CN116146020A - A node connection structure and structure system with adjustable stiffness for layered assembled steel structure - Google Patents

Abstract

A node connection structure and structural system with adjustable stiffness for layered assembled steel structures, the node connection structure includes: upper and lower steel columns, flange plates are welded at the butt ends of the upper and lower steel columns Connecting node, its upper and lower ends are welded with upper and lower flange plates, and the upper and lower flange plates are respectively connected to the flange plates at the butt ends of the upper steel column and the lower steel column, so that the upper steel column, The lower steel column is connected as a whole. The invention solves the technical problems of column-column and beam-column connection design and connection stiffness adjustment existing in the existing layered assembled steel structure system; moreover, the node connection structure has the characteristics of full bolt connection and adjustable stiffness , can greatly reduce the workload of on-site welding, and provide a variety of stiffness options for structural design.

Description

A node connection structure with adjustable stiffness for layered fabricated steel structures and structural system

technical field

The invention relates to the technical field of node connection of building structures, and relates to a node connection structure and structural system with adjustable stiffness for layered assembled steel structures.

Background technique

Prefabricated steel structures have developed vigorously in recent years because of their standardized design, factory production, and assembly construction.

For example, Chinese patent application number 202011384603.8 discloses a prefabricated assembled reinforced concrete beam-column steel joint, which includes a prefabricated composite beam, a prefabricated composite column, and a prefabricated steel structure connection node. The beam is composed of ordinary reinforced concrete beams and section steel set at the end of the ordinary reinforced concrete beams, so it is divided into three sections, from the two ends to the middle are the steel structure section, the joint section and the reinforced concrete section. Embedded steel connection joints include two types of embedded rigid joints with and without webs, consisting of upper and lower steel joint horizontal plates, surrounding steel joint vertical plates, and cross-shaped steel joint webs arranged between the upper and lower steel joint horizontal plates And so on.

Also, Chinese patent application number 202011600645.0 discloses a nested box conversion node, which includes: an outer box, an inner box, a contact partition, a cross plate, a group of vertical stiffeners, a group of partitions and a group of The compartment board, the inner box is arranged inside the outer box, the contact partition is arranged under the inner box, the cross plate is arranged inside the outer box and placed under the contact partition, The vertical stiffening plate is arranged between the outer box body and the inner box body, the partition plate is arranged at the corner of the inner box body, and its two sides are connected with two adjacent vertical stiffening plates. The board and the cross board are set crosswise. The nested box conversion node nests the outer box and the inner box, and the boxes are connected as a whole through connecting partitions, vertical stiffeners and partitions, and a cross board and a cross compartment board are added at the bottom of the outer box , the structure of the conversion node is optimized, which can greatly improve the overall stability and mechanical performance of the conversion node structure, thereby improving the safety of its later use.

The current prefabricated steel structure often adopts welding method for the treatment of column-column connection joints. The defects of on-site welding, such as uncontrollable quality, time-consuming and labor-intensive operation, greatly restrict the promotion and use of this type of structure.

The layered assembled steel structure can better solve the above problems. The concept of "column layering" adopted by it is similar to the mode of building blocks. After forming a construction platform, the upper layer of columns can be installed, which effectively reduces the The high-altitude operation on the construction site greatly improves the construction efficiency while improving safety. Layered prefabricated steel structures have become one of the most important features of many industrial buildings at home and abroad, and the structural design of column-column connections and beam-column connections is one of the key technical difficulties affecting layered prefabricated structures.

The traditional prefabricated steel structure system is mainly prefabricated with beam and column components as the basic unit, and it is inevitable to encounter the problem of component splicing during on-site construction and installation. If on-site welding is adopted, it will increase the workload and complexity, and it is difficult to reflect the advantages of prefabricated buildings; if bolted connection is adopted, the influence of the connection position on the building space needs to be considered. Ordinary layered prefabricated structural system adopts the mode of prefabrication and installation by layer. The beams are connected and the columns are layered and dense. The method of installing beam-column components layer by layer is clear, similar to "building blocks"; the connections are concentrated at the node positions, which has little impact on the building space.

The traditional layered prefabricated structure adopts the pattern of beam penetration and column hinge. Usually, a beam with a larger cross-section and a column with a smaller cross-section are selected. The connection between the column and the beam is connected by welding the end plate at the end of the column and connecting the flange of the beam with high-strength bolts. , the stiffness of the joint connection is almost difficult to adjust, and the only way to increase the stiffness of the joint is generally to increase the column section and the thickness of the connecting plate. Therefore, the joints of the traditional layered assembly structure do not have the stiffness adjustability, which will bring the following disadvantages:

(1) Since the column section is small and only a few bolts are used to connect the column end plate to the beam flange, the stiffness of the beam-column joint is weak, which is often regarded as a hinge joint, which wastes the ability of the column to participate in lateral resistance;

(2) The capacity of the second line of defense is insufficient. Under extreme earthquake or wind loads, the column should act as the second line of defense of the structure and play the function of preventing the structure from collapsing. Since the beams and columns are approximately hinged, the structural redundancy will be greatly reduced. Insufficient collapse capacity;

(3) The load transfer is single, that is, the column is only regarded as a member bearing the vertical force, and all horizontal loads are borne by the support. In some scenarios, if the support is not capable of lateral resistance, the joint stiffness cannot be changed to allow the column to bear an appropriate part. The horizontal load makes the design complicated;

(4) The structural form is single, and the structure can only be regarded as a support-hinged frame, which is not applicable in some areas or scenarios, and cannot be changed into a rigid frame by changing the stiffness of the nodes to increase the usable range of the structural system;

(5) The beam section is large. As the main component to coordinate column deformation and floor deformation, the beam section usually adopts a larger section, and due to the overall length, the beam section at least on the entire floor is the same. In some positions with small spans, the usual design method is to choose a smaller section to make full use of the material, and the beam penetration makes the section utilization ratio lower.

Contents of the invention

The purpose of the present invention is to provide a node connection structure and structural system with adjustable stiffness for layered assembled steel structures, so as to solve the column-column connection and beam-column connection existing in the existing layered assembled steel structure system Design and connection stiffness adjustment and other technical issues; moreover, the connection structure has the characteristics of full bolt connection and adjustable stiffness, which can greatly reduce the workload of on-site welding, and provides a variety of stiffness options for structural design.

To achieve the above object, technical scheme of the present invention:

A node connection structure and structural system with adjustable stiffness for layered fabricated steel structures, comprising:

The upper steel column and the lower steel column are welded with flange plates at the butt ends of the upper steel column and the lower steel column;

Connecting nodes, the upper and lower ends of which are welded with upper and lower flange plates, the upper and lower flange plates are respectively connected to the flange plates at the butt ends of the upper steel column and the lower steel column, so that the upper steel column, the lower steel column The steel columns are connected as one.

Further, the connection structure of the present invention also includes:

Steel girders, which are I-shaped steel girders, H-shaped steel girders, H-shaped steel beams with beading or double groove composite steel girders;

Prefabricated floor slabs, which are concrete slabs, ALC slabs, etc. with preset connection holes;

The connection node is the intersection of two steel plates to form a cross-shaped or X-shaped cross-section; at least one steel plate in the intersecting steel plates and at least one side end of the upper and lower flange plates extend outward respectively to form a web connection part, an upper connection part, lower connection part;

The upper and lower flanges of the steel beam and the web of the steel beam are respectively connected to the upper connection part, the lower connection part and the web connection part of the connection node.

Preferably, the connections between the steel beams and the connection nodes are high-strength bolt connections.

Preferably, the upper and lower flange plates of the connection node have connection through holes for high-strength bolts to pass through on the upper connection part and the lower connection part, and the connection through holes are oblong holes or large round holes.

Preferably, the connection node is two steel plates intersecting to form a cross-shaped or X-shaped cross-section.

Further, a reinforcement is provided between the upper and lower flanges of the connecting node, and the two ends of the reinforcement are respectively connected to the upper and lower flanges.

Preferably, the reinforcing member is a U-shaped structure, and its two sides are respectively connected to the upper and lower flange plates.

Preferably, the reinforcing member is U-shaped, and a side plate is provided on one side thereof, and the two sides of the U-shaped structure of the reinforcing member are respectively connected to the upper and lower flange plates.

Preferably, the flange plates at the ends of the upper and lower steel columns are connected with the upper and lower flange plates of the connection node by high-strength bolts.

Preferably, the reinforcement member is connected to the upper and lower flange plates of the connection node through high-strength bolts.

Preferably, the reinforcing member is connected to the connecting node through high-strength bolts, and is shared with the high-strength bolts connecting the upper and lower flange plates of the connecting node with the flange plates at the ends of the upper and lower steel columns.

Preferably, the upper steel column and the lower steel column are square steel pipes, round steel pipes, section steel composite columns or spliced columns.

According to the node connection structure with adjustable stiffness for layered assembled steel structure of the present invention, the flange plate welded to the end of the steel column can realize different mechanical properties by selecting plate bodies with different thicknesses.

The connection node has a cross-shaped or X-shaped cross-section, which is composed of two vertically intersecting steel plates, and its section moment of inertia is generally smaller than the section moment of inertia of the upper and lower steel columns, forming a joint with weaker stiffness that can be approximated Considered a basic construction effect of hinges.

The upper and lower flange plates of the connection node can have multiple thicknesses to achieve different mechanical properties.

The cross-steel plates at the connection nodes can be selected in multiple thicknesses, so that the moment of inertia of the section can be changed to achieve different mechanical properties.

The reinforcements have various structural types, and the reinforcements of different strengths are installed to strengthen the nodes to achieve different stiffnesses of connections and realize the characteristics of adjustable stiffness.

The high-strength bolts can be selected in different grades and specifications, such as grade 8.8 or grade 10.9, M16 or M20 bolts, so that the connection has different mechanical properties to meet the different needs of structural design.

The present invention also provides a structural system with the described node connection structure, which includes a frame structure formed by several vertical load-bearing columns, lateral anti-side units and prefabricated floor slabs; wherein,

Described vertical load-bearing column comprises upper steel column, lower steel column in described node connection structure, is connected as a whole by described connection node;

The lateral anti-lateral unit comprises a steel beam connected to the connection node in the nodal connection configuration;

The prefabricated floor slab is lapped on the steel beam by bolts, and forms an integral body with the steel beam.

Preferably, the lateral anti-side unit also includes an enclosure wall or support; the enclosure wall or support is respectively connected to the upper steel column, the lower steel column, the connecting node or/and the lateral anti-corrosion column of the vertical load-bearing column. Steel beams for side units.

Based on the shortcomings of the aforementioned traditional layered assembly structure nodes that do not have stiffness adjustability, the present invention proposes a new type of cross-shaped node layered assembly structure system, which has convenient and efficient stiffness adjustable characteristics. On the basis of the layered assembly structure system, the following advantages are added:

(1) The joints are prefabricated as independent components, which can provide a variety of options for the joint construction, making the choices more diverse, and at the same time, when the joints are damaged, only the joints need to be replaced instead of the beam or column components.

(2) The reinforcement method can be selected according to the needs. The structural system has three modes: beam-column joint joint, beam rigid joint joint column joint, and beam-column joint joint joint, and then various structural forms such as joint frame, semi-rigid joint frame and rigid joint frame can be formed. Without changing the form of the beam-column components, the applicable scenarios of the system have been greatly increased.

(3) The node connection structure with adjustable stiffness for layered assembled steel structures according to the present invention includes column-column connection nodes and beam-column connection nodes, which have the characteristics that the stiffness can be adjusted. By selecting and installing different types of reinforcement From parts to nodes, the rotational stiffness and strength of the node connections are changed, and the changes of hinged joints, semi-rigid joints and rigid joints can be realized. This feature gives structural designers more room for choice and flexible adjustment, and also greatly reduces the types of structural components required, which is conducive to standardized design and factory production.

(4) The node connection structure (column-column connection node, beam-column connection node) of the present invention has excellent seismic performance. Strengthening can improve the collapse resistance of the structure, reduce damage to weak parts, and give full play to the function of the second line of defense. Moreover, the optimal selection and reasonable adjustment of the connection stiffness can greatly reduce the earthquake effect on the structure, and achieve steel saving, green and low carbon In addition, the post-earthquake repairs of the column-column connection nodes and beam-column connection nodes are simple and easy to operate, and the layered assembly concept adopted enables the damaged components to be easily disassembled and replaced, and can be repaired in a short time return the building to normal use;

(5) The connection stiffness of the beam-column joints in the present invention can be selected according to the needs to reduce the mid-span deflection, and beam members of different cross-sections can also be selected, so that beam members can be selected on demand for different spans to achieve efficient utilization of materials .

(6) The node connection structure (column-column connection node, beam-column connection node) described in the present invention is a full-bolt assembly type node, and all components can be factory-produced and bolt-assembled on site, without on-site welding construction , which greatly reduces the construction difficulty, saves manpower and construction period, and can effectively improve the structural quality and construction level.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of the present invention;

Fig. 2 is the structural representation of embodiment 2 of the present invention;

Fig. 3 is a schematic structural diagram of a reinforcing member in Embodiment 2 of the present invention;

Fig. 4 is the structural representation of embodiment 3 of the present invention;

Fig. 5 is a schematic structural diagram of a reinforcing member in Embodiment 3 of the present invention;

Figure 6 is a schematic structural view of Embodiment 4 of the present invention;

Fig. 7 is a schematic structural diagram of a reinforcing member in Embodiment 4 of the present invention;

Figure 8 is a schematic structural view of Embodiment 5 of the present invention;

9 is a schematic structural diagram of a connection node in Embodiment 5 of the present invention;

Fig. 10 is a structural schematic diagram of the structural system with the node connection structure of the present invention.

Detailed ways

The present invention will be described in detail, clearly and completely below with reference to the accompanying drawings and specific embodiments. Apparently, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Fig. 1, the node connection structure that is used for the adjustable stiffness of layered assembled steel structure according to the present invention is embodiment 1, and embodiment 1 shows column-column node connection structure, comprising:

The upper steel column 1 and the lower steel column 2 are welded with flange plates 11 and 21 at the butt ends of the upper steel column 1 and the lower steel column 2;

The connecting node 3 has an upper flange plate 31 and a lower flange plate 32 welded on its upper and lower ends, and the upper and lower flange plates 31 and 32 are respectively connected to the butt ends of the upper steel column 1 and the lower steel column 2 The flange plates 11 and 21 are used to connect the upper steel column 1 and the lower steel column 2 as a whole.

Preferably, the connecting node 3 is two steel plates 33 intersecting to form a cross or an X-shaped cross-section, and its upper and lower ends are welded with an upper flange plate 31 and a lower flange plate 32.

Referring to Fig. 2 and Fig. 3, it shows Embodiment 2 of the present invention. In Embodiment 2, a reinforcement 4 is provided between the upper and lower flange plates 31, 32 of the connecting node 3, and the reinforcement 4 Both ends are respectively connected to the upper and lower flange plates 31, 32.

In this embodiment, the reinforcing member 4 is a U-shaped structure, and two sides thereof are provided with through holes for high-strength bolts 5 to pass through, and the upper and lower flange plates 31 and 32 are respectively connected by high-strength bolts 5 .

Moreover, in this embodiment, the length of both sides of the U-shaped structure of the reinforcing member 4 can meet the installation requirements of a high-strength bolt.

Referring to Fig. 4 and Fig. 5, it shows Embodiment 3 of the present invention. In Embodiment 3, the reinforcement 4 is U-shaped, and a side plate 41 is provided on one side thereof, and the U-shape of the reinforcement 4 Each side of the structure is provided with a mounting hole 42 that meets the mounting requirements of a high-strength bolt.

Described reinforcing member 4 among the present embodiment is on the structural basis of embodiment 2, and the side of its U-shaped structure is welded side plate 41, makes integral U-shaped structural member have greater rigidity and strength.

Referring to Fig. 6 and Fig. 7, it shows Embodiment 4 of the present invention. In implementation, 4, the reinforcement 4 is U-shaped, and a side plate 41 is provided on one side thereof, and the U-shape of the reinforcement 4 The two sides of the structure are respectively connected to the upper and lower flange plates 31, 32.

The reinforcing member 4 in this embodiment is based on the structure of embodiments 2 and 3, and the two sides of the U-shaped structure of the reinforcing member 4 are respectively provided with mounting holes 42 that can meet the installation requirements of two high-strength bolts. And a side plate 41 of corresponding size is welded on the side, so that the integral U-shaped member has greater rigidity and strength.

Preferably, the flange plates 11, 21 at the ends of the upper steel column 1 and the lower steel column 2 are connected with the upper flange plate 31 and the lower flange plate 32 of the connection node 3 using high-strength bolts 5.

Preferably, the reinforcement member 4 is connected with the upper and lower flange plates 31, 32 of the connection node 3 through high-strength bolts 5.

Preferably, the reinforcement member 4 is connected to the connection node 3 through high-strength bolts 5, and the upper and lower method of connecting the connection node 3 with the flange plates 11 and 21 at the ends of the upper and lower steel columns 1 and 2 The high-strength bolts connected by the blue plates 31 and 32 are shared.

Preferably, the upper steel column 1 and the lower steel column 2 are square steel pipes, round steel pipes, section steel composite columns or spliced columns.

Referring to Fig. 8, Fig. 9, it shows embodiment 5 of the present invention, and in embodiment 5, node connection structure described in the present invention is beam-column node connection structure, comprises:

The upper steel column 1 and the lower steel column 2 are welded with flange plates 11 and 21 at the butt ends of the upper steel column 1 and the lower steel column 2;

The connecting node 3 comprises two steel plates 33 intersecting to form a cross-shaped or X-shaped section, and the upper and lower ends of the cross-shaped or X-shaped are welded with an upper flange plate 31 and a lower flange plate 32, and the steel plates 33 and the upper 1, one side of the lower flange plates 31, 32 extend outwards to form a web connecting portion 331, an upper connecting portion 311, and a lower connecting portion 321; the butt ends of the upper steel column 1 and the lower steel column 2 The flange plates 11, 21 are respectively connected to the upper and lower flange plates 31, 32;

Steel girder 6, its upper flange 61, lower flange 62 and steel girder web 63 respectively connect the upper connection part 311, lower connection part 321 and web connection part 331 of the connection node 3.

Preferably, the connections between the steel beam 6 and the connection node 3 are all connected by high-strength bolts 5 .

Preferably, the steel girder 6 is an I-shaped steel girder, an H-shaped steel girder, an H-shaped steel beam with beading or a double groove-shaped composite steel girder.

Preferably, the upper connection part 311 and the lower connection part 321 of the connection node 3 are provided with connection through holes 3111, 3211 for the high-strength bolts 5 to pass through, and the connection through holes 3111, 3211 are oblong holes or large round holes.

Referring to Fig. 10, the present invention also provides a structural system with the described node connection structure, which includes a frame structure formed by several vertical load-bearing columns 10, lateral anti-side units 20 and prefabricated floor slabs 30; wherein,

Described vertical load-bearing column 10 comprises upper steel column 1, lower steel column 2 in described node connection structure, is connected as a whole by described connection node 3;

The lateral anti-side unit 20 includes the steel beam 6 connected to the connection node 3 in the node connection structure;

The prefabricated floor slab 30 is lapped on the steel beam 6 by bolts, and forms an integral body with the steel beam 6.

Preferably, the lateral anti-side unit 20 also includes an enclosure wall 7 or a support 8; the enclosure wall 7 or support 8 is respectively connected to the upper steel column 1 and the lower steel column 2 of the vertical load-bearing column 10 , the steel beam 6 connecting the node 3 or/and the lateral anti-side unit 20 .

The present invention is different from the traditional assembled steel structure system, and belongs to the layered assembled steel structure system, and on the basis of the ordinary layered assembled steel structure system, combined with the structure of the innovative column-column joint and beam-column joint, A steel structure system with adjustable stiffness and a choice of structural properties was developed.

The adjustable joint stiffness concept and structure proposed by the present invention can effectively reduce the number of types of parts and provide a flexible connection layout scheme; at the same time, the layered assembled joints are easy to replace and strengthen, improving the toughness and repairability of the structure; The layered assembled column-column node connection structure and beam-column node connection structure are fully applicable to the scenarios of standardized design, factory prefabrication, and on-site assembly, which reduce on-site welding operations, speed up construction, and ensure structural quality.

Finally, it should be noted that: the foregoing embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it still The technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be equivalently replaced; and these modifications or replacements are within the protection scope of the present invention, and do not deviate from the essence of the corresponding technical solutions. The scope of the technical solution of each embodiment of the present invention.

Claims (14)

1. A node connection structure with adjustable stiffness for layered fabricated steel structures, characterized in that it comprises: The upper steel column and the lower steel column are welded with flange plates at the butt ends of the upper steel column and the lower steel column; Connecting nodes, the upper and lower ends of which are welded with upper and lower flange plates, the upper and lower flange plates are respectively connected to the flange plates at the butt ends of the upper steel column and the lower steel column, so that the upper steel column, the lower steel column The steel columns are connected as one. 2. The node connection structure with adjustable stiffness for layered fabricated steel structures as claimed in claim 1, characterized in that: it also includes: Steel beams, which are I-shaped steel beams, H-shaped steel beams, H-shaped steel beams with curling edges, or double-slotted composite steel beams; The connection node is the intersection of two steel plates to form a cross-shaped or X-shaped cross-section; at least one steel plate in the intersecting steel plates and at least one side end of the upper and lower flange plates extend outward respectively to form a web connection part, an upper connection part, lower connection part; The upper and lower flanges of the steel beam and the web of the steel beam are respectively connected to the upper connection part, the lower connection part and the web connection part of the connection node. 3. The node connection structure with adjustable stiffness for layered fabricated steel structures according to claim 2, characterized in that the connections between the steel beams and the connection nodes are high-strength bolt connections. 4. The node connection structure with adjustable stiffness for layered fabricated steel structures as claimed in claim 2 or 3, characterized in that, the upper and lower flange plates of the connection node have an upper connection part and a lower connection part. A connection through hole for high-strength bolts to pass through is arranged on the upper part, and the connection through hole is a long round hole or a large round hole. 5. The node connection structure with adjustable stiffness suitable for layered assembled steel structures according to claim 1, characterized in that, the connection node is formed by crossing two steel plates to form a cross-shaped or X-shaped section. 6. As claimed in claim 1 or 2 or 3 or 4, the node connection structure suitable for layered assembled steel structures with adjustable stiffness is characterized in that, the upper and lower flange plates of the connection node are provided with There is a reinforcement, and the two ends of the reinforcement are respectively connected to the upper and lower flange plates. 7. The node connection structure with adjustable stiffness suitable for layered fabricated steel structures as claimed in claim 6, wherein the reinforcement member is a U-shaped structure, and its two sides are respectively connected to the upper and lower flange plate. 8. The node connection structure with adjustable stiffness suitable for layered assembled steel structures according to claim 6, wherein the reinforcement is U-shaped, and a side plate is provided on one side thereof, and the reinforcement The two sides of the U-shaped structure of the component are respectively connected to the upper and lower flange plates. 9. The node connection structure with adjustable stiffness suitable for layered assembled steel structures according to claim 1 or 2, characterized in that the flange plates at the ends of the upper and lower steel columns are connected to the connection nodes The upper and lower flange plates are connected by high-strength bolts. 10. The node connection structure with adjustable stiffness suitable for layered assembled steel structures according to claim 6, 7 or 8, characterized in that, the reinforcement member passes through the upper and lower flange plates of the connection node High-strength bolt connection. 11. The node connection structure applicable to layered assembled steel structures with adjustable stiffness as claimed in claim 6 or 7 or 8 or 9, characterized in that the reinforcement is connected to the connection node through high-strength bolts, In addition, the high-strength bolts used to connect the upper and lower flange plates of the connecting node with the flange plates at the ends of the upper and lower steel columns are shared. 12. The node connection structure with adjustable stiffness suitable for layered assembled steel structures according to any one of claims 1 to 11, characterized in that, the upper steel column and the lower steel column are square steel pipes and round steel pipes , steel composite column or splicing column. 13. The structural system with the node connection structure as claimed in claim 2, is characterized in that, comprising, a frame structure formed by several vertical load-bearing columns, lateral anti-side units and prefabricated floor slabs; wherein, The vertical load-bearing column includes an upper steel column and a lower steel column in the node connection structure, which are connected as a whole through the connection node; The lateral anti-side unit includes a steel beam connected to the connection node in the nodal connection configuration; The prefabricated floor slab is lapped on the steel beam by bolts, and forms an integral body with the steel beam. 14. The structural system according to claim 13, wherein the lateral anti-side unit further comprises an enclosure wall or support; the enclosure wall or support is respectively connected to the upper steel of the vertical load-bearing column Columns, lower steel columns, steel beams connecting nodes or/and transverse lateral elements.

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