Underpinning structure and subway station

By designing the support structure in the subway station and using the combination of support beams and support walls, the limit invasion problem caused by inconsistent column layout and excessive cross-section of the subway station is solved, and effective load transmission and structural safety are achieved. Sex and reasonable size.

CN222252207UActive Publication Date: 2024-12-27GUANGDONG HEAVY IND CONSTR DESIGN INST
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Patent Information

Application Number
CN202420522578.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-18
Publication Date
2024-12-27
Estimated Expiration
2034-03-18

AI Technical Summary

Technical Problem

In subway stations with multiple lines and multiple cross-over lines, the structural columns of the subway station are not uniformly arranged with the structural columns of the upper building, which leads to difficulty in load transfer, and increasing the structural cross-sectional dimensions to enhance load bearing capacity. This causes the problem of invasion of the platform layer structure.

Method used

A support structure is designed, including a first structural column, a support beam, a second structural column and a support wall. The load of the first structural column is transferred to the second structural column through the support beam, and the support wall is passed through the support wall. High strength and small thickness reduce the cross-sectional size of the support structure, and solve the problems of structural column misalignment and excessive cross-sectional invasion.

Benefits of technology

It effectively solves the problem of the non-correlation between the subway station and the structural columns of the above building in the vertical direction, and on the premise of ensuring structural safety, the cross-sectional size of the subway station structural columns is reduced, avoiding the invasion of the platform layer structure.

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Abstract

The utility model relates to an underpinning structure and a subway station. The underpinning structure comprises a first structural column, an underpinning beam, a second structural column and an underpinning wall. The first structural columns are used for supporting an upper building. The underpinning beam is connected with one end of the first structural column. The second structural column is located on the side, away from the first structural column, of the underpinning beam, one end of the second structural column is connected with the underpinning beam, and the other end is connected with one end of the underpinning wall. The structural strength of the underpinning wall is larger than that of the second structural column, and the thickness of the underpinning wall is smaller than the sectional dimension of the second structural column in the thickness direction of the underpinning wall. The first structure column and the second structure column which are arranged in a staggered mode are underpinned through the underpinning beam between the first structure column and the second structure column. The underpinning wall has the design of high structural strength and small thickness, so that the underpinning wall can support the second structural column, and the sectional dimension of the underpinning structure is reduced. Therefore, when the structure is used for the subway station, the problem of limit invasion caused by dislocation of the structural columns and large cross sections of the structural columns can be solved.
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Description

Technical Field

[0001] The present application relates to the technical field of subway engineering, and in particular to a support structure and a subway station. Background Art

[0002] With the development of rail transit, subway stations and buildings above are co-built, which has become a trend in subway station construction. Usually, there is a misalignment between the structural columns of the subway station and the structural columns of the building above, so it is necessary to set up a support structure within the subway station to transfer the load of the building above to the vertical load-bearing structure of the subway station below.

[0003] In subway stations with multiple lines transferring on the same platform and multiple crossing lines, the layout of the structural columns in the crossover area of ​​the platform layer is usually irregular. Therefore, when the structural column grid layout of the building above is inconsistent with the structural column grid position of the subway station, and the load transferred to the structure of the subway station is large, in order to meet the overall structural safety requirements, in addition to setting up a support structure to transfer the load of the building above to the vertical load-bearing structure of the subway station below, it is also necessary to increase the bearing capacity of the vertical load-bearing structure by increasing the structural cross-sectional size and improving the material strength. However, increasing the cross-sectional size of the vertical load-bearing structure of the subway station will cause the problem of structural limit intrusion at the platform layer of the subway station. Summary of the invention

[0004] Based on this, it is necessary to provide a replacement structure and a subway station to address the problem that increasing the cross-sectional size of the vertical load-bearing structure of the subway station will cause the platform layer structure to infringe the limit of the subway station.

[0005] A support structure, comprising:

[0006] A first structural column, wherein the first structural column is used to support an upper building;

[0007] an underpinning beam connected to one end of the first structural column;

[0008] a second structural column, the second structural column being located on a side of the underpinning beam away from the first structural column, and one end of the second structural column being connected to the underpinning beam;

[0009] A support wall, one end of which is connected to an end of the second structural column away from the support beam, the structural strength of the support wall is greater than the structural strength of the second structural column, and in the thickness direction of the support wall, the thickness of the support wall is less than the cross-sectional size of the second structural column.

[0010] The technical solution is further described below:

[0011] In one embodiment, the number of the second structural columns and the number of the underpinning walls are both at least two, at least two of the second structural columns are arranged on opposite sides of the extension direction of the first structural column, and the second structural columns are connected to the underpinning walls in a one-to-one correspondence.

[0012] In one embodiment, the underpinning wall is a steel plate concrete wall.

[0013] In one embodiment, H-shaped steel is provided in the underpinning beam, and / or cross-shaped steel is provided in the first structural column and the second structural column.

[0014] A subway station, comprising:

[0015] A first space layer, wherein a first top plate is provided on the top of the first space layer;

[0016] A second space layer, the second space layer is located below the first space layer; the second space layer comprises a bottom plate, the bottom plate is arranged on a side of the second space layer away from the first space layer; and,

[0017] In the underpinning structure described in any of the above items, the underpinning beam in the underpinning structure is connected to the first top plate, and the extension direction of the underpinning beam forms an angle with the track laying direction of the subway station; the first structural column is arranged on the side of the first top plate away from the second space layer; the second structural column extends along the height direction of the subway station; at least a part of the underpinning wall is arranged in the second space layer, and the end of the underpinning wall away from the second structural column is connected to the bottom plate, and the extension direction of the underpinning wall is parallel to the track laying direction of the subway station.

[0018] In one of the embodiments, the extension direction of the underpinning beam is perpendicular to the track laying direction of the subway station.

[0019] In one embodiment, the second space layer also includes a second top plate, which is arranged opposite to the bottom plate, and the second top plate is used to separate the first space layer and the second space layer; one end of the second structural column away from the underpinning beam passes through the second top plate and is connected to the underpinning wall in the second space layer.

[0020] In one embodiment, the subway station includes a third space layer, the third space layer is arranged on a side of the first space layer away from the second space layer, and at least a part of the first structural column is arranged in the first space layer.

[0021] In one embodiment, the subway station further includes a first common column, which extends along the height direction of the subway station, with one end of the first common column connected to the bottom plate and the other end passing through the first top plate; the first structural column, the second structural column and the support wall are all spaced apart from the first common column; and one end of the support beam is connected to the first common column.

[0022] In one embodiment, the subway station further includes a second common column, which extends in the height direction of the subway station, with one end of the second common column connected to the bottom plate and the other end passing through the first top plate; the second common column is connected to an end of the support beam away from the first common column; the first structural column, the second structural column and the support wall are all arranged between the first common column and the second common column, and are all spaced apart from the first common column and the second common column.

[0023] In the above-mentioned underpinning structure and subway station, the first structural column and the second structural column are arranged on opposite sides of the underpinning beam, and one end of both is connected to the underpinning beam, so the first structural column and the second structural column can be underpinned by the underpinning beam, thereby solving the problem of misalignment of the arrangement of the first structural column and the second structural column. In addition, since the structural strength of the underpinning wall is greater than the structural strength of the second structural column, and its thickness is smaller than the cross-sectional dimension of the second structural column in its thickness direction, the underpinning wall is connected to the end of the second structural column away from the underpinning beam, so that the underpinning wall can not only support the second structural column, but also reduce the cross-sectional dimension of the underpinning structure. Therefore, when the underpinning structure is applied to the subway station, and the underpinning wall is arranged at the platform level of the subway station, it can not only solve the problem of the mismatch between the structural columns of the subway station and the building above in the vertical direction, but also solve the limit encroachment problem caused by the excessive cross-sectional dimension of the structural columns of the subway station under the premise of ensuring structural safety. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0026] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0027] Figure 1 It is a structural schematic diagram of the underpinning structure in an embodiment of the present application.

[0028] Figure 2 It is a structural schematic diagram of a subway station in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100. underpinning structure; 11. first structural column; 12. underpinning beam; 13. second structural column; 14. underpinning wall; 200. subway station; 21. third space layer; 22. first space layer; 221. first top plate; 23. second space layer; 231. second top plate; 232. bottom plate; 24. first common column; 25. second common column. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application 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 application. However, the present application 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 application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0036] It should be noted that if 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. If 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. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] See also Figure 1 , Figure 1 The schematic diagram of the structure of the underpinning structure 100 in one embodiment of the present application is shown. The underpinning structure 100 provided in one embodiment of the present application includes a first structural column 11, an underpinning beam 12, a second structural column 13 and an underpinning wall 14. Among them:

[0038] like Figure 1 As shown, the first structural column 11 is used to support the building above. The underpinning beam 12 is connected to one end of the first structural column 11. The second structural column 13 is located on the side of the underpinning beam 12 away from the first structural column 11, and one end of the second structural column 13 is connected to the underpinning beam 12. One end of the underpinning wall 14 is connected to the end of the second structural column 13 away from the underpinning beam 12, the structural strength of the underpinning wall 14 is greater than the structural strength of the second structural column 13, and in the thickness direction of the underpinning wall 14, the thickness of the underpinning wall 14 is less than the cross-sectional size of the second structural column 13.

[0039] like Figure 1 As shown, the first structural column 11 and the second structural column 13 are respectively arranged on both sides of the underpinning beam 12, and the first structural column 11 and the second structural column 13 are both connected to the underpinning beam 12, so that the first structural column 11 can transfer the load to the underpinning beam 12, and the underpinning beam 12 can transfer the load to the second structural column 13. Therefore, the load of the first structural column 11 can be transferred to the second structural column 13 arranged in a vertically offset manner through the underpinning beam 12. Among them, the arrangement between the first structural column 11 and the second structural column 13 can be designed as needed, as long as the underpinning beam 12 can underpin the load of the first structural column 11 to the second structural column 13 and can meet the structural safety. For example, the first structural column 11 can be roughly located in the middle of the underpinning beam 12, and the second structural column 13 can be located at the end of the underpinning beam 12.

[0040] Optionally, the cross-sectional shapes of the first structural column 11 and the second structural column 13 can be designed as required, for example, they can be rectangular, circular, etc.

[0041] The structural strength and thickness of the underpinning wall 14 can be designed as required. As long as the thickness of the underpinning wall 14 can meet the clearance requirements of the subway train, the underpinning wall 14 has sufficient structural strength to support the second structural column 13.

[0042] In the underpinning structure 100, the first structural column 11 and the second structural column 13 are arranged on opposite sides of the underpinning beam 12, and one end of both is connected to the underpinning beam 12, so the first structural column 11 and the second structural column 13 can be underpinned by the underpinning beam 12, thereby solving the problem of misalignment between the first structural column 11 and the second structural column 13. In addition, since the structural strength of the underpinning wall 14 is greater than the structural strength of the second structural column 13, and its thickness is smaller than the cross-sectional dimension of the second structural column 13 in its thickness direction, the underpinning wall 14 is connected to the end of the second structural column 13 away from the underpinning beam 12, so that the underpinning wall 14 can not only support the second structural column 13, but also reduce the cross-sectional dimension of the underpinning structure 100. Therefore, when the underpinning structure 100 is applied in a subway station and the underpinning wall 14 is arranged at the platform level of the subway station 200, it can not only solve the problem of the vertical mismatch between the structural columns of the subway station 200 and the upper building, but also solve the limit encroachment problem caused by the excessively large cross-section of the structural columns of the subway station 200 while ensuring the structural safety.

[0043] In one embodiment, Figure 1As shown, the number of the second structural columns 13 and the number of the underpinning walls 14 are both at least two, and at least two second structural columns 13 are respectively arranged on opposite sides of the extension direction of the first structural column 11, and the second structural columns 13 are connected to the underpinning walls 14 in a one-to-one correspondence. When at least two second structural columns 13 are respectively arranged on opposite sides of the extension direction of the first structural column 11, it can better ensure that the underpinning beam 12 can underpin the load of the first structural column 11 to the second structural column 13.

[0044] In one embodiment, Figure 1 As shown, the underpinning wall 14 is a steel plate concrete wall. The steel plate concrete wall has a relatively large structural strength and can effectively support the second structural column 13.

[0045] In other embodiments, Figure 1 As shown, H-shaped steel is arranged inside the underpinning beam 12. H-shaped steel has the characteristics of high structural strength and small cross-section. Therefore, the H-shaped steel is arranged inside the underpinning beam 12 so that the underpinning beam 12 can bear a large load while optimizing the structural cross-section.

[0046] In other embodiments, it may also be: Figure 1 As shown, a cross-shaped steel is provided inside the first structural column 11 and the second structural column 13. The cross-shaped steel can improve the structural strength of the first structural column 11 and the second structure.

[0047] In other embodiments, it may also be: Figure 1 As shown, an H-shaped steel is provided in the underpinning beam 12. A cross-shaped steel is provided in the first structural column 11 and the second structural column 13. The cross-shaped steel is provided in the first structural column 11 and the second structural column 13, so that the strength of the first structural column 11 and the second structural column 13 is increased. The H-shaped steel is provided in the underpinning beam 12, so that the underpinning beam 12 can reliably underpin the load of the first structural column 11 to the second structural column 13.

[0048] See also Figure 2 , Figure 2 The schematic diagram of the structure of a subway station 200 in an embodiment of the present application is shown. The subway station 200 provided in the embodiment of the present application includes a first space layer 22, a second space layer 23 and a support structure 100 in any of the above embodiments. In particular:

[0049] like Figure 2As shown, a first top plate 221 is provided on the top of the first space layer 22. The second space layer 23 is located below the first space layer 22. The second space layer 23 includes a bottom plate 232, which is provided on the side of the second space layer 23 away from the first space layer 22. The underpinning beam 12 in the underpinning structure 100 is connected to the first top plate 221, and the extension direction of the underpinning beam 12 forms an angle with the track laying direction of the subway station 200. The first structural column 11 is provided on the side of the first top plate 221 away from the second space layer 23. The second structural column 13 extends along the height direction of the subway station 200. At least part of the underpinning wall 14 is provided in the second space layer 23, and one end of the underpinning wall 14 away from the second structural column 13 is connected to the bottom plate 232, and the extension direction of the underpinning wall 14 is parallel to the track laying direction of the subway station 200.

[0050] It can be understood that, in this embodiment, the second space layer 23 may be a platform layer in the subway station 200 , and a track may be laid on the bottom plate 232 of the second space layer 23 .

[0051] like Figure 2 As shown, the underpinning beam 12 is arranged on the first top plate 221 of the first space layer 22, and its extension direction is designed to be at an angle with the track laying direction of the subway station 200, so that the first structural column 11 and the second structural column 13 arranged on both sides of the first top plate 221 can be underpinned by the underpinning beam 12. It also allows the arrangement of the second structural column 13 to avoid the track of the subway station 200, thereby preventing the second structural column 13 from affecting the laying of the track. The underpinning wall 14 is connected to the second structural column 13 and the extension direction of the underpinning wall 14 is parallel to the track laying direction of the subway station 200, which can ensure that the laying of the track of the subway station 200 is not affected by the underpinning wall 14, and can also reduce the occupation of the second space layer 23 by the underpinning structure 100 through the underpinning wall 14, thereby preventing the underpinning structure 100 from occupying too much area and affecting the laying of the track.

[0052] Optionally, the angle between the extension direction of the support beam 12 and the track laying direction can be designed as needed, for example, it can be 90°, 60° or 45°.

[0053] Preferably, the extension direction of the support beam 12 is perpendicular to the track laying direction.

[0054] In the subway station 200, the first structural column 11 and the second structural column 13 are arranged on opposite sides of the underpinning beam 12, and one end of both is connected to the underpinning beam 12. Therefore, the first structural column 11 and the second structural column 13 can be underpinned by the underpinning beam 12, thereby solving the problem of misalignment between the first structural column 11 and the second structural column 13. In addition, since the structural strength of the underpinning wall 14 is greater than the structural strength of the second structural column 13, and its thickness is smaller than the cross-sectional dimension of the second structural column 13 in its thickness direction, the underpinning wall 14 is connected to the end of the second structural column 13 away from the underpinning beam 12, so that the underpinning wall 14 can not only support the second structural column 13, but also reduce the cross-sectional dimension of the underpinning structure 100. Therefore, when the underpinning structure 100 is applied to the subway station 200 and the underpinning wall 14 is arranged at the platform level of the subway station 200, it can not only solve the problem of the vertical mismatch between the structural columns of the subway station 200 and the upper building, but also solve the problem of intrusion caused by the excessively large cross-section of the structural columns of the subway station 200 while ensuring the structural safety.

[0055] In one embodiment, Figure 2 As shown, the extension direction of the underpinning beam 12 is perpendicular to the track laying direction of the subway station 200. The extension direction of the underpinning beam 12 is perpendicular to the track laying direction of the subway station 200, which can better ensure that the second structural column 13 can avoid the track layout.

[0056] In one embodiment, Figure 2 As shown, the second space layer 23 further includes a second top plate 231, which is arranged opposite to the bottom plate 232, and is used to separate the first space layer 22 from the second space layer 23. One end of the second structural column 13 away from the underpinning beam 12 passes through the second top plate 231 and is connected to the underpinning wall 14 in the second space layer 23. One end of the second structural column 13 passes through the second top plate 231 and is connected to the underpinning wall 14 in the second space layer 23, so that the underpinning wall 14 does not divide the first space layer 22 into multiple sub-areas, so that the underpinning wall 14 does not affect the field of view of the first space layer 22, and can also avoid the influence of the underpinning wall 14 on the architectural function of the first space layer 22.

[0057] In one embodiment, Figure 2 As shown, the subway station 200 includes a third space layer 21 , which is disposed on a side of the first space layer 22 away from the second space layer 23 , and at least a portion of the first structural column 11 is disposed in the first space layer 22 .

[0058] It can be understood that in this embodiment, the first space layer 22 can be the equipment layer of the subway station 200, and the third space layer 21 can be the station hall layer of the subway station 200.

[0059] like Figure 2As shown, when the underpinning beam 12 is arranged in the first space layer 22 of the subway, the third space layer 21 has the same arrangement of the structural columns of the building above the subway station 200, that is, the third space layer 21 can share columns with the building above the subway, so there is no need to set the underpinning beam 12 in the third space layer 21 for underpinning. Therefore, when the third space layer 21 is the station hall layer and the first space layer 22 is the equipment layer, the underpinning beam 12 is set in the first top plate 221 of the first space layer 22, which can solve the visual impact of the large cross-section of the underpinning structure 100 on the public area of ​​the station hall layer.

[0060] In one embodiment, Figure 2 As shown, the subway station 200 further includes a first common column 24, which extends in the height direction of the subway station 200, one end of which is connected to the bottom plate 232, and the other end of which passes through the first top plate 221. The first structural column 11, the second structural column 13 and the underpinning wall 14 are all spaced apart from the first common column 24. One end of the underpinning beam 12 is connected to the first common column 24.

[0061] like Figure 2 As shown, when one end of the underpinning beam 12 is connected to the first common column 24, the first common column 24 can support the underpinning beam 12 together with the second structural column 13, so that the internal force at the end of the underpinning beam 12 is balanced. In addition, the underpinning beam 12 can underpin the load of the first structural column 11 to the first common column 24 and the second structural column 13, which is conducive to the structure meeting safety requirements and improving the reliability of the structure.

[0062] In one embodiment, Figure 2 As shown, the subway station 200 further includes a second common column 25, which extends in the height direction of the subway station 200, one end of the second common column 25 is connected to the bottom plate 232, and the other end passes through the first top plate 221. The second common column 25 is connected to the end of the underpinning beam 12 away from the first common column 24. The first structural column 11, the second structural column 13 and the underpinning wall 14 are all arranged between the first common column 24 and the second common column 25, and are all spaced apart from the first common column 24 and the second common column 25.

[0063] like Figure 2 As shown, when both ends of the underpinning beam 12 are connected to the first common column 24 and the second common column 25 respectively, the first common column 24 and the second common column 25 can support the underpinning beam 12 together with the second structural column 13, so that the internal force at the end of the underpinning beam 12 is balanced. In addition, the underpinning beam 12 can underpin the load of the first structural column 11 to the first common column 24, the second common column 25 and the second structural column 13, which is conducive to the structure meeting safety requirements and improving the reliability of the structure.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A support structure, characterized in that: include: A first structural column, wherein the first structural column is used to support an upper building; an underpinning beam connected to one end of the first structural column; a second structural column, the second structural column being located on a side of the underpinning beam away from the first structural column, and one end of the second structural column being connected to the underpinning beam; A support wall, one end of which is connected to an end of the second structural column away from the support beam, the structural strength of the support wall is greater than the structural strength of the second structural column, and in the thickness direction of the support wall, the thickness of the support wall is less than the cross-sectional size of the second structural column.

2. The underpinning structure according to claim 1, characterized in that: The number of the second structural columns and the number of the underpinning walls are both at least two, at least two of the second structural columns are respectively arranged on opposite sides of the extension direction of the first structural column, and the second structural columns are connected to the underpinning walls in a one-to-one correspondence.

3. The underpinning structure according to claim 1, characterized in that: The underpinning wall is a steel plate concrete wall.

4. The underpinning structure according to claim 1, characterized in that: The underpinning beam is provided with an H-shaped steel, and / or the first structural column and the second structural column are provided with a cross-shaped steel.

5. A subway station, characterized in that: include: A first space layer, wherein a first top plate is provided on the top of the first space layer; a second space layer, the second space layer being located below the first space layer; the second space layer comprising a bottom plate, the bottom plate being arranged on a side of the second space layer away from the first space layer; and, The underpinning structure described in any one of claims 1 to 4, wherein the underpinning beam in the underpinning structure is connected to the first top plate, and an extension direction of the underpinning beam forms an angle with a track laying direction of the subway station; the first structural column is arranged on a side of the first top plate away from the second space layer; the second structural column extends along a height direction of the subway station; at least a portion of the underpinning wall is arranged in the second space layer, and an end of the underpinning wall away from the second structural column is connected to the bottom plate, and an extension direction of the underpinning wall is parallel to a track laying direction of the subway station.

6. The subway station according to claim 5, characterized in that: The extension direction of the underpinning beam is perpendicular to the track laying direction of the subway station.

7. The subway station according to claim 5, characterized in that: The second space layer also includes a second top plate, which is arranged opposite to the bottom plate and is used to separate the first space layer from the second space layer; one end of the second structural column away from the underpinning beam passes through the second top plate and is connected to the underpinning wall in the second space layer.

8. The subway station according to claim 5, characterized in that: The subway station includes a third space layer, which is arranged on a side of the first space layer away from the second space layer, and at least a part of the first structural column is arranged in the first space layer.

9. The subway station according to any one of claims 5 to 8, characterized in that: The subway station also includes a first common column, which extends along the height direction of the subway station, one end of the first common column is connected to the bottom plate, and the other end passes through the first top plate; the first structural column, the second structural column and the support wall are all spaced apart from the first common column; one end of the support beam is connected to the first common column.

10. The subway station according to claim 9, characterized in that: The subway station also includes a second common column, which extends along the height direction of the subway station, with one end of the second common column connected to the bottom plate and the other end passing through the first top plate; the second common column is connected to an end of the underpinning beam away from the first common column; the first structural column, the second structural column and the underpinning wall are all arranged between the first common column and the second common column, and are all spaced apart from the first common column and the second common column.

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