Aluminum alloy-high strength steel combined steel column for rockfall passive net and installation method

Abstract

The application discloses an aluminum alloy-high-strength steel combined steel column for rockfall passive nets and a mounting method, and belongs to the technical field of slope rockfall protection. The combined steel column adopts a light-weight and corrosion-resistant aluminum alloy column body, and the two ends are connected with high-strength steel column head nodes and high-strength steel column foot nodes. The column head node is a T-shaped symmetrical structure, which effectively reduces the additional bending moment caused by the connection eccentricity. The column foot node adopts a unique spherical hinge design, which realizes the ability of vertical deflection and limited horizontal swing through the cooperation of the plate hemisphere, the eagle beak plate, the spherical hinge support plate and the bottom plate, and has self-locking and limiting functions. The application effectively solves the problems of the traditional steel column, such as large weight, poor corrosion resistance, low modularization degree, poor column foot rotation performance and the like, and has the advantages of light weight, convenient installation, good impact resistance, high structural stability and the like, and significantly improves the reliability and adaptability of the protection system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slope protection and rockfall interception, and particularly relates to an aluminum alloy-high strength steel combined steel column for a rockfall passive net and a mounting method. BACKGROUND

[0002] Rockfall disaster is a common geological disaster in mountainous highway, railway and mining area environment, which has the characteristics of strong impact force, high uncertainty of movement path, and concentrated action point, etc., and puts forward very high requirements for the impact resistance of the protection system, especially the supporting structure. As an effective engineering measure to intercept such disasters, the passive flexible protection system has been widely used. In the system, the steel column as the core supporting component directly bears and transmits the impact load from the protection net, and the advantages and disadvantages of its structural performance fundamentally determine the stability, reliability and impact resistance of the entire protection system.

[0003] At present, most of the rockfall passive net columns used in engineering practice are pure steel structures. Although steel has the advantage of high strength, the problem of large structural self-weight is particularly prominent in dangerous mountainous areas or high slope environments, which brings great difficulties to the transportation, on-site hoisting and precise positioning of the components, significantly reducing the construction efficiency. In addition, steel is prone to corrosion in adverse environments such as rain, snow, freezing and salt spray, and must be protected by additional corrosion-resistant plating, increasing maintenance costs and workload. From the perspective of mechanical properties, the existing steel columns have insufficient lateral deflection unloading capacity due to their large inertia caused by large self-weight when subjected to rockfall impact, making it difficult to effectively avoid strong impact and prone to local crushing or connection failure.

[0004] The column head and column foot nodes in the prior art are mostly in the form of integral cast steel or welded structure. The integral cast steel is complex to process and has high cost; while the welded structure has problems such as material performance degradation in the heat-affected zone, residual stress, and local bearing strength calculation which is often difficult to pass. In particular, the common column head structure will produce a large additional bending moment when bearing the upward anchor rope tension, which deteriorates the stress state of the column, because the connection hole of the column head structure deviates from the neutral axis of the column. In terms of column foot, most existing designs use a simple pin shaft connection method, which has very limited lateral swing ability and lacks adaptability to deformation caused by impact load. A few designs that use ball hinge structure often have defects such as insufficient lateral limiting, complex structure leading to installation difficulties, or excessively high manufacturing cost, making it difficult to be widely applied in engineering. SUMMARY

[0005] The present application aims to overcome the above-mentioned defects and deficiencies in the prior art, and provides an aluminum alloy-high strength steel combined steel column for rockfall passive net.

[0006] To solve the above technical problems, the technical scheme provided by the present application is:

[0007] The present application provides an aluminum alloy-high strength steel combined steel column for rockfall passive net, comprising: an aluminum alloy column body, a high strength steel column head node, a high strength steel column foot node, and a connecting piece.

[0008] One end of the aluminum alloy column body is connected to the high strength steel column head node through a bolt, and the other end is connected to the high strength steel column foot node through a bolt.

[0009] The high strength steel column foot node comprises a plate-equipped hemisphere, an eagle beak plate, a spherical hinge support plate, and a bottom plate.

[0010] The plate-equipped hemisphere is bolted to one end of the aluminum alloy column body.

[0011] The eagle beak plate is fixedly arranged on the bottom plate.

[0012] The spherical hinge support plate is arranged between the plate-equipped hemisphere and the bottom plate and is connected to the bottom plate through a bolt.

[0013] The hemisphere part of the plate-equipped hemisphere is in contact with the support surface of the spherical hinge support plate, and the special-shaped support plate at the bottom of the plate-equipped hemisphere forms a Z-shaped contact self-locking connection with the eagle beak plate.

[0014] Further, the connecting piece comprises a shackle for connecting an external anchor rope or support rope and a steel wire rope. Further, the aluminum alloy column body comprises a column body main body and column body end plates fixedly arranged at both ends of the column body main body.

[0015] The column body end plate connected to the high strength steel column head node has a horizontal long axis, and the opening extension section is located on the left and right sides of the column body main body.

[0016] The column body end plate connected to the high strength steel column foot node has a vertical long axis, and the opening extension section is located on the upper and lower sides of the column body main body.

[0017] Further, the high strength steel column head node is a T-shaped casting, and the wing plate part of the T-shaped casting is provided with two circular holes arranged symmetrically about the center axis for connecting the shackles, and the hole distance is not greater than 100 mm.

[0018] Further, the half-sphere with plate includes a half-sphere part and a connecting plate part connected with the half-sphere part through a short circular tube; the connecting plate part is provided with a bolt hole; the minimum axial length of the short circular tube is configured to: when the combined steel column as a whole rotates downward with the center of the half-sphere part as the rotation center, the bolt connecting the half-sphere with plate and the end plate of the column body is in contact with the beak plate below, and the rotation angle reaches 10 degrees.

[0019] Further, the beak plate is welded to the bottom plate, has a beak head part protruding towards the column body, an upwardly arranged beak part, and a beak eye round hole for connecting a shackle or supporting a rope; the beak part of the beak plate forms a Z-type self-locking connection with the special-shaped supporting plate fixed at the bottom of the half-sphere part.

[0020] Further, a gap of 2mm is reserved between the beak part and the special-shaped supporting plate, and the gap is filled with aluminum sheets with a thickness of 2-3mm.

[0021] Further, the ball hinge supporting plate is provided with a half-sphere top cylindrical groove which is open on one side; the top of the groove is a spherical recess which is in close contact with the half-sphere part of the half-sphere with plate; two wedge-shaped transverse limiting plates are fixed on both sides of the groove, and the arc surface of the wedge-shaped transverse limiting plates is in close contact with the outside of the half-sphere part.

[0022] Further, the ball hinge supporting plate is provided with a bolt hole at the upper corner on the closed side of the groove; the bottom plate is provided with a non-through bolt hole with threads, and the ball hinge supporting plate is connected with the bottom plate through a bolt.

[0023] Further, the aluminum alloy column body is made of a work-hardened 5-series aluminum alloy material.

[0024] On the other hand, the present application also claims to protect an installation method of an aluminum alloy-high strength steel combined steel column for rockfall passive net, and the high strength steel column foot node is installed by a step-by-step mortise and tenon joint, including the following steps:

[0025] Step one, firmly connecting the half-sphere with plate to the column body end plate of the aluminum alloy column body through a bolt;

[0026] Step two, Z-type self-locking connecting the beak part of the beak plate and the special-shaped supporting plate at the bottom of the half-sphere with plate, forming preliminary positioning, and embedding aluminum sheets in the gap;

[0027] Step three, inserting the groove open side of the ball hinge supporting plate into the half-sphere of the half-sphere with plate, until the spherical recess at the top of the groove is completely in close contact with the half-sphere part, so that the Z-type self-locking connection is tightly matched, and the wedge-shaped transverse limiting plate forms a transverse constraint on the half-sphere;

[0028] Step four, connect the ball hinge support plate with the bottom plate by bolts, complete the overall locking of the high-strength steel column foot joint.

[0029] Compared with the prior art, the application has the following beneficial technical effects:

[0030] The application significantly reduces the overall weight, improves corrosion resistance, and facilitates transportation and installation by adopting a structure of a lightweight aluminum alloy column body combined with a high-strength steel joint. The modular column head and column foot design avoids welding problems through bolt connection, improving production efficiency and local pressure capacity. The optimized column head structure effectively reduces additional bending moments, and the spherical hinge type column foot realizes controllable multidirectional rotation and self-locking limiting, significantly enhancing the adaptive energy dissipation capacity, stability and reliability of the structure under impact load. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0032] Figure 1 It is a schematic diagram of the overall structure of the aluminum alloy-high strength steel combined steel column for the rockfall passive net in the embodiment of the application.

[0033] Figure 2 It is an axonometric view of the high-strength steel column head joint in the embodiment of the application.

[0034] Figure 3 It is a plan view of the high-strength steel column head joint in the embodiment of the application.

[0035] Figure 4 It is a front view of the high-strength steel column head joint in the embodiment of the application.

[0036] Figure 5 It is an axonometric view of the high-strength steel column foot joint in the embodiment of the application.

[0037] Figure 6 It is a detailed view of the half-sphere with plate in the high-strength steel column foot joint in the embodiment of the application.

[0038] Figure 7 It is a detailed view of the hawk's beak plate in the high-strength steel column foot joint in the embodiment of the application.

[0039] Figure 8 It is a detailed view of the ball hinge support plate in the high-strength steel column foot joint in the embodiment of the application.

[0040] Figure 9 It is a plan view of the high-strength steel column foot joint in the embodiment of the application.

[0041] Figure 10 The front view of the high-strength steel column head joint in the embodiment of the present application;

[0042] The reference signs used in the present application include: aluminum alloy column body 1, column body main body 11, column body end plate 12, high-strength steel column head joint 2, high-strength steel column foot joint 3, plate-equipped hemisphere 31, talon plate 32, spherical hinge support plate 33, bottom plate 34, connecting piece 4, bolt 41, shackle 42, steel wire rope 43. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0044] As shown in Figure 1 The present application provides an aluminum alloy-high-strength steel combined steel column for rockfall passive nets, which mainly consists of an aluminum alloy column body 1, a high-strength steel column head joint 2, a high-strength steel column foot joint 3, and a connecting piece 4. One end of the aluminum alloy column body 1 is connected to the high-strength steel column head joint 2 by a bolt, and the other end is connected to the high-strength steel column foot joint 3 by a bolt. This connection method is not only convenient for installation and disassembly, but also can ensure the connection strength between the components.

[0045] The high-strength steel column foot joint 3 is an important component of the combined steel column, which includes a plate-equipped hemisphere 31, a talon plate 32, a spherical hinge support plate 33, and a bottom plate 34. The plate-equipped hemisphere 31 is connected to one end of the aluminum alloy column body 1 by a bolt to ensure the stable combination between them. The talon plate 32 is fixedly arranged on the bottom plate 34 to provide certain support and limiting action for the entire column foot joint. The spherical hinge support plate 33 is arranged between the plate-equipped hemisphere 31 and the bottom plate 34 and is connected to the bottom plate 34 by a bolt to play a role in connecting and supporting the plate-equipped hemisphere 31. The hemisphere part of the plate-equipped hemisphere 31 is in contact with the support surface of the spherical hinge support plate 33. This matching method can make the plate-equipped hemisphere 31 rotate flexibly within a certain range, and at the same time, the special-shaped support plate at the bottom of the plate-equipped hemisphere 31 forms a Z-shaped contact self-locking connection with the talon plate 32. This self-locking connection structure can provide effective constraint when the steel column is subjected to external force, thereby ensuring the stability of the steel column.

[0046] The aluminum alloy column body 1 comprises a column body main body 11 and column body end plates 12 fixedly arranged at both ends of the column body main body 11. Among them, the column body end plate 12 connected to the high-strength steel column head joint 2 has a long axis arranged transversely, and the opening extension section is located on the left and right sides of the column body main body 11; and the column body end plate 12 connected to the high-strength steel column foot joint 3 has a long axis arranged vertically, and the opening extension section is located on the upper and lower sides of the column body main body 11. Such a structure design can better adapt to the connection requirements of different joints.

[0047] The high-strength steel column head joint 2 is a T-shaped casting, and the wing plate part of the T-shaped casting is provided with two circular holes arranged symmetrically about the center axis, which are used for connecting the shackle 42.

[0048] The plate-equipped hemisphere 31 comprises a hemisphere part and a connecting plate part connected to the hemisphere part through a short circular tube, and the connecting plate part is provided with bolt holes for connecting with other components. The axial length of the short circular tube is specifically configured to meet the rotation requirements of the steel column under certain conditions.

[0049] The hawk bill plate 32 is welded to the bottom plate 34, which has a hawk head part protruding towards the column body, a hawk bill part arranged upwards, and a hawk eye circular hole for connecting the shackle 42 or supporting the rope, and the hawk bill part of the hawk bill plate 32 forms a Z-shaped self-locking connection with the special-shaped supporting plate fixed at the bottom of the hemisphere part.

[0050] A certain gap is reserved between the hawk bill part and the special-shaped supporting plate, and the gap is filled with aluminum sheets.

[0051] The spherical hinge supporting plate 33 is provided with a half-sphere top cylindrical groove which is open on one side; the top of the groove is a spherical recess which is in close contact with the hemisphere part of the plate-equipped hemisphere 31; two wedge-shaped transverse limiting plates are fixedly arranged on both sides of the groove, and the arc surface of the wedge-shaped transverse limiting plate is in close contact with the outside of the hemisphere part.

[0052] The spherical hinge supporting plate 33 is provided with a bolt hole at the upper corner on the closed side of the groove, and the bottom plate 34 is provided with a non-through bolt hole with threads, and the spherical hinge supporting plate 33 is connected to the bottom plate 34 through the bolt.

[0053] The connecting piece 4 comprises a shackle 42 for connecting external anchor ropes or support ropes and a steel wire rope 43.

[0054] The aluminum alloy column body 1 is made of a work-hardened 5-series aluminum alloy material.

[0055] The application also relates to a mounting method of the aluminum alloy-high-strength steel combined steel column for the rockfall passive net, and in the mounting method, the high-strength steel column foot joint 3 is mounted in a step-by-step mortise and tenon joint manner, and the mounting method comprises the following steps.

[0056] Step one, firmly connect the plate-equipped hemisphere 31 to the column body end plate 12 of the aluminum alloy column body 1 through a bolt.

[0057] Step 2: The beak part, which is welded and fixed as an integrated component by the beak plate 32 and the base plate 34, is connected to the irregular support plate at the bottom of the plate hemisphere 31 by a Z-shaped self-locking connection to form a preliminary positioning, and aluminum sheets are embedded in the gap.

[0058] Step 3: Place the open side of the groove of the ball hinge support plate 33 against the hemisphere of the plate hemisphere 31 and insert it downward along the groove until the spherical recess at the top of the groove is completely against the hemisphere, so that the Z-type self-locking connection is tightly fitted and the wedge-shaped lateral limiting plate forms a lateral constraint on the hemisphere.

[0059] Step four: Connect the ball hinge support plate 33 to the base plate 34 with bolts to complete the overall locking of the high-strength steel column foot node 3.

[0060] An embodiment of this application is described below:

[0061] like Figures 2-10 As shown, this embodiment provides an aluminum alloy-high strength steel composite steel column for a rockfall passive net, including: an aluminum alloy column body 1, high strength steel column head nodes 2 and high strength steel column foot nodes 3 disposed at both ends of the column body, and a connector 4.

[0062] The aluminum alloy column body 1 is preferably made of work-hardened 5-series aluminum alloy, which is lightweight, highly corrosion-resistant, and ductile. Its excellent deflection capability upon impact is a result of the combined effect of the low inertia of the lightweight column body and the rotational capacity of the column base. Compared to traditional steel columns, the density of the aluminum alloy column is significantly reduced, approximately one-third that of steel. This characteristic greatly reduces the structural weight, improving installation efficiency and ease of construction. Column end plates 12 are provided at both ends of the column body, each with bolt holes for easy connection to the high-strength steel column head node 2 and the high-strength steel column base node 3. Specifically, the column end plate 12 connecting to the column head has its long axis arranged laterally, with the extended openings located on the left and right sides of the column body 11; the column end plate 12 connecting to the column base has its long axis arranged vertically, with the extended openings located on the upper and lower sides of the column body 11.

[0063] The high-strength steel column head node 2 and high-strength steel column base node 3 adopt a modular design, which facilitates transportation, installation and large-scale production. They are fixedly connected to the column end plate 12 of the aluminum alloy column body 1 by bolt connection. This design avoids the process difficulties caused by aluminum alloy welding, and at the same time effectively solves the problem that it is difficult to pass the local bearing pressure verification of the column head and column base.

[0064] The high-strength steel column head node 2 is simple in structure and is a T-shaped cast with a round hole. The front end is provided with two round holes arranged symmetrically about the center axis, and the hole distance is not greater than 100 mm, which is designed to reduce the additional bending moment generated by the eccentric force. The round holes are used to connect the shackles 42, wherein the upper shackles 42 are used to connect two symmetrically arranged upper pull anchor ropes, realizing the upward anchoring of the column head, thereby enhancing the stability and tensile capacity of the overall structure; the lower shackles 42 can be used to connect the main support rope, ensuring that the tensile force generated when the protective net is subjected to rockfall impact can be efficiently transmitted to the stand column, thereby guaranteeing the overall force continuity and energy dissipation capacity of the protection system.

[0065] The high-strength steel column foot node 3 adopts a spherical hinge type connection structure, mainly including a hemispherical plate 31, a beak plate 32, a spherical hinge support plate 33 and a bottom plate 34. The hemispherical plate 31 has bolt holes in the plate at the same level as the end plate 12 of the column body, and a short circular tube is provided at the transition between the opening plate and the hemispherical part. The minimum axial length of the short circular tube is determined according to the following principle: when the steel column as a whole rotates downward with the center of the hemispherical ball as the center, the contact between the connecting bolt 41 and the lower beak plate 32 occurs, and the rotation angle at this time should reach 10 degrees, so as to ensure that the node has sufficient vertical rotation capacity. At the same time, a special support plate is welded at the bottom of the hemisphere.

[0066] The beak plate 32 is in the shape of a beak and is welded to the bottom plate 34. The “beak head” faces the column body direction, the “beak mouth” is arranged upward, and the “beak eye” is a round hole for connecting the shackle 42 or the support rope. The “beak mouth” part of the beak plate 32 and the special support plate at the bottom of the hemispherical plate 31 form a Z-shaped contact self-locking connection. A gap of about 2 mm is reserved between the two, which provides the necessary movement space for the horizontal rotation of the steel column, avoiding rotation restriction. The gap can be filled with 2-3 mm thick aluminum sheet, which makes the mortise connection after the column foot is inserted into the base more compact; since aluminum is soft, it will not form a rigid obstacle during the later column rotation process, thereby ensuring the stability of the connection while not affecting the rotation performance of the structure, and providing reliable vertical support and axial drag constraint for the steel column.

[0067] The main body of the spherical hinge support plate 33 has a single-sided open hemispherical top cylindrical recess (or capsule-shaped recess). The hemispherical part of the hemispherical plate 31 is fitted with the spherical recess at the top of the recess, and lubricant is preferably applied between the contact interfaces to enhance the rotation capacity, so as to realize the flexible deformation of the structure to adapt to the stress change. Two wedge-shaped transverse limiting plates are welded on both sides of the recess, and the arc surface of the wedge-shaped transverse limiting plate is fitted with the outside of the hemisphere, which can effectively prevent excessive displacement and improve the safety of the node. The spherical hinge support plate 33 has bolt holes at the upper left corner and the upper right corner, and these bolt holes are located on the closed side of the one-way open recess.

[0068] The bottom plate 34 is provided with a non-through threaded bolt hole at the position flush with the opening of the spherical hinge support plate 33. The spherical hinge support plate 33 is connected with the bottom plate 34 through the bolt 41. All the loads borne by the high-strength steel column foot node 3 are finally transmitted to the foundation through the bottom plate 34.

[0069] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same. Although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art will understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features. Such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An aluminum alloy-high strength steel combined steel column for rockfall passive net, characterized by, The utility model relates to a kind of combined steel columns, including: Aluminum alloy column body (1), high-strength steel column head node (2), high-strength steel column foot node (3) and connecting piece (4); One end of the aluminum alloy column body (1) is connected to the high-strength steel column head node (2) by bolts, and the other end is connected to the high-strength steel column foot node (3) by bolts; The high-strength steel column foot node (3) includes a plate half-sphere (31), a hawk bill plate (32), a spherical hinge support plate (33) and a bottom plate (34); The plate half-sphere (31) is bolted to one end of the aluminum alloy column body (1); The hawk bill plate (32) is fixedly arranged on the bottom plate (34); The spherical hinge support plate (33) is arranged between the plate half-sphere (31) and the bottom plate (34) and is connected to the bottom plate (34) by bolts; The spherical surface of the plate half-sphere (31) is in contact with the support surface of the spherical hinge support plate (33), and the special-shaped support plate at the bottom of the plate half-sphere (31) forms a Z-shaped contact self-locking connection with the hawk bill plate (32). The connecting piece (4) includes a thimble (42) for connecting external anchor ropes or support ropes and a steel wire rope (43). The aluminum alloy column body (1) includes a column body main body (11) and first and second column body end plates fixedly arranged at both ends of the column body main body (11); The first column body end plate connected to the high-strength steel column head node (2) has a horizontal long axis and hole extension segments on both sides of the column body main body (11); The second column body end plate connected to the high-strength steel column foot node (3) has a vertical long axis and hole extension segments on both sides of the column body main body (11); The high-strength steel column head node (2) is a T-shaped casting, and the wing plate part of the T-shaped casting is provided with two circular holes arranged symmetrically about the central axis and used for connecting the thimble (42), with a hole distance of not more than 100 mm; The plate half-sphere (31) includes a spherical part and a connecting plate part connected to the spherical part through a short circular tube; the connecting plate part is provided with bolt holes; the minimum axial length of the short circular tube is configured such that, when the combined steel column is rotated downward with the spherical center of the plate half-sphere (31) as the rotation center, the bolt connecting the plate half-sphere (31) and the second column body end plate comes into contact with the hawk bill plate (32) below, and the rotation angle reaches 10 degrees.

2. The composite steel column according to claim 1, wherein The hawk bill plate (32) is welded to the bottom plate (34) and has a hawk head part protruding toward the column body, an upper hawk bill part and a hawk eye circular hole for connecting the thimble (42) or support ropes; the hawk bill part of the hawk bill plate (32) forms a Z-shaped contact self-locking connection with the special-shaped support plate fixed at the bottom of the spherical part.

3. The composite steel column according to claim 2, wherein A 2 mm gap is reserved between the hawk bill part and the special-shaped support plate, and the gap is filled with aluminum sheets with a thickness of 2-3 mm.

4. The composite steel column according to claim 2, wherein The ball hinge supporting plate (33) is provided with a half-sphere top cylinder groove which is open on one side; the top of the groove is a spherical recess which is attached to the half-sphere part of the plate half-sphere (31); two wedge-shaped transverse limiting plates are fixed on both sides of the groove, and the arc surface of the wedge-shaped transverse limiting plate is attached to the outside of the half-sphere part.

5. The composite steel column according to claim 4, wherein, The ball hinge supporting plate (33) is provided with a bolt hole in the upper corner on the closed side of the groove; the bottom plate (34) is provided with a non-through bolt hole with a thread, and the ball hinge supporting plate (33) is connected to the bottom plate (34) by a bolt.

6. The composite steel column according to claim 1, wherein The aluminum alloy column body (1) is made of a work-hardened 5-series aluminum alloy material.

7. A method of installing an aluminum alloy-high strength steel composite column for a rockfall passive net as claimed in claim 4, characterized in that, The high-strength steel column foot node (3) is installed in a step-by-step mortise and tenon manner, including the following steps: Step one, firmly connect the plate half-sphere (31) to the second column body end plate of the aluminum alloy column body (1) by a bolt; Step two, connect the eagle beak part, which is an integrated component formed by welding the eagle beak plate (32) and the bottom plate (34), to the special-shaped supporting plate at the bottom of the plate half-sphere (31) in a Z-type self-locking manner to form preliminary positioning, and insert an aluminum sheet into the gap; Step three, insert the groove open side of the ball hinge supporting plate (33) into the half-sphere of the plate half-sphere (31) along the groove until the spherical recess at the top of the groove is completely attached to the half-sphere part, so that the Z-type self-locking connection is tightly matched, and the wedge-shaped transverse limiting plate forms a transverse constraint on the half-sphere; Step four, connect the ball hinge supporting plate (33) to the bottom plate (34) by a bolt to complete the overall locking of the high-strength steel column foot node (3).

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