Connection structure for steel structure building and installation method thereof

Abstract

The application relates to the technical field of steel structure construction, and particularly discloses a connecting structure for steel structure buildings and a mounting method thereof, which is used for assembling and combining cross beams and stand columns; the connecting structure comprises an assembly column, a mounting seat which is inserted and matched with the end of the assembly column and connected with the end of a stand column, and a beam connecting assembly which is arranged at the end of a cross beam and connected with the assembly column; the assembly column and the stand column are coaxially arranged. The mounting method is disclosed; the application can effectively improve the assembly efficiency and precision of the cross beam and the stand column, enhance the bearing capacity of the connecting joint, and ensure the stability and safety of the building structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel structure construction, in particular to a connecting structure for steel structure building and a mounting method thereof. BACKGROUND

[0002] In modern steel structure buildings, the design and installation of connecting nodes are crucial for the stability and safety of the overall structure. However, there are several problems in the prior art that need to be solved when connecting and assembling the columns and beams.

[0003] Firstly, the installation efficiency of the beam is low; the traditional installation method requires the beam to be lifted smoothly, and it must be connected with the connecting nodes at both ends at the same time to be assembled. This not only increases the construction time and difficulty, but also requires a large amount of manpower and equipment cooperation, resulting in low construction efficiency. At the same time, due to the need to connect both ends at the same time, it is difficult to ensure the accuracy of the assembly, which may cause deviation of the installation position of the beam and affect the quality of the overall structure.

[0004] Secondly, the traditional connecting node has safety hazards for the fixation of the beam end; at present, the method of directly fixing the beam end by bolts is generally used. This fixing method is prone to fracture of the beam at the connecting node position when bearing a large load, which seriously affects the safety and service life of the structure. Once the beam is fractured at the connecting node, it will not only affect the overall stability of the building, but also may cause serious safety accidents.

[0005] Finally, the installation of the column cannot guarantee the accurate positioning of the multi-layer structure; in the prior art, the installation of the column often lacks effective positioning measures, which leads to easy deviation of the columns of different layers; such deviation will cause unstable transmission of vertical load between the columns of different layers, and may cause eccentric compression and other problems, further affecting the overall safety and durability of the building; in addition, serious column deviation will also affect the perpendicularity of the building, leading to structural deformation and reduction of use function. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a connecting structure for steel structure building and a mounting method thereof.

[0007] The solution adopted by the present application to solve the technical problem is:

[0008] A connecting structure for steel structure building, used for assembling and combining beams and columns; comprising an assembly column, a mounting seat connected with the end of the assembly column and the end of the column, and a beam connecting assembly provided at the end of the beam and connected with the assembly column; the assembly column and the column are coaxially arranged.

[0009] In some possible embodiments, the mounting base comprises a mounting plate connected with the column, a positioning seat arranged on the side of the mounting plate away from the column and coaxially arranged with the column, and a plurality of groups of positioning bosses arranged on the side of the mounting plate away from the column and outside the positioning seat;

[0010] In some possible embodiments, the assembly column comprises a column body and a connecting seat arranged outside the column body and used in cooperation with the mounting base;

[0011] The connecting seat is provided with a positioning groove in plug-in cooperation with the positioning boss, and the end of the column body is provided with a plug-in groove used in cooperation with the positioning seat.

[0012] In some possible embodiments, the connecting seat comprises a plurality of groups of positioning protrusions used in cooperation with the positioning boss and arranged on the outer side surface of the assembly column;

[0013] The positioning protrusions comprise two groups of assembly plates arranged axially along the assembly column, and a connecting plate used for connecting the two groups of assembly plates and cooperating with the two groups of assembly plates to form the positioning groove; the assembly plates are connected with the outer side surface of the positioning seat; a cavity is formed between the two adjacent groups of positioning protrusions, and the cavity is located on the same outer side surface of the assembly column as the beam connecting assembly.

[0014] In some possible embodiments, the beam connecting assembly comprises a connecting piece arranged on the same side of the cavity and connected with the column body, and an extension piece connected with the connecting piece and the assembly column respectively.

[0015] In some possible embodiments, the connecting piece comprises a positioning plate arranged in one-to-one correspondence with the assembly plate and connected with the column body, and a fixing piece arranged in a fixing cavity formed by the two groups of positioning plates on the same outer side surface of the assembly column and connected with the extension piece; the fixing piece is connected with the positioning plate; the end of the cross beam is connected with the fixing piece and extends into the fixing cavity.

[0016] In some possible embodiments, the extension piece comprises a side plate abutting and connected with the outer side surface of the assembly column, and a support plate arranged on the side of the side plate away from the assembly column;

[0017] The fixing piece comprises a bottom plate connected with the side plate and on the same plane, a wing plate arranged on the side of the bottom plate away from the assembly column and forming a U-shaped cavity, and a plurality of groups of connecting sleeves arranged equidistantly along the assembly column in the axial direction and used for connecting the wing plate, the cross beam and the positioning plate; the bottom plate is connected with the end surface of the cross beam;

[0018] One end of the cross beam penetrates through the positioning plate and is connected with the wing plate by the connecting sleeve and inserted into the U-shaped cavity; the support plate is arranged above the wing plate and forms a gap between the wing plate.

[0019] In some possible implementation manners, the connecting sleeve comprises a supporting sleeve arranged on the cross beam, and a positioning bolt sleeved in the supporting sleeve; a fixed hinge base A is arranged at the bottom of the cross beam and close to one end of the assembly column; the fixed hinge base A is located in a fixed cavity and connected with two groups of positioning plates.

[0020] In some possible implementation manners, the beam connecting assembly further comprises a diagonal brace having one end connected with the bottom of the cross beam and the other end hingedly connected with the assembly column; a fixed hinge base B connected with the diagonal brace is arranged on the assembly column, and a movable hinge base connected with the diagonal brace is arranged at the bottom of the cross beam.

[0021] In some possible implementation manners, the connecting bases are two groups and symmetrically arranged.

[0022] The bottom end of the assembly column is connected with the column arranged below, the positioning base on the mounting base is inserted into the insertion slot, the positioning boss is inserted into the positioning slot, and all the positioning platforms are sequentially connected by bolts;

[0023] The beam connecting assembly is connected with the end of the cross beam, the beam connecting assembly is inserted into the fixed cavity, the fixed hinge base A is connected with the positioning plate by the pin bolt, and the position of the cross beam is adjusted;

[0024] The positioning plate, the wing plate and the cross beam are fixed by the positioning bolt, and the assembly column and the cross beam are connected by the diagonal brace.

[0025] The bottom end of the assembly column is connected with the column arranged above.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] By adopting the connecting mode of the fixed hinge base A and the pin bolt between the end of the cross beam and the assembly column, the cross beam can rotate around the pin bolt, so that the one end is allowed to be fixed first and then the other end is gradually connected during the assembly of the cross beam, thereby simplifying the installation process of the cross beam, eliminating the need for simultaneous connection of both ends, and improving the operability and accuracy of installation.

[0028] By connecting the beam connecting member and the assembly column in the transverse and longitudinal directions, the present application realizes double fixation of the corresponding cross beam, improves the bearing capacity of the cross beam and the assembly column connection node, effectively avoids the risk of fracture of the cross beam at the connection node due to excessive load, and improves the safety and durability of the structure.

[0029] By arranging the diagonal brace to connect the cross beam and the assembly column, the diagonal brace can effectively share the load of the cross beam, further improving the stability of the connection between the cross beam and the assembly column.

[0030] The application enables accurate positioning of the stand during installation, realizes accurate butt joint of the stand and the assembly column of each layer, avoids the problem of misplacement between layers, ensures stable transmission of vertical load between the stands of each layer, and enhances the stability and safety of the whole building. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the application;

[0032] Figure 2 It is a structural schematic diagram of the assembly column in the application;

[0033] Figure 3 It is a structural schematic diagram of the beam connecting assembly in the application;

[0034] Figure 4 It is a structural schematic diagram of the mounting seat in the application;

[0035] Figure 5 It is a sectional view of the mounting seat in the application;

[0036] Figure 6 It is a schematic diagram of the connection relationship of the assembly column, the beam connecting assembly and the connecting seat in the application;

[0037] Figure 7 It is a structural schematic diagram of the cross beam, the fixed hinge seat A and the movable hinge seat in the application;

[0038] Wherein: 1-assembly column, 11-column body, 12-connecting seat, 120-insertion slot, 121-positioning slot, 122-assembly plate, 123-connecting plate, 124-supporting rib plate, 2-mounting seat, 21-mounting plate, 22-positioning seat, 23-positioning boss, 3-beam connecting assembly, 31-connecting piece, 310-positioning plate, 311-bottom plate, 312-wing plate, 313-connecting sleeve, 32-extending piece, 321-side plate, 322-supporting plate, 33-fixed hinge seat A, 34-inclined support, 35-fixed hinge seat B, 36-movable hinge seat, 100-stand, 200-cross beam. DETAILED DESCRIPTION

[0039] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediary; they can refer to internal communication between two components or interactions between two components. The terms "first," "second," and similar terms mentioned in this application do not denote any order, quantity, or importance; they are simply used to distinguish between different components. Similarly, terms such as "one" or "a" do not indicate a quantitative limitation; rather, they indicate the presence of at least one. In the implementation of this application, "and / or" describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more. For example, "plurality" refers to two or more positioning posts. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0040] The present invention is described in detail below.

[0041] like Figures 1-7 As shown;

[0042] A connection structure for steel structure buildings, used for assembling and connecting columns 100 with columns 100, and columns 100 with beams 200; it includes an assembly column 1, a mounting seat 2 that is plugged into the end of the assembly column 1 and connected to the end of the column 100, and a beam connection assembly 3 arranged at the end of the beam 200 and connected to the assembly column 1; the assembly column 1 and the column 100 are coaxially arranged.

[0043] Specifically, the mounting seat 2 provided at the end of the column 100 is used to connect with the assembly column 1, and the connection between the column 100 and the beam 200 is realized through the beam connection component 3; the cooperation between the mounting seat 2 and the assembly column 1 will effectively improve the coaxiality of the two groups of columns 100 after connection, and no offset will occur, avoiding the situation of biased pressure; at the same time, through the connection between the beam connection component 3 and the assembly column 1, the beam 200 is double fixed in the horizontal and vertical directions; the bearing capacity of the connection between the beam 200 and the column 100 is improved, and the risk of fracture of the beam 200 at the connection node due to excessive load is effectively avoided, thereby improving the safety and durability of the structure.

[0044] In some possible embodiments, the mounting base 2 includes a mounting plate 21 coaxially connected to the column 100 and mounted on the end of the column 100, a positioning base 22 disposed on a side of the mounting plate 21 away from the column 100 and coaxially disposed with the column 100, and multiple groups of positioning bosses 23 disposed on the same side as the positioning base 22 and outside the positioning base 22;

[0045] The inner side of the plurality of positioning bosses 23 will form a concave cavity, the positioning seat 22 is located in the concave cavity, and a groove will be formed between the same two groups of positioning bosses 23;

[0046] In some possible embodiments, the assembly column 1 comprises a column body 11 and a connecting seat 12 arranged outside the column body 11 and used in cooperation with the mounting seat 2;

[0047] The connecting seat 12 is provided with a positioning groove 121 for plug-in cooperation of the positioning boss 23, and the end of the column body 11 is provided with a plug-in groove 120 used in cooperation with the positioning seat 22.

[0048] The plug-in groove 120 is plug-in cooperated with the positioning seat 22, preferably, the positioning seat 22 is cross-shaped, and the plug-in groove 120 is also cross-shaped; thus, the rotation of the stand column 100 around the axis after being mounted on the assembly column 1 is effectively avoided; the positioning groove 121 is plug-in cooperated with the positioning boss 23 and connects the positioning boss 23 and the assembly column 1 to form an integral whole;

[0049] In some possible embodiments, the connecting seat 12 comprises a plurality of positioning bosses arranged outside the assembly column 1 and used in cooperation with the positioning boss 23; the positioning bosses are arranged one by one in correspondence with the positioning boss 23 and are plug-in cooperated;

[0050] The positioning boss comprises two groups of assembly plates 122 arranged outside the column body 11 and perpendicular to each other in the projection on the horizontal plane, and a connecting plate 123 used for connecting the two groups of assembly plates 122 and cooperating with the two groups of assembly plates 122 to form the positioning groove 121; the assembly plate 122 is connected with the outer side of the positioning seat 22; the cavities are formed between the adjacent two groups of positioning bosses, and the beam connecting assembly 3 is located on the same outer side of the assembly column 1.

[0051] The connecting plate 123 is horizontally arranged and connected with the bottom of the two groups of assembly plates 122, and the two groups of assembly plates 122 are vertically arranged on the connecting plate 123;

[0052] Further, the supporting rib plate 124 connected with the outer side of the column body 11 is arranged at the bottom of the connecting plate 123, the supporting rib plate 124 is in a triangular structure, and the two straight edges of the supporting rib plate 124 are fixedly connected with the bottom surface of the connecting plate 123 and the outer side of the column body 11;

[0053] Each group of assembly plates 122 is provided with a connecting through hole, all the positioning bosses and the assembly plates 122 are connected to form an integral whole through bolts, so as to realize the transverse and longitudinal connection and fixation of the stand column 100 and the column body 11, and the movement of the positioning boss 23 along the axial direction is limited by the connecting plate 123, so as to realize the coaxial connection of the stand column 100 and the assembly column 1;

[0054] When the assembly column 1 is used to connect two columns 100, a slot 120 coaxial with the assembly column 1 and a connecting seat 12 are provided at both ends of the assembly column 1, thereby realizing coaxial positioning connection of the columns 100 in the vertical direction, avoiding the deviation of the columns 100, and realizing precise positioning of multiple columns 100 on the same axis.

[0055] In some possible implementations, the beam connection assembly 3 includes a connection member 31 disposed on the same side as the cavity and connected to the column body 11 , and an extension member 32 respectively connected to the connection member 31 and the assembly column 1 .

[0056] Specifically, the extension piece 32 is connected to the assembly column 1 through a positioning connection bolt arranged along the axis of the crossbeam 200;

[0057] The connecting member 31 is connected to the assembly column 1 by a horizontally arranged positioning bolt whose axis is perpendicular to the axial direction of the cross beam 200. Since the extension member 32 and the connecting member 31 are connected to each other as a whole, the beam connection assembly 3 is fixed in the horizontal and vertical directions.

[0058] In some possible embodiments, the connecting member 31 includes a positioning plate 310 that is arranged in a one-to-one correspondence with the assembly plate 122 and connected to the column body 11, and a fixing member that is located in a fixing cavity formed by two groups of positioning plates 310 on the same outer side of the assembly column 1 and connected to the extension member 32; the fixing member is connected to the positioning plate 310; the end of the beam 200 is connected to the fixing member and extends into the fixing cavity, and through the connection between the fixing member and the positioning plate 310 and the connection between the extension member and the outer side of the column body, the beam is positioned and fixed in the horizontal and vertical directions, thereby avoiding the horizontal displacement of the beam.

[0059] In some possible embodiments, the extension member 32 includes a side plate 321 that is in contact with and connected to the outer side of the assembly column 1, and a support plate 322 that is installed on a side of the side plate 321 away from the assembly column 1; the side plate 321 is connected to the fixing member;

[0060] The fixing member includes a bottom plate 311 connected to the side plate 321 and on the same surface, a wing plate 312 installed on the side of the bottom plate 311 away from the assembly column 1 and forming a U-shaped cavity, and a plurality of connecting sleeves 313 arranged at equal intervals along the axial direction of the assembly column 1 and used to connect the wing plates 312, the crossbeam 200, and the positioning plate 310; the bottom plate 311 is connected to the end surface of the crossbeam 200;

[0061] One end of the crossbeam 200 is inserted into the U-shaped cavity and connected to the wing plate 312 through the connecting sleeve 313 ; the support plate 322 is located above the wing plate 312 and a gap is formed between the support plate 322 and the wing plate 312 .

[0062] The connecting sleeve 313 comprises a supporting sleeve arranged on the cross beam 200, and a positioning bolt sleeved in the supporting sleeve; the axis of the supporting sleeve is perpendicular to the axis of the cross beam 200, and the axis of the supporting sleeve is arranged horizontally after being assembled in place.

[0063] The U-shaped cavity is used for mounting the end of the cross beam 200; when the cross beam 200 is an H-shaped steel beam, the upper flange of the cross beam 200 is inserted into the gap formed by the supporting plate 322 and the wing plate 312.

[0064] When the cross beam 200 is connected with the connecting piece 31, the end of the cross beam 200 is first inserted into the U-shaped cavity, and then the connecting piece 31 is connected with the cross beam 200 by using one end of the positioning bolt to pass through the hole on the positioning plate 310 and the hole on the wing plate 312; and then the bottom plate 311 is welded with the end surface of the cross beam 200.

[0065] The cross beam 200 is provided with a hole through which the supporting sleeve passes, the positioning bolt passes through the positioning plate 310 and the wing plate 312 and then enters the supporting sleeve and passes out from the other end of the supporting sleeve and extends to the other set of positioning plates 310; the connection between the connecting piece 31 and the cross beam 200 is realized by welding the bottom plate 311 with the end surface of the cross beam 200, that is, the positioning of the cross beam 200 in the horizontal direction is realized.

[0066] After the beam connecting assembly 3 is connected with the cross beam 200, the part is inserted into the fixing cavity, the side plate 321 is connected with the column body 11 by a bolt, so that the positioning of the cross beam 200 in the axial direction is realized, and the connection between the cross beam 200 and the column body 11 is completed; the axis direction of the bolt is parallel to the axis direction of the cross beam 200; the column body 11 is provided with a hole communicating with the insertion slot 120, and the hole and the side plate 321 are connected by the bolt.

[0067] In some possible embodiments, a fixed hinge base A33 is arranged at the bottom of the cross beam 200 and close to one end of the assembled column 1; after being assembled in place, the fixed hinge base A33 is located in the fixing cavity and connected with the two sets of positioning plates 310.

[0068] The fixed hinge base A33 is arranged at the bottom of the end of the cross beam 200, and when the cross beam 200 is connected with the assembly column 1, the fixed hinge base A33 is located in the fixed cavity and below the connecting piece 31. The positioning plate 310 is connected with the fixed hinge base A33 through a pin bolt, the axis of the pin bolt is perpendicular to the axis of the cross beam 200, and after the cross beam 200 and the assembly column 1 are assembled in place, the pin bolt is arranged horizontally. The fixed hinge base A33 can be flipped around the axis of the pin bolt, so that the cross beam 200 is hinged with the assembly column 1. When the cross beam 200 and the two assembly columns 1 (the assembly columns 1 located at the two ends of the cross beam 200) are assembled by using the connection mode, one end of the cross beam 200 is assembled to the connecting node of the corresponding assembly column 1, and the fixed hinge base A33 and the positioning plate 310 are hinged. Then the same operation is performed on the other end of the cross beam 200 and the connecting node of the other assembly column 1. Compared with the traditional assembly mode, the assembly efficiency of the cross beam can be effectively improved. The beam connecting assembly 3 is used to realize the connection with the assembly column 1, so that the one end of the cross beam 200 is fixed first, and then the other end is gradually connected, which simplifies the installation process of the cross beam 200, and the two ends are no longer needed to be connected at the same time, thereby improving the operability and accuracy of the installation. The other end of the cross beam 200 is installed in the same way, which effectively reduces the dependence on large hoisting equipment and a large number of labor, improves the construction efficiency, and reduces the increase of structural stress caused by installation.

[0069] After the two ends of the cross beam 200 are connected in place, the beam connecting assembly 3 is connected and fixed with the assembly column 1.

[0070] In some possible embodiments, the beam connecting assembly 3 further comprises an inclined brace 34 connected at one end with the bottom of the cross beam 200 and hinged at the other end with the assembly column 1. A fixed hinge base B35 connected with the inclined brace 34 is arranged on the assembly column 1, and a movable hinge base 36 connected with the inclined brace 34 is arranged at the bottom of the cross beam 200.

[0071] The arrangement of the inclined brace 34, the fixed hinge base B35 and the movable hinge base 36 effectively improves the bearing effect of the cross beam 200. Further, a pad plate is fixedly connected to the movable hinge base 36, the pad plate is attached to the bottom surface of the cross beam 200, holes are arranged on the bottom surface of the cross beam 200 and the pad plate in a relative arrangement, and a positioning screw rod is inserted into the holes to realize the fixed combination of the movable hinge base 36 and the cross beam 200, and facilitate the quick disassembly and assembly of the inclined brace 34 assembly and the cross beam 200.

[0072] In assembling, after the whole formed by the end of the cross beam 200 and the connecting piece 31 and the extension piece 32 is inserted into the fixing cavity, the fixing hinge base A33 is connected with the positioning plate 310 through the pin bolt, and then the other end of the cross beam 200 is assembled; through the connecting mode of the fixing hinge base A33 and the pin bolt between the one end of the cross beam 200 and the assembling column 1, the cross beam 200 can rotate around the pin bolt, and the one end can be fixed first when the cross beam 200 is installed, and then the other end is gradually connected, so that the installation process of the cross beam 200 is simplified, and the two ends need not be connected at the same time, and the operation and accuracy of installation are improved.

[0073] The two groups of cross beams 200 are installed in the same mode, the dependence on large hoisting equipment and a large number of manpower is effectively reduced, and the construction efficiency is improved; and the increase of structural stress caused by installation is reduced.

[0074] In the application, the connecting seat 12 can be one group or two groups; when the top end of the assembling column 1 is not installed with the stand column 100, the top surface is not provided with the connecting seat 12.

[0075] In the application, the connecting seat 12, the positioning plate 310, the column body 11 and the supporting rib plate 124 are processed in a unified casting (hot rolling) mode, so that the overall strength of the structure is ensured while the processing efficiency is ensured.

[0076] An installation method of the connecting structure for a steel structure building according to the above, specifically comprising the following steps:

[0077] The bottom end of the assembling column 1 is connected with the stand column 100 arranged below, the positioning seat 22 on the mounting seat 2 is inserted into the insertion slot 120, the positioning boss 23 is inserted into the positioning slot 121, and all the positioning platforms are sequentially connected through bolts;

[0078] The beam connecting assembly 3 is connected with the end of the cross beam 200, the beam connecting assembly 3 at one end is inserted into the fixing cavity, the fixing hinge base A33 is connected with the positioning plate 310 through the pin bolt, and the position of the cross beam 200 is adjusted;

[0079] The other end beam connecting assembly 3 is inserted into the fixing cavity on the other assembling column 1, and the fixing hinge base A33 is connected with the positioning plate 310 through the pin bolt;

[0080] The positioning plate 310, the wing plate 312 and the cross beam 200 are fixed through the positioning bolt, and the assembling column 1 and the cross beam 200 are connected through the inclined support 34;

[0081] The bottom end of the assembling column 1 is connected with the stand column 100 arranged above.

[0082] The application is not restricted to the foregoing specific embodiments. The application extends to any novel one, or any novel combination, of the features disclosed in this specification, and to any novel method or process disclosed in this specification or any novel combination thereof.

Claims

1. A connection structure for steel structure buildings, used for assembling beams and columns; characterized in that: The cam is connected to the end of the column by a plurality of means for sliding the cam into engagement with the end of the column, and the cam is connected to the end of the column by a plurality of means for sliding the cam into engagement with the end of the column. The positioning protrusions include two sets of assembly plates arranged along the axial direction of the assembly column, and a connecting plate for connecting the two sets of assembly plates and cooperating with the two sets of assembly plates to form a positioning groove; the assembly plates are connected to the outer side of the positioning seat; a cavity is formed between the two adjacent sets of positioning protrusions, and the cavity and the beam connection assembly are located on the same outer side of the assembly column; The beam connection assembly includes a connection piece provided on the same side as the chamber and connected to the column body, and an extension piece connected to the connection piece and the assembly column respectively; The connecting part includes a positioning plate that is arranged in a one-to-one correspondence with the assembly plate and connected to the column body, and a fixing part that is located in a fixing cavity formed by two groups of positioning plates on the same outer side of the assembly column and connected to the extension part; the fixing part is connected to the positioning plate; the end of the beam is connected to the fixing part and extends into the fixing cavity.

2. A connection structure for steel structure buildings according to claim 1, characterized in that: The extension piece includes a side plate that fits and is connected to the outer side of the assembly column, and a support plate that is installed on a side of the side plate away from the assembly column; The fixing member includes a bottom plate connected to the side plate and on the same surface as the side plate, a wing plate installed on the side of the bottom plate away from the assembly column and forming a U-shaped cavity, and a plurality of connecting sleeves arranged at equal intervals along the axial direction of the assembly column and used to connect the wing plate, the crossbeam, and the positioning plate; the bottom plate is connected to the end face of the crossbeam; One end of the crossbeam passes through the positioning plate and is inserted into the U-shaped cavity and is connected to the wing plate through a connecting sleeve; the support plate is located above the wing plate and a gap is formed between the support plate and the wing plate.

3. A connection structure for steel structure buildings according to claim 2, characterized in that: The connecting sleeve includes a supporting sleeve arranged on the beam and a positioning bolt sleeved in the supporting sleeve; a fixed hinge seat A is arranged at the bottom of the beam and at one end close to the assembly column; the fixed hinge seat A is located in the fixed cavity and connected to the two sets of positioning plates.

4. The connection structure for steel structure buildings according to claim 1, characterized in that: The beam connection assembly also includes a diagonal brace with one end connected to the bottom of the beam and the other end hinged to the assembly column; a fixed hinge seat B connected to the diagonal brace is provided on the assembly column, and a movable hinge seat connected to the diagonal brace is provided at the bottom of the beam.

5. A method for installing a connection structure for a steel structure building according to any one of claims 1 to 4, characterized in that: The specific steps include: Connect the bottom end of the assembly column to the column set below it, wherein the positioning seat on the mounting seat is inserted into the slot, the positioning boss is inserted into the positioning groove, and all the positioning tables are connected in sequence with bolts; Connect the beam connection assembly to the end of the beam, insert the beam connection assembly into the fixed cavity, connect the fixed hinge seat A to the positioning plate with the pin bolt, and adjust the position of the beam; Fix the positioning plate, wing plate and crossbeam with positioning bolts, and connect the assembly column and crossbeam with diagonal bracing; Connect the bottom end of the mounting column to the column above it.

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