Connection method between external engineering of rail transit protection zone and main structure of operating station

Abstract

The present application relates to a method for connecting an external project in a rail transit protection zone with the main structure of an operating station. The present application is applicable to the field of rail transit engineering construction technology. The technical solution includes: constructing a first-phase connecting channel from the external project to the engineering doorway position of the station main structure, until the distance between the first-phase connecting channel and the station main structure reaches a preset range; chiseling out the station enclosure corresponding to the engineering doorway of the station main structure to form a construction channel on the station enclosure that is compatible with the engineering doorway of the station main structure; arranging a channel reinforcement structure in the second-phase connecting channel, which is connected to the reinforcement structure in the station main structure; one end of the second-phase connecting channel is connected to the engineering doorway of the station main structure, and the other end passes through the construction channel on the station enclosure to connect to the first-phase connecting channel; pouring the second-phase connecting channel.

Description

Technical Field

[0001] The present invention relates to a method for connecting an external project of a rail transit protection zone with a main structure of an operating station, and is applicable to the technical field of rail transit engineering construction. Background Art

[0002] The construction process of rail transit projects often involves the connection construction between external projects and the main structure of operating stations, but the existing construction methods are relatively complicated and the construction period is long.

[0003] During the construction of rail transit projects, commonly used methods for connecting external projects with the main structure of operating stations include traditional structural transformation and reinforcement methods, prefabricated assembly methods, on-site casting methods, and jacking methods. Prefabricated assembly construction methods have been applied in subway projects in many cities, such as Changchun Metro Line 2, and subway station construction in Beijing, Qingdao, and Shenzhen. These projects usually adopt prefabricated assembly methods to prefabricate the main structure of the station in the factory and then transport it to the site for splicing, thereby shortening the construction period, improving the quality of the project, and reducing the impact on the environment. Compared with the prefabricated assembly methods in existing engineering examples, this application has stronger applicability and flexibility, and can provide suitable connection methods for different structural conditions. Through steel bar connectors and inverted bracket structures, a more stable and reliable connection is achieved, reducing the impact on the original station structure, and is more advantageous in the complex environment of the already operating station, and can reduce construction costs.

[0004] Therefore, this method solves the problems of long construction cycle, high difficulty and great impact on the operating environment in traditional construction methods in terms of simplifying construction process, improving construction efficiency and adapting to various construction situations. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in response to the above-mentioned problems, a method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station is provided, which has a simple structure, convenient construction and a short construction period.

[0006] The technical solution adopted by the present invention is: a method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, characterized by comprising:

[0007] Construct a first-phase connecting passage from the external engineering to the engineering door opening of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range;

[0008] Chisel away the station enclosure corresponding to the door opening of the station main structure project to form a construction passage on the station enclosure that is compatible with the door opening of the station main structure project;

[0009] Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station; one end of the second phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel;

[0010] Casting of the second phase connecting channel.

[0011] A method for connecting an external engineering project in a rail transit protection zone with a main structure of an operating station, characterized by comprising:

[0012] Construct a first-phase connecting passage from the external project to the planned construction site of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range;

[0013] Remove the station enclosure corresponding to the planned construction doorway to form a construction passage on the station enclosure that is compatible with the construction doorway;

[0014] Remove the inner lining wall within the scope of the planned engineering door opening on the main structure of the station to form the engineering door opening on the main structure;

[0015] Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station; one end of the second phase connecting channel is connected to the engineering door opening of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel;

[0016] Casting of the second phase connecting channel.

[0017] A steel bar connector is pre-buried in the main structure of the station at the location corresponding to the engineering doorway, which is convenient for connecting with the channel steel bar structure in the second phase connecting channel.

[0018] When chiseling out the station enclosure corresponding to the project doorway, some steel bars are reserved for connecting the second phase connecting channel and the station enclosure.

[0019] An inner beam-column structure is provided corresponding to the edge of the engineering door opening, and the steel bars in the inner beam-column structure are connected to the channel steel bar structure.

[0020] An outer beam-column structure is provided corresponding to the edge of the construction channel, and the steel bars in the outer beam-column structure are connected to the channel steel bar structure.

[0021] An inverted corbel structure is provided corresponding to the bottom plate of the second phase connecting passage, and the steel bars in the inverted corbel structure are welded to the steel bars on the station enclosure.

[0022] An inverted corbel structure is provided corresponding to the top plate of the second phase connecting passage, and the steel bars in the inverted corbel structure are welded to the steel bars on the station enclosure.

[0023] The first phase connecting passage is 1 meter away from the station enclosure.

[0024] The beneficial effects of the present invention are as follows: the present invention constructs the connecting passage in phases, and after the distance between the first-phase connecting passage and the main structure of the station reaches a preset range, the station enclosure, the main structure of the station, etc. are constructed, and finally the second-phase connecting passage connecting the engineering doorway and the first-phase connecting passage is constructed. The structure is simple, the construction is convenient, the construction period is short, and it is safe and reliable.

[0025] When the present invention is constructing the station enclosure, the station main structure, etc., the first phase connecting channel has been constructed to a certain range outside the station enclosure, and the soil structure outside the station enclosure construction area is basically stable. When the station enclosure and the station main structure are excavated, the impact on the station main structure is small, and the safety risk is small.

[0026] The present invention enhances the structural stability of the connection portion between the second-phase connecting channel and the engineering doorway by arranging beam-column structures at the edges of the engineering doorway and the construction channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram before and after construction of Example 1.

[0028] Figure 2 This is a structural diagram of Example 2.

[0029] Figure 3 Schematic diagram before and after construction of Example 3.

[0030] Figure 4 This is a schematic structural diagram of Example 4.

[0031] Figure 5 Schematic diagram before and after construction of Example 5.

[0032] Figure 6 This is a structural diagram of Example 6.

[0033] 1. Main structure of the station; 2. Phase I connecting passage; 3. Station enclosure; 4. Phase II connecting passage; 5. Inverted corbel structure; 6. Expansion joint; 7. Construction joint; 8. Inner lining wall; 9. Rebar connector; 10. Inner beam-column structure; 11. Outer beam-column structure. DETAILED DESCRIPTION

[0034] Example 1: Figure 1 As shown, this embodiment is a method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station, which specifically includes the following steps:

[0035] S1. Construct a first-phase connecting passage from the external engineering to the engineering door opening position of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range.

[0036] In this embodiment, a deformation joint is set on the first phase connecting channel at a distance of 3.3m from the station enclosure, and the first phase connecting channel is constructed to within 1.0m from the outside of the station enclosure.

[0037] In this example, an inverted corbel structure is set on the outer side of the bottom plate of the first-phase connecting channel. The inverted corbel structure is connected to the outer side of the station enclosure. The internal steel bars of the inverted corbel are welded to the outer steel bars of the station enclosure wall. The inverted corbel structure is connected to the bottom plate of the first-phase connecting channel, and the internal steel bars of the inverted corbel are connected to the internal steel bars of the first-phase connecting channel through the connecting steel bars.

[0038] S2. Remove the station enclosure corresponding to the doorway of the station main structure project to form a construction passage on the station enclosure that is compatible with the doorway of the station main structure project.

[0039] Use static cutting or manual chiseling to remove the station enclosure at the interface. Note that ground wall reinforcement must be reserved at the bottom plate to connect the second phase connecting channel and the station enclosure.

[0040] S3. Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station.

[0041] S4. Cast the second phase connecting channel. One end of the second phase connecting channel is connected to the engineering doorway of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel. A construction joint is formed between the first and second phase connecting channels.

[0042] In this embodiment, steel bar connectors are reserved in the bottom beams and top beams of the station main structure to facilitate connection with the channel steel bar structure in the second phase connecting channel.

[0043] Example 2: Figure 2 As shown, this embodiment is basically the same as embodiment 1, and the only difference is that in this embodiment, an inverted corbel structure is set on the outside of the top plate and the bottom plate of the first-phase connecting channel at the same time, the inverted corbel structure is connected to the outer surface of the station enclosure, and the internal steel bars of the inverted corbel are welded to the outer steel bars of the station enclosure wall; the inverted corbel structure is connected to the bottom plate of the first-phase connecting channel, and the internal steel bars of the inverted corbel are connected to the internal steel bars of the first-phase connecting channel through the connecting steel bars.

[0044] Example 3: Figure 3 As shown, this embodiment is a method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station, which specifically includes the following steps:

[0045] S1. Construct a first-phase connecting passage from the external project to the doorway location of the planned construction project on the top floor of the station main structure until the first-phase connecting passage is constructed within 1.0m from the outside of the station enclosure.

[0046] S2. Remove the station enclosure corresponding to the proposed construction portal to create a construction passageway on the station enclosure that is compatible with the project portal. The station enclosure is removed by static force, cutting, or manual chiseling to achieve connection with the main structure of the existing station.

[0047] S3. Remove the inner lining wall within the scope of the planned construction portal on the main structure of the station to form a construction portal on the main structure that connects to the construction passage.

[0048] S4. Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station.

[0049] S5. Cast the second phase connecting channel. One end of the second phase connecting channel is connected to the engineering doorway of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel. A deformation joint is set between the first and second phase connecting channels.

[0050] In this embodiment, steel bar connectors are reserved in the bottom beams and top beams of the top floor of the station main structure to facilitate connection with the channel steel bar structure in the second phase connecting channel.

[0051] Example 4: Figure 4 As shown, this embodiment is basically the same as embodiment 3, with the only difference being that in this example, the doorway to be constructed is located in the middle layer of the main structure of the station, and concealed columns are provided on the inner lining wall of the main structure of the station, with steel bar connectors reserved in the concealed columns to facilitate connection with the channel steel bar structure in the second phase connecting channel.

[0052] Example 5: Figure 5 As shown, this embodiment is a method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station, which specifically includes the following steps:

[0053] S1. Construct a first-phase connecting passage from the external project to the doorway location of the planned construction project on the top floor of the station main structure until the first-phase connecting passage is constructed within 1.0m from the outside of the station enclosure.

[0054] S2. Remove the station enclosure corresponding to the proposed construction portal to create a construction passageway on the station enclosure that is compatible with the project portal. The station enclosure is removed by static force, cutting, or manual chiseling to achieve connection with the main structure of the existing station.

[0055] In this embodiment, an outer beam-column structure is set at the edge of the construction channel. The outer beam-column structure is used to connect with the channel reinforcement structure in the second-phase connecting channel, and the reinforcement in the second-phase connecting channel is implanted into the main structure.

[0056] S3. Remove the inner lining wall within the scope of the planned construction portal on the main structure of the station to form a construction portal on the main structure that connects to the construction passage.

[0057] In this embodiment, an inner beam-column structure is set at the edge of the construction channel. The inner beam-column structure is used to connect with the channel reinforcement structure in the second-phase connecting channel, and the reinforcement in the second-phase connecting channel is implanted into the main structure.

[0058] S4. Arrange the channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the main structure of the station.

[0059] S5. Cast the second phase connecting channel. One end of the second phase connecting channel is connected to the engineering doorway of the main structure of the station, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel. A deformation joint is set between the first and second phase connecting channels.

[0060] In this embodiment, since no steel bar connectors are reserved on the original station side walls, a beam-column system needs to be constructed on the inside and outside. Before the tunnel portal for connecting this type of project is removed, the use of steel sections or the like should be considered for temporary vertical support of the station structure in the connecting area based on the specific design conditions of the external connecting beam-column system of the station main structure external project.

[0061] In this case, the door opening should be cut out in blocks from both sides to the middle. The horizontal width of each block should not be greater than the vertical height of each block. It should be determined based on the actual situation such as the specific cutting method and the use function of the station at the connection.

[0062] Example 6: Figure 6 As shown, this embodiment is basically the same as embodiment 5, the only difference is that in this example, the door opening to be constructed is located in the middle layer of the station main structure, and the inner beam-column structure is connected to the steel bars in the hidden columns on the inner lining wall of the station main structure.

Claims

1. A method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, characterized in that: include: Construct a first-phase connecting passage from the external engineering to the engineering door opening of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range; Remove the station enclosure corresponding to the door opening of the station main structure project to form a construction passage on the station enclosure that is compatible with the door opening of the station main structure project; Arrange a channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the station main structure; one end of the second phase connecting channel is connected to the engineering door opening of the station main structure, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel; Casting of the second phase connecting channel.

2. A method for connecting the external engineering of a rail transit protection zone with the main structure of an operating station, characterized in that: include: Construct a first-phase connecting passage from the external project to the planned construction site of the station main structure until the distance between the first-phase connecting passage and the station main structure reaches the preset range; Remove the station enclosure corresponding to the planned construction doorway to form a construction passage on the station enclosure that is compatible with the construction doorway; Remove the inner lining wall within the scope of the planned engineering door opening on the main structure of the station to form the engineering door opening on the main structure; Arrange a channel reinforcement structure in the second phase connecting channel, which is connected to the reinforcement structure in the station main structure; one end of the second phase connecting channel is connected to the engineering door opening of the station main structure, and the other end passes through the construction channel on the station enclosure to connect to the first phase connecting channel; Casting of the second phase connecting channel.

3. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, characterized in that: A steel bar connector is pre-buried in the main structure of the station at the location corresponding to the engineering doorway, which is convenient for connecting with the channel steel bar structure in the second phase connecting channel.

4. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, characterized in that: When chiseling out the station enclosure corresponding to the project doorway, some steel bars are reserved for connecting the second phase connecting channel and the station enclosure.

5. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, characterized in that: An inner beam-column structure is provided corresponding to the edge of the engineering door opening, and the steel bars in the inner beam-column structure are connected to the channel steel bar structure.

6. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, characterized in that: An outer beam-column structure is provided corresponding to the edge of the construction channel, and the steel bars in the outer beam-column structure are connected to the channel steel bar structure.

7. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, characterized in that: An inverted corbel structure is provided corresponding to the bottom plate of the second phase connecting passage, and the steel bars in the inverted corbel structure are welded to the steel bars on the station enclosure.

8. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 7 is characterized by: An inverted corbel structure is provided corresponding to the top plate of the second phase connecting passage, and the steel bars in the inverted corbel structure are welded to the steel bars on the station enclosure.

9. The method for connecting the external engineering of the rail transit protection zone with the main structure of the operating station according to claim 1 or 2, characterized in that: The first phase connecting passage is 1 meter away from the station enclosure.

Images