Fabricated arched tunnel structure for super-large-section highway

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a super-large section road assembly type arched tunnel structure which comprises an arched beam, wedge grooves are symmetrically formed in the front surface of the arched beam, an arc-shaped cavity is formed in the arched beam, arc-shaped holes are symmetrically formed in the rear surface of the arched beam, and wedge blocks are slidably installed in the two arc-shaped holes. A cavity is formed in the arched beam, arc-shaped guide rails are symmetrically and fixedly installed in the cavity, the arc-shaped guide rails are sleeved with moving blocks in a sliding mode, check blocks are fixedly installed at one ends of the arc-shaped guide rails, arc-shaped spring rods are fixedly installed on the moving blocks, a pulling assembly is arranged on the arched beam, and a transmission assembly is arranged on the moving blocks. According to the utility model, through the mutual cooperation of the pulling assembly, the transmission assembly, the moving block, the arc-shaped guide rail and the stop block, the wedge block can be accommodated in the arc-shaped hole, and then the wedge block is inserted into the wedge groove, so that the assembly and disassembly of the arched girder in the vertical direction can be realized, and the assembly mode is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to an assembled arched tunnel structure for a super-large-section highway. Background Art

[0002] Tunnels are a convenient and efficient structural form. They are developing at an increasingly faster speed, with an increasing number of them being built. Their scale has also gradually developed from single-hole, two-lane tunnels to double-hole, four-lane, six-lane, and eight-lane tunnels. Among them, in order to meet the current needs of increasing traffic volume, two-way eight-lane and above tunnels with large cross-sections and many lanes are often used in municipal engineering. Against the background of rapid urbanization, the cast-in-place method has been gradually replaced by prefabricated tunnels due to factors such as long construction period and greater impact on existing traffic. Prefabricated tunnels have the advantages of convenient tunnel construction, economic and efficient, short period, quality assurance, and strong lining adaptability.

[0003] When assembling a prefabricated tunnel, it is mainly assembled on site by multiple prefabricated arch beams. In order to make the assembly between each two arch beams more secure, a wedge groove is usually opened on one side of the arch beam, and the other is fixedly installed on a wedge block. During assembly, the wedge block on the arch beam is inserted into the wedge groove on the other arch beam. However, during the assembly process of this method, the two arch beams can only be assembled horizontally, and vertical assembly is not possible. If the arch beam in the middle section of the tunnel is broken, the broken arch beam cannot be directly removed from the middle section and reassembled. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: if the arch beam in the middle section of the tunnel is broken, it is impossible to directly remove the broken arch beam from the middle section and reassemble it, and to propose an ultra-large section highway assembled arch tunnel structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An ultra-large cross-section highway assembled arch tunnel structure, comprising an arch beam, wherein the front surface of the arch beam is symmetrically provided with wedge grooves, the interior of the arch beam is provided with an arc-shaped cavity, the rear surface of the arch beam is symmetrically provided with arc-shaped holes both connected to the cavity, and wedge blocks are slidably installed in the two arc-shaped holes via telescopic spring rods;

[0007] An arc-shaped guide rail is symmetrically fixedly installed in the cavity, a moving block is slidably sleeved on the arc-shaped guide rail, a stopper is fixedly installed on one end of the arc-shaped guide rail, an arc-shaped spring rod is fixedly installed on the moving block, and one end of the arc-shaped spring rod away from the moving block is fixedly connected to the stopper, a pulling assembly for driving the moving block to move is provided on the arch beam, and a transmission assembly for driving the wedge block to move into the arc-shaped hole is provided on the moving block.

[0008] Preferably, rectangular holes that are all connected to the cavity are symmetrically opened on the upper surface of the arch beam, and the pulling assembly includes a hanger plate inserted in the rectangular hole, a mounting block fixedly installed on the hanger plate, and a steel cable fixedly installed on the mounting block, one end of the steel cable away from the mounting block is fixedly connected to the moving block, and a hanging hole is opened on the surface of the hanger plate.

[0009] Preferably, a guide groove is provided on the stopper, and the steel cable is slidably inserted in the guide groove.

[0010] Preferably, the transmission assembly comprises a U-shaped frame fixedly mounted on the wedge block and a trapezoidal block fixedly mounted on the moving block, and the inclined end of the trapezoidal block faces the U-shaped frame.

[0011] Preferably, a connecting seat is fixedly mounted on the upper surface of the arch beam, and a plurality of connecting holes are formed on the connecting seat.

[0012] Preferably, a plurality of positioning grooves are provided at both ends of the arch beam, an inverted arch is provided below the arch beam, a plurality of positioning rods are vertically fixedly installed at both ends of the inverted arch, and one end of the positioning rod is inserted into the positioning groove.

[0013] In the utility model, the beneficial effects are:

[0014] The wedge block can be put into the arc hole by the cooperation of the pulling assembly, the transmission assembly, the moving block, the arc guide rail and the stop block. When the two arch beams are placed together, the wedge block can be inserted into the wedge groove, so that the arch beam can be assembled and disassembled in the vertical direction. The assembly method is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front view of a three-dimensional structure of a super-large cross-section highway assembled arch tunnel structure proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of an upward-looking three-dimensional exploded structure of a super-large-section highway assembled arched tunnel structure proposed by the utility model;

[0017] Figure 3 A schematic diagram of a three-dimensional partial cross-sectional structure of a super-large cross-section highway assembled arch tunnel structure proposed by the utility model;

[0018] Figure 4 A schematic diagram of a three-dimensional partial structure of the interior of a cavity in a super-large-section highway assembled arch tunnel structure proposed by the utility model;

[0019] Figure 5 for Figure 4 A magnified view of the structure in the middle.

[0020] In the figure: 1 arch beam, 2 wedge groove, 3 cavity, 4 wedge block, 5 arc guide rail, 6 moving block, 7 stop block, 8 arc spring rod, 9 connecting seat, 10 telescopic spring rod, 11 hanging plate, 12 mounting block, 13 steel cable, 14 U-shaped frame, 15 trapezoidal block, 16 inverted arch, 17 positioning rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 5 A super-large section highway assembled arch tunnel structure, comprising an arch beam 1, a front surface of the arch beam 1 symmetrically provided with wedge grooves 2, an arc-shaped cavity 3 provided inside the arch beam 1, a rear surface of the arch beam 1 symmetrically provided with arc-shaped holes both connected to the cavity 3, and wedge blocks 4 slidably installed in the two arc-shaped holes through telescopic spring rods 10;

[0023] When assembling two adjacent arch beams 1, one of the arch beams 1 is moved laterally and the wedge block 4 on the arch beam 1 is inserted into the wedge groove 2 on the other arch beam 1. The movement of the arch beam 1 in the vertical direction can be limited by the limiting of the wedge block 4 and the wedge groove 2.

[0024] An arc-shaped guide rail 5 is symmetrically fixedly installed in the cavity 3, a moving block 6 is slidably sleeved on the arc-shaped guide rail 5, a stopper 7 is fixedly installed on one end of the arc-shaped guide rail 5, an arc-shaped spring rod 8 is fixedly installed on the moving block 6, and one end of the arc-shaped spring rod 8 away from the moving block 6 is fixedly connected to the stopper 7, a pulling component for driving the moving block 6 to move is provided on the arch beam 1, and a transmission component for driving the wedge block 4 to move into the arc-shaped hole is provided on the moving block 6;

[0025] The upper surface of the arch beam 1 is symmetrically provided with rectangular holes which are all connected with the cavity 3. The pulling assembly includes a hanging plate 11 inserted in the rectangular hole, a mounting block 12 fixedly installed on the hanging plate 11, and a steel cable 13 fixedly installed on the mounting block 12. One end of the steel cable 13 away from the mounting block 12 is fixedly connected to the moving block 6. A hanging hole is provided on the surface of the hanging plate 11. A guide groove is provided on the stopper 7. The steel cable 13 is slidably inserted in the guide groove.

[0026] The transmission assembly includes a U-shaped frame 14 fixedly mounted on the wedge block 4 and a trapezoidal block 15 fixedly mounted on the moving block 6, with the inclined end of the trapezoidal block 15 facing the U-shaped frame 14;

[0027] When assembling the arch beam 1, a crane is used to connect the two hanging plates 11 on the arch beam 1. The hanging holes can connect the ropes on the crane to the hanging plates 11. When the crane lifts the arch beam 1, the arch beam 1 will move vertically downward under the action of its own gravity. At this time, the hanging plates 11 will move relative to the arch beam 1. The hanging plates 11 pull the moving block 6 on the arc guide rail 5 through the steel cable 13. The arc spring rod 8 is compressed, and the moving block 6 will drive the trapezoidal block 15 to move toward the U-shaped frame 14 during the movement. The U-shaped frame 14 contacts the inclined surface of the trapezoidal block 15. Under the action of the inclined surface, the U-shaped frame 14 will drive the wedge block 4 to the arc hole. When the arch beam 1 is moved, the telescopic spring rod 10 is compressed, so that the wedge block 4 will shrink into the arc hole. At this time, the wedge block 4 will not affect the assembly of the arch beam 1 in the vertical direction. When the arch beam 1 is placed next to another arch beam 1, the effect of the crane on the arch beam 1 disappears. At this time, under the action of the elastic force of the arc spring rod 8, the moving block 6 moves back and pulls the hanging plate 11 back into the rectangular hole through the steel cable 13. At the same time, under the action of the elastic force of the telescopic spring rod 10, the wedge block 4 will move out of the arc hole and be inserted into the wedge groove 2 on the other arch beam 1 to complete the assembly. The arch beam 1 can be assembled and disassembled in the vertical direction, and its assembly method is very convenient.

[0028] A connecting seat 9 is fixedly installed on the upper surface of the arch beam 1, and a plurality of connecting holes are opened on the connecting seat 9. When the two arch beams 1 are assembled together, the connecting seats 9 on the two arch beams 1 can be fixed together by bolt fasteners, so that the assembly of the two arch beams 1 is more secure.

[0029] A plurality of positioning grooves are provided at both ends of the arch beam 1, an inverted arch 16 is provided below the arch beam 1, a plurality of positioning rods 17 are vertically fixedly installed at both ends of the inverted arch 16, one end of the positioning rod 17 is inserted into the positioning groove, and the arch beam 1 is installed on the inverted arch 16, thereby enhancing the stability of the bottom of the arch beam 1.

[0030] In the utility model, the moving block 6 can be driven to move on the arc guide rail 5 by pulling the assembly, and then the moving block 6 can drive the wedge block 4 to move into the arc hole through the transmission assembly, so as to shrink into the arc hole. At this time, the wedge block 4 will not affect the assembly of the arch beam 1 in the vertical direction. In the assembled type, the pulling of the moving block 6 is cancelled. At this time, under the action of the elastic force of the telescopic spring rod 10, the wedge block 4 will be moved out of the arc hole and inserted into the wedge groove 2 on the other arch beam 1 to complete the assembly. The assembly and disassembly of the arch beam 1 in the vertical direction can be realized, and the assembly method is very convenient.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A super-large cross-section highway assembled arch tunnel structure, comprising an arch beam (1), characterized in that: The front surface of the arch beam (1) is symmetrically provided with wedge grooves (2), the interior of the arch beam (1) is provided with an arc-shaped cavity (3), the rear surface of the arch beam (1) is symmetrically provided with arc-shaped holes both connected to the cavity (3), and wedge blocks (4) are slidably installed in the two arc-shaped holes via telescopic spring rods (10); An arc-shaped guide rail (5) is symmetrically fixedly installed in the cavity (3), a moving block (6) is slidably sleeved on the arc-shaped guide rail (5), a stopper (7) is fixedly installed on one end of the arc-shaped guide rail (5), an arc-shaped spring rod (8) is fixedly installed on the moving block (6), and one end of the arc-shaped spring rod (8) away from the moving block (6) is fixedly connected to the stopper (7), a pulling component for driving the moving block (6) to move is provided on the arch beam (1), and a transmission component for driving the wedge block (4) to move into the arc-shaped hole is provided on the moving block (6).

2. The super-large section highway assembled arch tunnel structure according to claim 1, characterized in that: The upper surface of the arch beam (1) is symmetrically provided with rectangular holes which are both connected to the cavity (3); the pulling assembly comprises a hanging plate (11) inserted in the rectangular hole, a mounting block (12) fixedly mounted on the hanging plate (11), and a steel cable (13) fixedly mounted on the mounting block (12); one end of the steel cable (13) away from the mounting block (12) is fixedly connected to the moving block (6); and a hanging hole is provided on the surface of the hanging plate (11).

3. The super-large section highway assembled arch tunnel structure according to claim 2, characterized in that: The stopper (7) is provided with a guide groove, and the steel cable (13) is slidably inserted in the guide groove.

4. The super-large section highway assembled arch tunnel structure according to claim 1, characterized in that: The transmission assembly comprises a U-shaped frame (14) fixedly mounted on the wedge block (4) and a trapezoidal block (15) fixedly mounted on the moving block (6), wherein the inclined surface end of the trapezoidal block (15) faces the U-shaped frame (14).

5. The super-large section highway assembled arch tunnel structure according to claim 1, characterized in that: A connection seat (9) is fixedly mounted on the upper surface of the arch beam (1), and a plurality of connection holes are provided on the connection seat (9).

6. The super-large section highway assembled arch tunnel structure according to claim 1, characterized in that: A plurality of positioning grooves are provided at both ends of the arch beam (1), an inverted arch (16) is provided below the arch beam (1), and a plurality of positioning rods (17) are vertically fixedly installed at both ends of the inverted arch (16), and one end of the positioning rod (17) is inserted into the positioning groove.

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