Large-span station structure and subway transfer node system

Abstract

The present invention discloses a large-span station structure and a subway transfer node system. The layer plate assembly includes a top plate, a middle plate and a bottom plate. The middle plate is arranged between the top plate and the bottom plate. The middle plate is spaced apart from the top plate and the bottom plate. The middle plate has at least two layers. Two adjacent middle plates are spaced apart. The middle part of the top plate is convexly arranged away from the middle plate to form a top span. There are at least two side walls, wherein the two side walls are respectively located on both sides of the layer plate assembly and are respectively connected to the two ends of the top plate and the two ends of the middle plate. There are two support columns, which pass through the middle plate and are connected to the top plate and the bottom plate. The two support columns are located between the two side walls, and the two support columns are located on both sides of the top span. The support columns are steel concrete columns, and the top plate and the middle plate are both provided with steel concrete beams connected to the steel concrete columns. The steel concrete beams and steel concrete columns have greater strength, better support effect on the layer plate assembly, and can be subjected to forces in multiple directions, which can meet the force requirements of large-span stations.

Description

Technical Field

[0001] The invention relates to the technical field of transportation construction, and in particular to a large-span station structure and a subway transfer node system. Background Art

[0002] The purpose of building a rail transit network is to ensure smooth and fast travel for citizens and provide passengers with a safe, convenient and comfortable environment. With the continuous expansion of urban transportation networks, the status of transfer stations has become increasingly prominent and has become a major factor affecting rail transit efficiency and service levels.

[0003] With the continuous development of urban rail transit, people's requirements for the experience and feelings of subway stations are constantly increasing. Therefore, the requirements for various aspects such as the station space span are also constantly increasing. As the span continues to increase, the requirements for design are also correspondingly increased, especially in terms of structural force, in order to meet the structural strength requirements.

[0004] As the span of stations continues to increase, column-free stations have also emerged. Since there are no structural frame columns in the middle of column-free stations, the overall station space feels larger; as the number of column-free stations continues to increase, the number of stations that adopt a column-free structure and are used for two-line transfers is very small. Since transfer stations adopt a column-free structure, the span of the transfer node area of ​​the station is relatively large, with a span of 20 to 30 meters.

[0005] Conventional column-free stations use a structure in which the top, middle, bottom and side walls are all made of thick plates, or the bottom plate uses a structure in which a thin plate and pull-out piles are combined. This structure is only capable of bearing force in one direction and is obviously not applicable to column-free transfer node structures and cannot meet the station's force requirements. Summary of the invention

[0006] Based on this, the present invention aims to overcome the problems existing in the prior art and provide a large-span station structure and a subway transfer node system that can meet the force requirements.

[0007] The technical solution is as follows:

[0008] A long-span site structure, comprising:

[0009] A layer plate assembly, the layer plate assembly comprises a top plate, a middle plate and a bottom plate, the middle plate is arranged between the top plate and the bottom plate, the middle plate is spaced apart from the top plate and the bottom plate, the middle plate has at least two layers, two adjacent middle plates are spaced apart, and the middle portion of the top plate is convex in a direction away from the middle plate to form a top span portion;

[0010] Side walls, there are at least two side walls, wherein the two side walls are respectively located on both sides of the layer plate assembly and are respectively connected to both ends of the top plate and both ends of the middle plate; and

[0011] Support columns, there are two support columns, the two support columns pass through the middle plate and are connected to the top plate and the bottom plate, the two support columns are located between the two side walls, and the two support columns are located on both sides of the top span,

[0012] Wherein, the support column is a steel concrete column, and the top plate and the middle plate are both provided with steel concrete beams connected to the steel concrete column.

[0013] In the above-mentioned large-span site structure, an internal space of the site is formed between the top plate and the middle plate, between the middle plate and the bottom plate, or between adjacent middle plates. The support columns are used to support the layer plate components. The top span formed by the middle part of the top plate protruding away from the middle plate can have a stronger supporting effect. At the same time, two support columns are located on both sides of the top span and between the two side walls. At this time, there are no other columns between the two support columns, so a column-free space can be formed, which increases the space inside the site. Since the support columns are steel-concrete columns, and steel-concrete beams connected to the steel-concrete columns are provided on the top plate and the middle plate, compared with the traditional thick plate structure, the steel-concrete beams and steel-concrete columns are stronger and have a better supporting effect on the layer plate components. At the same time, they can bear forces in multiple directions and can meet the force requirements of large-span sites.

[0014] In one embodiment, a first middle piece and a first peripheral piece arranged around the first middle piece are provided in the support column, the first middle piece is a cross-shaped steel, the first peripheral piece includes longitudinal steel bars and first stirrups, the longitudinal steel bars are multiple and arranged around the first middle piece, the first stirrups are multiple, the first stirrups are arranged around the first middle piece and connected to all the longitudinal steel bars, and the first stirrups are connected to the first middle piece.

[0015] In one embodiment, the steel concrete beam is provided with a second middle piece and a second outer piece arranged around the second middle piece, the second middle piece is an I-beam, the second outer piece includes transverse steel bars and second stirrups, the transverse steel bars are multiple and arranged around the second middle piece, the second stirrups are multiple, the second stirrups are arranged around the second middle piece and connected to all the transverse steel bars, and bolts are provided on the top surface and inner side surface of the second middle piece.

[0016] In one embodiment, the steel concrete beam on the top plate is a first steel concrete beam, and the portion of the first steel concrete beam used to connect with the support column is a first connecting portion. In the first connecting portion, the first outer member extends into the second outer member and is located on both sides of the second middle member, and the first middle member extends into the second outer member and is connected to the lower side of the second middle member.

[0017] In one embodiment, in the first connecting portion, a connecting steel plate and a cross flange are further provided between the first middle piece and the second middle piece, the connecting steel plate is provided on the side of the cross flange away from the second middle piece, the cross flange and the first middle piece are provided on both sides of the connecting steel plate correspondingly, first stiffening ribs are provided on both sides of the second middle piece in the first connecting portion, and the first stiffening ribs are provided correspondingly to the cross flange.

[0018] In one embodiment, the steel concrete beam on the middle plate is a second steel concrete beam, and the portion of the second steel concrete beam used to connect with the support column is a second connecting portion. In the second connecting portion, the first middle piece passes through the second middle piece, and the transverse steel bars are partially passed through the first middle piece. Corbels are provided on both sides of the first middle piece, and part of the transverse steel bars are welded to the corbels, and second stiffening ribs are provided in the first middle piece.

[0019] In one embodiment, the top span portion includes a first folding plate, a flat plate and a second folding plate connected in sequence, the first folding plate and the second folding plate are arranged on both sides of the flat plate, the first folding plate is arranged at an angle to the flat plate, and the second folding plate is arranged at an angle to the flat plate.

[0020] In one of the embodiments, two ends of one of the steel concrete beams are respectively connected to two of the support columns.

[0021] In one embodiment, the above-mentioned large-span site structure also includes an outer wall, and there are two middle plates, which are respectively a negative first floor middle plate and a negative second floor middle plate. The negative second floor middle plate is arranged on the side of the negative first floor middle plate away from the top plate, and the outer wall is used to connect the negative second floor middle plate and the bottom plate. There are at least two outer walls, two of which are located on both sides of the bottom plate, and the supporting column is partially located inside the outer wall.

[0022] A subway transfer node system comprises a large-span station structure as described in any one of the above items, wherein the layer plate assembly is arranged underground, and a transfer space is enclosed between the bottom plate and the middle plate located at the lowest layer, and at least two lanes are arranged in the transfer space.

[0023] In the above-mentioned subway transfer node system, an internal space of the station is formed between the top plate and the middle plate, between the middle plate and the bottom plate, or between adjacent middle plates, and the support columns are used to support the layer plate components. The top span formed by the middle part of the top plate protruding away from the middle plate can have a stronger supporting effect. At the same time, two support columns are located on both sides of the top span and between the two side walls. At this time, there are no other columns between the two support columns, so a column-free space can be formed, which increases the space inside the station. Since the support columns are steel-concrete columns, and steel-concrete beams connected to the steel-concrete columns are provided on the top plate and the middle plate, compared with the traditional thick plate structure, the steel-concrete beams and steel-concrete columns are stronger, have a better supporting effect on the layer plate components, and can be subjected to multi-directional forces. Therefore, they can meet the force requirements of the subway transfer node system with multiple lanes, filling the gap in the structural design of the subway transfer node system with multiple lanes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic structural diagram of a cross section of a large-span site structure according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the coordination between the first type of reinforced concrete beam and the support column according to an embodiment of the present invention;

[0028] Figure 3 for Figure 2 Middle AA section view;

[0029] Figure 4 for Figure 2 Middle BB section view;

[0030] Figure 5 for Figure 2 Middle CC section view;

[0031] Figure 6 This is a schematic diagram of the cooperation between the second type of reinforced concrete beam and the support column according to an embodiment of the present invention;

[0032] Figure 7 for Figure 6 Middle DD section view;

[0033] Figure 8 for Figure 6 EE section view.

[0034] Description of reference numerals:

[0035] 100, layer plate assembly; 110, top plate; 110a, top span; 111, first folded plate; 112, flat plate; 113, second folded plate; 120, middle plate; 120a, negative first layer middle plate; 120b, negative second layer middle plate; 130, bottom plate; 131, bottom beam; 132, pull-out pile; 200, side wall; 300, support column; 310, first middle piece; 320, first peripheral piece; 321, longitudinal reinforcement; 322, first stirrup; 400, steel concrete beam; 410, second Middle piece; 411, bolt; 420, second outer piece; 421, transverse reinforcement; 422, second stirrup; 430, first type steel concrete beam; 431, first connection; 432, connecting steel plate; 433, cross flange; 434, first stiffener; 440, second type steel concrete beam; 441, second connection; 442, corbel; 443, second stiffener; 500, exterior wall; 600, transfer platform plate; 601, first channel; 602, second channel; 610, partition. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] like Figures 1 to 4As shown, an embodiment discloses a large-span site structure, including a layer plate assembly 100, a side wall 200 and a support column 300, the layer plate assembly 100 includes a top plate 110, a middle plate 120 and a bottom plate 130, the middle plate 120 is arranged between the top plate 110 and the bottom plate 130, the middle plate 120 and the top plate 110 and the bottom plate 130 are arranged at intervals, the middle plate 120 has at least two layers, and the adjacent two middle plates 120 are arranged at intervals, the middle part of the top plate 110 is convex in the direction away from the middle plate 120 to form a top span part 110a, the side wall 200 is to At least two, wherein the two side walls 200 are respectively located on both sides of the layer plate assembly 100, and are respectively connected to the two ends of the top plate 110 and the two ends of the middle plate 120, there are two support columns 300, the two support columns 300 pass through the middle plate 120 and are connected to the top plate 110 and the bottom plate 130, the two support columns 300 are located between the two side walls 200, and the two support columns 300 are located on both sides of the top span 110a, wherein the support columns 300 are steel concrete columns, and the top plate 110 and the middle plate 120 are both provided with steel concrete beams 400 connected to the steel concrete columns.

[0038] In the above-mentioned large-span site structure, an internal space of the site is formed between the top plate 110 and the middle plate 120, between the middle plate 120 and the bottom plate 130, or between adjacent middle plates 120. The support columns 300 are used to support the layer plate assembly 100. The top span 110a formed by the protrusion in the middle part of the top plate 110 away from the middle plate 120 can have a stronger supporting effect. At the same time, the two support columns 300 are located on both sides of the top span 110a and between the two side walls 200. At this time, there are no other columns between the two support columns 300, so a column-free space can be formed, which increases the space inside the site. Since the support columns 300 are steel concrete columns, and steel concrete beams 400 connected to the steel concrete columns are provided on the top plate 110 and the middle plate 120, compared with the traditional thick plate structure, the steel concrete beams 400 and the steel concrete columns are stronger, and the supporting effect on the layer plate assembly 100 is better. At the same time, they can bear forces in multiple directions, which can meet the force requirements of large-span sites.

[0039] In one embodiment, if Figure 3 As shown, the support column 300 is provided with a first middle piece 310 and a first peripheral piece 320 arranged around the first middle piece 310. The first middle piece 310 is a cross-shaped steel. The first peripheral piece 320 includes a longitudinal steel bar 321 and a first stirrup 322. There are multiple longitudinal steel bars 321 arranged around the first middle piece 310. There are multiple first stirrups 322. The first stirrups 322 are arranged around the first middle piece 310 and connected to all the longitudinal steel bars 321. The first stirrups 322 are connected to the first middle piece 310. The use of steel in the support column 300 can effectively improve the bearing capacity of the component and reduce the axial compression ratio of the component, so that the support column 300 has the advantages of high strength, small cross-sectional size of the component, strong bond strength with concrete, saving concrete, and increasing the use space.

[0040] In one embodiment, if Figure 4 As shown, a second middle piece 410 and a second peripheral piece 420 arranged around the second middle piece 410 are provided in the steel concrete beam 400. The second middle piece 410 is an I-shaped steel. The second peripheral piece 420 includes a transverse steel bar 421 and a second stirrup 422. The transverse steel bar 421 is multiple and arranged around the second middle piece 410. The second stirrup 422 is multiple and arranged around the second middle piece 410. The second stirrup 422 is arranged around the second middle piece 410 and connected to all the transverse steel bars 421. The top surface and the inner side surface of the second middle piece 410 are provided with studs 411. The steel concrete beam 400 has the advantages of large increase in bearing capacity and stiffness, convenient construction, etc. The studs 411 can increase the connection strength between the I-shaped steel and concrete, and improve the overall force performance of the steel concrete beam 400.

[0041] In one embodiment, if Figure 1 and Figure 2 As shown, the steel concrete beam 400 on the top plate 110 is a first steel concrete beam 430, and the portion of the first steel concrete beam 430 used for connecting with the support column 300 is a first connecting portion 431. In the first connecting portion 431, the first outer member 320 extends into the second outer member 420 and is located on both sides of the second middle member 410, and the first middle member 310 extends into the second outer member 420 and is connected to the lower side of the second middle member 410. The support column 300 does not need to pass through the steel concrete beam 400 on the top plate 110, and mainly provides support for the top plate 110. Therefore, the first middle piece 310 extends into the second outer piece 420 and is connected to the lower side of the second middle piece 410. At the same time, the first outer piece 320 extends into the second outer piece 420 and is located on both sides of the second middle piece 410. When pouring concrete, the first outer piece 320 and the second outer piece 420 can be wrapped in the first connecting part 431, and part of the first middle piece 310 is located in the first connecting part 431, so that the connection node structure of the support column 300 and the steel concrete beam 400 is more stable and has a stronger bearing capacity.

[0042] In one embodiment, if Figure 1 , Figure 2 and Figure 5As shown, in the first connection part 431, a connecting steel plate 432 and a cross flange 433 are further provided between the first middle piece 310 and the second middle piece 410. The connecting steel plate 432 is provided on the side of the cross flange 433 away from the second middle piece 410. The cross flange 433 and the first middle piece 310 are provided on both sides of the connecting steel plate 432 correspondingly. Both sides of the second middle piece 410 in the first connection part 431 are provided with first stiffening ribs 434, and the first stiffening ribs 434 are provided correspondingly to the cross flange 433. By using the connecting steel plate 432 and the cross flange 433, the first middle piece 310 and the second middle piece 410 can be connected in the first connection part 431, and the first middle piece 310 and the second middle piece 410 are not in direct contact, thereby improving the connection strength and preventing the first middle piece 310 and the second middle piece 410 from being deformed or damaged due to direct contact.

[0043] In one embodiment, if Figure 1 , Figures 6 to 8 As shown, the steel concrete beam 400 on the middle plate 120 is a second steel concrete beam 440, and the part of the second steel concrete beam 440 used for connecting with the support column 300 is a second connection part 441. In the second connection part 441, the first middle piece 310 passes through the second middle piece 410, and the transverse reinforcement 421 partially passes through the first middle piece 310. The first middle piece 310 is provided with a bracket 442 on both sides, and part of the transverse reinforcement 421 is welded to the bracket 442. A second stiffening rib 443 is provided in the first middle piece 310. The bracket 442 can make the connection strength between the steel concrete beam 400 and the support column 300 higher, and at the same time make the force of the support column 300 at the second connection part 441 more balanced.

[0044] Specifically, the corbel 442 is a plate, and both sides of the corbel 442 are welded with transverse steel bars 421 .

[0045] In one embodiment, if Figure 1 As shown, the top span 110a includes a first folded plate 111, a flat plate 112 and a second folded plate 113 connected in sequence, the first folded plate 111 and the second folded plate 113 are arranged on both sides of the flat plate 112, the first folded plate 111 is arranged at an angle with the flat plate 112, and the second folded plate 113 is arranged at an angle with the flat plate 112. When the floor assembly 100 is located underground, the above structure of the top span 110a can provide greater support force, increase the floor height, and improve the internal space.

[0046] In one embodiment, if Figures 1 to 4As shown, the two ends of a steel concrete beam 400 are respectively connected to two support columns 300. Since the steel concrete beam 400 and the steel concrete column have higher bearing capacity and more stable structure, by connecting the two ends of a steel concrete beam 400 to the two support columns 300, the node stability of the connection between the support column 300 and the floor plate assembly 100 inside the large-span station structure can be made stronger, and at the same time, the impact of the beam-column structure on the station space can be reduced, and the difficulty of on-site construction can be reduced.

[0047] In one embodiment, if Figure 1 As shown, the above-mentioned large-span site structure also includes an outer wall 500, and there are two middle plates 120, the two middle plates 120 are respectively the negative first floor middle plate 120a and the negative second floor middle plate 120b, the negative second floor middle plate 120b is arranged on the side of the negative first floor middle plate 120a away from the top plate 110, and the outer wall 500 is used to connect the negative second floor middle plate 120b and the bottom plate 130, and there are at least two outer walls 500, wherein the two outer walls 500 are located on both sides of the bottom plate 130, and the support column 300 is partially located in the outer wall 500. The distance between the two outer walls 500 is smaller than the distance between the two side walls 200, and the support column 300 is partially located in the outer wall 500, which can improve the strength of the outer wall 500.

[0048] Alternatively, if Figure 1 As shown, a bottom beam 131 and anti-pulling piles 132 connected to the bottom beam 131 are provided on the bottom plate 130 , which can improve the strength of the bottom plate 130 and prevent the bottom plate 130 from displacement.

[0049] like Figure 1 As shown, an embodiment of a subway transfer node system includes a large-span station structure as in any of the above embodiments, wherein the layer plate assembly 100 is arranged underground, and a transfer space is enclosed between the bottom plate 130 and the middle plate 120 located at the lowest layer, and at least two lanes are arranged in the transfer space.

[0050] In the above-mentioned subway transfer node system, the station internal space is formed between the top plate 110 and the middle plate 120, between the middle plate 120 and the bottom plate 130, or between adjacent middle plates 120. The support column 300 is used to support the layer plate assembly 100. The top span 110a formed by the middle part of the top plate 110 protruding away from the middle plate 120 can have a stronger supporting effect. At the same time, the two support columns 300 are located on both sides of the top span 110a and between the two side walls 200. At this time, there is no other space between the two support columns 300. Other columns can form a column-free space, which increases the space inside the station. Since the supporting columns 300 are steel concrete columns, and the top plate 110 and the middle plate 120 are both provided with steel concrete beams 400 connected to the steel concrete columns, compared with the traditional thick plate structure, the steel concrete beams 400 and the steel concrete columns are stronger, and have a better supporting effect on the layer plate assembly 100. At the same time, they can bear forces in multiple directions, so they can meet the force requirements of a subway transfer node system with multiple lanes, filling the gap in the structural design of a subway transfer node system with multiple lanes.

[0051] Alternatively, if Figure 1 As shown, a transfer platform 600 is provided in the transfer space, the transfer platform 600 is connected to the two exterior walls 500, the transfer platform 600 and the bottom plate 130 and the middle plate 120 located at the lowest layer are all spaced apart, a partition 610 is provided between the transfer platform 600 and the bottom plate 130, the partition 610 divides the space between the transfer platform 600 and the bottom plate 130 into a first channel 601 and a second channel 602, the first channel 601 and the second channel 602 are respectively located on both sides of the partition 610, and lanes are provided in the first channel 601 and the second channel 602.

[0052] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A large-span site structure, characterized in that: include: A layer plate assembly, the layer plate assembly comprises a top plate, a middle plate and a bottom plate, the middle plate is arranged between the top plate and the bottom plate, the middle plate is spaced apart from the top plate and the bottom plate, the middle plate has at least two layers, two adjacent middle plates are spaced apart, and the middle portion of the top plate is convex in a direction away from the middle plate to form a top span portion; Side walls, there are at least two side walls, wherein the two side walls are respectively located on both sides of the layer plate assembly and are respectively connected to both ends of the top plate and both ends of the middle plate; and Support columns, there are two support columns, the two support columns pass through the middle plate and are connected to the top plate and the bottom plate, the two support columns are located between the two side walls, and the two support columns are located on both sides of the top span, Wherein, the support column is a steel concrete column, and the top plate and the middle plate are both provided with a steel concrete beam connected to the steel concrete column; A first middle piece and a first peripheral piece arranged around the first middle piece are provided in the support column, the first middle piece is a cross-shaped steel, the first peripheral piece includes a longitudinal steel bar and a first stirrup, the longitudinal steel bar is a plurality and arranged around the first middle piece, the first stirrup is a plurality, the first stirrup is arranged around the first middle piece and connected to all the longitudinal steel bars, and the first stirrup is connected to the first middle piece; The steel concrete beam is provided with a second middle member and a second peripheral member arranged around the second middle member, the second middle member is an I-shaped steel, the second peripheral member includes a transverse steel bar and a second stirrup, the transverse steel bar is a plurality and arranged around the second middle member, the second stirrup is a plurality, the second stirrup is arranged around the second middle member and connected to all the transverse steel bars, and bolts are provided on the top surface and inner side surface of the second middle member; The steel concrete beam on the top plate is a first steel concrete beam, the portion of the first steel concrete beam used for connecting with the support column is a first connecting portion, in the first connecting portion, the first peripheral member extends into the second peripheral member and is located on both sides of the second middle member, the first middle member extends into the second peripheral member and is connected to the lower side of the second middle member; The steel concrete beam on the middle plate is a second steel concrete beam, and the part of the second steel concrete beam used for connecting with the support column is a second connecting part. In the second connecting part, the first middle piece passes through the second middle piece, and the transverse steel bars are partially passed through the first middle piece. Corbels are provided on both sides of the first middle piece, and part of the transverse steel bars are welded to the corbels, and second stiffening bars are provided in the first middle piece.

2. The long-span site structure according to claim 1, characterized in that: In the first connecting portion, a connecting steel plate and a cross flange are further provided between the first middle piece and the second middle piece. The connecting steel plate is provided on the side of the cross flange away from the second middle piece. The cross flange and the first middle piece are provided on both sides of the connecting steel plate correspondingly. First stiffening ribs are provided on both sides of the second middle piece in the first connecting portion. The first stiffening ribs are provided correspondingly to the cross flange.

3. The long-span site structure according to any one of claims 1-2, characterized in that: The top span portion includes a first folding plate, a flat plate and a second folding plate which are connected in sequence. The first folding plate and the second folding plate are arranged on both sides of the flat plate. The first folding plate is arranged at an angle to the flat plate, and the second folding plate is arranged at an angle to the flat plate.

4. The long-span site structure according to any one of claims 1-2, characterized in that: The two ends of one of the steel concrete beams are respectively connected to the two support columns.

5. The long-span site structure according to any one of claims 1-2, characterized in that: It also includes an outer wall, wherein there are two middle plates, which are respectively a negative first floor middle plate and a negative second floor middle plate, and the negative second floor middle plate is arranged on the side of the negative first floor middle plate away from the top plate, and the outer wall is used to connect the negative second floor middle plate and the bottom plate, and there are at least two outer walls, two of which are located on both sides of the bottom plate, and the supporting column is partially located inside the outer wall.

6. A subway transfer node system, characterized in that: It comprises the long-span station structure as described in any one of claims 1 to 5, wherein the layer plate assembly is arranged underground, and a transfer space is enclosed between the bottom plate and the middle plate located at the lowest layer, and at least two lanes are arranged in the transfer space.

Images