In-column hollowed-out tenon-and-mortise connection concrete filled steel tube combination node

Abstract

The utility model belongs to the technical field of buildings, and particularly relates to an in-column hollow type tenon-and-mortise connection steel pipe concrete combination joint. A hole system formed by combining a transverse mounting hole and a longitudinal mounting hole is formed in the pipe wall of the pipe column; the transverse mortise tube penetrates through the transverse mounting hole, the longitudinal tenon body sequentially penetrates through the longitudinal mounting hole and a mortise hole or a mortise groove in the transverse mortise tube, and the transverse mortise tube and the longitudinal tenon body form two right-angle rod groups at the same section height of the tubular column; an upper base plate is fixed on the upper surface of the longitudinal tenon body at the upper right-angle rod group in the right-angle rod groups, and a lower base plate is fixed on the lower surface of the end part of the lower right-angle rod group; the top faces of the inner walls of the tubular beams are fixed to the upper base plates or the longitudinal tenon bodies, and the bottom faces of the outer walls of the tubular beams are fixed to the lower base plates to form an upper-jacking and lower-supporting structure. On the basis of the design thought of strong joints and weak components, the compactness of the structure and the strengthening performance of the rigidity of the joint core area can be ensured, and the force bearing performance can also be effectively guaranteed.

Description

Technical Field

[0001] This application belongs to the field of building technology, specifically relating to a steel-concrete composite joint with hollowed-out tenon and mortise connection inside the column. Background Technology

[0002] Joints are key components affecting the load-bearing performance of steel-concrete composite structures; technological advancements in joints are currently under continuous research and development. Given current industry trends, beam-column joints in steel-concrete composite structures still predominantly employ welding methods, which generally fall into two categories: one involves directly welding separate beams to both sides of the steel column. While relatively convenient, this obviously disrupts the continuity of the beam structure. Furthermore, relying solely on welds to transfer forces between beams and columns can lead to issues such as high welding quality requirements, complex construction, high residual stress in and around the welds, and significant impact on seismic performance. The other method involves beams penetrating the steel column. This method ensures the load-bearing capacity of the beam, but the larger cross-section of the beam results in a loss of effective cross-section at the steel column web, negatively impacting load-bearing capacity. Later, related peripheral wrapping technologies emerged, such as the one described in "CN 112900646A" entitled "A Prefabricated Composite Structure Node Connection System": This system uses a half-joint sleeve outside the steel column, allowing the beam to bypass the steel column and achieve integrated continuous assembly. The disadvantages are that the structure is relatively more complex, with more components, resulting in a bulky construction, and the stiffness of the core area of ​​the node cannot be strengthened. Therefore, whether a new node structure can be developed that strikes a balance between structural compactness, load-bearing capacity, and stiffness enhancement of the core area of ​​the node has been a technical challenge urgently needing to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of this application is to overcome the shortcomings of the prior art and provide a steel-concrete composite joint with hollowed-out tenon and mortise connection inside the column. Based on the design concept of "strong joint and weak component", it can ensure the compactness of the structure and the strengthening of the stiffness of the core area of ​​the joint, and the load-bearing capacity can also be effectively guaranteed.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] The column-mounted hollow tenon-and-mortise joint steel-concrete composite node includes a column and a matching beam. The feature is that the column wall is provided with a hole system formed by a combination of transverse and longitudinal mounting holes; the transverse tenon passes through the transverse mounting hole, and the longitudinal tenon passes through the longitudinal mounting hole and the mortise or groove at the transverse tenon in sequence. At this time, the transverse tenon and the longitudinal tenon form a right-angle rod group with two or four ends protruding from the outer wall of the column at the same cross-sectional height.

[0006] The right-angle rod group consists of two groups, including an upper right-angle rod group and a lower right-angle rod group arranged sequentially along the axis of the pipe column. An upper pad is fixed to the upper surface of the longitudinal tenon at the upper right-angle rod group, and a lower pad is fixed to the lower surface of the end of the lower right-angle rod group. The pipe beam is fixed to the corresponding end of the same right-angle rod group at the same height through the inner end, and the top surface of the inner wall of each group of pipe beams is fixed to the upper pad or the longitudinal tenon, and the bottom surface of the outer wall of the pipe beam is fixed to the lower pad to form an upper top and lower support structure.

[0007] Preferably, the tube beams have a uniform thickness. In this case, the upper surface of the transverse mortise at the upper right-angle rod assembly and the upper surface of the upper pad at the longitudinal tenon are on the same horizontal plane, while the upper surfaces of all the lower pads of the lower right-angle rod assembly are on another horizontal plane.

[0008] Preferably, the pipe beams have a uniform thickness, and the upper surface of the transverse mortise at the upper right-angle rod group is also fixed with an upper pad. The upper surfaces of all the upper pads of the upper right-angle rod group are located on the same horizontal plane, and the upper surfaces of all the lower pads of the lower right-angle rod group are located on another horizontal plane.

[0009] Preferably, the tube beam is a horizontally arranged square tube, and the width of the upper pad plate matches the width of the inner wall of the tube beam; along the width direction of the tube beam, a notch is horizontally and continuously opened on the bottom surface of the tube beam, and the lower pad plate is welded to the notch, so that the lower pad plate supports the bottom of the two side walls of the tube beam from bottom to top.

[0010] Preferably, the mortise holes at the transverse mortise points of the upper right-angle rod assembly are arranged near the top wall of the pipe; the mortise holes at the transverse mortise points of the lower right-angle rod assembly are arranged near the bottom wall of the pipe.

[0011] Preferably, the longitudinal tenon is a horizontal square tube-shaped longitudinal tenon or a horizontal plate-shaped longitudinal tenon.

[0012] Preferably, it also includes reinforcing steel bars, which pass through the corresponding pipe body along the length direction of the transverse tenon and / or longitudinal tenon and are then welded to the inner corner of the corresponding pipe body.

[0013] Preferably, both the transverse mortise and the longitudinal tenon have through-holes for slurry injection, and the direction of the injection holes is parallel to the axial direction of the pipe column; the injection holes between the transverse mortise and the longitudinal tenon intersect in the axial direction of the pipe column.

[0014] Preferably, the casting hole is also horizontally opened on the side wall of the longitudinal tenon tube and / or vertically opened on the top wall of the tube beam.

[0015] Preferably, internal partitions that serve as dividers are arranged inside both the transverse mortise tubes and the longitudinal tenon tubes, thereby isolating the tube column cavity from the tube beam cavity.

[0016] The beneficial effects of this application are as follows:

[0017] 1) Through the above scheme, on the one hand, in actual construction, each module of this application can selectively use prefabricated profiles, which is easy to purchase and process, saving costs; on the other hand, the right-angle bar group passes through the core area of ​​the node in both the horizontal and vertical directions, making the steel content in this area larger than in other parts, thus achieving the design concept of "strong node, weak component". More importantly, this application relies on the combined design of the upper and lower right-angle bar groups to transform the traditional scheme that originally required a large cross-section to penetrate the pipe column into a design method that only requires two or more bars to penetrate the pipe column. This not only further reduces the damage to the pipe column and lowers the load-bearing failure, but also effectively ensures the load-bearing capacity. Furthermore, through the setting of the lower pad and the upper pad or the longitudinal tenon, a combined supporting effect is achieved on the top of the inner wall and the bottom of the outer wall of the pipe beam, further ensuring the integrity and reliable load-bearing effect of the overall weld, achieving multiple benefits.

[0018] Thus, based on the design concept of "strong nodes and weak components", this application can ensure the compactness of the structure and the strengthening of the stiffness of the core area of ​​the nodes, and the load-bearing capacity can also be effectively guaranteed.

[0019] 2) In actual design, considering the presence of mortises at the transverse mortises, the upper and lower surfaces of the transverse mortises and longitudinal tenons in the same right-angle rod assembly will be inconsistent. In this case, adaptive matching can be achieved by varying the thickness of the top and bottom walls of the tube beam, or by increasing the weld thickness during welding. Of course, as a further preferred solution of this application, assuming that the tube beam thickness is consistent, the thicknesses of the upper and lower pads can also be directly designed to match, thereby ensuring that the corresponding surfaces are on the same horizontal plane, thus further improving assembly and welding efficiency.

[0020] 3) Furthermore, the lower pad of this application plays the most important role, mainly serving as a support. Therefore, the optimal point of force application is actually at the bottom of the two side walls of the notch groove, i.e., the two side walls of the pipe beam, thus forming an upper support structure that is easy to apply force. Combined with the upper pad or the upward effect of the longitudinal tenon, it ultimately ensures the integrity of its load-bearing structure.

[0021] 4) Of course, considering minimizing the thickness difference of the aforementioned pads, it is advisable to arrange the mortises at the transverse mortises of the upper right-angle rod assembly near the top wall of the tube, and the mortises at the transverse mortises of the lower right-angle rod assembly near the bottom wall of the tube. The corresponding mortises and tenons of the upper and lower right-angle rod assemblies can also be staggered to balance the load-bearing effect.

[0022] 5) Furthermore, the longitudinal tenon can be a tube structure with the same shape as the transverse tenon but slightly smaller in size, or a flat plate structure can be used directly to ensure the insertion and fixing effect on the tube beam. The appropriate method can be used according to the actual site conditions.

[0023] 6) Since the overall size of the right-angle bar assembly in this application is relatively small, additional reinforcing bars can be added. During use, the reinforcing bars can be passed through the corresponding corners of the square steel pipe to ensure reinforcement. The reinforcing bars and the casting holes at the right-angle bar assembly can further enhance the reinforcement effect. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of an embodiment of the L-shaped fastener of this application;

[0025] Figure 2 for Figure 1 Exploded view of the structure shown;

[0026] Figure 3 This is a three-dimensional structural diagram of an embodiment of the cross-fixation device of this application;

[0027] Figure 4 for Figure 3 Exploded view of the fit between the double-row transverse mortises and the single-row longitudinal tenon plate in the current state;

[0028] Figure 5 for Figure 3 Exploded view of the fit between the double-row horizontal mortises and the double-row vertical tenons;

[0029] Figure 6 for Figure 5 The diagram shows the arrangement of reinforcing bars under the given conditions.

[0030] The actual correspondence between the reference numerals and component names in this application is as follows:

[0031] 10-Tube string; 11-Horizontal mounting hole; 12-Longitudinal mounting hole;

[0032] 20 - Horizontal mortise; 21 - Mortise hole; 22 - Mortise groove; 23 - Notch groove;

[0033] 30 - Longitudinal tenon; 40 - Reinforcing steel bar; 50 - Casting hole; 60 - Pipe beam;

[0034] 71 - Upper pad; 72 - Lower pad. Detailed Implementation

[0035] For ease of understanding, the specific structure and working method of this application are further described below with reference to the accompanying drawings:

[0036] like Figures 1-6As shown, the specific implementation structure of this application includes a steel-concrete composite column constituting the column 10, two steel-concrete composite beams constituting the beam 60 in two directions, two upper connecting steel pipes constituting the upper right-angle bar group, two lower connecting steel pipes or lower connecting steel plates constituting the lower right-angle bar group, and several upper pads 71 ​​and lower pads 72. All connections are welded. This connection structure is mainly applicable to the connection of steel-concrete composite beam-column joints.

[0037] In further design, the steel-concrete composite column is provided with transverse mounting holes 11 and longitudinal mounting holes 12. The upper and lower right-angle rod assemblies within the node both pass through the corresponding mounting holes at the column 10. Depending on whether the mounting holes completely penetrate the column 10, they can be further divided into... Figure 1 The L-shaped fixed mounting system shown, or as... Figure 3 The installation system shown is a cross-shaped fixing system; of course, the two types of installation systems only differ in the number of protruding ends of the corresponding rod groups and the number of matching tube beams 60, the rest of the structure is basically the same, and the specific installation can be determined according to the on-site installation conditions.

[0038] Furthermore, with Figures 1-2 Taking the structure shown as an example, the arrangement directions of the transverse tenons 20 and the tubular longitudinal tenons 30 of the upper and lower rod groups are different. Specifically, the longitudinal tenon 30 of the lower right-angle rod group is arranged directly below the transverse tenon 20 of the upper right-angle rod group, and the transverse tenon 20 of the lower right-angle rod group is arranged directly below the longitudinal tenon 30 of the upper right-angle rod group; of course, as Figures 4-6 The assembly method shown is also acceptable. In actual operation, it is advisable to add an inner partition plate to the corresponding mortise or tenon body so that the corresponding mortise or tenon body forms a semi-closed tube body that connects to the inner cavity of the column 10 through the casting hole 50, so as to ensure the isolation effect with the inner cavity of the corresponding tube beam 60.

[0039] Furthermore, to achieve the "upper support and lower back support" effect of this application, such as Figure 2 and Figures 4-6 As shown, in addition to the mortise hole 21 and the casting hole 50, the transverse mortise tube 20 also has an upper pad 71 and a lower pad 72 at the end protruding from the tube column 10. Considering that the tube beam 60 is a commercially available component with consistent wall thickness, it is possible to compensate by using corresponding pads. That is, the thicknesses of the upper pad 71 and the lower pad 72 can be directly matched to ensure that the corresponding surfaces are on the same horizontal plane, thereby further improving assembly and welding efficiency. In addition, the setting of the lower pad 72 can also play a complementary role. Figure 2 and Figures 4-6Following the notch 23 shown, the support is achieved by the bottom of the two side walls of the top support notch 23, i.e., the side walls of the pipe beam 60. Of course, in specific designs, the width of the lower pad 72 can be wider, even exceeding the width of the notch 23. For example, the width of the lower pad 72 can be 10-30mm wider than the flange width of the pipe beam 60. Welding holes can be arranged at the corresponding ends of the right-angle rod assembly to facilitate the welding of the upper pad 71 and the lower pad 72.

[0040] Furthermore, the style and dimensions of the transverse mortise 20 and the longitudinal tenon 30 can also be designed in various ways, such as... Figure 2 The diagram shows the matching design of a single horizontal tenon tube 20 and a single vertical tenon tube. Figure 4 The design is for matching the double-row horizontal tenon tubes 20 with the single-row vertical tenon plate; Figure 5 The design, featuring a double row of transverse tenons 20 and a double row of longitudinal tenons, satisfies both usage requirements. Furthermore, the longitudinal tenons 30 can be either pipes or plates, while the transverse tenons can be designed with... Figure 2 and Figure 4 The mortise hole 21 shown can also be opened as follows: Figure 5 and Figure 6 The mortise 22 shown only needs to satisfy the purpose of inserting the longitudinal tenon 30.

[0041] During construction, considering the strength requirements of the transverse tenon 20mm, or even the longitudinal tenon and the entire joint, it is also possible to... Figure 6 The 40mm reinforcing bar shown can be inserted into the corresponding square steel pipe by passing it through the pipe body along the corresponding corner. See details below. Figure 6 As shown, this ensures reinforcement. The reinforcing steel bar 40 and the casting hole 50 at the right-angle bar assembly work together to further enhance the reinforcement effect.

[0042] Of course, those skilled in the art will recognize that this application is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0044] The technologies, shapes, and structures not described in detail in this application are all known technologies.

Claims

1. A steel-concrete composite joint with hollowed-out tenon and mortise joints, comprising a pipe column (10) and a matching pipe beam (60), characterized in that: The pipe column (10) has a hole system formed by the combination of transverse mounting holes (11) and longitudinal mounting holes (12) on its pipe wall; the transverse mortise (20) passes through the transverse mounting hole (11), and the longitudinal tenon (30) passes through the longitudinal mounting hole (12) and the mortise hole (21) or mortise groove (22) at the transverse mortise (20) in sequence. At this time, the transverse mortise (20) and the longitudinal tenon (30) form a right-angle rod group with two or four ends protruding from the outer wall of the pipe column (10) at the same cross-sectional height of the pipe column (10); The right-angle rod group consists of two groups, including an upper right-angle rod group and a lower right-angle rod group arranged sequentially along the axis of the column (10). The upper surface of the longitudinal tenon (30) of the upper right-angle rod group is fixed with an upper pad (71), and the lower surface of the lower right-angle rod group is fixed with a lower pad (72). The pipe beam (60) is fixed to the corresponding end of the same right-angle rod group at the same height through the inner end. The top surface of the inner wall of each pipe beam (60) is fixed with the upper pad (71) or the longitudinal tenon (30), and the bottom surface of the outer wall of the pipe beam (60) is fixed with the lower pad (72) to form an upper top and lower support structure.

2. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 1, characterized in that: The thickness of the tube beam (60) is consistent. At this time, the upper surface of the transverse mortise tube (20) at the upper right-angle rod group and the upper surface of the upper pad (71) at the longitudinal tenon (30) are on the same horizontal plane. The upper surfaces of all the lower pads (72) of the lower right-angle rod group are on another horizontal plane.

3. The column-embedded hollow tenon-and-mortise joint steel-concrete composite node according to claim 1, characterized in that: The pipe beam (60) has a uniform thickness. The upper surface of the transverse mortise (20) of the upper right-angle rod group is also fixed with an upper pad (71). The upper surfaces of all the upper pads (71) of the upper right-angle rod group are located on the same horizontal plane, and the upper surfaces of all the lower pads (72) of the lower right-angle rod group are located on another horizontal plane.

4. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 1, 2, or 3, characterized in that: The tube beam (60) is a horizontally arranged square tube. The width of the upper pad (71) matches the width of the inner wall of the tube beam (60). Along the width direction of the tube beam (60), the bottom surface of the tube beam (60) is horizontally through-grooved with a notch (23). The lower pad (72) is welded to the notch (23), so that the lower pad (72) supports the bottom of both sides of the tube beam (60) from bottom to top.

5. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 2 or 3, characterized in that: The mortise (21) at the transverse mortise (20) of the upper right-angle rod group is arranged near the top wall of the tube; the mortise (21) at the transverse mortise (20) of the lower right-angle rod group is arranged near the bottom wall of the tube.

6. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 1, 2, or 3, characterized in that: The longitudinal tenon (30) is a horizontal square tube-shaped longitudinal tenon or a horizontal plate-shaped longitudinal tenon.

7. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 6, characterized in that: It also includes reinforcing steel bars (40), which pass through the corresponding pipe body along the pipe length direction of the transverse tenon (20) and / or the longitudinal tenon and are welded to the inner corner of the corresponding pipe body.

8. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 6, characterized in that: Both the transverse mortise (20) and the longitudinal tenon (30) are provided with pouring holes (50) for grout injection. The pouring holes (50) are opened in a direction parallel to the axial direction of the column (10). The pouring holes between the transverse mortise (20) and the longitudinal tenon (30) intersect in the axial direction of the column (10).

9. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 8, characterized in that: The casting hole (50) is also horizontally opened on the side wall of the longitudinal tenon and / or vertically opened on the top wall of the tube beam (60).

10. The column-mounted hollow tenon-and-mortise joint steel-concrete composite node according to claim 8, characterized in that: Both the transverse tenon (20) and the longitudinal tenon are equipped with internal partitions that act as dividers, thereby separating the cavity of the column (10) from the cavity of the beam (60).

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