaces of the support arc rods 3 which are adjacently installed, the effect of preventing falling stones is achieved, and when the shock is applied, the connected damping rubber plates 9 can play a certain role of buffering, the buffering effect of the connection parts on the buffer rubber plates 10 is ensured, and the utility model has the advantages of simplicity in operation, convenience in use and good use effect.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a large section tunnel supporting construction, includes bottom stay transverse block (1), its characterized in that: the utility model discloses a support arc rod, including horizontal piece (1) of end support, bottom support, square groove (2) are provided with both sides, the upper end of square groove (2) is provided with support arc rod (3), the downside both ends outside of support arc rod (3) are provided with square (4), the main part structure intrados equidistant a plurality of openings that are provided with of support arc rod (3), the inside activity of opening is provided with radial screw (5), the side straight face of support arc rod (3) is provided with a plurality of sleeve pipes (6), the inner chamber of sleeve pipe (6) is provided with bracing piece (7), the top surface of support arc rod (3) is provided with a plurality of concave parts, and the concave part terminal surface is provided with slotted hole (8), the inside groove bottom of slotted hole (8) is provided with damping bumper pad (9), the cambered surface bottom contact of support arc rod (3) is provided with cushion rubber plate (10), the side end of cushion rubber plate (10) is provided with a plurality of fixed blocks (11), every the side straight face of fixed block (11) is provided with extension connecting plate (12), extension connecting plate (12) are provided with.

2. The large-section tunnel supporting structure according to claim 1, wherein: the bottom support transverse block (1) and the support arc rods (3) are all arranged in a plurality, and the bottom support transverse block (1) and the support arc rods (3) are adjacently arranged on the same horizontal plane.

3. The large-section tunnel supporting structure according to claim 1, wherein: the center of the bottom surface of the inner groove of the square groove (2) and the center of the end surface of the square block (4) are provided with bolt connecting grooves which are connected up and down.

4. The large-section tunnel supporting structure according to claim 1, wherein: the supporting rod (7) is arranged in the inner cavity of the sleeve (6) in a damping sliding manner.

5. The large-section tunnel supporting structure according to claim 1, wherein: screw holes on the end face of the extension connecting plate (12) are fixedly connected with the top face of the damping shock absorber (9) through bolts.

6. The large-section tunnel supporting structure according to claim 1, wherein: the extension connecting plate (12) is matched with a concave part arranged on the top surface of the supporting arc rod (3).

7. The large-section tunnel supporting structure according to claim 1, wherein: two radial screws (5) correspond to one damping shock absorber (9), one fixed block (11) and one extension connecting plate (12).