Incremental launching method for extension of existing station building and temporary support frame used

Abstract

This application provides a jacking method for expanding existing station buildings and a temporary support frame used therein. The jacking method includes: setting a guide beam at the front end of the newly jacked steel structure of the station building; the guide beam reaching the existing platform before the new steel structure and being supported by a temporary support frame installed on the existing platform; pausing the jacking process after the new steel structure reaches the existing platform and is supported by a temporary main structure support frame installed on the existing platform; removing the temporary support frame and continuing the jacking process until the guide beam reaches the existing station building and is supported by a temporary support frame installed on the existing platform; continuing the jacking process until the new steel structure reaches the existing station building; wherein the temporary support frame and the temporary main structure support frame are erected on existing concrete columns on the existing platform. This jacking method improves jacking accuracy, cleverly utilizes existing structures, and reduces the amount of engineering work.

Description

Technical Field

[0001] This application relates to the technical field of expanding existing station buildings, and more specifically, to a jacking method for expanding existing station buildings and a temporary support frame used therein. Background Technology

[0002] For the expansion of existing station buildings, it must be completed while avoiding the existing structure, and for the large-span jacking process of the area structure, the overall rigidity of the jacking structure must be ensured. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a jacking method for expanding existing station buildings and a temporary support frame for use.

[0004] Specifically, the jacking method used for the expansion of existing station buildings includes:

[0005] A guide beam is installed at the front end of the newly constructed station building's steel structure that is being pushed forward;

[0006] During the jacking process, the guide beam arrives at the existing platform before the newly built station building steel structure and is supported by the temporary support frame for the guide beam installed on the existing platform;

[0007] The new station building steel structure is pushed to a halt after reaching the existing platform and being supported by the temporary main structure support frame set on the existing platform.

[0008] Remove the temporary support frame for the guide beam and continue pushing until the guide beam reaches the existing station building and is supported by the guide beam support frame installed on the existing station building;

[0009] Continue pushing until the steel structure of the new station building reaches the existing station building, then remove the front section of the guide beam;

[0010] The temporary support frame for the guide beam and the temporary support frame for the main structure are built on existing concrete columns erected on the existing platform.

[0011] Lifting refers to providing upward displacement by supporting or providing support.

[0012] In one embodiment, the guide beam is set at the beginning of the newly built station building steel structure and connected above the newly built station building steel structure.

[0013] In one embodiment, the lower surface of the guide beam is parallel to the upper surface of the new station building steel structure, and the upper surface of the guide beam is inclined to its upper surface and the end that connects to the new station building steel structure is the highest.

[0014] In one embodiment, the temporary support frame for the guide beam and the temporary support frame for the main structure are connected to the existing concrete columns of the existing platform via embedded steel plates.

[0015] In one embodiment, the jacking angle is corrected by a correction cylinder on the temporary support frame of the guide beam.

[0016] In one embodiment, during the jacking process, the transfer passage and the overpass structure, as well as the transfer passage and the waiting floor truss, in the newly built station building steel structure are connected by a one-way limiting connection.

[0017] In one embodiment, the structure realizing the unidirectional limiting connection between the transfer passage and the overpass structure, and between the transfer passage and the waiting floor truss in the steel structure of the newly built station building, includes:

[0018] A temporary hinged seat includes a center plate and two limiting posts symmetrical about the plane of the center plate. The center plate slides on a base between the two limiting posts, and the limiting posts are fixed to the base.

[0019] A movable body is disposed between the two limiting posts, and a vertically penetrating flat groove is opened at the vertical center surface of the movable body, and the central plate is located in the flat groove;

[0020] The overpass structure serves as the base of the temporary hinged seat, and the steel beam of the transfer passage becomes the movable body to realize the one-way limiting connection between the transfer passage and the overpass structure in the steel structure of the newly built station building.

[0021] The transfer passage support frame above the waiting level truss serves as the base of the temporary hinged seat, and the steel beam of the transfer passage becomes the movable body to realize the one-way limiting connection between the transfer passage and the waiting level truss in the steel structure of the newly built station building.

[0022] This application also provides a temporary support frame, comprising: the main structure temporary support frame and the guide beam temporary support frame described above, wherein the guide beam temporary support frame is located above the main structure temporary support frame.

[0023] In one embodiment, the main structural temporary support frame includes:

[0024] The first support frame is connected to the existing concrete column through the pre-embedded steel plate of the existing concrete column of the existing platform.

[0025] The operating platform is mounted on the first support frame;

[0026] A slide beam is provided with its length along the jacking direction, and a slide rail with the same direction as the jacking direction is provided on it. A sliding cylinder is provided on the slide rail.

[0027] In one embodiment, the temporary support frame for the guide beam is disposed above the temporary support frame for the main structure, and includes:

[0028] The second support frame, the slide beam and the slide pass through the bottom of the second support frame;

[0029] A lifting cylinder is mounted on the second support frame. The distance the cylinder rod of the lifting cylinder extends is determined according to the deformation of the guide beam, and it is used to lift the guide beam upward.

[0030] A correction device, installed on the second support frame, is used to correct the pushing direction of the guide beam.

[0031] The jacking method for expanding existing station buildings provided in this application includes: setting a guide beam at the front end of the newly jacked steel structure of the station building; during jacking, the guide beam reaches the existing platform before the newly jacked steel structure and is supported by a temporary support frame for the guide beam set on the existing platform; after the newly jacked steel structure reaches the existing platform and is supported by a temporary support frame for the main structure set on the existing platform, the jacking is paused; the temporary support frame for the guide beam is removed, and jacking continues until the guide beam reaches the existing station building and is supported by a guide beam support frame set on the existing station building; jacking continues until the newly jacked steel structure reaches the existing station building, and the front section of the guide beam is removed; wherein the temporary support frame for the guide beam and the temporary support frame for the main structure are erected on existing concrete columns set on the existing platform. The jacking method provided in this application utilizes the existing concrete columns on the existing platform to support the guide beam and the newly jacked steel structure during the jacking process, reducing deformation and improving jacking accuracy. In the expansion of existing station buildings, this application ingeniously utilizes the existing structure, saving both the amount of work and time, and represents a significant advancement.

[0032] This application also provides a temporary support frame, comprising: the aforementioned main structural temporary support frame and guide beam temporary support frame, wherein the guide beam temporary support frame is located above the main structural temporary support frame. According to the jacking method provided in this application, the temporary support frame is set directly above the main structural temporary support frame, thus eliminating the need for an excessively large operating platform. This achieves functionality while avoiding interference with the operational route, and simultaneously reduces the amount of engineering work, representing a significant improvement.

[0033] For further clarity, aspects and advantages of the embodiments disclosed in this application will become apparent in the following description or may be learned by practice of the embodiments disclosed in this application. Attached Figure Description

[0034] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation on the invention.

[0035] Figure 1 This is a schematic diagram of the structure being pushed in Embodiment 1 of this application;

[0036] Figure 2 This is a schematic diagram of the guide beam in the jacking method for expanding an existing station building provided in Embodiment 1 of this application;

[0037] Figures 3 to 7 This is a schematic diagram showing the location of the structure being pushed and the existing station building in the jacking method for expanding an existing station building provided in Embodiment 1 of this application.

[0038] Figure 8 This is a one-way limiting connection between the transfer passage and the overpass structure provided in Embodiment 1 of this application;

[0039] Figure 9 This is a one-way limiting connection between the transfer passage and the waiting floor truss provided in Embodiment 1 of this application;

[0040] Figure 10 This is a schematic diagram of the temporary support frame provided in Embodiment 2 of this application. Detailed Implementation

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0042] Example 1

[0043] Expansion of existing station buildings can improve the operational capacity of railway lines and make travel more convenient. The expansion of existing station buildings is achieved by assembling (or temporarily assembling) the structure of the new station building and then connecting it to the existing structure through a jacking method.

[0044] This embodiment provides a jacking method for expanding existing station buildings, comprising:

[0045] A guide beam is installed at the front end of the newly constructed station building's steel structure that is being pushed forward;

[0046] In this embodiment, refer to Figure 1 The newly constructed station building steel structure 100, which is being jacked up, includes a waiting level truss 101, a transfer passage 102, a skybridge structure 103, and a transfer passage support frame 104 above the waiting level truss 101. A first guide beam 201 is installed at the front end of the waiting level truss 101; a second guide beam 202 is installed at the front end of the skybridge structure 103. The first guide beam 201 and the second guide beam 202 are located at the front end of the newly constructed station building steel structure being jacked up. During jacking, they can reach the existing structure before the new station building steel structure and be supported, reducing the deformation of the new station building steel structure and lowering the difficulty of jacking up. The first guide beam 201 and the second guide beam 202 have small mass and, by being set up as a truss structure, have a certain resistance to deformation, thereby further reducing the degree of deformation of the structure being jacked up.

[0047] Figure 1 The waiting level truss 101, transfer passage 102, skybridge structure 103, and transfer passage support frame 104 above the waiting level truss 101, as well as the first guide beam 201 and the second guide beam 202, constitute the structure that is pushed.

[0048] Pushing the button:

[0049] S1: The first guide beam 201 and the second guide beam 202 arrive at the existing platform 400 before the newly built station building steel structure 100, and are supported by the temporary support frame of the guide beam set on the existing platform 400.

[0050] In this embodiment, refer to Figure 3 A lifting cylinder 302 is installed on the temporary support frame of the guide beam. The lifting cylinder 302 can adjust the extension length of the cylinder rod according to the height of the pushed structure monitored. If the height of the pushed structure indicates that its deformation is too large, the cylinder rod of the lifting cylinder 302 will extend upward to support the guide beam and reduce the deformation.

[0051] S2: The new station building steel structure 100 reaches the existing platform 400 and is supported by the temporary main structure support frame set on the existing platform 400, after which the jacking is paused. Figure 3 As shown;

[0052] In this embodiment, refer to Figure 3 A sliding cylinder 301 is installed on the temporary support frame of the main structure. The sliding cylinder 301 can adjust the extension length of the cylinder rod according to the height of the pushed structure monitored. If the height of the pushed structure indicates that its deformation is too large, the cylinder rod of the sliding cylinder 301 will extend upward to support the steel structure 100 of the new station building, thereby reducing the deformation.

[0053] S3: Remove the temporary support frame for the guide beam, as follows: Figure 4 As shown; continue pushing, during which the two sliding cylinders 301 provide alternating support and their positions change along the pushing direction, as follows. Figures 5 to 7 As shown, the first guide beam 201 and the second guide beam 202 reach the existing station building 500, and the first guide beam 201 is supported by the guide beam support frame 501 installed on the existing station building 500;

[0054] S4: Continue pushing until the newly built station building steel structure 100 reaches the existing station building 500, then remove the front sections of the first guide beam 201 and the second guide beam 202;

[0055] The temporary support frame for the guide beam and the temporary support frame for the main structure are erected on existing concrete columns on the existing platform 400. Therefore, the jacking method in this embodiment utilizes the existing concrete columns on the existing platform 400. The temporary support frame for the guide beam and the temporary support frame for the main structure are erected on these existing concrete columns. The lifting cylinder 302 on the temporary support frame for the guide beam and the sliding cylinder 301 on the temporary support frame for the main structure support lift the guide beam and the newly built station building steel structure during the jacking stroke, reducing deformation and improving jacking accuracy. By cleverly utilizing the existing structure, the amount of work is saved and time is reduced, representing a significant improvement.

[0056] This application claims priority to patent application CN 116220368A. In

[0041] of the publication text of that application, it is described that "the temporary sliding support for platform II2 adopts a stepped lattice support frame 20, which includes a structural truss sliding platform 23 and a guide beam temporary support pier 22. The structural truss sliding platform 23 adopts a double-I-beam platform. A structural truss fixed sliding shoe 13, jacks 18, limit rods 21, and a guide beam temporary support pier 22 are installed on the upper part of the structural truss sliding platform 23. The guide beam temporary support pier 22 is installed on the structural truss sliding platform 23. A guide beam fixed sliding shoe support 24 is installed on the upper part of the guide beam temporary support pier 22. A guide beam fixed sliding shoe 12 is installed on the top of the guide beam fixed sliding shoe support 24 to ensure that the elevation of the guide beam fixed sliding shoe 12 on the upper part of the guide beam temporary support pier 22 is consistent with the elevation of the lower chord of the guide beam 9 structure."

[0057] Platform II2 is the existing platform 400 mentioned in this application;

[0058] The structural truss sliding platform 23 is the temporary support frame for the main structure described in this application;

[0059] The temporary support pier 22 for the guide beam is the temporary support frame for the guide beam described in this application.

[0060] Furthermore, S1, S2, S3 and S4 can be spaced out over a relatively long period of time, and do not need to be partially or fully completed within a single window period. Therefore, the requirement for the duration of the window period is low, which further improves the applicability of the jacking method provided in this embodiment and makes the expansion of existing stations more feasible.

[0061] In this embodiment, refer to Figures 1 to 7 A first guide beam 201 is installed at the beginning of the new station building steel structure 100 and connected above the new station building steel structure 100. With this technical solution, the guide beam support frame 501 on the existing station building 500 can support the first guide beam 201, and after the jacking is completed, the guide beam support frame 501 can serve as support during the beam lowering stage.

[0062] This application claims priority to patent application publication number CN 116220368A. In

[0043] of that application, it is described that "the guide beam 9 includes a floor truss guide beam and a skybridge guide beam, both of which adopt an 'L' shaped structure and are connected above the front end of the existing rigid crossbeam 17," in which:

[0063] Guide beam 9 is the first guide beam 201 in this application.

[0064] In this embodiment, the lower surface of the first guide beam 201 is parallel to the upper surface of the newly built station building steel structure 100, and the upper surface of the first guide beam 201 is inclined to its upper surface, with the highest point being the end that connects to the newly built station building steel structure 100. (Refer to...) Figure 2 The upper surface of the first guide beam 201 is inclined downward at the front end, which helps to reduce the weight of the first guide beam 201, thereby maintaining its rigidity and improving the jacking accuracy.

[0065] In this embodiment, the existing platform 400 is further utilized during the construction of the temporary support frame for the guide beam and the temporary support frame for the main structure. The temporary support frame for the guide beam and the temporary support frame for the main structure are connected to the existing concrete columns of the existing platform 400 via embedded steel plates. In this technical solution, the temporary support frame for the guide beam and the temporary support frame for the main structure can increase stability by connecting to the embedded steel plates of the existing concrete columns, while the existing concrete columns can also be supported and reinforced by the temporary support frame for the guide beam and the temporary support frame for the main structure.

[0066] In this embodiment, refer to Figure 10 The jacking angle is corrected by the correction cylinder 307 on the temporary support frame of the guide beam, so as to correct the deviation of the jacking direction more timely and effectively.

[0067] In a preferred embodiment, during the jacking process, the transfer passage and the overpass structure, as well as the transfer passage and the waiting level truss, of the newly constructed station building's steel structure are connected by a one-way limiting connection. This one-way limiting connection means that the two connected objects are allowed relative movement along one or more axes, but the direction of relative movement can only be one: either forward or reverse, left or right, or front or back. Through this one-way limiting connection, during the jacking process, there can be slight relative movement between the transfer passage and the overpass structure, and between the transfer passage and the waiting level truss, thus preventing this large-area, large-span structure from getting stuck over a long jacking distance. Simultaneously, the one-way limiting connection ensures support and connection between the transfer passage and the overpass structure, and between the transfer passage and the waiting level truss, enabling them to advance together.

[0068] Furthermore, this embodiment provides an implementation method of the unidirectional limiting connection in the application scenario of this application, as referred to... Figure 8 and 9 The implementation structure of the unidirectional limiting connection includes:

[0069] A temporary hinged seat includes a center plate 11 and two limiting posts 12 symmetrical about the plane of the center plate. The center plate 11 slides on the base between the two limiting posts 12, and the limiting posts 12 are fixed to the base.

[0070] The movable body is located between two limiting posts 12, and a vertically penetrating flat groove 2 is opened at the vertical center surface of the movable body, with the center plate 11 located in the flat groove 2.

[0071] The overpass structure 103 serves as the base of the temporary hinged seat, and the steel beam of the transfer passage 102 becomes the movable body to realize the one-way limiting connection between the transfer passage 102 and the overpass structure 103 in the new station building steel structure 100.

[0072] The transfer passage support frame 104 above the waiting level truss 101 serves as the base of the temporary hinge seat, and the steel beam of the transfer passage 102 becomes the movable body to realize the one-way limiting connection between the transfer passage 102 and the waiting level truss 101 in the steel structure 100 of the new station building.

[0073] Furthermore, the unidirectional limiting connection structure provided in this embodiment does not need to be dismantled after the jacking is completed; it can be further fixed by welding or bolts, thus improving the efficiency of the expansion project.

[0074] Example 2

[0075] This embodiment provides a temporary support frame, which can be used in Embodiment 1 as a temporary support frame for the main structure and a temporary support frame for the guide beam.

[0076] Specifically, refer to Figure 10 The temporary support frame includes: the main structure temporary support frame and the guide beam temporary support frame, and the guide beam temporary support frame is located above the main structure temporary support frame.

[0077] The temporary support frame for the main structure includes:

[0078] The first support frame 303 is connected to the existing concrete column 401 through the embedded steel plate of the existing platform 400.

[0079] The operating platform 306 is mounted on the first support frame 303;

[0080] The slide beam is set along the jacking direction, and a slide rail 304 with the same direction as the jacking direction is set on it. Two or more sliding cylinders 301 are set on the slide rail 304.

[0081] The temporary support frame for the guide beam is installed above the temporary support frame for the main structure and includes:

[0082] The second support frame 305, the slide beam and slide 304 pass through the bottom of the second support frame 305;

[0083] The lifting cylinder 302 is mounted on the second support frame 305. The distance the cylinder rod of the lifting cylinder 302 extends is determined according to the deformation of the guide beam, and it is used to lift the guide beam upward.

[0084] The correction device 307 is mounted on the second support frame 305 and is used to correct the pushing direction of the guide beam.

[0085] In this embodiment, the second support frame 305 is also provided with a guide beam slide 308. The guide beam slide 308 is provided with a sliding surface layer or rollers with a low coefficient of friction, which can reduce the friction force when the guide beam moves while supporting the guide beam.

[0086] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this technical solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this technical solution.

[0087] In this technical solution, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this technical solution according to the specific circumstances.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present technical solution. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A jacking method for expanding existing station buildings, characterized in that, Include: A guide beam is installed at the front end of the newly constructed station building's steel structure that is being pushed forward; During the jacking process, the guide beam arrives at the existing platform before the newly built station building steel structure and is supported by the temporary support frame for the guide beam installed on the existing platform; The new station building steel structure is pushed to a halt after reaching the existing platform and being supported by the temporary main structure support frame set on the existing platform. Remove the temporary support frame for the guide beam and continue pushing until the guide beam reaches the existing station building and is supported by the guide beam support frame installed on the existing station building; Continue pushing until the steel structure of the new station building reaches the existing station building, then remove the front section of the guide beam; The temporary support frame for the guide beam and the temporary support frame for the main structure are built on existing concrete columns erected on the existing platform. During the jacking process, the transfer passage and the overpass structure, as well as the transfer passage and the waiting floor truss, in the newly built station building steel structure are connected by a one-way limiting connection. The structure realizing the unidirectional limiting connection between the transfer passage and the overpass structure, and between the transfer passage and the waiting floor truss in the steel structure of the newly built station building, includes: A temporary hinged seat includes a center plate and two limiting posts symmetrical about the plane of the center plate. The center plate slides on a base between the two limiting posts, and the limiting posts are fixed to the base. A movable body is disposed between the two limiting posts, and a vertically penetrating flat groove is opened at the vertical center surface of the movable body, and the central plate is located in the flat groove; The overpass structure serves as the base of the temporary hinged seat, and the steel beam of the transfer passage becomes the movable body to realize the one-way limiting connection between the transfer passage and the overpass structure in the steel structure of the newly built station building. The transfer passage support frame above the waiting level truss serves as the base of the temporary hinged seat, and the steel beam of the transfer passage becomes the movable body to realize the one-way limiting connection between the transfer passage and the waiting level truss in the steel structure of the newly built station building.

2. The jacking method for expanding existing station buildings according to claim 1, characterized in that, The guide beam is installed at the beginning of the steel structure of the newly built station building and connected to the top of the steel structure of the newly built station building.

3. The jacking method for expanding existing station buildings according to claim 1, characterized in that, The lower surface of the guide beam is parallel to the upper surface of the new station building steel structure, and the upper surface of the guide beam is inclined to its upper surface, with the end that connects to the new station building steel structure being the highest.

4. The jacking method for expanding existing station buildings according to claim 1, characterized in that, The temporary support frame for the guide beam and the temporary support frame for the main structure are connected to the existing concrete columns of the existing platform through pre-embedded steel plates.

5. The jacking method for expanding existing station buildings according to claim 1, characterized in that, The jacking angle is corrected by the correction cylinder on the temporary support frame of the guide beam.

6. A temporary support frame, characterized in that, It includes: the main structural temporary support frame and the guide beam temporary support frame as described in any one of claims 1 to 5, wherein the guide beam temporary support frame spans above the main structural temporary support frame; The temporary support frame for the main structure includes a first support frame, an operating platform, and a slide beam, wherein: The first support frame is connected to the existing concrete column through the pre-embedded steel plate of the existing concrete column of the existing platform. The operating platform is mounted on the first support frame; A slide beam, the length of which is set along the jacking direction, is provided with a slide rail with the same direction as the jacking direction, and a sliding cylinder is provided on the slide rail; The temporary support frame for the guide beam includes a second support frame, a lifting cylinder, and a correction device, wherein: The second support frame, the slide beam and the slide pass through the bottom of the second support frame; A lifting cylinder is mounted on the second support frame. The distance the cylinder rod of the lifting cylinder extends is determined according to the deformation of the guide beam, and it is used to lift the guide beam upward. A correction device, installed on the second support frame, is used to correct the pushing direction of the guide beam.

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