Reinforcing device for turnout zone of underneath pass railway

Abstract

The utility model discloses a reinforcing device for an underneath pass railway turnout zone. The reinforcing device comprises a supporting and splicing assembly, a bottom plate arranged on the supporting and splicing assembly, a lower guide beam installed on the top of the bottom plate and main lower beams symmetrically distributed. The utility model has the beneficial effects that through the supporting and splicing assembly, a stable foundation is provided for the whole device, and soil pressure and vehicle load transmitted from the side surface and the top can be effectively supported; the stability is further enhanced through structures such as a lower guide beam, a main lower beam, a guide beam stand column and a main beam stand column, and the shield top plate and all components work cooperatively, so that the complex stress condition of a railway turnout zone can be better dealt with; the steel structure sub-shield is combined with the reinforced concrete lattice, and the steel structure sub-shield and the reinforced concrete lattice are integrally poured with the frame main body, so that the overall strength and stability of the structure are greatly improved; the rigidity of the reinforced concrete lattice is increased, the reinforced concrete lattice and the frame body form a whole, large external loads can be borne, and the requirement for strict settlement control of a railway turnout zone is met.

Description

Technical Field

[0001] This utility model belongs to the field of turnout area reinforcement technology, specifically relating to a reinforcement device for underpass railway turnout areas. Background Technology

[0002] The application of shield tunneling technology in jacking construction is a new trend in the development of jacking construction. The shield tunneling method is designed with a complete earth pressure balance system and excavation protection system, which not only reduces the impact on the ground surface at the work site, but also improves the safety of construction, making it a development direction for jacking construction.

[0003] In order to apply the principles of shield tunneling to the construction of underpass jacking, civil engineers have conducted many beneficial explorations. The "bridge shield tunneling method" is a simpler, more convenient, economical and reasonable form of shield tunneling for frame bridges. It is a further improvement and perfection of the traditional shield tunneling method. Its working principle is the same as that of open shield tunneling using the natural balance method or semi-natural balance method, but its cost is lower, the operation requirements are not very high, and it can be flexibly assembled according to different cross-sectional forms of frame bridges. It is more suitable for the jacking construction of frame bridges under constantly changing cross-sectional dimensions, and its adaptability is greatly improved, which is suitable for the current construction needs.

[0004] The patent publication number CN100535392C discloses a method for constructing a box girder bridge using a shield tunnel. This patent includes the following steps: excavating a foundation pit on the side of the road section where the box girder bridge needs to be built, based on the design height of the box girder bridge; fabricating a sliding plate according to the bridge's length; prefabricating the box girder bridge according to design requirements; fabricating and installing the shield tunnel according to the height and width of the box girder bridge; reinforcing the railway line as needed; performing a cyclical box girder bridge jacking operation in the sequence of sub-shield tunneling, central soil excavation and transportation, axis measurement, box girder bridge jacking, jacking correction, and line maintenance; restoring normal railway line operation and dismantling the shield tunnel after the box girder bridge is in place. The shield tunnels in this patent are all welded steel structures, requiring a large amount of steel. They are assembled and welded on-site, resulting in a huge amount of on-site welding work, making it difficult to control welding quality. During underground excavation, welding deformation is easily caused, which is detrimental to the stability of the railway line and roadbed. Utility Model Content

[0005] The purpose of this utility model is to provide a reinforcement device for railway turnout areas underpasses, to ensure the traffic safety of existing railways during the tunneling process, reduce construction risks, and minimize the impact on existing railway equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reinforcement device for railway turnout underpasses, comprising a support splicing assembly, a base plate mounted on the support splicing assembly, a lower guide beam and symmetrically distributed main lower beams mounted on the top of the base plate, guide beam columns symmetrically mounted on the top of the lower guide beams, main beam columns mounted on the top of the two main lower beams, sliding plates mounted on the top of the two guide beam columns, a main upper beam mounted on the top of the two main beam columns, and a shield tunneling top plate mounted on the top of the two main upper beams, with the shield tunneling top plate located above the sliding plates; further comprising...

[0007] A drive unit is located on top of the slide plate, a sliding frame is located at the output end of the drive unit, and the sliding frame and the slide plate are slidably connected. A sub-shield cutting foot is located on the sliding frame for cutting rock and soil.

[0008] Preferably, it also includes a first main beam tie beam disposed between the two main lower beams, and the first main beam tie beam and the bottom plate are detachably connected.

[0009] Preferably, it also includes a second main beam tie beam disposed between the two main upper beams, and the second main beam tie beam is detachably connected to the shield top plate.

[0010] Preferably, the driving component is one of a hydraulic cylinder or a jack.

[0011] Preferably, it also includes multiple fastening blocks installed at the bottom of the slide frame, fastening grooves formed on the front surface of the fastening blocks, and rollers installed on the fastening grooves.

[0012] Preferably, the supporting splicing assembly includes a base frame, a U-shaped steel at the top of the base frame, and a top frame at the top of the U-shaped steel and detachably connected to the base plate.

[0013] Preferably, it also includes two fasteners installed on the U-shaped steel, one fastener being fixedly connected to the top frame and the other fastener being fixedly connected to the bottom frame.

[0014] Preferably, it also includes a fastening seat installed on the inner side of the U-shaped steel, a fastening hole opened on the inner side of the fastening seat, a rib plate set on the fastening seat, multiple connecting rods set on the base frame and the rib plate, and fastening lugs set on the connecting rods.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The supporting splicing components provide a stable foundation for the entire device, ensuring effective support for soil pressure and vehicle loads transmitted from the sides and top. The lower guide beam, main lower beam, guide beam column, and main beam column further enhance stability. The shield top plate works in coordination with each component to better cope with the complex stress conditions in the railway turnout area. The combination of steel structure sub-shield and reinforced concrete lattice, and the integral casting with the main frame, greatly improves the overall strength and stability of the structure. The reinforced concrete lattice increases its own rigidity and forms an integral whole with the main frame, which can withstand large external loads and meet the strict requirements for settlement control in the railway turnout area.

[0017] The design of the tunnel boring machine can form a natural earth pressure balance system; the natural earth pressure balance system uses the length of the tunnel boring machine itself to form a stable slope at the excavation face to balance the original soil stress, thereby reducing the risk of soil deformation and collapse. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural diagram of the fastening base and U-shaped steel splicing of this utility model;

[0020] Figure 3 This is a schematic diagram of the fastener structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rib plate and fastening seat structure of this utility model;

[0022] Figure 5 For the present utility model Figure 1 A schematic diagram of the enlarged structure of region M in the diagram;

[0023] In the diagram: 1. Base frame; 2. U-shaped steel; 3. Rib plate; 31. Fastening seat; 310. Fastening hole; 4. Connecting rod; 41. Fastening lug; 5. Top frame; 61. Base plate; 62. Lower guide beam; 63. Guide beam column; 64. Main lower beam; 65. First main beam tie beam; 66. Main beam column; 67. Main upper beam; 68. Second main beam tie beam; 69. Shield top plate; 70. Slide plate; 71. Sliding frame; 72. Sub-shield cutting edge; 73. Fastening block; 730. Fastening groove; 74. Roller; 8. Fastener. Detailed Implementation

[0024] 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. Example 1

[0025] Please see Figures 1-5 This is the first embodiment of the present invention, which provides a reinforcement device for an underpass railway turnout area. It includes a support splicing assembly, a base plate 61 mounted on the support splicing assembly, a base frame 1 providing stable support, a U-shaped steel 2 mounted on the top of the base frame 1 (adding the U-shaped steel 2), a top frame 5 mounted on the top of the U-shaped steel 2 and detachably connected to the base plate 61 for better support of the base plate 61, and two fasteners 8 bolted to the U-shaped steel 2. Fastener 8 has a U-shaped structure. One fastener 8 is bolted to the top frame 5, securing the U-shaped steel 2 and the top frame 5 firmly. The other fastener 8 is bolted to the base frame 1, securing the U-shaped steel 2 and the base frame 1 firmly. It also includes a fastening seat 31 installed on the inner side of the U-shaped steel 2, adding a fastening seat 31. A fastening hole 310 is provided on the inner side of the fastening seat 31, allowing bolts to pass through and achieving a stable connection between the fastening seat 31 and the U-shaped steel 2. The upper rib plate 3 increases the strength of the fastening seat 31 and the rib plate 3. Multiple connecting rods 4 are set on the base frame 1 and the rib plate 3, and fastening ears 41 are set on the connecting rods 4 to facilitate the stable installation of the connecting rods 4 by using the fastening ears 41 with rivets, thereby increasing the strength of the supporting splicing components. The lower guide beam 62 and the symmetrically distributed main lower beams 64 installed on the top of the base plate 61 realize the addition of the lower guide beam 62 and the main lower beam 64. The guide beam columns 63 symmetrically set on the top of the lower guide beam 62 realize the addition of the guide beam columns 63. The main beam columns 66 are installed on top of the two main lower beams 64, providing additional support for the main beam columns 66. The sliding plates 70 are installed on top of the two guide beam columns 63, providing additional support for the sliding plates 70. The main upper beam 67 is installed on top of the two main beam columns 66, adding to the main upper beam 67. The shield tunneling top plate 69 is installed on top of the two main upper beams 67, adding to the shield tunneling top plate 69. The shield tunneling top plate 69 supports the soil and rock, and is located above the sliding plates 70. It also includes...

[0026] The drive unit is located on top of the slide plate 70, and the sliding frame 71 is located at the output end of the drive unit. The drive unit can be a hydraulic cylinder or a jack. The sliding frame 71 is moved by the hydraulic cylinder or jack, and the sliding frame 71 and the slide plate 70 are slidably connected. The sub-shield cutting foot 72 for cutting rock and soil is set on the sliding frame 71. The sub-shield cutting foot 72 and the sliding frame 71 are fixed by multiple bolts. When the sub-shield cutting foot 72 is worn, it can be disassembled and replaced.

[0027] In this embodiment, preferably, a first main beam tie beam 65 is also provided between the two main lower beams 64, and the first main beam tie beam 65 and the bottom plate 61 are detachably connected, thus realizing the addition of the first main beam tie beam 65.

[0028] In this embodiment, preferably, a second main beam tie beam 68 is also provided between the two main upper beams 67, and the second main beam tie beam 68 and the shield top plate 69 are detachably connected, thus realizing the addition of the second main beam tie beam 68. Example 2

[0029] Please see Figures 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment, but differs in that:

[0030] It also includes multiple fastening blocks 73 that are screwed to the bottom of the slide frame 71, which achieves a stable installation of the fastening blocks 73. A fastening groove 730 is opened on the front surface of the fastening block 73, which achieves the opening of the fastening groove 730. A roller 74 is installed on the fastening groove 730. When the slide frame 71 moves, the roller 74 increases the convenience of the slide frame 71 to move.

[0031] A guide plate is installed on the sub-shield cutting foot 72, and a guide groove corresponding to the guide plate is opened on the sliding frame 71. By using the cooperation of the guide plate and the guide groove, the guidance during the installation of the sub-shield cutting foot 72 is increased, and the efficiency of splicing the sub-shield cutting foot 72 and the sliding frame 71 is improved.

[0032] The reinforcement device for the underpass railway turnout area of ​​this utility model is set at the front end of the frame bridge. Its main function is to support the earth pressure and vehicle load transmitted from the side and top. It forms a stable earth pressure balance system through a specific structure to ensure construction safety and railway operation safety.

[0033] Earth pressure balance system formation

[0034] Natural earth pressure balance system: The shield body is set to a certain length. During the excavation process, the excavation face will form a stable slope. This slope can balance the stress in the original soil, thus forming a natural earth pressure balance system, reducing the risk of soil deformation and collapse.

[0035] Advanced support and jacking power

[0036] Advanced support: The sub-shield set at the front end of the tunnel bridge shield body (the structure where the sub-shield cutting foot 72 is located is part of the sub-shield structure) plays the role of advanced support; before the shield body advances forward, the sub-shield first supports the soil in front to prevent the soil from collapsing during the excavation process and create safe conditions for subsequent construction.

[0037] Jacking power: The jacking of the whole shield relies on the jacking force provided by the jacking picks at the rear of the frame bridge or the intermediate jacking picks; these jacking picks generate a strong thrust, which pushes the shield and frame bridge forward until they reach the design position and complete the entire jacking construction of the frame bridge.

[0038] The structure of this device combines a steel sub-shield and a reinforced concrete lattice (shield body). The reinforced concrete lattice, as the shield body, is integrally cast with the frame body, providing strong support and stability to meet the strict requirements for settlement control in railway turnout areas. In this process, the supporting splicing components (including the structure composed of components such as the base frame 1, U-shaped steel 2, and top frame 5), the base plate 61, the lower guide beam 62, the main lower beam 64, the guide beam column 63, the main beam column 66, the main upper beam 67, and the shield top plate 69 work together. The supporting splicing components, through components such as the base frame 1, U-shaped steel 2, top frame 5, and fasteners 8, achieve stable support and connection, providing a stable foundation for the superstructure. The lower guide beam 62, the main lower beam 64, the guide beam column 63, and the main beam column 66 further enhance the stability of the structure, ensuring effective support for the load transmitted from the shield top plate 69.

[0039] The working principle and usage process of this utility model are as follows: First, install the support splicing assembly, place the base frame 1 in the predetermined position to ensure stable support; then, install the U-shaped steel 2 on the top of the base frame 1, and connect the fasteners 8 to the U-shaped steel 2 and the base frame 1 respectively with bolts to firmly fix the U-shaped steel 2 to the base frame 1; next, install the top frame 5 on the top of the U-shaped steel 2, and connect another fastener 8 to the U-shaped steel 2 and the top frame 5 with bolts to complete the installation of the support splicing assembly; during the installation process, install the fastening seat 31 on the inner side of the U-shaped steel 2, and use bolts to pass through the fastening holes 310 on the inner side of the fastening seat 31 to achieve a stable splicing between the fastening seat 31 and the U-shaped steel 2, and install the rib plate 3 to enhance the strength of the fastening seat 31; at the same time, install multiple connecting rods 4 on the base frame 1 and the rib plate 3, and use fastening ears 41 with rivets to achieve a stable installation of the connecting rods 4, further increasing the strength of the support splicing assembly;

[0040] A base plate 61 is installed on the supporting splicing assembly. Then, a lower guide beam 62 and symmetrically distributed main lower beams 64 are installed on top of the base plate 61. Next, guide beam columns 63 are installed on top of the symmetrically arranged lower guide beams 62, and main beam columns 66 are installed on top of the two main lower beams 64. After that, a sliding plate 70 is installed on top of the two guide beam columns 63, and a main upper beam 67 is installed on top of the two main beam columns 66. Finally, a shield top plate 69 is installed on top of the two main upper beams 67. During the installation process, a first main beam tie beam 65 and a second main beam tie beam 68 are installed as needed. The first main beam tie beam 65 is located between the two main lower beams 64 and is detachably connected to the base plate 61. The second main beam tie beam 68 is located between the two main upper beams 67 and is detachably connected to the shield top plate 69.

[0041] The sub-shield cutting edge 72 is fixed to the sliding frame 71 with multiple bolts; multiple fastening blocks 73 are installed at the bottom of the sliding frame 71 with screws, and fastening grooves 730 are opened on the front surface of the fastening blocks 73. Rollers 74 are installed on the fastening grooves 730 to increase the ease of movement of the sliding frame 71; then the sliding frame 71 with the sub-shield cutting edge 72 installed is installed on the output end of the drive component at the top of the slide plate 70.

[0042] The drive unit is activated, and the sliding frame 71 and the sub-shield cutting foot 72 are moved by hydraulic cylinders or jacks. The sub-shield cutting foot 72 cuts the rock and soil. Since the jacking of the entire shield relies on the jacking force provided by the jacking pick at the rear of the frame bridge or the intermediate jacking pick, the shield body and the frame bridge move forward as a whole under the action of the jacking pick. During the advancement, the sub-shield at the front end of the shield body plays an advanced support role, and the stable slope formed at the excavation face maintains the earth pressure balance system. As the shield body advances, it continuously cuts the rock and soil in front until it reaches the design position, completing the entire jacking construction of the frame bridge.

[0043] Although embodiments of the present invention have been shown and described in detail above, 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 reinforcement device for railway turnout areas, characterized in that: The system includes a support splicing assembly, a base plate (61) mounted on the support splicing assembly, a lower guide beam (62) and symmetrically distributed main lower beams (64) mounted on the top of the base plate (61), guide beam columns (63) symmetrically mounted on the top of the lower guide beams (62), main beam columns (66) mounted on the top of the two main lower beams (64), a sliding plate (70) mounted on the top of the two guide beam columns (63), a main upper beam (67) mounted on the top of the two main upper beams (66), and a shield tunneling top plate (69) mounted on the top of the two main upper beams (67), with the shield tunneling top plate (69) located above the sliding plate (70); it also includes A drive unit is set on the top of the slide plate (70), a slide frame (71) is set on the output end of the drive unit, and the slide frame (71) and the slide plate (70) are slidably connected, and a sub-shield cutting foot (72) for cutting rock and soil is set on the slide frame (71).

2. The reinforcement device for the underpass railway turnout area according to claim 1, characterized in that: It also includes a first main beam tie beam (65) located between two main lower beams (64), and the first main beam tie beam (65) and the bottom plate (61) are detachably connected.

3. The reinforcement device for the underpass railway turnout area according to claim 1, characterized in that: It also includes a second main beam tie beam (68) set between the two main upper beams (67), and the second main beam tie beam (68) and the shield top plate (69) are detachably connected.

4. The reinforcement device for the underpass railway turnout area according to claim 1, characterized in that: The driving component is either a hydraulic cylinder or a jack.

5. The reinforcement device for the underpass railway turnout area according to claim 1, characterized in that: It also includes multiple fastening blocks (73) installed at the bottom of the slide frame (71), fastening grooves (730) opened on the front surface of the fastening blocks (73), and rollers (74) installed on the fastening grooves (730).

6. The reinforcement device for the underpass railway turnout area according to claim 1, characterized in that: The supporting splicing assembly includes a base frame (1), a U-shaped steel (2) set at the top of the base frame (1), and a top frame (5) set at the top of the U-shaped steel (2) and detachably connected to the base plate (61).

7. The reinforcement device for the underpass railway turnout area according to claim 6, characterized in that: It also includes two fasteners (8) installed on the U-shaped steel (2), one fastener (8) being fixedly connected to the top frame (5) and the other fastener (8) being fixedly connected to the bottom frame (1).

8. The reinforcement device for the underpass railway turnout area according to claim 6, characterized in that: It also includes a fastening seat (31) installed on the inner side of the U-shaped steel (2), a fastening hole (310) opened on the inner side of the fastening seat (31), a rib plate (3) set on the fastening seat (31), multiple connecting rods (4) set on the base frame (1) and the rib plate (3), and fastening ears (41) set on the connecting rods (4).

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