Steel reinforced concrete beam column connecting structure and steel reinforced concrete beam column

Abstract

The utility model discloses a steel reinforced concrete beam column connecting structure and a steel reinforced concrete beam column. The steel reinforced concrete beam column connecting structure comprises an upper column, a lower column and a beam, the upper column is inserted into the lower column, and the upper column flanges on the two sides of the upper column are located in the lower column flanges on the two sides of the lower column. A beam is arranged in the area where the upper column is inserted into the lower column, the height of the beam is not smaller than that of the upper column inserted into the lower column, an upper rib of the beam is connected with the lower column through a rib lapping plate and a sleeve, and a lower rib of the beam is connected with the lower column through a rib lapping plate. According to the technical scheme, it can be guaranteed that the upper-layer steel reinforced concrete beam column and the lower-layer steel reinforced concrete beam column are connected reliably, structural rigidity changes are uniform, meanwhile, vertical steel column connection joint construction, upper column vertical steel bar anchoring and reasonable load transmission are facilitated, and the reliability and safety of the steel reinforced concrete beam column connection joint and even the whole structure are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of construction, and more specifically, to a steel reinforced concrete beam-column connection structure and a steel reinforced concrete beam-column. Background Art

[0002] A steel reinforced concrete beam-column is composed of reinforced concrete and steel sections, combining the good compressive performance of concrete and the high strength and high stiffness of steel. It has high load-bearing capacity and stiffness and is widely used in high-rise buildings, industrial plants and warehouses, as well as bridges and underground structures.

[0003] Currently, the design of steel reinforced concrete beam-column connection joints mainly relies on "Code for Design of Composite Structures" (JGJ138 - 2016), "Arrangement Rules and Detail Drawings of Steel Bars for Construction of Steel Reinforced Concrete Structures" (12SG904 - 1), "Construction of Steel Reinforced Concrete Composite Structures" (04SG523), etc. The codes and atlases mainly target the situation where the height of the steel section in the upper and lower steel reinforced concrete columns is not much different. However, when the difference in the height of the steel section in the upper and lower steel reinforced concrete columns is relatively large, for example, the slope ratio of the steel flange is greater than 1:6, the codes and atlases are no longer applicable, and there is interference between the vertical longitudinal bars of the upper column and the steel section of the lower column during the anchoring of the upper column, resulting in greater construction difficulty and even being unable to be implemented when the diameter of the upper steel bars is relatively large.

[0004] Therefore, how to ensure reliable and safe connection of the upper and lower steel reinforced concrete beam-columns and facilitate subsequent construction when the difference in the height of the steel section in the upper and lower steel reinforced concrete columns is relatively large has become a problem to be solved in this field. Summary of the Utility Model

[0005] In view of this, the present application proposes a solution for a steel reinforced concrete beam-column connection structure and a steel reinforced concrete beam-column.

[0006] In the first aspect, the present application proposes a steel reinforced concrete beam-column connection structure. An upper column, a lower column, and a beam;

[0007] The upper column is inserted into the lower column, and the upper column flanges on both sides of the upper column are located within the lower column flanges on both sides of the lower column;

[0008] The beam is arranged in the area where the upper column is inserted into the lower column, and the height of the beam is not less than the height of the upper column inserted into the lower column, so that the upper reinforcement of the beam is connected to the lower column through a lap joint plate and a sleeve, and the lower reinforcement of the beam is connected to the lower column through a lap joint plate.

[0009] Preferably, the upper column further includes: upper column longitudinal reinforcement and upper column stirrups;

[0010] The upper column longitudinal reinforcement is embedded on both sides of the upper column and is inserted and fixed into the beam;

[0011] And, stirrups of the upper column are arranged around the longitudinal reinforcement bars of the upper column.

[0012] Preferably, the lower column further includes: longitudinal reinforcement bars of the lower column and stirrups of the lower column;

[0013] The longitudinal reinforcement bars of the lower column are embedded on both sides of the lower column and fixed in the beam;

[0014] And, stirrups of the lower column are arranged around the longitudinal reinforcement bars of the lower column.

[0015] Preferably:

[0016] The upper column further includes: a web of the upper column;

[0017] The lower column further includes: a web of the lower column;

[0018] The beam further includes: a web of the beam;

[0019] The web of the upper column is embedded in the upper column, the web of the lower column is embedded in the lower column, and the web of the beam is embedded in the beam;

[0020] The center lines of the web of the upper column, the web of the beam, and the web of the lower column are aligned, so that the web of the lower column extends upward to the top of the beam.

[0021] Preferably, the upper reinforcement bars of the beam include: the first tension longitudinal reinforcement bar of the profiled steel beam and the lapping plate for the longitudinal reinforcement bars at the top of the profiled steel beam;

[0022] The first tension longitudinal reinforcement bar of the profiled steel beam is transversely arranged at the top of the beam, and the lapping plate for the longitudinal reinforcement bars at the top of the profiled steel beam is arranged below one side of the first tension longitudinal reinforcement bar;

[0023] The first tension longitudinal reinforcement bar of the profiled steel beam is connected to the lapping plate of the lower column flange through the lapping plate for the longitudinal reinforcement bars at the top of the profiled steel beam.

[0024] More preferably, the upper reinforcement bars of the beam further include: the second tension longitudinal reinforcement bar of the profiled steel beam and the connecting sleeve of the profiled steel beam;

[0025] The second tension longitudinal reinforcement bar of the profiled steel beam is arranged below the first tension longitudinal reinforcement bar of the profiled steel beam, and the connecting sleeve of the profiled steel beam is arranged at one end of the second tension longitudinal reinforcement bar of the profiled steel beam;

[0026] The second tension longitudinal reinforcement bar of the profiled steel beam is connected to the sleeve of the lower column flange through the connecting sleeve of the profiled steel beam.

[0027] More preferably, the lower reinforcement bars of the beam include: the bottom tension longitudinal reinforcement bar of the profiled steel beam, the lapping plate for the longitudinal reinforcement bars at the bottom of the profiled steel beam, and the lapping plate for the longitudinal reinforcement bars of the profiled steel column;

[0028] The tension longitudinal bars at the bottom of the profiled steel beam are horizontally arranged at the bottom of the beam, and the stirrup plate for the longitudinal bars at the bottom of the profiled steel beam is arranged below one side of the tension longitudinal bars at the bottom of the profiled steel beam;

[0029] The tension longitudinal bars at the bottom of the profiled steel beam are connected to the stirrup plate for the longitudinal bars of the lower column through the stirrup plate for the longitudinal bars at the bottom of the profiled steel beam;

[0030] Moreover, one end of the tension longitudinal bars at the bottom of the profiled steel beam is longitudinally connected with the stirrup plate for the longitudinal bars of the profiled steel column, and the stirrup plate for the longitudinal bars of the profiled steel column is connected to the stirrup plate for the longitudinal bars of the lower column through the stirrup plate for the longitudinal bars at the bottom of the profiled steel beam.

[0031] Further preferably, the beam further includes: stirrups for the profiled steel beam;

[0032] The stirrups for the profiled steel beam are arranged around the first tension longitudinal bar of the profiled steel beam.

[0033] Preferably, the connection structure further includes: vertical stiffeners for the profiled steel beam;

[0034] The vertical stiffeners for the profiled steel beam are embedded in the beam on the side close to the flange of the lower column.

[0035] Preferably, the connection structure further includes: horizontal stiffeners;

[0036] The horizontal stiffeners are transversely welded to the flange of the lower column and the flange of the upper column.

[0037] Preferably, the connection structure further includes: stud bolts;

[0038] The stud bolts are arranged in the flange of the lower column, the flange of the upper column and the beam flange of the beam.

[0039] In a second aspect, the present application also proposes a profiled steel concrete beam-column, including at least one profiled steel concrete beam-column connection structure in the first aspect.

[0040] The profiled steel concrete beam-column connection structure provided by the present application ensures reliable connection between the upper and lower profiled steel concrete beam-columns, uniform change in structural stiffness, convenient construction of the vertical connection node of the profiled steel column and anchoring of the vertical steel bars of the upper column, reasonable transfer of load effects, and reliability and safety of the profiled steel concrete beam-column connection node and even the entire structure by inserting the upper column into the lower column, arranging a beam in the area where the upper column is inserted into the lower column, connecting the upper steel bars of the beam to the lower column through a stirrup plate and a sleeve, and connecting the lower steel bars of the beam to the lower column through a stirrup plate.

[0041] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0042] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof are used to explain this application. In the drawings:

[0043] Figure 1 It is a schematic diagram of a steel reinforced concrete beam-column connection structure according to a preferred embodiment of this application.

[0044] Reference numerals in the drawings:

[0045] 1 - Upper column; 11 - Upper column flange; 12 - Longitudinal reinforcement of upper column; 13 - Stirrup of upper column; 14 - Web of upper column;

[0046] 2 - Lower column; 21 - Lower column flange; 22 - Longitudinal reinforcement of lower column; 23 - Stirrup of lower column; 24 - Web of lower column;

[0047] 3 - Beam; 31 - Web of beam; 32 - First tension longitudinal reinforcement of steel beam; 33 - Lapping plate for top longitudinal reinforcement of steel beam; 34 - Second tension longitudinal reinforcement of steel beam; 35 - Connecting sleeve of steel beam; 36 - Bottom tension longitudinal reinforcement of steel beam; 37 - Lapping plate for bottom longitudinal reinforcement of steel beam; 38 - Stirrup of steel beam; 39 - Beam flange; 310 - Vertical stiffener of steel beam; 311 - Lapping plate for longitudinal reinforcement of steel column;

[0048] 4 - Horizontal stiffener; 5 - Stud; 6 - Reserved grouting hole. Detailed implementation manners

[0049] The technical solutions of this application will be described in detail below with reference to the accompanying drawings and in combination with the implementation manners.

[0050] In a first aspect, this application provides a steel reinforced concrete beam-column connection structure, as Figure 1 shown. The connection structure includes: an upper column 1, a lower column 2, and a beam 3.

[0051] Among them, the upper column 1 is inserted into the lower column 2, and the upper column flanges 11 on both sides of the upper column 1 are located within the lower column flanges 21 on both sides of the lower column 2; a beam 3 is arranged in the area where the upper column 1 is inserted into the lower column 2, and the height of the beam 3 is not less than the height of the upper column 1 inserted into the lower column 2, so that the upper reinforcement of the beam 3 is connected to the lower column 2 through lapping plates and sleeves, and the lower reinforcement of the beam 3 is connected to the lower column 2 through lapping plates.

[0052] Furthermore, the upper column 1 includes: an upper column flange 11; the lower column 2 includes: a lower column flange 21; the beam 3 includes: a beam flange 39. Among them, the upper column flange 11, the lower column flange 21, and the beam flange 31 are all steel beam flanges.

[0053] The flange refers to the peripheral or two-side edge part of a beam-column with a cross-sectional form of cross or I-shaped. Among them, the upper flange plate is called the upper flange, the lower flange plate is called the lower flange, and the plate connecting the two flanges is called the web. If the widths of the upper and lower flanges are unequal, it is called an unequal-flange I-beam. The I-beam can be a steel beam, a reinforced concrete beam or a prestressed reinforced concrete beam, and the latter two are often unequal-flange I-beams with the upper flange larger than the lower flange.

[0054] In a specific embodiment, the flange slope ratio of the upper column flange 11 and the lower column flange 21 is greater than 1:6. At this time, it is impossible to butt the flanges after bending according to the specifications and atlases. Therefore, the upper column 1 or the lower column 2 is not bent, the upper column 1 is inserted into the lower column 2, and the force is transmitted through the beam 3 to stabilize the structure.

[0055] Furthermore, the upper column 1 includes: upper column longitudinal reinforcement 12 and upper column stirrups 13; the upper column longitudinal reinforcement 12 is buried on both sides of the upper column 1 and is inserted and fixed into the beam 3; and, the upper column stirrups 13 are arranged around the upper column longitudinal reinforcement 12.

[0056] Stirrups can fix the positions of the longitudinal reinforcements, form a steel bar framework with various steel bars in the component (beam or column), and ensure the stability of the structure.

[0057] Furthermore, the lower column 2 further includes: lower column longitudinal reinforcement 22 and lower column stirrups 23; the lower column longitudinal reinforcement 22 is buried on both sides of the lower column 2 and is fixed in the beam 3; and, the lower column stirrups 23 are arranged around the lower column longitudinal reinforcement 22.

[0058] Furthermore, the upper column 1 further includes: upper column web 14; the lower column 2 further includes: lower column web 24; the beam 3 further includes: beam web 31; the upper column web 14 is buried in the upper column 1, the lower column web 24 is buried in the lower column 2, and the beam web 31 is buried in the beam 3; the centerlines of the upper column web 14, the beam web 24, and the lower column web 31 are aligned, so that the lower column web 14 extends upward to the top of the beam 3.

[0059] Furthermore, the upper reinforcement of the beam 3 is connected to the lower column 2 through a lapping plate and a sleeve. The upper reinforcement of the beam 3 includes: the first tension longitudinal reinforcement 32 of the steel section beam and the longitudinal reinforcement lapping plate 33 at the top of the steel section beam; the first tension longitudinal reinforcement 32 of the steel section beam is horizontally arranged at the top of the beam 3, and the longitudinal reinforcement lapping plate 33 at the top of the steel section beam is arranged below one side of the first tension longitudinal reinforcement 32; one end of the first tension longitudinal reinforcement 32 of the steel section beam is connected to the lapping plate of the lower column flange 21 through the longitudinal reinforcement lapping plate 33 at the top of the steel section beam. At this time, the other end of the first tension longitudinal reinforcement 32 of the steel section beam can be fixed to other structures by means of sleeve connection.

[0060] Moreover, the upper reinforcement of the beam 3 further includes: the second tension longitudinal reinforcement 34 of the profiled steel beam and the connecting sleeve 35 of the profiled steel beam; the second tension longitudinal reinforcement 34 of the profiled steel beam is arranged below the first tension longitudinal reinforcement 32 of the profiled steel beam, and the connecting sleeve 35 of the profiled steel beam is arranged at one end of the second tension longitudinal reinforcement 34 of the profiled steel beam; one end of the second tension longitudinal reinforcement 34 of the profiled steel beam is sleeve-connected to the lower column flange 21 through the connecting sleeve 35 of the profiled steel beam. At this time, the other end of the second tension longitudinal reinforcement 34 of the profiled steel beam can be fixed to other structures by means of a lap joint plate connection.

[0061] It can be understood that, relative to the first tension longitudinal reinforcement 32 of the profiled steel beam, the second tension longitudinal reinforcement 34 of the profiled steel beam is arranged in the row below the upper tension longitudinal reinforcement of the profiled steel beam. Other structures can be understood as other structures outside the present application.

[0062] In the connection of the longitudinal reinforcement of the beam and column in the joint area, if all are connected by traditional sleeves, it is less likely to tighten both ends simultaneously, and construction cannot be realized. Therefore, in the present application, one end of the first tension longitudinal reinforcement 32 of the profiled steel beam is welded by means of a lap joint plate 33 of the top longitudinal reinforcement of the profiled steel beam, and the other end is fixed to other structures by means of a sleeve connection. Moreover, one end of the second tension longitudinal reinforcement 34 of the profiled steel beam is connected to the connecting sleeve 35 of the profiled steel beam by a mechanical connection sleeve, and the other end is fixed to other structures by means of a lap joint plate. On the one hand, it can ensure the safety and reliability of the connection between the steel bars and the joint, and on the other hand, it can speed up the construction progress and ensure the construction quality.

[0063] Furthermore, for the lower reinforcement of the beam 3 and the lower column 2 are connected by a lap joint plate, the lower reinforcement of the beam 3 includes: the bottom tension longitudinal reinforcement 36 of the profiled steel beam, the bottom longitudinal reinforcement lap joint plate 37 of the profiled steel beam and the longitudinal reinforcement lap joint plate 311 of the profiled steel column; the bottom tension longitudinal reinforcement 36 of the profiled steel beam is horizontally arranged at the bottom of the beam 3, and the bottom longitudinal reinforcement lap joint plate 37 of the profiled steel beam is arranged below one side of the bottom tension longitudinal reinforcement 36 of the profiled steel beam; the bottom tension longitudinal reinforcement 36 of the profiled steel beam is lap jointed to the longitudinal reinforcement 22 of the lower column through the bottom longitudinal reinforcement lap joint plate 37 of the profiled steel beam. Moreover, one end of the bottom tension longitudinal reinforcement 36 of the profiled steel beam is longitudinally connected with the longitudinal reinforcement lap joint plate 311 of the profiled steel column, and the longitudinal reinforcement lap joint plate 311 of the profiled steel column is lap jointed to the longitudinal reinforcement 22 of the lower column through the bottom longitudinal reinforcement lap joint plate 37 of the profiled steel beam.

[0064] Furthermore, the beam 3 further includes: the stirrup 38 of the profiled steel beam; the stirrup 38 of the profiled steel beam is arranged around the first tension longitudinal reinforcement 32 of the profiled steel beam.

[0065] Furthermore, the profiled steel concrete beam-column connection structure provided by the present application further includes: the vertical stiffening rib 310 of the profiled steel beam; the vertical stiffening rib 310 of the profiled steel beam is buried in the beam 3 on the side close to the lower column flange, and both ends are connected to the beam flange 39 to meet the force transfer requirement of the column longitudinal reinforcement.

[0066] Furthermore, the steel reinforced concrete beam-column connection structure provided by the present application further includes: a horizontal stiffener 4; the horizontal stiffener 4 is transversely welded to the lower column flange 11 and the upper column flange 21 to transfer the load effect.

[0067] The horizontal stiffener 4 and the vertical stiffener 39 of the steel beam are respectively used to ensure the continuity of the load transfer of the steel beam flange or the longitudinal reinforcing bars of the beam and the longitudinal reinforcing bars of the lower column.

[0068] Furthermore, the steel reinforced concrete beam-column connection structure provided by the present application further includes: stud bolts 5; the stud bolts 5 are arranged in the lower column flange 11, the upper column flange 21 and the beam steel flange 39, which ensures the bonding effect between the steel skeleton of the joint and the concrete, so that the concrete and the steel skeleton can be effectively bonded and work together under force.

[0069] Furthermore, the steel reinforced concrete beam-column connection structure in the present application further includes: reserved grouting holes 6; the reserved grouting holes 6 are arranged in the joint area where the upper and lower ends of the beam 3 are connected to the upper column 1 and the lower column 2, and the reserved grouting holes 6 are arranged in the horizontal stiffener 4, which is convenient for pouring and vibrating the concrete during construction and ensures the construction quality.

[0070] It can be understood that the upper column flange 11, the upper column longitudinal reinforcing bars 12, the upper column stirrups 13, and the upper column web 14 are all embedded in the upper column 1; the lower column flange 21, the lower column longitudinal reinforcing bars 22, the lower column stirrups 23, and the lower column web 24 are all embedded in the lower column 2; the beam web 31, the first tension longitudinal reinforcing bars 32 of the steel beam, the top longitudinal reinforcing bar lapping plate 33 of the steel beam, the second tension longitudinal reinforcing bars 34 of the steel beam, the steel beam connection sleeve 35, the bottom tension longitudinal reinforcing bars 36 of the steel beam, the bottom longitudinal reinforcing bar lapping plate 37 of the steel beam, the steel beam stirrups 38, the beam flange 39, the vertical stiffener 310 of the steel beam, and the longitudinal reinforcing bar lapping plate 311 of the steel column are all embedded in the beam 3.

[0071] Moreover, beams 3 are transversely arranged on both sides of the upper column 1 and the lower column 2, and the setting methods and connection structures on both sides are the same.

[0072] In the present application, considering that there is no such connection structure in the structural design code, if the transition method of the bell mouth of the upper and lower variable cross-section columns is referred to, the slope ratio of the upper and lower column flanges is greater than 1:6, which does not meet the code requirements, and since the cross-section of the upper column is too small compared with that of the lower column, the upper column longitudinal reinforcing bars 12 cannot be anchored in the joint area. To solve the reasonable anchoring of the upper column longitudinal reinforcing bars 12 and realize the downward transfer of the upper load, it is considered to insert the upper column 1 downward. At this time, the upper column longitudinal reinforcing bars 12 can be directly anchored into the joint area, and the anchoring length meets not less than 1.2Lae to realize the anchoring connection problem of the upper column longitudinal reinforcing bars 12. Otherwise, the anchoring length of the upper column longitudinal reinforcing bars 12 is insufficient, resulting in the inability to fully exert the strength of the reinforcing bars, and ultimately causing a significant decrease in the joint bearing capacity and affecting the safety of the entire structure.

[0073] In the connection area of this application, the upper steel column 3 of the profiled steel is inserted downward into the connection area by no less than 2 times the height of the profiled steel section, and the downward anchorage length of the longitudinal reinforcement 12 of the upper column is no less than 1.2Lae. This ensures the reliable anchorage of the profiled steel and longitudinal reinforcement of the upper column of the composite structure of profiled steel concrete, enabling its internal forces to be effectively transferred to the surrounding beams 3 and lower columns 2 and being deformed in coordination with them, thus solving the problems of the connection of complex joints and load transfer of profiled steel concrete.

[0074] In a specific embodiment, the connection methods involved in the upper column flange 11, upper column web 14, lower column flange 21, lower column web 24, beam web 31, top longitudinal reinforcement lapping plate 33 of the profiled steel beam, profiled steel beam connection sleeve 35, bottom longitudinal reinforcement lapping plate 37 of the profiled steel beam, beam flange 39, vertical stiffener 310 of the profiled steel beam, longitudinal reinforcement lapping plate 311 of the profiled steel column, horizontal stiffener 4, and stud 5 in this application are all welding.

[0075] Regarding the welding requirements between the components in this application, all the welded connections between the profiled steel components in this application adopt full penetration groove butt welding, and the weld quality grade is grade I. At the same time, single-sided or double-sided fillet welds are used for connection. When using single-sided fillet welds, the welding length meets the requirement of not less than 10 times the diameter of the reinforcement, and when using double-sided fillet welds, the welding length meets the requirement of not less than 5 times the diameter of the reinforcement.

[0076] Regarding the size and thickness requirements of the components in this application, the size specifications of the upper column 1, lower column 2, beam 3, and the internal profiled steel are obtained through the overall structural calculation analysis in combination with the conceptual design and construction requirements.

[0077] The longitudinal reinforcement 12 of the upper column, stirrups 13 of the upper column, longitudinal reinforcement 22 of the lower column, stirrups 23 of the lower column, first tensioned longitudinal reinforcement 32 of the profiled steel beam, second tensioned longitudinal reinforcement 34 of the profiled steel beam, bottom tensioned longitudinal reinforcement 36 of the profiled steel beam, and stirrups 38 of the profiled steel beam are all obtained through the analysis of the overall structural calculation model, and at the same time meet the construction requirements of relevant structural design codes.

[0078] The thickness of the longitudinal reinforcement lapping plate 311 of the profiled steel column, top longitudinal reinforcement lapping plate 33 of the profiled steel beam, and bottom longitudinal reinforcement lapping plate 37 of the profiled steel beam should meet formula (1):

[0079]

[0080] Where h s is the thickness of the lapping plate, f yk is the standard value of the tensile strength of the reinforcement, A s is the calculated area of the reinforcement, f s is the design value of the tensile strength of the steel, B s is the width of the lapping plate. B s The thickness of the protective layer should meet the relevant requirements for the value of the thickness of the protective layer in the "Code for Design of Concrete Structures" (GB50010 - 2010).

[0081] The thickness of the horizontal stiffener 4 shall not be less than the thickness of the beam flange 39, the bottom longitudinal bar lapping plate 37 of the profiled steel beam, and the top longitudinal bar lapping plate 33 of the profiled steel beam at the same position. When there are profiled steel beam flanges or steel bar lapping plates on both sides of the same horizontal stiffener, the thickness of the horizontal stiffener shall not be less than the larger value of the two thicknesses. At the same time, the thickness value of the horizontal stiffener 4 shall consider the influence of the strength reduction caused by the opening of the stiffener when the longitudinal bars 12 of the upper column 1 are inserted downward.

[0082] The thickness of the vertical stiffener 310 of the profiled steel beam is equal to the thickness of the longitudinal bar lapping plate 311 of the profiled steel column.

[0083] The downward insertion depth of the web 14 of the upper column and the flange 11 of the upper column shall be not less than 2.0 times the section height of the upper column profiled steel measured from the upper surface of the beam 3. The section height of the profiled steel in the beam 3 shall be taken as ≤h b ―400mm, and the thickness of the beam web 31 shall be ≥1 / 80 of the effective height h w of the profiled steel section. The diameter of the grouting hole 6 reserved in the transverse stiffener is 200mm, and it shall be appropriately reduced when the component size is small.

[0084] Regarding the specific construction method of this application: The profiled steel, its lapping plates, and the weldable mechanical connection sleeves are all processed and welded in the factory. The splicing joint position of the upper column profiled steel is 1.3m above the top surface of the beam, and the splicing positions of the profiled steel beams on both sides are approximately at 1.5 times the section height of the beam profiled steel. After such treatment, the size of the entire joint can be effectively reduced, which is convenient for transportation. After being transported to the site, it is welded to the lower column profiled steel and the profiled steel beams on both sides respectively. After the welding of the profiled steel skeleton is completed, the corresponding lapping plates are welded to each component or connected to the weldable mechanical connection sleeves. The stirrups are constructed according to the stirrups of the conventional reinforced concrete structure. Concrete pouring can only be carried out after the components are installed and the steel bars are welded and tied.

[0085] The profiled steel concrete beam-column connection structure provided by this application inserts the upper column into the lower column, and a beam is arranged in the area where the upper column is inserted into the lower column. The upper reinforcement of the beam is connected to the lower column through the lapping plate and the sleeve, and the lower reinforcement of the beam is connected to the lower column through the lapping plate, so as to ensure the reliable connection of the upper and lower profiled steel concrete beam-columns, the uniform change of the structural stiffness, and at the same time facilitate the construction of the vertical connection node of the profiled steel column and the anchorage of the vertical reinforcement of the upper column, reasonably transfer the load effect, and ensure the reliability and safety of the profiled steel concrete beam-column connection node and even the entire structure.

[0086] In the second aspect, this application also provides a profiled steel concrete beam-column, and the profiled steel concrete beam-column includes at least one profiled steel concrete beam-column connection structure of the first aspect.

[0087] The problems that can be solved and the effects that can be achieved by the profiled steel concrete beam-column provided by this application are the same as those of the profiled steel concrete beam-column connection structure in the first aspect, and will not be elaborated here.

[0088] The preferred embodiments of the present application have been described in detail above. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application.

[0089] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, without contradiction, they can be combined in any appropriate manner. To avoid unnecessary repetition, the present application will not separately describe various possible combination manners.

[0090] Furthermore, any combination can be made among various different embodiments of the present application, as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed by the present utility model.

Claims

1. A steel-concrete beam-column connection structure, characterized in that: The connection structure comprises: an upper column (1), a lower column (2), and a beam (3); The upper column (1) is inserted into the lower column (2), and the upper column flanges (11) on both sides of the upper column (1) are located inside the lower column flanges (21) on both sides of the lower column (2); The beam (3) is arranged in the area where the upper column (1) is inserted into the lower column (2), and the height of the beam (3) is not less than the height of the upper column (1) inserted into the lower column (2), so that the upper reinforcement of the beam (3) is connected to the lower column (2) through a reinforcement plate and a sleeve, and the lower reinforcement of the beam (3) is connected to the lower column (2) through a reinforcement plate.

2. The connection structure according to claim 1, characterized in that: The upper column (1) further comprises: upper column longitudinal reinforcement (12) and upper column stirrups (13); The upper column longitudinal steel bars (12) are embedded on both sides of the upper column (1) and inserted and fixed in the beam (3); Furthermore, the upper column stirrups (13) are arranged around the upper column longitudinal steel bars (12).

3. The connection structure according to claim 1, characterized in that: The lower column (2) further comprises: lower column longitudinal reinforcement (22) and lower column stirrups (23); The lower column longitudinal steel bars (22) are embedded on both sides of the lower column (2) and fixed in the beam (3); Furthermore, the lower column stirrups (23) are arranged around the lower column longitudinal steel bars (22).

4. The connection structure according to claim 1, characterized in that: The upper column (1) further comprises: an upper column web (14); The lower column (2) further comprises: a lower column web (24); The beam (3) further comprises: a beam web (31); The upper column web (14) is embedded in the upper column (1), the lower column web (24) is embedded in the lower column (2), and the beam web (31) is embedded in the beam (3); The center lines of the upper column web (14), the beam web and the lower column web are aligned, so that the lower column web extends upward to the top of the beam (3).

5. The connection structure according to claim 1, characterized in that: The upper reinforcement of the beam (3) comprises: a first longitudinal reinforcement (32) of the steel beam and a longitudinal reinforcement slab (33) at the top of the steel beam; The first tension longitudinal reinforcement (32) of the steel beam is transversely arranged on the top of the beam (3), and the longitudinal reinforcement slab (33) on the top of the steel beam is arranged below one side of the first tension longitudinal reinforcement (32); The first tensioned longitudinal reinforcement (32) of the steel beam is connected to the reinforcement plate of the lower column flange (21) through the longitudinal reinforcement reinforcement plate (33) at the top of the steel beam.

6. The connection structure according to claim 5, characterized in that: The upper reinforcement of the beam (3) further comprises: a second longitudinal reinforcement (34) of the steel beam and a connecting sleeve (35) of the steel beam; The second tensioned longitudinal reinforcement (34) of the steel beam is arranged below the first tensioned longitudinal reinforcement (32) of the steel beam, and the steel beam connecting sleeve (35) is arranged at one end of the second tensioned longitudinal reinforcement (34) of the steel beam; The second tensioned longitudinal reinforcement (34) of the steel beam is connected to the sleeve of the lower column flange (21) through the steel beam connecting sleeve (35).

7. The connection structure according to claim 3, characterized in that: The lower reinforcement of the beam (3) comprises: a tensile longitudinal reinforcement (36) at the bottom of the steel beam, a longitudinal reinforcement slab (37) at the bottom of the steel beam, and a longitudinal reinforcement slab (311) at the bottom of the steel column; The tensioned longitudinal reinforcement (36) at the bottom of the steel beam is transversely arranged at the bottom of the beam (3), and the longitudinal reinforcement slab (37) at the bottom of the steel beam is arranged below one side of the tensioned longitudinal reinforcement (36) at the bottom of the steel beam; The tensioned longitudinal reinforcement (36) at the bottom of the steel beam is connected to the reinforcement plate (37) of the longitudinal reinforcement (22) at the bottom of the lower column through the reinforcement plate (37) at the bottom of the steel beam; In addition, one end of the tensioned longitudinal reinforcement (36) at the bottom of the steel beam is also longitudinally connected to the steel column longitudinal reinforcement slab (311), and the steel column longitudinal reinforcement slab (311) is connected to the lower column longitudinal reinforcement (22) slab through the steel beam bottom longitudinal reinforcement slab (37).

8. The connection structure according to claim 5, characterized in that: The beam (3) further comprises: steel beam stirrups (38); The steel beam stirrups (38) are arranged around the first tension longitudinal reinforcement (32) of the steel beam.

9. The connection structure according to claim 1, characterized in that: The connection structure further comprises: vertical stiffening ribs (310) of the steel beam; The vertical stiffening rib (310) of the steel beam is embedded in one side of the beam (3) close to the lower column flange (21).

10. The connection structure according to claim 1, characterized in that: The connection structure further comprises: horizontal stiffening ribs (4); The horizontal stiffening rib (4) is transversely welded to the lower column flange and the upper column flange.

11. The connection structure according to claim 1, characterized in that: The connection structure further comprises: a bolt (5); The bolts (5) are arranged in the lower column flange, the upper column flange and the beam flange (39) of the beam (3).

12. A steel-concrete beam column, characterized in that: The steel-concrete beam-column comprises at least one steel-concrete beam-column structure according to any one of claims 1-11.

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