CN212250055U

CN212250055U - Anti-seismic energy dissipation and shock absorption node structure of shield tunnel

Info

Publication number: CN212250055U
Application number: CN202020933860.1U
Authority: CN
Inventors: 索晓庆
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-12-29
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a shield tunnel antidetonation energy dissipation shock attenuation node structure, including two adjacent shield pieces, one-level dead slot and second grade dead slot have been seted up to two corresponding side correspondences of shield piece, and have all welded the spring in two corresponding one-level dead slots, are provided with splint between two shield pieces, and the splint both sides all weld have with spring looks welded connecting plate, the splint both sides welding have the cardboard that offsets with the shield piece. The utility model is provided with a first-level empty groove at one side of two adjacent shield pieces, and fixedly connects a T-shaped seat correspondingly, and utilizes a spring in the first-level empty groove to connect a connecting plate and a clamping plate of an integrated structure, and connects a clamping plate and a telescopic plate which is connected with the T-shaped seat sleeve on the clamping plate; a second-level empty groove is formed in the other side of each two adjacent shield pieces, and a memory steel plate with high deformation recovery capacity is connected between the two corresponding second-level empty wipers, so that elastic connection between the two shield pieces is ensured, and stable shaping support with an anti-seismic buffering effect is provided for the shield tunnel.

Description

Anti-seismic energy dissipation and shock absorption node structure of shield tunnel

Technical Field

The utility model relates to a shield tunnel construction protection technical field especially relates to a shield tunnel antidetonation energy dissipation shock attenuation node structure.

Background

With the synchronous increase of population and resource consumption, the land and space resources which are in shortage are increasingly caused, and the scientific technology with the difference of every day makes the areas with advanced economic development level turn to the development of underground spaces, including mineral resources in deep land and public transportation trend towards spaces, which are all dependent on the development of the shield tunnel development technology. The shield method is a fully mechanical construction method in the construction of the subsurface excavation method, which is a mechanical construction method for pushing a shield machine in the ground, preventing collapse into a tunnel by using a shield shell and duct pieces to support surrounding rocks around, excavating a soil body in front of an excavation surface by using a cutting device, transporting out of the tunnel by using an unearthing machine, pressing and jacking at the rear part by using a jack, and assembling precast concrete duct pieces to form a tunnel structure.

The shield tunnel is stressed and supported by the mechanical mechanism, so that collapse accidents of the tunnel are avoided, the tunnel is ensured to be wholly smooth, personnel and objects can conveniently pass through the tunnel, and the shield tunnel is an important technical aspect of tunnel development. It should be noted that the tunnel in the underground deep layer is very easily influenced by many external factors, especially the external force action leads to the self-stress of the tunnel structure very easily, under the conventional technology, with the help of single concrete structure in order to show the drawback that is increasingly serious, especially in the aspect of earthquake resistance, the fixed connection mode makes the tunnel structure lack sufficient cushioning effect, and in the stress action accumulated in the day and the month, the section of jurisdiction in the tunnel is very easily broken up and separated, thereby the whole structural integrity of the tunnel is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that is difficult to provide safe bearing structure for the tunnel among the prior art, and the shield tunnel antidetonation energy dissipation shock attenuation node structure that provides.

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

the utility model provides a shield tunnel antidetonation energy dissipation shock attenuation node structure, includes two adjacent shield pieces, two one-level dead slot and second grade dead slot have been seted up in the corresponding side correspondence of shield piece, and all have welded the spring in two corresponding one-level dead slots, two be provided with splint between the shield piece, and the splint both sides all weld have with spring looks welded connecting plate, the welding of splint both sides has the cardboard that offsets with the shield piece, and the welding has the expansion plate, two on the cardboard bolted connection has the slip cap to establish the T type seat of expansion plate on the shield piece, and fixedly connected with memory steel sheet between two corresponding second grade dead slots.

Preferably, the first-stage empty groove is formed in two corresponding sides of the two shield pieces, and the two second-stage empty grooves are formed in the other two corresponding sides of the two shield pieces.

Preferably, the connecting plate corresponds to the first-stage empty groove, and one end of the connecting plate welded with the spring is slidably sleeved in the first-stage empty groove.

Preferably, the telescopic plate is located above the two connecting plates, and the two T-shaped seats are located on two sides of the shield piece, which are provided with the first-stage empty groove, respectively.

Preferably, one end of the expansion plate, which is far away from the clamping plate, is slidably sleeved in the T-shaped seat.

Preferably, the two ends of the memory steel plate are respectively sleeved in the two corresponding second-stage empty grooves through bolts.

Compared with the prior art, the utility model discloses possess following advantage:

1. the utility model discloses set up the one-level dead slot in two adjacent shield pieces one side, utilize the connecting plate and the splint of the spring coupling body structure that are located the one-level dead slot, connect the cardboard of being connected with shield piece counterbalance through splint to connect the expansion plate on the cardboard, establish the T type seat of expansion plate through connecting the cover on the shield piece, in order to ensure to have the antidetonation support of enough cushioning effect between two adjacent shield pieces.

2. The utility model discloses set up the second grade dead slot that corresponds at two adjacent shield pieces opposite sides to utilize the bolt to adorn the memory steel sheet in the second grade dead slot that two correspond, extrude each other when two shield pieces atress, so that the memory steel sheet carries out synchronous deformation, provide the buffering support that has the recovery effect for two adjacent shield pieces, thereby play the antidetonation effect.

To sum up, the utility model is provided with a first-level empty groove at one side of two adjacent shield pieces, and fixedly connected with a T-shaped seat correspondingly, and a spring in the first-level empty groove is utilized to connect a connecting plate and a clamping plate of an integrated structure, and a clamping plate and a telescopic plate sleeved and connected with the T-shaped seat are connected on the clamping plate; a second-level empty groove is formed in the other side of each two adjacent shield pieces, and a memory steel plate with high deformation recovery capacity is connected between the two corresponding second-level empty wipers, so that elastic connection between the two shield pieces is ensured, and stable shaping support with an anti-seismic buffering effect is provided for the shield tunnel.

Drawings

Fig. 1 is a schematic structural view of an anti-seismic energy-dissipation shock-absorption node structure of a shield tunnel provided by the utility model;

fig. 2 is a schematic view of a shield piece structure of a shock-absorbing energy-dissipating node structure of a shield tunnel according to the present invention;

fig. 3 is the utility model provides a shield tunnel antidetonation energy dissipation shock attenuation node structure's splint, connecting plate, cardboard and expansion plate connection structure schematic diagram.

In the figure: 1 shield piece, 2 first-level dead slots, 3 second-level dead slots, 4 springs, 5 clamping plates, 6 connecting plates, 7 clamping plates, 8 expansion plates, 9T-shaped seats and 10 memory steel plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a shock-absorbing, energy-dissipating and shock-absorbing node structure of a shield tunnel comprises two adjacent shield segments 1, it is noted that each shield segment 1 can be connected by 1-4 shield segments 1 to facilitate laying in the shield tunnel, corresponding side edges of the two shield segments 1 are correspondingly provided with a first-level empty groove 2 and a second-level empty groove 3, specifically referring to fig. 1 and fig. 3 for description, and springs 4 are welded in the two corresponding first-level empty grooves 2, a clamping plate 5 is arranged between the two shield segments 1, connecting plates 6 welded with the springs 4 are welded on two sides of the clamping plate 5, clamping plates 7 abutting against the shield segments 1 are welded on two sides of the clamping plate 5, the clamping plates 7 are in a second-level ladder structure to facilitate movably abutting against the side edges of the shield segments 1, telescopic plates 8 are welded on the clamping plates 7, T-shaped seats 9 sleeved with the telescopic plates 8 are bolted on the two shield segments 1, it should be noted that, one end of the T-shaped seat 9, which is sleeved with the expansion plate 8, is an open-ended hollow structure, and the open end of the T-shaped seat 9 is filled with compressible gas or liquid, under the action of the expansion plate 8, the gas or liquid can flow or expand in a telescopic manner, and a memory steel plate 10 is fixedly connected between two corresponding secondary cavities 3, and it is worth noting that the memory steel plate 10 has extremely high strength and toughness, and when the shield piece 1 is stressed, the memory steel plate 10 is extruded, so that the memory steel plate 10 deforms, and under the recovery action of the memory steel plate, the memory steel plate 1 provides a buffer support.

Referring to the accompanying drawing 2, the first-level hollow grooves 2 are formed on two corresponding sides of the two shield pieces 1, and the second-level hollow grooves 3 are formed on the other two corresponding sides of the two shield pieces 1, so as to connect the adjacent shield pieces 1 in the transverse direction and the longitudinal direction, respectively, to form an integral structure in which the shield pieces 1 are distributed.

The connecting plate 6 corresponds to the first-stage empty groove 2, one end of the connecting plate 6 welded with the spring 4 is slidably sleeved in the first-stage empty groove 2, and the connecting plate 6 can move telescopically between the two shield pieces 1, namely the two corresponding first-stage empty grooves 2, under the elastic supporting action of the spring 4.

The expansion plate 8 is located above the two connection plates 6, and with reference to the accompanying drawing 3, the two T-shaped seats 9 are respectively located on two sides of the shield piece 1, where the first-level empty groove 2 is formed, so that the expansion plate 8 can be matched with the shield piece 1 according to the actual size of the shield piece 1.

One end of the expansion plate 8, which is far away from the clamping plate 5, is slidably sleeved in the T-shaped seat 9 so as to fix the clamping plate 5 outside the shield piece 1.

Two ends of the memory steel plate 10 are respectively sleeved in the two corresponding secondary empty grooves 3 through bolts, and the memory steel plate 10 deforms when stressed and recovers to the initial shape in a short period of time so as to provide elastic support for the two adjacent shield pieces 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a shield tunnel antidetonation energy dissipation shock attenuation node structure, includes two adjacent shield pieces (1), its characterized in that, two one-level dead slot (2) and second grade dead slot (3) have been seted up in the corresponding side correspondence of shield piece (1), and all welded in two corresponding one-level dead slots (2) have spring (4), two be provided with splint (5) between shield piece (1), and splint (5) both sides all weld have with spring (4) welded connecting plate (6), splint (5) both sides welding have cardboard (7) that offsets with shield piece (1), and the welding has expansion plate (8) on cardboard (7), two bolted connection has T type seat (9) that the expansion plate (8) were established to the slip cap on shield piece (1), and fixedly connected with memory steel sheet (10) between two corresponding second grade dead slots (3).

2. The shock-resistant, energy-dissipating and shock-absorbing node structure of the shield tunnel according to claim 1, wherein the primary empty groove (2) is opened at two corresponding sides of the two shield pieces (1), and the two secondary empty grooves (3) are opened at the other two corresponding sides of the two shield pieces (1).

3. The shock-resistant, energy-dissipating and shock-absorbing node structure of the shield tunnel according to claim 2, wherein the connecting plate (6) corresponds to the primary empty groove (2), and one end of the connecting plate (6) welded to the spring (4) is slidably sleeved in the primary empty groove (2).

4. An anti-seismic energy-dissipation shock-absorption node structure of a shield tunnel according to claim 3, wherein the expansion plate (8) is located above the two connecting plates (6), and the two T-shaped seats (9) are respectively located on two sides of the shield piece (1) where the primary empty groove (2) is formed.

5. An anti-seismic, energy-dissipation and shock-absorption node structure of a shield tunnel according to claim 4, wherein one end of the expansion plate (8) far away from the clamping plate (5) is slidably sleeved in the T-shaped seat (9).

6. The shock-resistant, energy-dissipating and shock-absorbing node structure of the shield tunnel according to claim 2, wherein two ends of the memory steel plate (10) are respectively sleeved in two corresponding secondary empty grooves (3) through bolts.