Vault structure of metro large-span column-free station hall layer node transfer station

Abstract

The invention discloses an arch crown structure of a metro large-span column-free station hall layer node transfer station, which comprises a truss structure, the truss structure is continuously and uniformly arranged on a bracket provided with a side wall along the longitudinal direction of a metro station large-span column-free station hall, and the truss structure is rigidly connected with an arch top plate and is used for balancing the horizontal thrust of an arch foot. The truss structure integrating the pipeline supporting and hanging function and the function of pouring the concrete steel formwork on the arched top plate is arranged, and the problems that in traditional design, the clear height of a building is insufficient, pipeline construction is complex, and arched top plate high formwork construction is complex are solved. The truss structure disperses the horizontal thrust through the internal triangular stabilizing units, the anti-seismic performance is improved, meanwhile, collaborative optimization of the structure and functions is achieved, and remarkable economic and engineering application value is achieved. The column-free station structure is simple in structure, reasonable in stress, convenient to construct and good in anti-seismic property, the building function and the attractive effect in a column-free station can be effectively improved, and the column-free station structure can adapt to complex stress under the asymmetric boundary condition.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit engineering design and construction, and in particular to an arch structure of a large-span column-free station hall-level node transfer station in a subway. Background Art

[0002] In recent years, column-free large-span subway stations have become the mainstream design due to their advantages such as clear vision and high space utilization. Traditional column-free station hall node transfer stations use a reinforced concrete structure with an arched top plate combined with horizontal tension plates to balance the horizontal thrust of the arch foot and enhance the overall seismic performance. Figure 1 、 Figure 2 However, the presence of horizontal slabs significantly reduces the net height of the station hall, affecting the presentation of the dome architectural effect. In addition, the slab structure requires additional space and cannot meet the requirements of modern subway stations for the integration of aesthetics and functionality.

[0003] Furthermore, subway stations require the integration of numerous plumbing, water, and electrical pipelines. Traditional designs require separate support and hanger systems, complicating construction and increasing costs. Furthermore, pouring the concrete for the arched roof requires specialized arched formwork, while steel formwork effectively reduces construction complexity. Therefore, an innovative solution is urgently needed that eliminates horizontal tie plates to optimize building space while also replacing their structural functions, integrating pipeline support, and facilitating construction. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a large-span, column-free arch structure for a subway concourse-level node transfer station. By setting up a truss structure, the stress problem of the transfer node structure under asymmetric boundary conditions is solved, while improving the architectural aesthetics and functional integration.

[0005] The present invention achieves this object through the following technical solutions:

[0006] A vault structure for a node transfer station at a large-span, column-free station hall level in a subway station comprises a truss structure, wherein the truss structure is continuously and evenly arranged on a corbel provided with a side wall along the longitudinal direction of the large-span, column-free station hall of the subway station and is rigidly connected to the corbel, wherein the truss structure comprises an upper chord, a lower chord, a diagonal web and a vertical web, wherein a plurality of triangular stabilizing units are formed between the upper chord and the lower chord by the diagonal web and the vertical web to disperse horizontal thrust, wherein the truss structure is rigidly connected to an arched top plate, and the arched top plate and the side wall are integrally cast.

[0007] Furthermore, the truss structure adopts a steel section or a steel section-concrete composite structure.

[0008] Furthermore, the truss structure is constructed before the arched top plate in the construction process. After the truss structure is erected as a whole, a layer of curved steel plates is laid on the top of the truss structure. The curved steel plates also serve as steel templates when pouring concrete for the arched top plate.

[0009] Furthermore, the upper chord of the truss structure is welded to the arc-shaped steel plate, anchor nails are provided on the arc-shaped steel plate, and the anchor nails are welded to the stress-bearing steel bars of the arched top plate.

[0010] Furthermore, an embedded steel plate is provided at the connection node between the corbel and the truss structure, and the arch foot of the truss structure is rigidly connected to the embedded steel plate at the node of the corbel by high-strength bolts.

[0011] Furthermore, the truss structure is prefabricated in a modular manner.

[0012] Furthermore, stiffening ribs are provided at the nodes of the truss structure.

[0013] Furthermore, the upper chord and / or lower chord of the truss is provided with an interface for standardized pipelines of wind, water and electricity, and also serves as a support and hanger for the standardized pipelines of wind, water and electricity.

[0014] Furthermore, the side wall is divided into several areas for opening up as required.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Improved architectural aesthetics: After the horizontal pull-plates were removed, the net height of the station hall increased significantly, and the dome became more visually transparent, meeting the aesthetic requirements of modern stations.

[0017] 2. Structural performance optimization: The truss structure disperses horizontal thrust through triangular stabilizing units, has better seismic performance than traditional tension plates, and can adapt to complex forces under asymmetric boundary conditions.

[0018] 3. Cost saving: The integrated pipeline support and hanging function reduces the workload of independent support and hanger engineering, and reduces material and construction costs by about 20%-30%.

[0019] 4. Convenient construction: The trusses are prefabricated in modular form, with high on-site assembly efficiency, shortening the construction period by more than 15%.

[0020] In summary, the present invention provides a large-span column-free station hall node transfer station arch structure, which solves the problems of insufficient building net height, pipeline construction, and complex high formwork of the arch top plate in the traditional design by setting a truss structure with integrated pipeline support and suspension function. It can not only effectively eliminate the negative impact of the horizontal pull plate on the station hall net height and architectural aesthetics, but also ensure that under asymmetric boundary conditions and earthquake conditions, the horizontal thrust of the arch top plate is effectively balanced to ensure the overall stability of the structure; the truss structure disperses the horizontal thrust through triangular stabilizing units to improve the seismic performance, while achieving coordinated optimization of structure and function, and can also achieve integrated support for wind, water and electricity pipelines, reducing construction costs and complexity, and has significant economic and engineering application value. The present invention has a simple structure, reasonable force, convenient construction, and good seismic performance. It can not only effectively improve the architectural function and aesthetic effect of the column-free station, but also adapt to the complex force of the column-free station structure under asymmetric boundary conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the arch structure of the existing subway large-span column-free station hall level node transfer station;

[0022] Figure 2 This is a top view of the arch structure of the existing subway large-span column-free station hall node transfer station;

[0023] Figure 3 This is a schematic diagram of the arch structure of a large-span, column-free subway concourse-level node transfer station according to the present invention;

[0024] Figure 4 This is a top view of the arch structure of the large-span column-free subway concourse level node transfer station of the present invention;

[0025] Figure 5 for Figure 3 A schematic diagram of the structure at point a in the middle;

[0026] Figure 6 This is a rendering of the arch structure of the large-span column-free subway concourse-level node transfer station of the present invention.

[0027] Reference numerals in the figure: 1-arched top plate, 2-horizontal pull plate, 3-side wall, 4-truss structure, 5-corbel, 6-standardized pipeline, 7-arc steel plate, 8-anchor nail, 9-stressed steel bar, 10-stiffening rib. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present invention and the features within the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0029] like Figures 3 to 6 As shown, the present invention discloses an embodiment of an arch structure for a large-span, column-free subway concourse-level node transfer station. The arched roof 1 and side walls 3 are cast integrally. A continuous truss structure 4 is provided below the arched roof 1. The truss structure consists of an upper chord, a lower chord, diagonal webs, and vertical webs. The truss structure 4 is constructed of section steel or a steel-concrete composite structure and is evenly arranged along the longitudinal direction of the station. The truss structure 4 is mounted on a corbel 5 located on the side walls 3 and is rigidly connected to the arched roof 1 and the corbel 5. The truss structure 4 forms a number of triangular stabilizing units between the upper and lower chords through diagonal webs and vertical webs, effectively transmitting the horizontal thrust of the arch foot and enhancing lateral rigidity.

[0030] An embedded steel plate is provided at the connection node between the corbel 5 and the arch foot of the truss structure 4. The arch foot of the truss structure 4 is rigidly connected to the embedded steel plate at the node of the corbel 5 through high-strength bolts.

[0031] Truss structure 4 is constructed prior to arched roof slab 1. After the entire truss structure 4 is erected, a layer of curved steel plates 7 is laid across its top. These also serve as steel formwork for the concrete pouring of arched roof slab 1. The upper chord of truss structure 4 is welded to curved steel plates 7, which are then anchored with anchors 8. These anchors 8 are welded to the tension-bearing steel bars 9 of arched roof slab 1, ensuring coordinated deformation with the arched roof slab 1. Stiffening ribs 10 are installed at the truss nodes where the diagonal and vertical webs of truss structure 4 connect to the upper and lower chords to enhance local shear and bending resistance.

[0032] The side wall 2 can be opened up in several areas as needed.

[0033] The technical solution of this invention incorporates a functionally integrated design: the upper and lower chords of the truss structure 4 are equipped with interfaces for standardized plumbing, water, and electricity pipelines 6, which also serve as supports and hangers for these pipelines. These pipelines are routed along the upper and lower chords of the truss, utilizing the gaps between the truss webs for routing, thus reducing space usage. Furthermore, the truss structure 4 is constructed prior to the arched roof slab 1. After the overall erection is complete, a layer of curved steel plates 7 is laid across the structure, which also serves as steel formwork for the concrete pouring of the arched roof slab 1, effectively reducing construction complexity.

[0034] The present invention has been described in detail above through the embodiments, but the contents described are only exemplary embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. The scope of protection of the present invention is defined by the claims. Any use of the technical solution described in the present invention, or any person skilled in the art who, inspired by the technical solution of the present invention, designs a similar technical solution within the essence and scope of protection of the present invention to achieve the above-mentioned technical effects, or any equivalent changes and improvements made to the scope of application, shall still fall within the scope of protection covered by the patent of the present invention. It should be noted that for the sake of clarity, the description of some components and processes that have no direct and obvious connection with the scope of protection of the present invention but are known to those skilled in the art are omitted in the description of the present invention.

Claims

1. A vault structure for a large-span, column-free subway concourse-level node transfer station, characterized in that: It includes a truss structure, which is continuously and evenly arranged on the corbels with side walls along the longitudinal direction of the large-span column-free station hall of the subway station and rigidly connected to the corbels. The truss structure consists of an upper chord, a lower chord, a diagonal web and a vertical web. The diagonal web and the vertical web form multiple triangular stabilizing units between the upper chord and the lower chord to disperse horizontal thrust. The truss structure is rigidly connected to the arched top plate, and the arched top plate and the side walls are cast in an integral manner.

2. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 1 is characterized in that: The truss structure adopts a steel section or a steel section-concrete composite structure.

3. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 2 is characterized in that: The truss structure is constructed before the arched top plate in the construction process. After the truss structure is erected as a whole, a layer of curved steel plates is laid on the top of the truss structure. The curved steel plates also serve as steel templates when pouring concrete for the arched top plate.

4. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 3 is characterized in that: The upper chord of the truss structure is welded to the arc-shaped steel plate, anchor nails are arranged on the arc-shaped steel plate, and the anchor nails are welded to the stress-bearing steel bars of the arched top plate.

5. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 1 is characterized in that: An embedded steel plate is provided at the connection node between the corbel and the truss structure, and the arch foot of the truss structure is rigidly connected to the embedded steel plate at the node of the corbel by high-strength bolts.

6. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 1 is characterized in that: The truss structure is prefabricated in a modular manner.

7. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 1 is characterized in that: Stiffening ribs are provided at the nodes of the truss structure.

8. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 1 is characterized in that: The upper chord and / or lower chord of the truss is provided with an interface for the standardized pipelines of wind, water and electricity, and also serves as a support and hanger for the standardized pipelines of wind, water and electricity.

9. The vault structure of a large-span column-free subway concourse-level node transfer station according to claim 1 is characterized in that: The side wall is opened up in several areas according to needs.

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