An aluminum alloy beam-column gusset connection joint and its construction method

Abstract

The present invention discloses an aluminum alloy beam-column plate connection node and a construction method thereof, which relates to the field of anti-seismic technology of civil engineering structures, including an aluminum alloy beam-column with an I-shaped cross section with a rolled edge, which is bolted with a stainless steel plate instead of welding; a special-shaped stainless steel fixing plate and a through-type rectangular fixing plate are provided to respectively improve the bending stiffness in the X-Z and Y-Z planes; a through-core steel rod and a hoop are added in the weak axis direction to form three force transmission paths to optimize the force transmission efficiency; long slots are opened on the beam flange and the rolled edge to dissipate the seismic energy through the sliding friction of high-strength fasteners to protect the main structure from plastic damage. The node is divided into a first node and a second node, and a common fixing plate is used to realize multi-directional stiffness coordination, and the construction is simplified by a step-by-step assembly process. The present invention has both high stiffness and strong seismic resistance, and solves the problems of welding defects, easy failure of dynamic loads, and insufficient stiffness of aluminum alloy beam-column nodes by bolting stainless steel plates, optimizing the rolled edge section, transmitting force with a through-core steel rod, and designing friction energy dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake resistance of civil engineering structures, and particularly to an aluminum alloy beam-column gusset connection node and a construction method thereof. Background Art

[0002] In the connection technology of aluminum alloy beam-column joints, the gusset plate is a key force transmission and energy dissipation component, and its performance directly affects the stiffness, bearing capacity and seismic performance of the joint. However, there are significant deficiencies in the existing gusset plate technology: Firstly, the compatibility between traditional gusset plate materials and aluminum alloy is poor, which is prone to accelerating the aging of the connection part due to electrochemical corrosion, and the material strength and ductility do not match, making it difficult to deform synergistically, resulting in brittle peeling or fatigue fracture of the joint under dynamic loads. Secondly, the gusset plate structure is single, mostly using flat plates or simple L-shaped designs, with insufficient out-of-plane stiffness, unable to effectively suppress the local buckling of the flange of the I-shaped section, and the force transmission path depends on bolt shear, resulting in low overall flexural stiffness and excessive deformation of the connection joint.

[0003] Chinese Patent Publication No. CN105672474A discloses a beam-column joint of a cruciform aluminum alloy frame structure and an installation method thereof, including: a cruciform frame structure and a reinforcement component. The cruciform frame structure is connected into an integral body through the reinforcement component to jointly bear force, deform synergistically and jointly resist the action of loads. The cruciform frame structure includes a left aluminum alloy beam, a right aluminum alloy beam and an aluminum alloy column. The left aluminum alloy beam and the right aluminum alloy beam are respectively arranged on the left and right sides of the middle part of the aluminum alloy column, and the reinforcement component is arranged between the connections of the left aluminum alloy beam, the right aluminum alloy beam and the aluminum alloy column. Although the above technical solution solves the problem of poor welding performance in part, there are still significant defects. Since its reinforcement component mainly relies on bolt connection of the beam flange and web, the force transmission path is discontinuous due to the cavity structure of the I-shaped column in the weak axis direction, and a multi-path collaborative force transmission mechanism cannot be formed. The joint structure focuses on the stiffness improvement of a single plane (X-Z plane), lacks the flexural design of the Y-Z plane, and is difficult to resist multi-dimensional seismic actions. The intensive punching of the beam flange exacerbates the section weakening, and low-cycle fatigue and extrusion deformation are easily caused under dynamic loads, affecting the energy dissipation performance and structural safety.

[0004] Therefore, there is an urgent need to develop an aluminum alloy beam-column joint with a simple structure, efficient force transmission, coordinated improvement of bidirectional flexural stiffness and convenient for rapid assembly of strong and weak axes to solve the core defects of insufficient stiffness, poor energy dissipation performance and low assembly efficiency in the prior art, and promote the engineering application of aluminum alloy frame structures. Summary of the Invention

[0005] According to the technical problems proposed above, the present invention provides an aluminum alloy beam-column plate-connected joint and its construction method. By means of bolted stainless steel plates, optimized rolled-edge sections, force transmission through through-core steel bars, and friction energy dissipation design, the problems of welding defects, easy failure under dynamic loads, and insufficient stiffness of aluminum alloy beam-column joints are solved.

[0006] To achieve the above object, the technical means adopted by the present invention are as follows:

[0007] An aluminum alloy beam-column plate-connected joint, comprising:

[0008] A rolled-edge I-shaped cross-section aluminum alloy column, with three positioning holes opened at the center of its web;

[0009] Two groups of rolled-edge I-shaped cross-section aluminum alloy beams respectively connected to the aluminum alloy column, including a first joint and a second joint, which are respectively connected to the aluminum alloy column through a first aluminum alloy beam and a second aluminum alloy beam;

[0010] The first joint includes: an L-shaped stainless steel fixing plate, an L-shaped stainless steel shear plate, a special-shaped stainless steel fixing plate, a through-type rectangular stainless steel fixing plate, and a first high-strength stainless steel fastener. The special-shaped stainless steel fixing plate is of an L-shaped or angle-shaped structure, and is bolted to the rolled-edge part of the first aluminum alloy beam through the first high-strength stainless steel fastener and connected to the flange of the aluminum alloy column, enhancing the flexural stiffness of the joint in the X-Z plane;

[0011] The second joint includes: a through-core steel bar, a hoop, and a second high-strength stainless steel fastener. Both ends of the through-core steel bar are welded to the special-shaped stainless steel fixing plate through the hoop and pass through the positioning holes in the web of the aluminum alloy column, forming three force transmission paths;

[0012] The through-type rectangular stainless steel fixing plate is bolted to the rolled-edge parts of the aluminum alloy beams of the first joint and the second joint at the same time, enhancing the flexural stiffness in the X-Z plane and the Y-Z plane respectively.

[0013] Further, long slotted holes are opened at the flanges and rolled edges of the first aluminum alloy beam and the second aluminum alloy beam, and the first high-strength stainless steel fastener and the second high-strength stainless steel fastener can slide in the slotted holes.

[0014] Further, both ends of the through-core steel bar are provided with threads, and the length is equal to the distance from the web of the aluminum alloy column to the inner wall of the special-shaped stainless steel fixing plate, and the hoop is pre-tightened on the steel bar, and quick positioning and fixing are achieved through rotation.

[0015] Further, the through-type rectangular stainless steel fixing plate is arranged along the Y-Z plane and is bolted to the rolled edge of the second aluminum alloy beam of the second joint, and its in-plane stiffness cooperates with that of the special-shaped stainless steel fixing plate to enhance the flexural performance in the Y-Z plane.

[0016] Further, the L-shaped stainless steel shear plate is fixed at the web of the first aluminum alloy beam of the first joint, and jointly restricts the relative displacement between the beam and the column with the special-shaped stainless steel fixing plate, and bears the joint shear force.

[0017] Further, the first joint and the second joint share the special-shaped stainless steel fixing plate and the through-type rectangular stainless steel fixing plate, and respectively strengthen the flexural stiffness in the X-Z plane and the Y-Z plane through the differential design of the through steel bars and the hoop.

[0018] Further, the special-shaped stainless steel fixing plate and the through-type rectangular stainless steel fixing plate form a double-layer connection structure through high-strength stainless steel fasteners, and the double-layer connection structure respectively covers the inner and outer sides of the flange curls of the first aluminum alloy beam and the second aluminum alloy beam.

[0019] The present invention also provides a construction method for the aluminum alloy beam-column gusset connection joint. The installation of the aluminum alloy beam-column gusset connection joint described above includes the following steps:

[0020] S1. Align the reserved holes of the two lower special-shaped stainless steel fixing plates, the L-shaped stainless steel fixing plate and the through-type rectangular stainless steel fixing plate with the reserved holes of the aluminum alloy column, and fix them through the first high-strength stainless steel fasteners;

[0021] S2. Align the flange curls and the reserved holes of the web of the first aluminum alloy beam with the holes of the special-shaped stainless steel fixing plate, the L-shaped stainless steel fixing plate and the through-type rectangular stainless steel fixing plate, and bolt them with the first high-strength stainless steel fasteners;

[0022] S3. Install the L-shaped stainless steel shear plate;

[0023] S4. Install the two upper special-shaped stainless steel fixing plates and the L-shaped stainless steel fixing plate, and fix them through the first high-strength stainless steel fasteners;

[0024] S5. Weld one end of the through steel bar to the inner wall of the left special-shaped stainless steel fixing plate, and pre-tighten the hoop (3-4) at the other end; adjust the position of the hoop through the three positioning holes of the aluminum alloy column web, weld the right through steel bar and tighten the hoop;

[0025] S6. Align the flange curls of the second aluminum alloy beam with the holes of the through-type rectangular stainless steel fixing plate, and bolt and fix them through the second high-strength stainless steel fasteners.

[0026] Further, the step S3 includes the following steps:

[0027] S31. Fit the vertical flange of the L-shaped stainless steel shear plate to the web of the first aluminum alloy beam, and align the horizontal flange with the holes of the special-shaped stainless steel fixing plate;

[0028] S32. Fix the vertical flange and the horizontal flange in sequence through the first high-strength stainless steel fasteners to form a shear force transmission path.

[0029] Further, the S5 includes the following steps:

[0030] S51. Pre-tighten the ferrule to the threaded end of the through steel bar, leaving an adjustment margin.

[0031] S52. Insert the positioning tool through the positioning hole of the aluminum alloy column web, and adjust the ferrule to contact the inner wall of the special-shaped stainless steel fixing plate.

[0032] S53. Apply torque to tighten the ferrule to form a rigid force transmission path.

[0033] Due to the adoption of the above technical solutions, compared with the prior art, the present invention has the following advantages:

[0034] 1. A connection joint of an aluminum alloy beam-column gusset provided by the present invention, through the cooperative action of the special-shaped stainless steel fixing plate in the X-Z plane and the through-type rectangular stainless steel fixing plate in the Y-Z plane, combined with the three-path force transmission mechanism of the through steel bar, significantly improves the flexural stiffness and bearing capacity of the joint under bidirectional seismic action, and avoids the local instability problem caused by the poor force transmission path of the weak axis in the traditional I-shaped aluminum alloy joint.

[0035] 2. A connection joint of an aluminum alloy beam-column gusset provided by the present invention, the contact surfaces of the beam flanges and the long slot holes of the flanges of the first aluminum alloy beam and the second aluminum alloy beam are sandblasted to form a high-friction interface. The high-strength stainless steel fasteners can slide in the slot holes, and the seismic energy is dissipated through sliding friction, so that the main body of the aluminum alloy beam-column remains in an elastic state, avoiding plastic damage and low-cycle fatigue failure, and improving the durability and seismic reliability of the joint.

[0036] 3. A connection joint of an aluminum alloy beam-column gusset provided by the present invention, in the weak axis direction, through the threaded connection and welding design of the through steel bar and the ferrule, three force transmission paths of "column flange + through steel bar" are formed, solving the problem of low force transmission efficiency of the weak axis caused by the cavity of the I-shaped cross-section; at the same time, the modular design of the special-shaped stainless steel gusset and the L-shaped shear plate realizes the efficient assembly in the strong and weak axis directions, reducing the construction complexity.

[0037] Based on the above reasons, the present invention can be widely promoted in the field of seismic technology for civil engineering structures. Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 Structural schematic diagram of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0040] Figure 2 First node structural schematic diagram of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of a special-shaped stainless steel fixing plate shared by the first node and the second node of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0042] Figure 4 Schematic diagram of a through-type rectangular stainless steel fixing plate shared by the first node and the second node of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0043] Figure 5 Second node structural schematic diagram of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0044] Figure 6 Schematic diagram of the opening of the aluminum alloy column at the second node of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0045] Figure 7 Schematic diagram of the through steel bar and the steel bar hoop structure at the second node of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0046] Figure 8 Assembly drawing corresponding to S1 in the construction method of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0047] Figure 9 Assembly drawing corresponding to S2 in the construction method of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0048] Figure 10 Assembly drawing corresponding to S3 in the construction method of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0049] Figure 11 Assembly drawing corresponding to S4 in the construction method of a connecting node of an aluminum alloy beam-column with a gusset plate according to an embodiment of the present invention;

[0050] Figure 12It is the assembly drawing corresponding to S5 in the construction method of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention;

[0051] Figure 13 It is the assembly drawing corresponding to S6 in the construction method of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention;

[0052] Figure 14 It is the first node working principle diagram I of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention;

[0053] Figure 15 It is the first node working principle diagram II of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention;

[0054] Figure 16 It is the second node working principle diagram I of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention;

[0055] Figure 17 It is the second node working principle diagram II of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention;

[0056] Figure 18 It is the transmission schematic diagram of three force transmission paths of the core steel bar column of the second node of an aluminum alloy beam-column gusset connection node according to an embodiment of the present invention.

[0057] In the figure; 1. Aluminum alloy column; 2. First node; 3. Second node; 2-1. First aluminum alloy beam; 2-2. L-shaped stainless steel fixing plate; 2-3. L-shaped stainless steel shear plate; 2-4. Special-shaped stainless steel fixing plate; 2-5. Penetrating rectangular stainless steel fixing plate; 2-6. First high-strength stainless steel fastener; 3-1. Second aluminum alloy beam; 3-2. Second high-strength stainless steel fastener; 3-3. Core steel bar; 3-4. Hoop. Detailed implementation manners

[0058] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0059] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restrictive of the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0060] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention. The orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0063] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the attached drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatial relative descriptions used here.

[0064] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus cannot be construed as limiting the protection scope of the present invention.

[0065] Embodiment 1

[0066] As Figures 1 to 7 shown, a connection joint of an aluminum alloy beam-column with a gusset plate includes: a corrugated I-shaped cross-section aluminum alloy column 1, in the web center of which three positioning holes are opened;

[0067] Two groups of corrugated I-shaped cross-section aluminum alloy beams respectively connected to the aluminum alloy column 1, including a first joint 2 and a second joint 3, which are respectively connected to the aluminum alloy column 1 through a first aluminum alloy beam 2-1 and a second aluminum alloy beam 3-1;

[0068] The first joint 2 includes: an L-shaped stainless steel fixing plate 2-2, an L-shaped stainless steel shear plate 2-3, a special-shaped stainless steel fixing plate 2-4, a through-type rectangular stainless steel fixing plate 2-5 and a first high-strength stainless steel fastener 2-6. The special-shaped stainless steel fixing plate 2-4 is of an L-shaped or angle-shaped structure, and is bolted to the corrugated part of the first aluminum alloy beam 2-1 through the first high-strength stainless steel fastener 2-6 and is connected to the flange of the aluminum alloy column 1 to enhance the flexural stiffness of the joint in the X-Z plane;

[0069] The second joint 3 includes: a through steel bar 3-3, a hoop 3-4 and a second high-strength stainless steel fastener 3-2. Both ends of the through steel bar 3-3 are welded to the special-shaped stainless steel fixing plate 2-4 through the hoop 3-4 and pass through the positioning holes in the web of the aluminum alloy column 1 to form three force transmission paths;

[0070] The through-type rectangular stainless steel fixing plate 2-5 is bolted to the flanged parts of the aluminum alloy beams of the first node 2 and the second node 3 at the same time, improving the flexural stiffness in the X-Z plane and the Y-Z plane respectively;

[0071] Through the combined design of the lipped I-shaped aluminum alloy column 1 with the first node 2 and the second node 3, combined with the bolted connection of the L-shaped stainless steel fixing plate 2-2, the special-shaped stainless steel fixing plate 2-4 and the through-type rectangular stainless steel fixing plate 2-5, the flexural stiffness of the node in the X-Z and Y-Z planes is significantly improved; the introduction of the through steel bar 3-3 and the hoop 3-4 optimizes the force transmission path in the weak axis direction, solves the problems of poor force transmission and easy fatigue failure of traditional aluminum alloy nodes, and at the same time achieves the balance of rapid assembly and seismic performance.

[0072] Specifically, in the first node 2, the L-shaped stainless steel fixing plate 2-2, the L-shaped stainless steel shear plate 2-3, the special-shaped stainless steel fixing plate 2-4 and the through-type rectangular stainless steel fixing plate 2-5 are all fixed to the first aluminum alloy beam 2-1 and the aluminum alloy column 1 of the main structure by the first high-strength stainless steel fasteners 2-6. Since the application of stainless steel materials is relatively mature, the special-shaped stainless steel fixing plate 2-4 can be made by welding and cutting into Figure 3 the shape shown in, and the special-shaped stainless steel fixing plate 2-4 significantly improves the flexural stiffness of the node in the X-Z plane, and its specific structural form is as shown in Figure 3 shown;

[0073] In addition to sharing the special-shaped stainless steel fixing plate 2-4 and the through-type rectangular stainless steel fixing plate 2-5 with the first node 2, the second node 3 additionally adds six through steel bars 3-3 at the center positions of the cross-sections of the upper and lower special-shaped stainless steel fixing plates 2-4, and additionally opens three round holes at the center of the web of the lipped I-shaped cross-section aluminum alloy column 1 for the positioning of the hoop 3-4. The through steel bar 3-3 and the hoop 3-4 are set in a threaded form, and the length is equal to the distance from the web of the lipped I-shaped cross-section aluminum alloy column 1 to the inner wall of the special-shaped stainless steel fixing plate 2-4. In this way, one end of the threaded through steel bar 3-3 can be tightened directly through the steel bar hoop 3-4, and the other end is directly welded to the inner wall of the special-shaped stainless steel fixing plate 2-4. In addition to using the special-shaped stainless steel fixing plate 2-4 at the upper and lower flanges of the second aluminum alloy beam 3-1, the through-type rectangular stainless steel fixing plate 2-5 is also installed on both sides of the flanged position of its flange. The through-type rectangular stainless steel fixing plate 2-5 is connected to the flanged parts of the upper and lower flanges of the second aluminum alloy beam 3-1 by the second high-strength stainless steel fasteners 3-2. The through-type rectangular stainless steel fixing plate 2-5 can also make full use of its in-plane stiffness in the Y-Z plane, significantly improving the flexural stiffness of the node in the Y-Z plane. The structure of the through steel bar 3-3 and the hoop 3-4 is as shown in Figure 7 shown, and the specific structure of the second node 3 and the opening situation of the web of the aluminum alloy column 1 are as shown in Figure 3As shown, the first node 2 and the second node 3 share the special-shaped stainless steel fixing plate 2-4 and the through-type rectangular stainless steel fixing plate 2-5. Through differential design (such as the through-rod 3-3 strengthening the X-Z plane and the through-type rectangular stainless steel fixing plate 2-5 strengthening the Y-Z plane), the coordinated improvement of the bending stiffness in multiple directions is achieved, reducing material redundancy and construction complexity.

[0074] Embodiment 2

[0075] Such as Figures 8 to 13 As shown, a construction method for a connecting node of an aluminum alloy beam-column plate includes the following steps:

[0076] S1. Align the reserved holes of the two special-shaped stainless steel fixing plates 2-4, L-shaped stainless steel fixing plates 2-2 and the through-type rectangular stainless steel fixing plate 2-5 on the lower side with the reserved holes of the aluminum alloy column 1, and fix them with the first high-strength stainless steel fasteners 2-6;

[0077] S2. Align the flange edge curling and the web reserved holes of the first aluminum alloy beam 2-1 with the holes of the special-shaped stainless steel fixing plate 2-4, L-shaped stainless steel fixing plate 2-2 and the through-type rectangular stainless steel fixing plate 2-5, and bolt them with the first high-strength stainless steel fasteners 2-6;

[0078] S3. Install the L-shaped stainless steel shear plate;

[0079] S4. Install the two special-shaped stainless steel fixing plates 2-4 and L-shaped stainless steel fixing plates 2-2 on the upper side, and fix them with the first high-strength stainless steel fasteners 2-6;

[0080] S5. Weld one end of the through-rod 3-3 to the inner wall of the left special-shaped stainless steel fixing plate 2-4, and pre-tighten the collar 3-4 at the other end; adjust the position of the collar 3-4 through the three positioning holes on the web of the aluminum alloy column 1, weld the right through-rod 3-3 and tighten the collar 3-4;

[0081] S6. Align the flange edge curling of the second aluminum alloy beam 3-1 with the holes of the through-type rectangular stainless steel fixing plate 2-5, and bolt and fix it with the second high-strength stainless steel fasteners 3-2.

[0082] Furthermore, the step S3 includes the following steps:

[0083] S31. Fit the vertical flange of the L-shaped stainless steel shear plate 2-3 to the web of the first aluminum alloy beam 2-1, and align the horizontal flange with the holes of the special-shaped stainless steel fixing plate 2-4;

[0084] S32. Fix the vertical flange and the horizontal flange in sequence with the first high-strength stainless steel fasteners 2-6 to form a shear force transmission path.

[0085] Furthermore, the step S5 includes the following steps:

[0086] S51. Pre-twist the ferrule 3-4 onto the threaded end of the through steel bar 3-3, leaving an adjustment allowance.

[0087] S52. Insert the positioning tool through the positioning holes in the web of the aluminum alloy column 1, and adjust the ferrule 3-4 until it contacts the inner wall of the special-shaped stainless steel fixing plate 2-4.

[0088] S53. Apply torque to tighten the ferrule 3-4 to form a rigid force transmission path.

[0089] As Figures 14 to 15 shown, the working principle of Embodiment 1 is as follows:

[0090] When the beam-column joint of the lipped I-section aluminum alloy beam is subjected to seismic action, if the beam end of the first joint 2 undergoes a downward displacement , a clockwise bending moment m1 will be generated at the beam-column joint. At this time, the main stress plane of the special-shaped stainless steel fixing plate 2-4 is parallel to its direction, providing a large flexural stiffness for this joint. The shear force V1 generated is mainly borne by the L-shaped stainless steel shear plate 2-3 fixed at the web of the first aluminum alloy beam 2-1. The upper and lower flange L-shaped stainless steel fixing plates 2-2 convert the bending moment into axial tension and compression through the lever arm effect: the upper L-shaped stainless steel fixing plate 2-2 and the tension side are in tension and drive the bolts to be in tension, and the lower L-shaped stainless steel fixing plate 2-2, that is, the pressure side, bears the pressure and transmits the pressure to the column body. If the beam end of the first joint 2 undergoes an upward displacement , a counterclockwise bending moment -m1 will be generated at the beam-column joint. At this time, the main stress plane of the special-shaped stainless steel fixing plate 2-4 is parallel to its direction, providing a large flexural stiffness for this joint. The shear force -V1 generated is mainly borne by the L-shaped stainless steel shear plate 2-3 fixed at the web of the first aluminum alloy beam 2-1. At this time, the upper and lower flange L-shaped stainless steel fixing plates 2-2 convert the bending moment into axial tension and compression pair: the lower L-shaped stainless steel fixing plate 2-2 and the tension side are in tension and drive the bolts to be in tension, and the upper L-shaped stainless steel fixing plate 2-2, that is, the pressure side, bears the pressure and transmits the pressure to the column body. On the pressure side, the long slot hole on the flange of the first aluminum alloy beam 2-1 slides to the left , and the first high-strength stainless steel fastener 2-6 slides relatively to the right in the slot hole . On the tension side, the long slot hole on the flange of the first aluminum alloy beam 2-1 slides to the right , and the first high-strength stainless steel fastener 2-6 slides relatively to the left in the slot hole .

[0091] As Figures 16 to 17 shown, the working principle of Embodiment 2 is as follows:

[0092] When the beam-column joint of the crimped I-shaped cross-section aluminum alloy is subjected to earthquake action, if the beam end of the second joint 3 is displaced downward , a clockwise bending moment m2 will be generated at the beam-column joint. At this time, the main stress plane of the through-type rectangular stainless steel fixing plate 2-5 is parallel to the bending moment direction, providing a large flexural rigidity for the joint. The upper and lower flanges form an angle-steel-like fixing plate through the special-shaped stainless steel fixing plate 2-4, and the bending moment is converted into an axial tension and compression pair through the lever arm effect: the upper side, i.e., the tension side, is in tension and drives the bolt to be in tension, and the lower side, i.e., the pressure side, bears the pressure and transmits the pressure to the column body. If the beam end of the first joint 2 is displaced upward , a counterclockwise bending moment -m2 will be generated at the beam-column joint. At this time, the main stress plane of the through-type rectangular stainless steel fixing plate 2-5 is parallel to its direction, providing a large flexural rigidity for the joint. The upper and lower flanges form an angle-steel-like fixing plate through the special-shaped stainless steel fixing plate 2-4, and the bending moment is converted into an axial tension and compression pair through the lever arm effect: the lower side, i.e., the tension side, is in tension and drives the bolt to be in tension, and the upper side, i.e., the pressure side, bears the pressure and transmits the pressure to the column body. On the pressure side, the long slot hole in the flange of the second aluminum alloy beam 3-1 slides to the left , and the second high-strength stainless steel fastener 3-2 slides relatively to the right in the slot hole . On the tension side, the long slot hole in the flange of the second aluminum alloy beam 3-1 slides to the right , and the second high-strength stainless steel fastener 3-2 slides relatively to the left in the slot hole .

[0093] Since the second joint 3 is arranged on one side of the crimped I-shaped cross-section and is in a cavity state, a through steel bar 3-3 and a hoop 3-4 are provided to provide a force transmission path and strengthen the weak side of the I-shaped cross-section. At this time, the force is transmitted through two flanges of the aluminum alloy column 1 and three force transmission paths of the through steel bar 3-3, as Figure 18 shown.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connecting joint of an aluminum alloy beam-column with a bonding plate, characterized in that Comprising: A first joint (2) composed of an L-shaped stainless steel fixing plate (2-2), an L-shaped stainless steel shear plate (2-3), a special-shaped stainless steel fixing plate (2-4), a through-type rectangular stainless steel fixing plate (2-5), and a first high-strength stainless steel fastener (2-6), wherein the special-shaped stainless steel fixing plate (2-4) is of an angle steel structure, is bolted to the flanging part of the first aluminum alloy beam (2-1) through the first high-strength stainless steel fastener (2-6), and is connected to the flange of the aluminum alloy column (1) to enhance the flexural stiffness of the joint in the X-Z plane; the aluminum alloy column (1) is an aluminum alloy column (1) with a flanged I-shaped cross-section; A second joint (3) composed of a second aluminum alloy beam (3-1), a through steel bar (3-3), a hoop (3-4), and a second high-strength stainless steel fastener (3-2), wherein both ends of the through steel bar (3-3) are welded to the special-shaped stainless steel fixing plate (2-4) through the hoop (3-4), and pass through the positioning holes in the web of the aluminum alloy column (1) to form three force transmission paths; The through-type rectangular stainless steel fixing plate (2-5) is bolted to the flanging parts of the aluminum alloy beams of the first joint (2) and the second joint (3) respectively to enhance the flexural stiffness in the X-Z plane and the Y-Z plane.

2. The aluminum alloy beam-column gusset connection joint according to claim 1, characterized in that, Long slotted holes are provided in the flanges and flanging parts of the first aluminum alloy beam (2-1) and the second aluminum alloy beam (3-1), and the first high-strength stainless steel fastener (2-6) and the second high-strength stainless steel fastener (3-2) can slide in the slotted holes.

3. The aluminum alloy beam-column gusset connection joint according to claim 1, wherein, Both ends of the through steel bar (3-3) are provided with threads, and the length is equal to the distance from the web of the aluminum alloy column (1) to the inner wall of the special-shaped stainless steel fixing plate (2-4), and the hoop (3-4) is pre-tightened on the through steel bar (3-3) to achieve rapid positioning and fixation by rotation.

4. A connection node of an aluminum alloy beam-column with a backing plate according to claim 1, characterized in that, The through-type rectangular stainless steel fixing plate (2-5) is arranged along the Y-Z plane and is bolted to the flanging of the second aluminum alloy beam (3-1) of the second joint (3), and its in-plane stiffness cooperates with that of the special-shaped stainless steel fixing plate (2-4) to enhance the flexural performance in the Y-Z plane.

5. The aluminum alloy beam-column gusset connection joint according to claim 1, wherein, The L-shaped stainless steel shear plate (2-3) is fixed at the web of the first aluminum alloy beam (2-1) of the first joint (2), and jointly with the special-shaped stainless steel fixing plate (2-4) restricts the relative displacement between the beam and the column and bears the joint shear force.

6. The aluminum alloy beam-column gusset connection joint according to claim 1, characterized in that, The first joint (2) and the second joint (3) share the special-shaped stainless steel fixing plate (2-4) and the through-type rectangular stainless steel fixing plate (2-5), and through the differential design of the through steel bar (3-3) and the hoop (3-4), the flexural stiffness in the X-Z plane and the Y-Z plane is respectively strengthened.

7. A connection joint of an aluminum alloy beam-column and a gusset plate according to claim 1, characterized in that The special-shaped stainless steel fixing plate (2-4) and the through-type rectangular stainless steel fixing plate (2-5) form a double-layer connection structure through high-strength stainless steel fasteners, and the double-layer connection structure respectively covers the inner and outer sides of the flanges and flanging parts of the first aluminum alloy beam (2-1) and the second aluminum alloy beam (3-1).

8. A construction method for a connecting joint of an aluminum alloy beam-column and a gusset plate, which is applied to a connecting joint of an aluminum alloy beam-column and a gusset plate described in any one of claims 1 to 7, and is characterized in that, Including the following steps: S1. Align the reserved holes of the two lower special-shaped stainless steel fixing plates (2-4), L-shaped stainless steel fixing plate (2-2), and through-type rectangular stainless steel fixing plate (2-5) with the reserved holes of the aluminum alloy column (1), and fix them with the first high-strength stainless steel fasteners (2-6); S2. Align the flange crimps and the reserved holes in the web of the first aluminum alloy beam (2-1) with the holes of the special-shaped stainless steel fixing plate (2-4), L-shaped stainless steel fixing plate (2-2), and through-type rectangular stainless steel fixing plate (2-5), and bolt them with the first high-strength stainless steel fasteners (2-6); S3. Install the L-shaped stainless steel shear plate (2-3); S4. Install the two upper special-shaped stainless steel fixing plates (2-4) and L-shaped stainless steel fixing plate (2-2), and fix them with the first high-strength stainless steel fasteners (2-6); S5. Weld one end of the through steel bar (3-3) to the inner wall of the left special-shaped stainless steel fixing plate (2-4), and pre-tighten the sleeve (3-4) at the other end; Adjust the position of the sleeve (3-4) through the three positioning holes in the web of the aluminum alloy column (1), weld the right through steel bar (3-3), and tighten the sleeve (3-4); S6. Align the flange crimps of the second aluminum alloy beam (3-1) with the holes of the through-type rectangular stainless steel fixing plate (2-5), and bolt and fix them with the second high-strength stainless steel fasteners (3-2).

9. The construction method of an aluminum alloy beam-column gusset connection joint according to claim 8, characterized in that, The S3 includes the following steps: S31. Fit the vertical flange of the L-shaped stainless steel shear plate (2-3) to the web of the first aluminum alloy beam (2-1), and align the horizontal flange with the holes of the special-shaped stainless steel fixing plate (2-4); S32. Fix the vertical flange and the horizontal flange in sequence with the first high-strength stainless steel fasteners (2-6) to form a shear force transmission path.

10. A construction method for a connection node of an aluminum alloy beam-column and a gusset plate according to claim 8, characterized in that, The S5 includes the following steps: S51. Pre-tighten the sleeve (3-4) to the threaded end of the through steel bar (3-3), leaving an adjustment margin; S52. Insert a positioning tool through the positioning holes in the web of the aluminum alloy column (1), and adjust the sleeve (3-4) to contact the inner wall of the special-shaped stainless steel fixing plate (2-4); S53. Apply torque to tighten the sleeve (3-4) to form a rigid force transmission path.

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