A connection structure and assembled structure system

Abstract

The present application provides a connection structure and an assembled structure system, which relate to the field of building structures. The connection structure includes an upper steel column and a lower steel column. The upper steel column has a first connection part and a docking part located at the bottom of the first connection part. The lower steel column has a second connection part, and a positioning groove is provided on the top of the lower steel column. The docking part is inserted into the positioning groove, and the first connection part and the second connection part are arranged relative to each other. A connection unit is located between the first connection part and the second connection part, and the connection unit is detachably connected to the first connection part, and the connection unit is detachably connected to the second connection part. The docking part of the upper steel column is inserted into the positioning groove of the lower steel column, which can reduce the buckling damage caused by deflection at the connection between the upper steel column and the lower steel column during an earthquake; the connection unit is the main energy-consuming part and is the component that will be most severely damaged. After the earthquake, only the connection unit needs to be replaced, and the docking part is only slightly damaged or not damaged, which can protect the core part of the connection structure under the premise of ensuring the vertical bearing capacity.

Description

Technical Field

[0001] The present application relates to the field of building structures, and in particular to a connection structure and an assembled structure system. Background Art

[0002] At present, the research work on prefabricated structures mainly focuses on prefabricated reinforced concrete frame structure systems, and mainly focuses on the influence of the splicing method of beam-column components on the seismic performance of the splicing area and the overall structure. There is still insufficient research on how to strengthen the protection of the core parts of the connection structure of the prefabricated structure system. Summary of the invention

[0003] The embodiments of the present application provide a connection structure and an assembled structure system to improve the problem that the core parts of the connection structure of the current assembled structure system are not adequately protected.

[0004] In a first aspect, an embodiment of the present application provides a connection structure, including an upper steel column and a lower steel column. The upper steel column has a first connection portion and a docking portion located at the bottom of the first connection portion. The lower steel column has a second connection portion, a positioning groove is provided at the top of the lower steel column, the docking portion is inserted into the positioning groove, and the first connection portion is arranged opposite to the second connection portion. A connection unit is located between the first connection portion and the second connection portion, the connection unit is detachably connected to the first connection portion, and the connection unit is detachably connected to the second connection portion.

[0005] In the above technical solution, the butt joint of the upper steel column is inserted into the positioning groove of the lower steel column. When the connection structure experiences an earthquake, the upper steel column will be deflected relative to the lower steel column. The butt joint of the upper steel column is inserted into the positioning groove of the lower steel column, that is, the upper steel column is movable relative to the lower steel column. When the upper steel column deflects, one side of the bottom of the butt joint will be separated from the bottom wall of the positioning groove, and the other side of the bottom of the butt joint will abut against the bottom wall of the positioning groove to support the deflection of the upper steel column, which can reduce the buckling damage caused by the deflection at the connection between the upper steel column and the lower steel column; when the upper steel column deflects, the connection unit between the first connection part of the upper steel column and the second connection part of the lower steel column will bear the main bending stress, and will be the component that will be most severely damaged. Since the connection unit is detachably connected to the outer side of the butt joint of the upper steel column, only the connection unit located on the outer side of the butt joint needs to be replaced after the earthquake, and the butt joint of the upper steel column will only be slightly damaged or not damaged, which can achieve the controllability of the damaged part under the premise of ensuring the vertical bearing capacity and protect the core part of the connection structure.

[0006] In addition, the connection structure of the embodiment of the first aspect of the present application also has the following additional technical features:

[0007] In some embodiments of the first aspect of the present application, the connection unit includes a plurality of connection members circumferentially arranged outside the docking portion; the connection member is detachably connected to the first connection portion, and the connection member is detachably connected to the second connection portion.

[0008] In the above technical solution, multiple connectors are circumferentially arranged on the outside of the docking portion, so that the docking portion can be protected by the connectors on all sides. No matter which direction the upper steel column deflects, there are connectors that can withstand buckling failure, so that the docking portion can be better protected.

[0009] In some embodiments of the first aspect of the present application, the connecting member is detachably connected to the docking portion.

[0010] In the above technical solution, the connecting member can not only be detachably connected to the first connecting part and the second connecting part in the vertical direction, but also be detachably connected to the docking part, which can enhance the integrity of the structure and the protection of the docking part.

[0011] In some embodiments of the first aspect of the present application, the connecting member includes an external connecting part and an internal connecting part connected to the inner side of the external connecting part; the upper and lower ends of the external connecting part are respectively detachably connected to the first connecting part and the second connecting part; the internal connecting part is detachably connected to the docking part.

[0012] In the above technical solution, the connecting part includes an outer connecting part connected to the first connecting part and the second connecting part and an inner connecting part connected to the docking part. Both the outer connecting part and the inner connecting part can share the bending stress for the docking part, so that the connecting part can be more resistant to bending and can better protect the docking part.

[0013] In some embodiments of the first aspect of the present application, the external connection part includes a bottom plate, a top plate and an outer flange plate, the top plate and the bottom plate are connected via the outer flange plate; the top plate and the first connection part are detachably connected, and the bottom plate and the second connection part are detachably connected; the internal connection part includes two L-shaped angle steels connected to the inner side of the outer flange plate and spaced apart, and the L-shaped angle steels are detachably connected to the docking part.

[0014] In the above technical solution, when the outer connection part is connected to the first connection part and the second connection part, the bending resistance of the connection section between the upper steel column and the lower steel column can be enhanced; the inner connection part includes two L-shaped angle steels, and the inner connection part is set as an L-shaped angle steel so that the structure of the entire connecting piece is not too thick and heavy, but instead increases the weight of the entire connecting structure. By connecting the two L-shaped angle steels to the docking part, the connection relationship between the docking part and the connecting piece can be strengthened, so that the connecting piece can better bear the bending stress for the docking part, thereby better protecting the docking part.

[0015] In some embodiments of the first aspect of the present application, the L-shaped angle steel includes an angle steel web and an angle steel flange plate; the outer flange plate and the angle steel flange plate are connected through the angle steel web, the angle steel flange plate is detachably connected to the docking part, and a strip hole is opened on the angle steel web.

[0016] In the above technical solution, since the L-shaped angle steel is located between the outer flange plate and the butt joint, it is easy to deform during the bending process. Strip holes are opened on the web of the angle steel, which can provide deformation margin and deformation space for the deformation of the web of the angle steel, so that the connecting part has better energy dissipation performance.

[0017] In some embodiments of the first aspect of the present application, an embedded bolt is provided on the docking portion, and a first through hole for the embedded bolt to pass through is provided on the connecting piece.

[0018] In the above technical solution, embedded bolts are provided on the docking part, and a first through hole for the embedded bolts to pass through is provided on the connecting piece, which can facilitate the installation of the connecting piece on the docking part and can reduce the bolts brought to the construction site, providing convenience for construction.

[0019] In some embodiments of the first aspect of the present application, the docking portion is a square steel pipe connected to the first connecting portion, and the positioning groove is a square groove that matches the docking portion.

[0020] In the above technical solution, the butt joint is a square steel pipe, and the positioning groove is a matching square groove. When the butt joint is inserted into the positioning groove, the circumferential rotation of the butt joint can be limited, thereby providing connection stability for the connection structure and avoiding shear force and distortion caused by the circumferential rotation of the butt joint.

[0021] In some embodiments of the first aspect of the present application, the connection structure further includes at least one steel cable, both ends of each steel cable are respectively connected to the upper steel column and the lower steel column, and each steel cable is tensioned between the upper steel column and the lower steel column.

[0022] In the above technical solution, each steel cable is tensioned between the upper steel column and the lower steel column. When the upper steel column is deflected, the upper steel column can be reset under the action of the tensioning force of the steel cable, that is, the deflected docking part can be reinserted into the positioning groove, which can improve the seismic performance of the connecting structure and can be reset without too much manpower participation, reducing the difficulty of repair.

[0023] In some embodiments of the first aspect of the present application, both the first connecting portion and the second connecting portion are provided with a second through hole for the steel cable to pass through.

[0024] In the above technical solution, the first connecting part and the second connecting part are both provided with a second through hole for the steel cable to pass through, that is, the steel cable is tensioned inside the upper steel column and the lower steel column, which can better realize the self-reset of the upper steel column.

[0025] In some embodiments of the first aspect of the present application, the upper steel column also includes an upper column body, and the docking portion is connected to the upper column body via a first connecting portion.

[0026] In the above technical solution, the arrangement of the upper column body can enhance the vertical bearing capacity of the entire connecting structure.

[0027] In some embodiments of the first aspect of the present application, the upper column body is a cross-shaped steel column.

[0028] In the above technical solution, the upper column body is a cross-shaped steel column, which can not only enhance the vertical bearing capacity of the entire connection structure, but also has strong bending resistance.

[0029] In some embodiments of the first aspect of the present application, the first connecting portion is a plate-shaped structure.

[0030] In the above technical solution, the first connecting part is a plate-like structure, so that there is a sufficiently large connection contact area between the first connecting part and the connecting unit, so that the connection between the connecting unit and the first connecting part is more secure and can better protect the docking part.

[0031] In some embodiments of the first aspect of the present application, the lower steel column also includes a lower column body, the second connecting portion is a plate-like structure connected to the top of the lower column body; and the positioning groove is provided on the upper surface of the second connecting portion.

[0032] In the above technical solution, the second connecting part is a plate-like structure, so that there is a sufficiently large connection contact area between the second connecting part and the connecting unit, so that the connection between the connecting unit and the second connecting part is more secure and can better protect the docking part; and the positioning groove is provided on the second connecting part, so that the second connecting part can be connected to the connecting unit and can be inserted into the docking part on the upper steel column, which simplifies the structure of the lower steel column and reduces the parts of the lower steel column that can be damaged.

[0033] In a second aspect, an embodiment of the present application provides an assembled structural system, including a base and at least one connection structure provided by an embodiment of the first aspect, wherein a lower steel column is installed on the base.

[0034] In the above technical scheme, the prefabricated structural system includes the connection structure provided by the first aspect embodiment. The connection unit between the first connection part of the upper steel column and the second connection part of the lower steel column will bear the main bending stress and is the component that will be most severely damaged. After the earthquake, only the connection unit located on the outside of the docking part needs to be replaced. The docking part of the upper steel column will only be slightly damaged or not damaged. The controllability of the damaged part can be achieved while ensuring the vertical bearing capacity, thereby protecting the core part of the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of the connection structure provided by the embodiment of the first aspect of the present application;

[0037] Figure 2 A schematic diagram of a connection structure provided in an embodiment of the first aspect of the present application in an incompletely connected state;

[0038] Figure 3 It is the structural diagram of the upper steel column;

[0039] Figure 4 It is a structural schematic diagram of the docking part;

[0040] Figure 5 It is the structural diagram of the lower steel column;

[0041] Figure 6 A schematic structural diagram of a connecting piece provided in an embodiment of the first aspect of the present application.

[0042] Icon: 100-connection structure; 10-upper steel column; 11-first connection part; 111-second through hole; 12-jointing part; 121-embedded bolt; 13-upper column body; 20-lower steel column; 21-second connection part; 211-positioning groove; 22-lower column body; 30-connection unit; 31-connecting piece; 311-top plate; 312-bottom plate; 313-outer flange plate; 314-angle steel web; 3141-strip hole; 315-angle steel flange plate; 3151-first through hole; 40-steel cable. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship in which the product of the application is usually placed when in use, 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. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0047] Example

[0048] like Figure 1 , Figure 2As shown, the first embodiment of the present application provides a connection structure 100, and the connection structure 100 includes an upper steel column 10 and a lower steel column 20. The upper steel column 10 has a first connection portion 11 and a docking portion 12 located at the bottom of the first connection portion 11. The lower steel column 20 has a second connection portion 21, and a positioning groove 211 is provided on the top of the lower steel column 20. The docking portion 12 is inserted into the positioning groove 211, and the first connection portion 11 is arranged opposite to the second connection portion 21. A connection unit 30 is located between the first connection portion 11 and the second connection portion 21, and the connection unit 30 is detachably connected to the first connection portion 11, and the connection unit 30 is detachably connected to the second connection portion 21. The butt joint 12 of the upper steel column 10 is inserted into the positioning groove 211 of the lower steel column 20. When the connection structure 100 experiences an earthquake, the upper steel column 10 will deflect relative to the lower steel column 20. The butt joint 12 of the upper steel column 10 is inserted into the positioning groove 211 of the lower steel column 20, that is, the upper steel column 10 is movable relative to the lower steel column 20. When the upper steel column 10 deflects, one side of the bottom of the butt joint 12 will be separated from the bottom wall of the positioning groove 211, and the other side of the bottom of the butt joint 12 will abut against the bottom wall of the positioning groove 211 to support the deflection of the upper steel column 10, which can reduce the connection between the upper steel column 10 and the lower steel column 20. Buckling failure is caused by deflection; when the upper steel column 10 is deflected, the connecting unit 30 will bear the main bending stress between the first connecting part 11 of the upper steel column 10 and the second connecting part 21 of the lower steel column 20, and will be the component that will be most severely damaged. Since the connecting unit is detachably connected to the outer side of the docking part 12 of the upper steel column 10, only the connecting unit 30 located on the outer side of the docking part 12 needs to be replaced after the earthquake. The docking part 12 of the upper steel column 10 will only be slightly damaged or not damaged. The controllability of the damaged part can be achieved while ensuring the vertical bearing capacity, thereby protecting the core part of the connection structure 100.

[0049] Furthermore, the connection structure 100 also includes at least one steel cable 40, and the two ends of each steel cable 40 are respectively connected to the upper steel column 10 and the lower steel column 20, and each steel cable 40 is tensioned between the upper steel column 10 and the lower steel column 20. When the upper steel column 10 is deflected, the upper steel column 10 can be reset under the action of the tensioning force of the steel cable 40, that is, the deflected docking portion 12 is reinserted into the positioning groove 211, which can improve the seismic performance of the connection structure 100, and can be reset without too much manpower participation, reducing the construction difficulty. In this embodiment, the number of steel cables 40 is four. In other embodiments, the number of steel cables 40 can also be one, two, three, five or more than five as needed.

[0050] In this embodiment, if Figure 3 , Figure 4As shown, the upper steel column 10 includes a docking portion 12, a first connecting portion 11 and an upper column body 13. The docking portion 12 and the upper column body 13 are connected through the first connecting portion 11. The arrangement of the upper column body 13 can enhance the vertical bearing capacity of the entire connection structure 100. The structure of the upper column body 13 can be a cross-shaped steel column, an I-shaped steel column, an H-shaped steel column, a steel pipe column or a columnar structure with other cross-sectional forms. In this embodiment, the upper column body 13 is a cross-shaped steel column, which can not only enhance the vertical bearing capacity of the entire connection structure 100, but also has a strong bending resistance. Among them, the docking portion 12 and the first connecting portion 11, the upper column body 13 and the first connecting portion 11 can be connected by welding or other fixing methods. Of course, in some embodiments, the docking portion 12 and the first connecting portion 11, the upper column body 13 and the first connecting portion 11 can also be connected by bolts, screws or other detachable methods.

[0051] In this embodiment, the docking portion 12 is a square steel tube connected to the first connecting portion 11, and the positioning groove 211 is a square groove matched with the docking portion 12. When the docking portion 12 is inserted into the positioning groove 211, the circumferential rotation of the docking portion 12 can be limited, thereby providing the connection stability of the connection structure 100 and avoiding shear force and distortion caused by the circumferential rotation of the docking portion 12. Of course, the docking portion 12 can also be a circular tube or a tubular structure of other shapes except the square tube, and stiffening ribs can also be set in the tube to improve the strength and bearing capacity of the docking portion 12 itself.

[0052] In this embodiment, the first connection portion 11 is a plate-like structure, so that there is a sufficiently large connection contact area between the first connection portion 11 and the connection unit 30, so that the connection between the connection unit 30 and the first connection portion 11 is more firmly connected, and the docking portion 12 can be better protected. The first connection portion 11 is provided with a second through hole 111 for the steel cable 40 to pass through.

[0053] like Figure 5 As shown, the lower steel column 20 includes a second connection part 21 and a lower column body 22, wherein the second connection part 21 is a plate-like structure connected to the top of the lower column body 22; a positioning groove 211 is provided on the upper surface of the second connection part 21. The second connection part 21 is a plate-like structure, so that there is a sufficiently large connection contact area between the second connection part 21 and the connection unit 30, so that the connection between the connection unit 30 and the second connection part 21 is more firmly connected, and the docking part 12 can be better protected; and the positioning groove 211 is provided on the second connection part 21, so that the second connection part 21 can be connected to the connection unit 30 and inserted into the docking part 12 on the upper steel column 10, which simplifies the structure of the lower steel column 20 and reduces the parts of the lower steel column 20 that can be damaged.

[0054] In this embodiment, the structure of the lower column body 22 can be a cross-shaped steel column, an I-shaped steel column, an H-shaped steel column, a steel pipe column or a columnar structure with other cross-sectional forms. In this embodiment, the lower column body 22 is a cross-shaped steel column. The second connecting portion 21 is provided with a second through hole 111 for inserting the steel cable 40, wherein the second through hole 111 on the second connecting portion 21 corresponds one-to-one to the second through hole 111 on the first connecting portion 11. One end of each steel cable 40 is fixed, and the other end of each steel cable 40 is on the upper column body 13 and passes through the second through hole 111 on the first connecting portion 11 from the inside of the upper column body 13 in sequence, then passes through the inside of the docking portion 12, and then passes through the second through hole 111 on the second connecting portion 21, and finally fixed on the lower column body 22.

[0055] Furthermore, the connection unit 30 includes a plurality of connection members 31 circumferentially arranged outside the docking portion 12 ; the connection members 31 are detachably connected to the first connection portion 11 , and the connection members 31 are detachably connected to the second connection portion 21 .

[0056] Multiple connectors 31 are arranged circumferentially on the outside of the docking portion 12, so that the docking portion 12 can be protected by the connectors 31 on all sides. No matter which direction the upper steel column 10 deflects, there are connectors 31 that can withstand bending failure, so that the docking portion 12 can be better protected.

[0057] Since the butt joint 12 is a square steel pipe with four side surfaces, in this embodiment, there are also four connecting pieces 31 , and each side surface of the butt joint 12 corresponds to a connecting piece 31 .

[0058] In this embodiment, each connecting member 31 is detachably connected to the first connecting portion 11 and the second connecting portion 21 by means of bolts, screws, etc.

[0059] In this embodiment, each connecting member 31 is not only detachably connected to the first connecting portion 11 and the second connecting portion 21, but also detachably connected to the docking portion 12. The connecting member 31 is not only detachably connected to the first connecting portion 11 and the second connecting portion 21 in the vertical direction, but also detachably connected to the docking portion 12, which can enhance the protective effect of the connecting member 31 and the docking portion 12.

[0060] The docking portion 12 and the connecting member 31 are detachably connected by bolts, wherein the docking portion 12 is provided with embedded bolts 121, and the connecting member 31 is provided with first through holes 3151 for the embedded bolts 121 to pass through. Embedded bolts 121 are provided on the four sides of the docking portion 12, and the connecting member 31 corresponding to each side is provided with a first through hole 3151 for the embedded bolts 121 on the side of the corresponding docking portion 12 to pass through.

[0061] Bolts are embedded in the docking part 12. During installation, the embedded bolts 121 on the docking part 12 are inserted into the first through holes 3151 on the connecting piece 31, and the embedded bolts 121 extend out of the first through holes 3151 on the connecting piece 31. Then, nuts are screwed on the embedded bolts 121 extending out of the first through holes 3151 on the connecting piece 31 to achieve installation of the docking part 12 and the connecting piece 31. This makes it very convenient to install the connecting piece 31 on the docking part 12, and can reduce the number of bolts brought to the construction site, thereby providing convenience for construction.

[0062] In other embodiments, a connecting hole corresponding to the first through hole 3151 on the connecting member 31 may be directly provided on the docking portion 12, and the connection between the docking portion 12 and the connecting member 31 may be achieved by sequentially passing the bolts through the connecting hole on the docking portion 12 and the first through hole 3151 on the connecting member 31 and then tightening them with nuts.

[0063] Among them, Figure 6 As shown, the connector 31 includes an outer connector and an inner connector connected to the inner side of the outer connector; the upper and lower ends of the outer connector are detachably connected to the first connector 11 and the second connector 21 respectively; the inner connector is detachably connected to the docking portion 12. Both the outer connector and the inner connector can share the bending stress for the docking portion 12, so that the connector 31 can be more resistant to bending and can better protect the docking portion 12.

[0064] Optionally, the outer connecting part includes a bottom plate 312, a top plate 311 and an outer flange plate 313, the top plate 311 and the bottom plate 312 are connected through the outer flange plate 313, the bottom plate 312, the top plate 311 and the outer flange plate 313 form an I-shaped structure, when the outer connecting part is connected to the first connecting part 11 and the second connecting part 21, the bending resistance of the connecting section between the upper steel column 10 and the lower steel column 20 can be enhanced; the top plate 311 is detachably connected to the first connecting part 11, and the bottom plate 312 is detachably connected to the second connecting part 21. The inner connection part includes two L-shaped angle steels connected to the inner side of the outer flange plate 313 and spaced apart. The L-shaped angle steel is detachably connected to the docking part 12. The inner connection part is set as an L-shaped angle steel so that the structure of the entire connecting member 31 is not too thick and heavy, which increases the weight of the entire connecting structure 100. The connection between the docking part 12 and the connecting member 31 can be strengthened by connecting the two L-shaped angle steels to the docking part 12, so that the connecting member 31 can better share the bending stress for the docking part 12, thereby better protecting the docking part 12.

[0065] In this embodiment, the L-shaped angle steel includes an angle steel web 314 and an angle steel flange plate 315; the outer flange plate 313 and the angle steel flange plate 315 are connected through the angle steel web 314, the angle steel flange plate 315 is detachably connected to the docking portion 12, the angle steel web 314 is perpendicular to the angle steel flange plate 315, and a strip hole 3141 is provided on the angle steel web 314. Since the L-shaped angle steel is located between the outer flange plate 313 and the docking portion 12, it is easy to deform during the bending process. The strip hole 3141 is provided on the angle steel web 314, which can provide deformation margin and deformation space for the deformation of the angle steel web 314, so that the connector 31 has better energy dissipation performance.

[0066] In other embodiments, the inner connecting portion and the outer connecting portion may also be two mutually perpendicular plate structures.

[0067] In other embodiments, the connection unit 30 may also be other structural forms. For example, the connection unit 30 is a sleeve structure with an opening on the peripheral wall. The docking part 12 is embedded in the sleeve from the opening on the peripheral wall of the sleeve structure, so that the sleeve is sleeved on the outside of the docking part 12, and then the upper and lower ends of the sleeve structure are detachably connected to the first connection part 11 and the second connection part 21 respectively.

[0068] The installation method of the connection structure 100 of this embodiment is as follows:

[0069] (1) The upper column body 13, the first connecting portion 11 and the docking portion 12 are welded in sequence to form the upper steel column 10, and the docking portion 12 is inserted into the positioning groove 211 of the lower steel column 20 to complete the alignment and assembly of the upper steel column 10 and the lower steel column 20.

[0070] (2) Align the first through holes 3151 on the four connecting members 31 with the embedded bolts 121 on the docking portion 12 and allow the embedded bolts 121 to pass through the first through holes 3151, then tighten the nuts, connect each top plate 311 to the first connecting portion 11 by bolts, and connect each bottom plate 312 to the second connecting portion 21 by bolts, so as to achieve connection between the replaceable connecting members 31 and the upper steel column 10 and the lower steel column 20.

[0071] (3) One end of the steel cable 40 is fixed to the lower column body 22 with an anchor, and passes through the second through hole 111 on the second connecting portion 21, the docking portion 12, and the second through hole 111 on the first connecting portion 11 in sequence, and the other end is fixed to the anchor plate of the upper column body 13.

[0072] Under the action of earthquake force, the connector 31 buckles and fails, consuming a lot of energy. The docking part 12 is still in the elastic stage and does not undergo large plastic deformation. After the earthquake, the steel cable 40 resets the docking part 12, and then the damaged connector 31 is removed and replaced with a new connector 31. At the same time, the new steel cable 40 can be replaced as needed, thereby achieving rapid repair after the earthquake. A stronger connector 31 can also be replaced to ensure that the structural bearing capacity is equivalent to that before the earthquake.

[0073] The vertical bearing capacity between the upper column body 13 and the lower column body 22 is jointly borne by the docking portion 12 and the connecting member 31. The docking portion 12 is directly inserted into the positioning groove 211 and can resist shearing together with the connecting member 31. The bending bearing capacity can be provided by the replaceable connecting member 31. This connection can ensure that the bending moment borne by the docking portion 12 is small under the action of an earthquake, and most of the earthquake energy is consumed by the peripheral replacement connecting member 31, which truly realizes the controllability of the damage position of the structure under the action of an earthquake. In addition, since the top plate 311 and the bottom plate 312 of the replacement connecting member 31 are thicker than the outer flange plate 313, local buckling is prevented.

[0074] The second aspect of the present application provides an assembled structural system, including a base and at least one connection structure 100 provided by an embodiment of the first aspect, and a lower steel column 20 is installed on the base. The assembled structural system includes the connection structure 100 provided by the embodiment of the first aspect, and the connection unit 30 between the first connection part 11 of the upper steel column 10 and the second connection part 21 of the lower steel column 20 will bear the main bending stress and is the component that will be most severely damaged. After the earthquake, only the connection unit 30 located outside the docking part 12 needs to be replaced, and the docking part 12 of the upper steel column 10 will only be slightly damaged or not damaged. The controllability of the damaged part can be achieved while ensuring the vertical bearing capacity, and the core part of the connection structure 100 can be protected.

[0075] Generally, in order to describe the earthquake resistance of building structures, earthquakes are divided into three levels of intensity, namely, small earthquakes, medium earthquakes, and large earthquakes with increasing intensity. The specific conditions of the connection structure 100 and the prefabricated structure system in this embodiment after being affected by small earthquakes, medium earthquakes, and large earthquakes of different intensity are as follows:

[0076] During a minor earthquake, the docking portion 12 and the multiple replaceable connectors 31 connected thereto work together to provide the structure with lateral bending stiffness and reduce inter-layer displacement. The docking portion 12 and the multiple detachable connectors 31 on the periphery are both in an elastic state, meeting the seismic fortification goal of minor earthquakes, i.e., "no damage caused by minor earthquakes."

[0077] During a moderate earthquake, the multiple detachable connectors 31 on the periphery deform significantly, consuming most of the earthquake energy and controlling the inter-layer displacement of the structure. The docking portion 12 remains in an elastic state, meeting the seismic fortification goal of a moderate earthquake, i.e., "repairable during a moderate earthquake."

[0078] During a major earthquake, the inter-layer displacement is too large, and the multiple detachable connectors 31 on the periphery are severely damaged, dissipating most of the earthquake energy, so that the docking portion 12 is protected to a certain extent. The structure still has a certain vertical bearing capacity and will not collapse, thus meeting the seismic fortification goal of "not collapsing in a major earthquake" for major earthquakes.

[0079] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A connection structure, characterized in that: include: An upper steel column, the upper steel column having a first connecting portion and a docking portion located at the bottom of the first connecting portion; A lower steel column, wherein the lower steel column has a second connecting portion, a positioning groove is provided on the top of the lower steel column, the docking portion is inserted into the positioning groove, and the first connecting portion is arranged opposite to the second connecting portion; and a connecting unit located between the first connecting portion and the second connecting portion, wherein the connecting unit is detachably connected to the first connecting portion and the connecting unit is detachably connected to the second connecting portion; The connection unit includes a plurality of connection members circumferentially arranged outside the docking portion; the connection member is detachably connected to the first connection portion, and the connection member is detachably connected to the second connection portion; The connecting member is detachably connected to the docking portion, and the connecting member includes an external connecting portion and an internal connecting portion connected to the inner side of the external connecting portion; the upper and lower ends of the external connecting portion are detachably connected to the first connecting portion and the second connecting portion respectively; the internal connecting portion is detachably connected to the docking portion; The outer connecting part comprises a bottom plate, a top plate and an outer flange plate, wherein the top plate is connected to the bottom plate via the outer flange plate; the top plate is detachably connected to the first connecting part, and the bottom plate is detachably connected to the second connecting part; the inner connecting part comprises two L-shaped angle steels connected to the inner side of the outer flange plate and spaced apart, and the L-shaped angle steels are detachably connected to the butt joint; The connection structure also includes at least one steel cable, two ends of each steel cable are respectively connected to the upper steel column and the lower steel column, and each steel cable is tensioned between the upper steel column and the lower steel column.

2. The connection structure according to claim 1, characterized in that: The L-shaped angle steel comprises an angle steel web plate and an angle steel flange plate; The outer flange plate and the angle steel flange plate are connected via the angle steel web plate, the angle steel flange plate is detachably connected to the butt joint, and strip holes are provided on the angle steel web plate.

3. The connection structure according to any one of claims 1 to 2, characterized in that: The butting portion is provided with embedded bolts, and the connecting piece is provided with first through holes for the embedded bolts to pass through.

4. The connection structure according to claim 1, characterized in that: The docking portion is a square steel pipe connected to the first connecting portion, and the positioning groove is a square groove matched with the docking portion.

5. An assembled structural system, characterized in that: It comprises a base and at least one connecting structure according to any one of claims 1 to 4, wherein the lower steel column is installed on the base.

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