Portal frame unit and steel structure house

Abstract

The utility model provides a door-type frame unit and a steel structure house, a combination column of the door-type frame unit is provided with a first stand column and a second stand column which are oppositely arranged on the same plane, and a roof beam is provided with a first upper beam and a second upper beam which are lapped together; an adapter component is arranged between each stand column and the corresponding upper beam, and the adapter components are used for assembling and connecting the stand columns and the adjacent upper beams at included angles; a connecting component is arranged between the first upper beam and the second upper beam, and the connecting component is suitable for stably butting the two upper beams into a roof structure; by arranging the switching component between the stand column and the upper beam, the stand column and the upper beam can be effectively assembled and connected in an included angle mode, the stability of connecting joints on the beam columns is improved, the stability and the deformation resistance of the whole frame are improved, and the switching component and the connecting component are used in cooperation on the frame, so that the cost is reduced. Therefore, the connection among the components is more accurate and stable, the construction error is greatly reduced, and the installation efficiency is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building materials, in particular to a door-type frame unit and a steel structure house. Background Art

[0002] As the demand for innovation in the construction market continues to increase, steel structure buildings have gradually become an important part of the residential structural system due to their mature technology, fast construction speed, and excellent seismic performance.

[0003] At present, through the application of prefabricated construction technology, the construction industry can improve efficiency while ensuring project quality, and promote the construction industry to develop in a more environmentally friendly and energy-saving direction. Steel structure buildings can not only shorten the construction period and reduce construction costs, but also have excellent earthquake resistance, providing safe and reliable protection for urban construction.

[0004] Therefore, as a new form of construction, prefabricated buildings have significantly improved construction efficiency, shortened construction period, and played an important role in construction quality control on the basis of ensuring orderly management of on-site construction.

[0005] However, in actual construction applications, prefabricated buildings still have some limitations. For example, when steel structural members are subjected to compression or bending, local areas are prone to instability, such as local buckling of steel columns or buckling of the web of steel beams, which affects the bearing capacity and safety of the entire structure. In addition, the entire structure or part of the structure is prone to overall instability, such as lateral instability of the frame or overall buckling of the frame column. This phenomenon is more frequent in taller buildings or structures that bear larger horizontal loads.

[0006] In particular, improper design and construction of existing steel structures lack necessary node connections, resulting in weak links in the structure, leading to damage at the joints and affecting the stability and safety of the overall structure. In actual application scenarios, steel structures are often subject to the combined effects of multiple forces, which exacerbate the instability of the structure under non-design conditions and have an adverse effect on the performance of the frame.

[0007] In general, prefabricated buildings do have significant advantages in improving construction efficiency, shortening construction period, and ensuring construction quality. However, there are still many deficiencies in the reinforcement design of local components, reasonable support systems, and optimized node design. It is difficult to improve the stability of steel structure houses and ensure safety and reliability during use. Utility Model Content

[0008] In view of this, the purpose of the utility model is to provide a portal frame unit and a steel structure house to solve the above problems.

[0009] The utility model adopts the following scheme:

[0010] The present application provides a portal frame unit, comprising an outer frame composed of a combination column and a roof beam; the combination column comprises a first column and a second column facing and opposite to each other in the same plane, and the roof beam comprises a first upper beam and a second upper beam overlapped together; a transition member is provided between the first column and the first upper beam, and between the second column and the second upper beam, the transition member is used to assemble and connect the column with the adjacent upper beam at an angle; a connecting member is provided between the first upper beam and the second upper beam, and the connecting member is suitable for firmly connecting the two upper beams to form a roof structure.

[0011] As a further improvement, the transition component is constructed as a steel structure that is easy to plug in, so that the ends of the column and the upper beam can be assembled into a whole after being adapted and inserted.

[0012] As a further improvement, the transition component comprises an upper arc-shaped flange plate, a lower bent flange plate, and an intermediate web plate, and the intermediate web plate is centrally welded and fixed between the upper arc-shaped flange plate and the lower bent flange plate.

[0013] As a further improvement, the middle web forms a first node plug-in connection area in the front and a second node plug-in connection area in the rear; any column is provided with two separate column parts facing back to back, and any upper beam is provided with two separate beam parts facing back to back, wherein one column part and one beam part are inserted into the first node plug-in connection area flush with each other, and another column part and another beam part are inserted into the second node plug-in connection area flush with each other.

[0014] As a further improvement, it also includes a supporting member; the supporting member includes a bottom plate and a vertical plate; the vertical plate is inserted and embedded in the gap between the two column members, and the end of the column member is abutted against the bottom plate; left and right side plates are provided on the vertical plate to cooperate with each other to form an I-shaped structure, and the side plates are affixed to the outer surfaces of the two column members.

[0015] As a further improvement, the upper arc-shaped flange plate and the lower bent flange plate mutually define a plug-in angle at both end sides of the transition component, and correspondingly limit the angle between the column and the upper beam to a range of an obtuse angle.

[0016] As a further improvement, an axil plate is welded and fixed below the lower bent flange plate, and both ends of the axil plate extend correspondingly to be connected and aligned with the end portions of the lower bent flange plate.

[0017] As a further improvement, the upper arc-shaped flange plate has an integrally extending mounting portion, which is used to connect an external track member or a beam or a purlin; and the middle web is mounted and fixed to the upper beam and the column at the connection point by fasteners.

[0018] As a further improvement, the connecting member is constructed as a steel structure that is easy to plug in, so that the ends of the two upper beams can be assembled into a whole after being adapted and inserted; wherein, the connecting member is consistent in shape with the transition member, and the connecting member is configured with a bending arc smaller than that of the transition member, so that the angle between the two upper beams is greater than the angle between the column and the upper beam.

[0019] The present application further provides a steel structure house, comprising a crossbeam and a portal frame unit as described above; a plurality of the portal frame units are arranged at intervals from each other, and a plurality of crossbeams are installed on each portal frame unit at equal intervals; the crossbeam is constructed as a C-shaped dovetail rail, and a rail member that slidably cooperates with the C-shaped dovetail rail is correspondingly provided on the portal frame unit.

[0020] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0021] 1. The portal frame unit of the present application can effectively assemble and connect the column and the upper beam at an angle by setting a transition member between the column and the upper beam, thereby increasing the stability of the connection node on the beam and column, and improving the stability and deformation resistance of the entire frame. The coordinated use of the transition member and the connecting member on the frame makes the connection between the components more accurate and stable, greatly reducing construction errors and significantly improving installation efficiency.

[0022] 2. The first upper beam and the second upper beam are firmly connected by connecting components to form a whole roof structure, which makes the frame unit more flexible and stable in spatial layout and can meet the needs of different building construction. The angle assembly can effectively disperse and resist external loads, so that the building has better seismic resistance when it is subjected to sudden external forces such as earthquakes, thereby ensuring the safety of the structure.

[0023] 3. By cleverly designing the connection of the frame unit components, the connection between the columns and beams is optimized and simplified, which not only improves the overall performance and construction efficiency of the building frame, but also reduces material waste and improves the utilization rate of the structure. The connection between the components is more reliable and easy to disassemble and maintain. It can be applied to various types of buildings, whether residential, office or industrial buildings, and can well meet their structural requirements. It has significant technical advantages and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a door-type frame unit of an embodiment of the utility model;

[0025] Figure 2 yes Figure 1 Schematic diagram of disassembly from other perspectives;

[0026] Figure 3 It is a structural schematic diagram of a transition component of a door-type frame unit of an embodiment of the utility model;

[0027] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective;

[0028] Figure 5 It is a structural schematic diagram of the connecting member of the door frame unit of the embodiment of the utility model;

[0029] Figure 6 It is a structural schematic diagram of a supporting member of a portal frame unit of an embodiment of the utility model;

[0030] Figure 7 It is a disassembled schematic diagram of a column and a column member of a portal frame unit of an embodiment of the utility model;

[0031] Figure 8 It is a disassembled schematic diagram of the upper beam and beam body of the portal frame unit of the embodiment of the utility model;

[0032] Fig. 9 It is a structural schematic diagram of a door-type frame unit of another embodiment of the utility model;

[0033] Fig.10 A structural schematic diagram of a steel structure house according to an embodiment of the utility model;

[0034] Fig.11 It is a partially enlarged schematic diagram of a steel structure house according to an embodiment of the utility model.

[0035] icon:

[0036] 1-first column; 2-second column; 3-first upper beam; 4-second upper beam; 5-transition member; 51-upper arc-shaped flange plate; 52-lower bent flange plate; 53-middle web plate; 54-axillary plate; 55-installation portion; 6-connecting member; 7-supporting member; 71-bottom plate; 72-vertical plate; 73-side plate; 8-cross beam; 9-track member; 10-middle column. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0038] Example

[0039] Combination Figures 1 to 8 The present embodiment provides a portal frame unit, including an outer frame composed of a combination column and a roof beam. The combination column has a first column 1 and a second column 2 facing each other in the same plane, and the roof beam has a first upper beam 3 and a second upper beam 4 overlapped together. A transition member 5 is provided between the first column 1 and the first upper beam 3, and between the second column 2 and the second upper beam 4, and the transition member 5 is used to assemble and connect the column and the adjacent upper beam at an angle. A connecting member 6 is provided between the first upper beam 3 and the second upper beam 4, and the connecting member 6 is suitable for firmly connecting the two upper beams to form a roof structure.

[0040] The portal frame unit mentioned above can effectively assemble and connect the column and the upper beam at an angle by setting a transition member 5 between the column and the upper beam, thereby increasing the stability of the connection node on the beam and column, and improving the stability and deformation resistance of the entire frame. The coordinated use of the transition member 5 and the connecting member 6 on the frame makes the connection between the components more accurate and stable, greatly reducing construction errors and significantly improving installation efficiency.

[0041] The first upper beam 3 and the second upper beam 4 are firmly connected by the connecting member 6 to form a whole roof structure, so that the frame unit is more flexible and stable in spatial layout, which can meet the needs of different building constructions, and the angle assembly cooperation mode can effectively disperse and resist the external load, so that the building has better seismic performance when it is subjected to sudden external forces such as earthquakes, thereby ensuring the safety of the structure.

[0042] By cleverly designing the component connections of the frame units, the connection between columns and beams is optimized and streamlined, which not only improves the overall performance and construction efficiency of the building frame, but also reduces material waste and improves the utilization rate of the structure. The connection between the components is more reliable and easy to disassemble and maintain. It can be applied to various types of buildings, whether residential, office or industrial buildings, and can well meet their structural requirements. It has significant technical advantages and application value.

[0043] like Figures 2 to 4 As shown, in this embodiment, the transition member 5 is constructed as a steel structure that is easy to plug in, so that the ends of the column and the upper beam are assembled into a whole after being adapted and inserted. Further, the column and the upper beam are assembled together by bolts or rivets. Among them, the plug-in steel structure enables the column and the upper beam to be quickly and conveniently assembled into a whole during construction. Compared with the traditional welding or bolt connection method, the plug-in method is simpler and reduces the construction time and labor intensity. In addition, the plug-in design of the transition member 5 ensures the close fit of the ends of the column and the upper beam, forming a stable connection, which can effectively transfer and disperse the load, and improve the bearing capacity and anti-deformation ability of the entire frame unit.

[0044] Specifically, the transition member 5 is connected between the column and the upper beam in an angular shape. The transition member 5 includes an upper arc-shaped flange plate 51, a lower bent flange plate 52, and an intermediate web plate 53, and the intermediate web plate 53 is welded and fixed between the upper arc-shaped flange plate 51 and the lower bent flange plate 52. In addition, the cross-section of the transition member 5 is H-shaped. On the one hand, the upper arc-shaped flange plate 51 provides a larger contact area and rigidity, which can effectively disperse and transfer the load from the upper beam. On the other hand, the lower bent flange plate 52 enhances the bending resistance through the bending design, ensuring the stability of the connection between the column and the upper beam. In addition, the intermediate web plate 53 provides additional support and fixing between the upper arc-shaped flange plate 51 and the lower bent flange plate 52, further enhancing the strength and stability of the entire transition member 5.

[0045] Therefore, the cooperation between the upper arc-shaped flange plate 51 and the lower bent flange plate 52 can better adapt to forces in different directions, so that the connection part exhibits good mechanical properties when subjected to various loads and reduces stress concentration. The central welding fixation of the middle web 53 provides a uniform force transmission path, improving the uniformity and stability of the force of the overall component.

[0046] In other embodiments, the upper arc-shaped flange plate 51, the lower bent flange plate 52, and the middle web plate 53 may also be an integral part, all falling within the protection scope of this case.

[0047] Furthermore, the middle web 53 forms a first node plug-in connection area in the front and a second node plug-in connection area in the rear. Any column is provided with two separate column parts corresponding to the back-to-back interval, and any upper beam is provided with two separate beam parts corresponding to the back-to-back interval, wherein one column part and one beam part are inserted into the first node plug-in connection area flush with each other, and another column part and another beam part are inserted into the second node plug-in connection area flush with each other. Preferably, each column is formed by combining and splicing two separate C-section column parts, and each upper beam is formed by combining and splicing two separate C-section beam parts. At the node, the column and the upper beam are connected and assembled in the transition member 5 by plugging.

[0048] In the above, the establishment of the front and rear node plug-in connection areas makes the connection between the column and the upper beam more stable, effectively disperses the load, and enhances the stability of the entire structure. The plug-in arrangement of the two separate column members and the two beam members on both sides of the middle web 53 further enhances the bending and shearing resistance of the connection point and provides higher structural reliability. By inserting the column members and the beam members into the front and rear node plug-in connection areas respectively, the precise alignment of the connection position can be ensured, further simplifying the installation process and improving construction efficiency. The node plug-in connection area enables the components to be automatically aligned and positioned during installation, reducing human operation errors and ensuring the accuracy and quality of the connection.

[0049] Preferably, the beam and column parts are in point contact with each other in the node plug-in connection area, and after the end corners of the two are abutted, feedback is given to the construction personnel to complete the assembly in place. In addition, in the respective node plug-in connection areas, the column parts and the beam parts they match are aligned in the same plane, ensuring the consistency of the columns and the upper beams, and enhancing the overall rigidity and stability of the structure, and improving the performance of the building frame under dynamic loads.

[0050] like Figure 2 and Figure 6 As shown, in this embodiment, the portal frame unit further includes a supporting member 7. The supporting member 7 includes a bottom plate 71 and a vertical plate 72. The vertical plate 72 is inserted and embedded in the gap between the two column members, and the end of the column member abuts against the bottom plate 71. The bottom plate 71 and the vertical plate 72 provide additional support and stability for the column. The vertical plate 72 is inserted and embedded in the gap between the two column members to ensure that the column member will not tilt or move when subjected to force, and the bottom plate 71 provides a reliable bottom support for the column member, further enhancing the stability and bearing capacity of the overall structure.

[0051] Furthermore, left and right side panels 73 are provided on the vertical panel 72 to cooperate with each other to form an I-shaped structure, and the side panels 73 are attached to the outer sides of the two column members. Among them, the I-shaped structure has high bending and shear resistance, so that the support member 7 can evenly distribute the load of the column and the beam body, reduce stress concentration, and improve the overall bearing capacity and durability of the structure. In addition, the left and right side panels 73 are attached to the outer sides of the two column members, which enhances the lateral rigidity and stability of the structure and ensures the stability and reliability of the column when bearing various loads. It is also easier to align and position during the installation process, which simplifies the construction operation and improves the construction efficiency.

[0052] In this embodiment, the upper arc-shaped flange plate 51 and the lower bent flange plate 52 define the plug-in angles of the two ends of the transition member 5, and the angle between the column and the upper beam is limited to an obtuse angle range. The obtuse angle range is between 100° and 105°, and the preferred angle is 101°, at which time the angles of the two are optimal. Therefore, by limiting the angle between the column and the upper beam to an obtuse angle range, the load can be better dispersed and transferred, stress concentration can be reduced, and the mechanical properties of the overall structure can be enhanced.

[0053] Obtuse angle connection is conducive to the uniform distribution of components under stress, improving the stability and safety of the structure. Under horizontal loads such as earthquakes, the obtuse angle design has better deformation capacity and seismic resistance, which can more effectively absorb and dissipate earthquake energy, reduce structural damage, and ensure the seismic safety of the building.

[0054] Obtuse angle connection increases the contact area of ​​the connection, enhances the connection strength between the column and the upper beam, provides higher shear and bending resistance, makes the structure more evenly stressed, reduces the risk of damage caused by local stress concentration, and extends the service life of the structure. At the same time, the larger connection angle also makes maintenance and repair more convenient and reduces maintenance costs.

[0055] The obtuse angle connection design reduces the conflicts and instability between components during the installation process, and improves the safety of construction. It not only optimizes the structural performance, but also makes the building appearance more beautiful and coordinated, providing a better visual effect.

[0056] It should be noted that the bending curvature of the upper arc-shaped flange plate 51 and the lower bent flange plate 52 corresponds to the defined insertion angle, so that the column and the upper beam can be automatically aligned during installation, ensuring the accuracy and stability of the connection.

[0057] In this embodiment, an axil plate 54 is welded and fixed below the lower bent flange plate 52, and the two ends of the axil plate 54 extend to be connected and aligned with the ends of the lower bent flange plate 52. The axil plate 54 is welded and fixed below the lower bent flange plate 52, providing additional support and reinforcement, significantly improving the rigidity and strength of the lower bent flange plate 52, and enhancing the bearing capacity and stability of the entire transition component 5. The axil plate 54 is connected and aligned with the two ends of the lower bent flange plate 52 to form a continuous reinforcement effect, which enhances the bending resistance of the lower bent flange plate 52, can more effectively resist the bending moment from the upper beam and the column, and improve the bending resistance of the structure. Therefore, the load can be dispersed and evenly distributed through the axil plate 54, the stress concentration phenomenon can be reduced, the stress distribution of the overall structure can be optimized, and the stability and durability of the component under stress can be improved.

[0058] In this embodiment, the upper arc-shaped flange plate 51 corresponds to an integrally extending mounting portion 55, and the mounting portion 55 is used to connect to the track member 9 or the cross beam 8 or the purlin. The integrally extending mounting portion 55 enables the upper arc-shaped flange plate 51 to be directly connected to the track member 9 or the cross beam 8, providing more connection options, increasing the flexibility and adaptability of the structural design, and being applicable to various building requirements.

[0059] It should be mentioned that the intermediate web 53 is fixed to the upper beam and the column at the connection point by fasteners. Also, the vertical plate 72 of the support member 7 is fixed to the two column members at the connection point by fasteners. Preferably, the fasteners are bolts to enhance the reliability of the connection and improve the convenience of maintenance and overhaul.

[0060] like Figure 2 and Figure 5 As shown, correspondingly, consistent with the above-mentioned transition member 5, the connecting member 6 is constructed as a steel structure member that is convenient for plugging, so that the ends of the two upper beams are assembled into a whole after being adapted and inserted. The connecting member 6 is consistent with the shape of the transition member 5. For the specific structural configuration of the connecting member 6, reference can be made to the above-mentioned transition member 5, and no further description is given here.

[0061] Among them, there is an obvious difference that the connecting member 6 is configured to have a smaller bending arc than the transition member 5, so that the angle between the two upper beams is greater than the angle between the column and the upper beam. Preferably, the angle between the two upper beams ranges from 155° to 160°, and the angle between the two is optimal when it is limited to 158°.

[0062] Due to the large angle between the two upper beams, the overall rigidity of the structure is increased, making the frame unit more resistant to deformation when subjected to vertical and horizontal loads, and improving the bearing capacity and stability of the structure. In addition, the mutual support effect between the upper beams is increased, improving the seismic performance of the structure. Under the action of an earthquake, its structure can better disperse and absorb vibration energy, reduce the risk of structural damage, and ensure the safety of the building.

[0063] like Fig. 9 As shown, in a preferred embodiment, it also includes an intermediate column 10 that is butt-connected to the connecting member 6. The intermediate column 10 is formed by combining and splicing two separate C-section column members, and the two column members are arranged front and back oppositely at the lower armpit plate of the connecting member 6 to form a gap for plug-in fitting, which is conducive to plugging the connecting structure and the supporting structure at the node.

[0064] Combination Figure 10 to Figure 11 This embodiment further provides a steel structure house, including a crossbeam 8 and a portal frame unit as described above. A plurality of the portal frame units are arranged at intervals, and a plurality of crossbeams 8 are installed at equal intervals across each portal frame unit. The cooperation between the plurality of portal frame units and the crossbeams 8 makes the overall structure more stable, can effectively disperse and bear the load, and improves the safety and stability of the building. Moreover, the portal frame units are arranged at intervals, and the crossbeams 8 are installed at equal intervals across each other, which has high design flexibility, can adapt to different building forms and usage requirements, and meet diverse building design requirements.

[0065] The crossbeam 8 is constructed as a C-shaped dovetail rail, and a track member 9 that slides with the C-shaped dovetail rail is provided on the portal frame unit. The C-shaped dovetail rail is used as the crossbeam 8, which has a light structure and a high load-bearing capacity, can effectively save space, and improve the utilization rate of the internal space of the building. The portal frame unit is provided with a track member 9 that slides with the C-shaped dovetail rail, so that the crossbeam 8 can be flexibly moved on the track, which facilitates the adjustment and maintenance of the structure and improves the operability and maintainability of the building.

[0066] The above are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

Claims

1. A portal frame unit, comprising an outer frame composed of a composite column and a roof beam; the composite column comprises a first column and a second column facing each other and arranged in the same plane, and the roof beam comprises a first upper beam and a second upper beam overlapped together; characterized in that: A transition member is provided between the first column and the first upper beam, and between the second column and the second upper beam, and the transition member is used to assemble and connect the column and the adjacent upper beam at an angle; as well as, A connecting member is provided between the first upper beam and the second upper beam, and the connecting member is suitable for firmly connecting the two upper beams to form a roof structure.

2. The portal frame unit according to claim 1, characterized in that: The transition component is constructed as a steel structure that is convenient for plug-in connection, so that the ends of the column and the upper beam are assembled into a whole after being adapted and inserted.

3. The portal frame unit according to claim 2, characterized in that: The transition component comprises an upper arc-shaped flange plate, a lower bent flange plate, and an intermediate web plate, wherein the intermediate web plate is centrally welded and fixed between the upper arc-shaped flange plate and the lower bent flange plate.

4. The portal frame unit according to claim 3, characterized in that: The middle web forms a first node plug-in connection area in the front and a second node plug-in connection area in the rear; any column is provided with two separate column parts facing away from the interval, and any upper beam is provided with two separate beam parts facing away from the interval, one of the column parts and one of the beam parts are inserted into the first node plug-in connection area flush with each other, and the other column part and the other beam part are inserted into the second node plug-in connection area flush with each other.

5. The portal frame unit according to claim 4, characterized in that: It also includes a supporting member; the supporting member includes a bottom plate and a vertical plate; the vertical plate is inserted and embedded in the gap between the two column members, and the end of the column member is abutted against the bottom plate; left and right side plates are provided on the vertical plate to cooperate with each other to form an I-shaped structure, and the side plates are affixed to the outer surfaces of the two column members.

6. The portal frame unit according to claim 3, characterized in that: The upper arc-shaped flange plate and the lower bent flange plate mutually define a plug-in angle at both end sides of the transition component, and correspondingly limit the included angle between the column and the upper beam to a range of an obtuse angle.

7. The portal frame unit according to claim 3, characterized in that: An axil plate is welded and fixed below the lower bent flange plate, and two ends of the axil plate extend correspondingly to be connected and aligned with the end portions of the lower bent flange plate.

8. The portal frame unit according to claim 4, characterized in that: The upper arc-shaped flange plate has an integrally extending mounting portion, which is used to be externally connected to a track member, a beam or a purlin; and the middle web is mounted and fixed to the upper beam and the column at the connection point by fasteners.

9. The portal frame unit according to claim 2, characterized in that: The connecting member is constructed as a steel structure that is easy to plug in, so that the ends of the two upper beams can be assembled into a whole after being adapted and inserted; wherein, the connecting member is consistent in shape with the transition member, and the connecting member is configured with a bending arc smaller than that of the transition member, so that the angle between the two upper beams is greater than the angle between the column and the upper beam.

10. A steel structure house, characterized in that: It comprises a crossbeam and a portal frame unit as described in any one of claims 1 to 9; a plurality of the portal frame units are arranged at intervals from each other, and a plurality of crossbeams are installed on each portal frame unit at equal intervals; the crossbeam is constructed as a C-shaped dovetail rail, and a track member that slidably cooperates with the C-shaped dovetail rail is correspondingly provided on the portal frame unit.

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