Fully-prefabricated three-layer shield tunnel

Abstract

The utility model discloses a full-prefabricated three-layer shield tunnel, which relates to the technical field of shield tunnels, and comprises a tunnel, a prefabricated mechanism is arranged in the tunnel and is used for realizing the rapid construction of the shield tunnel, and the prefabricated mechanism comprises a mounting unit, an upper top plate and a lower lane plate, a plurality of fixed wall bodies are fixedly mounted at the bottom of the upper top plate through connecting seats; the layering unit is provided with the mounting unit, the upper-layer duct piece, the lower-layer duct piece and the middle-layer duct piece are fixed in the tunnel through bolts, the upper-layer duct piece and the lower-layer duct piece fix upper top plates and lower lane plates through upper fixing bases and lower fixing bases correspondingly, and a fixing wall is fixedly mounted between the upper top plates through connecting bases; the two supporting seats are fixedly installed on the side face of the fixed wall body through bolts, the first lane plate and the second lane plate are installed above the two supporting seats through bolts correspondingly, all parts are prefabricated parts, and therefore the shield tunnel can be rapidly built, and the construction period is shortened.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel technology, specifically a fully prefabricated three-layer shield tunnel. Background Technology

[0002] With the rapid expansion of urban population and traffic volume, the pressure on urban transportation is also increasing. In recent years, tunnel construction has gradually increased. For shield tunnels, most single-tube shield tunnels at home and abroad are currently single-layer tunnels. However, the construction of double-layer shield tunnels has also been increasing in recent years, resulting in a number of double-layer tunnels.

[0003] According to the patent titled "A Single-Pipe Three-Layer Shield Tunnel" (Patent Publication No.: CN205243520U, Patent Publication Date: 2016-05-18), the shield tunnel is divided into three lanes from top to bottom by two layers of lane slabs. The upper layer is a dedicated lane for small vehicles, the middle layer is a subway lane, and the lower layer is a highway lane. The dedicated lane for small vehicles is a closed lane formed by the side partitions and the top wall on the upper lane slab. The subway lane is a closed lane formed by the side partitions between the two lane slabs. The highway lane is a closed lane formed by the lower lane slab, the side partitions, and the bottom slab. An evacuation passage is formed between the side partition of each of the three lanes and the inner wall of the shield tunnel. This invention proposes a single-tube three-layer shield tunnel that connects highway and rail transit systems, aiming to make full use of the tunnel's internal space and combine different functional operation modes to significantly increase traffic capacity.

[0004] Based on the aforementioned existing technologies, current fully prefabricated three-layer shield tunnels still have the following problems. Shield tunneling is currently the main method for excavating and constructing tunnels for subways, high-speed railways, and other projects. In traditional shield tunnel construction methods, tunnel lining is mostly done on-site by pouring cement, but this method has a long construction period. Therefore, this utility model provides a fully prefabricated three-layer shield tunnel. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fully prefabricated three-layer shield tunnel, solving the following problems that still exist in existing fully prefabricated three-layer shield tunnels. Shield tunneling is currently the main method for excavating and constructing tunnels for subways, high-speed railways, and other projects. In traditional shield tunnel construction methods, tunnel lining is mostly done on-site by pouring cement, but this method has a long construction period.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fully prefabricated three-layer shield tunnel, comprising a tunnel, wherein a prefabrication mechanism is installed inside the tunnel to enable rapid construction of the shield tunnel, the prefabrication mechanism comprising:

[0007] The installation unit is set inside the tunnel and includes an upper roof plate and a lower lane plate. Several fixed walls are fixedly installed at the bottom of the upper roof plate through connecting seats. Two support seats are fixedly installed on the inner side of the fixed walls through bolts, so as to realize the rapid construction of shield tunnels.

[0008] Layered units are located inside the installation unit and are used to achieve internal layering within the tunnel.

[0009] Preferably, the installation unit further includes an upper segment, a lower segment, and a middle segment that are fixedly installed inside the tunnel by bolts. The bottom of the upper segment is fixedly installed to an upper fixing seat by bolts. A lower fixing seat is fixedly installed above the lower segment by bolts. The lower fixing seat is fixedly installed to the lower lane plate by bolts.

[0010] Preferably, a sealing wall is fixed to the outside of the fixed wall by bolts to seal the gaps between the fixed walls.

[0011] Preferably, a first lane plate and a second lane plate are fixedly installed on the top of the support base by bolts, so that the tunnel interior is divided into three layers.

[0012] Preferably, the layered unit includes a set of upper slots at the bottom of the upper slot, a set of first middle slots at the top and bottom of the first lane plate, a set of second middle slots at the top and bottom of the second lane plate, and a set of lower slots at the top of the lower lane plate.

[0013] Preferably, the upper top plate, the first lane plate, the first lane plate and the second lane plate, and the second lane plate and the lower lane plate are respectively fitted with a left partition wall and a right partition wall through an upper slot and a first middle slot, a first middle slot and a second middle slot, and a second middle slot and a lower slot. A ventilation slot is provided above the left partition wall, and an emergency door opening is provided on the lower rear side of the left partition wall.

[0014] This invention provides a fully prefabricated three-layer shield tunnel. Compared with the prior art, it has the following advantages:

[0015] 1. This fully prefabricated three-layer shield tunnel is equipped with installation units. The upper, lower, and middle tunnel segments are bolted to the inside of the tunnel. The upper and lower tunnel segments are fixed to the upper roof slab and lower lane slab respectively by upper and lower fixing seats. The upper roof slabs are fixed to the wall through connecting seats. Two support seats are bolted to the side of the fixed wall. The first lane slab and the second lane slab are bolted to the top of the two support seats respectively. All parts are prefabricated, thus enabling rapid construction of the shield tunnel and reducing the construction period.

[0016] 2. This fully prefabricated three-layer shield tunnel is equipped with layered units. Left and right partition walls are installed between the top slab and the first lane slab, between the first lane slab and the second lane slab, and between the second lane slab and the lower lane slab. Emergency passages are formed between the left and right partition walls and the sealing wall. In case of emergencies such as fire or traffic accidents, people can quickly evacuate through the emergency pedestrian passages to avoid secondary injuries such as congestion and trampling. Attached Figure Description

[0017] Figure 1 This is a right-side perspective view of the structure of this utility model;

[0018] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the installation unit of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the layered unit of this utility model.

[0021] In the diagram: 1-Tunnel, 2-Prefabrication mechanism, 21-Installation unit, 211-Upper segment, 212-Lower segment, 213-Middle segment, 214-Upper fixing seat, 215-Upper top plate, 216-Connecting seat, 217-Support seat, 218-Lower fixing seat, 219-Lower lane plate, 2110-Fixed wall, 2111-Sealing wall, 22-Layer unit, 221-Upper slot, 222-First middle slot, 223-Second middle slot, 224-Lower slot, 225-Left partition wall, 226-Ventilation slot, 227-Emergency doorway, 228-Right partition wall, 229-First lane plate, 2210-Second lane plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] A fully prefabricated three-layer shield tunnel includes a tunnel 1, and a prefabrication mechanism 2 is installed inside the tunnel 1 to enable rapid construction of the shield tunnel. The prefabrication mechanism 2 includes:

[0025] The installation unit 21 is set inside the tunnel 1 and includes an upper top plate 215 and a lower lane plate 219. Several fixed walls 2110 are fixedly installed at the bottom of the upper top plate 215 through connecting seats 216. Two support seats 217 are fixedly installed on the inner side of the fixed walls 2110 through bolts, so as to realize the rapid construction of shield tunnels.

[0026] Layered unit 22 is disposed inside the mounting unit 21 and is used to realize the layering inside the tunnel.

[0027] In this embodiment, the installation unit 21 also includes an upper tube segment 211, a lower tube segment 212 and a middle tube segment 213 that are fixedly installed inside the tunnel 1 by bolts. The bottom of the upper tube segment 211 is fixedly installed to the upper fixing seat 214 by bolts. The lower fixing seat 218 is fixedly installed above the lower tube segment 212 by bolts. The upper part of the lower fixing seat 218 is fixedly installed to the lower lane plate 219 by bolts.

[0028] The upper tunnel segment 211, lower tunnel segment 212, and middle tunnel segment 213 are fixed inside the tunnel 1 by bolts. The upper tunnel segment 211 and lower tunnel segment 212 are fixed to the upper top plate 215 and the lower lane plate 219 by the upper fixing seat 214 and the lower fixing seat 218, respectively. The upper top plate 215 is fixedly installed with the fixed wall 2110 by the connecting seat 216. Two support seats 217 are fixedly installed on the side of the fixed wall 2110 by bolts. The first lane plate 229 and the second lane plate 2210 are respectively installed on the top of the two support seats 217 by bolts. All parts are prefabricated, thereby realizing the rapid construction of shield tunnel and reducing the construction period.

[0029] In this embodiment, a sealing wall 2111 is fixedly installed on the outside of the fixed wall 2110 by bolts to seal the gaps between the fixed walls 2110.

[0030] The sealing wall 2111 is fixed to the outside of the fixed wall 2110 by bolts, thereby sealing the gap between the fixed walls 2110.

[0031] In this embodiment, the first lane plate 229 and the second lane plate 2210 are fixedly installed on the top of the support base 217 by bolts, so that the tunnel is divided into three layers.

[0032] The tunnel interior is divided into three layers by bolts fixing the first lane plate 229 and the second lane plate 2210 to the top of the support base 217.

[0033] In this embodiment, the layered unit 22 includes a set of upper slots 221 at the bottom of the upper slot 221, a set of first middle slots 222 at the top and bottom of the first lane plate 229, a set of second middle slots 223 at the top and bottom of the second lane plate 2210, and a set of lower slots 224 at the top of the lower lane plate 219. The upper top plate 215, the first lane plate 229, the first lane plate 229 and the second lane plate 2210, and the second lane plate 2210 and the lower lane plate 219 are respectively connected by the upper slots 221 and the first middle slots 222, the first middle slots 222 and the second middle slots 223, and the second middle slots 223 and the lower slots 224 to fit the left partition wall 225 and the right partition wall 228. A ventilation slot 226 is provided above the left partition wall 225, and an emergency doorway 227 is provided below the rear side of the left partition wall 225.

[0034] Left partition wall 225 and right partition wall 228 are installed between the top plate 215 and the first lane plate 229, between the first lane plate 229 and the second lane plate 2210, and between the second lane plate 2210 and the lower lane plate 219. An emergency passage is formed between the left partition wall 225, the right partition wall 228 and the sealing wall 2111. In case of an emergency, such as a fire or a traffic accident, people can quickly evacuate through the emergency pedestrian passage to avoid secondary injuries such as congestion and trampling.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] During operation, firstly, the upper segment 211, lower segment 212, and middle segment 213 are fixed inside tunnel 1 with bolts. The upper segment 211 and lower segment 212 are fixed to the upper roof plate 215 and lower lane plate 219 respectively through the upper fixing seat 214 and the lower fixing seat 218. The upper roof plate 215 is fixedly installed with the connecting seat 216. Two support seats 217 are fixedly installed on the side of the fixed wall 2110 with bolts. The first lane plate 229 and the second lane plate 2210 are respectively installed on the top of the two support seats 217 with bolts. Then, the left partition wall 225 and the right partition wall 228 are inserted and installed between the upper roof plate 215 and the first lane plate 229, between the first lane plate 229 and the second lane plate 2210, and between the second lane plate 2210 and the lower lane plate 219. An emergency passage is formed between the left partition wall 225, the right partition wall 228 and the sealing wall 2111.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully prefabricated three-layer shield tunnel, comprising a tunnel (1), characterized in that: The tunnel (1) is equipped with a prefabrication mechanism (2) for rapid construction of the shield tunnel. The prefabrication mechanism (2) includes: The installation unit (21) is set inside the tunnel (1) and includes an upper top plate (215) and a lower lane plate (219). Several fixed walls (2110) are fixedly installed at the bottom of the upper top plate (215) through connecting seats (216). Two support seats (217) are fixedly installed on the inner side of the fixed walls (2110) through bolts, so as to realize the rapid construction of shield tunnels. The layered unit (22) is located inside the installation unit (21) and is used to achieve layering inside the tunnel.

2. The fully prefabricated three-layer shield tunnel according to claim 1, characterized in that: The installation unit (21) also includes an upper tube segment (211), a lower tube segment (212) and a middle tube segment (213) that are fixedly installed inside the tunnel (1) by bolts. The bottom of the upper tube segment (211) is fixedly installed to the upper fixing seat (214) by bolts. The lower fixing seat (218) is fixedly installed above the lower tube segment (212) by bolts. The upper part of the lower fixing seat (218) is fixedly installed to the lower lane plate (219) by bolts.

3. A fully prefabricated three-layer shield tunnel according to claim 1, characterized in that: A sealing wall (2111) is fixedly installed on the outside of the fixed wall (2110) by bolts, thereby sealing the gap between the fixed walls (2110).

4. A fully prefabricated three-layer shield tunnel according to claim 1, characterized in that: The first lane plate (229) and the second lane plate (2210) are fixedly installed on the top of the support base (217) by bolts, so that the tunnel is divided into three layers.

5. A fully prefabricated three-layer shield tunnel according to claim 4, characterized in that: The layered unit (22) includes a set of upper slots (221) at the bottom of the upper slot (221), a set of first middle slots (222) at the top and bottom of the first lane plate (229), a set of second middle slots (223) at the top and bottom of the second lane plate (2210), and a set of lower slots (224) at the top of the lower lane plate (219).

6. A fully prefabricated three-layer shield tunnel according to claim 5, characterized in that: The upper top plate (215), the first lane plate (229), the first lane plate (229) and the second lane plate (2210), and the second lane plate (2210) and the lower lane plate (219) are respectively connected by the upper slot (221) and the first middle slot (222), the first middle slot (222) and the second middle slot (223), and the second middle slot (223) and the lower slot (224) to fit the left partition wall (225) and the right partition wall (228). A ventilation slot (226) is provided above the left partition wall (225), and an emergency doorway (227) is provided on the rear side below the left partition wall (225).

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